JP4885895B2 - Swivel type connector - Google Patents

Description

  The present invention relates to a swivel-bending connector that connects to an optical outlet adapter installed on a wall surface of a room in order to connect various optical communication devices.

  In recent years, FTTH (fiber to the home) has progressed, and an optical outlet has been installed in a room. Therefore, conventionally, as disclosed in Patent Document 1, a plurality of optical outlets are attached to an outlet box provided on a wall surface in the room, and an external light such as an optical fiber cord is connected to a connection adapter held in the optical outlet. There has been proposed a technique of an outlet part for connecting and inserting a connector plug perpendicular to a wall surface.

  However, since the conventional external optical connector plug is inserted and connected perpendicularly to the wall surface, the external optical connector plug itself protrudes vertically from the wall surface. For this reason, the external optical connector plug becomes an obstacle, and an accident such as a peripheral device hitting it and being damaged is expected.

Therefore, it is necessary to take some measures such as using a so-called bendable connector in which the boot is bent and deformed at a right angle and this tip is attached and fixed to the end of the stop ring of the optical connector plug. It is coming. At this time, a guide protrusion that can be inserted into the key hole of the connection adapter is formed on the knob piece side of the optical connector plug.
JP 2005-106937 A

  However, in the prior art, once the boot is attached to the end of the stop ring of the bending connector plug, it is necessary to change to a different part, which requires time and labor for the work.

  Also, the conventional bendable connector has a guide projection that can be inserted into the key hole of the connection adapter on one side of the knob, so it is impossible to change the direction of the bendable connector plug while the boot is attached to the stop ring. It becomes. Moreover, if the bendable connector plug itself is turned in the forward / reverse rotation direction while the optical fiber is bent at a right angle, the fiber core wire is twisted or excessively stressed.

  In addition, if the boot is bent and deformed at a right angle, the inner optical fiber itself is bent at a right angle at a single point and extremely bent, and the bending radius of the optical fiber cannot be taken sufficiently. Therefore, there is a problem that transmission loss increases.

  Therefore, the present invention has been devised in view of the existing circumstances as described above, has no effect on other parts, can adjust the orientation of the boot in one touch in a short time, and the optical fiber Twisting in a state of being bent at a right angle to prevent the twisting of the fiber core wire and the occurrence of excessive stress by changing the direction of the boot can be prevented, and the bending radius of the optical fiber can be sufficiently taken. It is an object of the present invention to provide a swivel-flexible connector that can suppress an increase in transmission loss by making it bendable.

In order to solve the above-described problems, in the present invention, an optical fiber of an optical cable is inserted and fixed, and a ferrule in which a flange is press-fitted and held at the rear end, and a ferrule abutting on the rear end of the flange and moving forward. A stop ring that supports the rear end of the urging spring, a plug frame that covers these members, a caulking ring that fixes the Kevlar of the optical cable to the stop ring, and a boot attached to the stop ring via a movable means A swivel-bending connector, wherein the movable means is configured to allow the boot to be swiveled in the forward and reverse rotation directions around the horizontal axis, and to bend the boot in a bent direction in one direction with respect to the horizontal axis. is so that, pivotally interlocking the rotary shaft cover that is fitted and fixed to the stop ring, around a horizontal axis in the forward and reverse rotation direction with respect to the rotary shaft cover A turning cover is characterized by comprising a bending cover formed of a fixed to a rear end of and boot is bent freely interlocking to 90 degrees in one direction with respect to the horizontal axis in revolving the cover.

  The movable means has a plurality of recesses along the inner periphery of the swivel cover to which the rotary shaft cover is fitted, and each of the recesses has a plurality of convex portions protruding toward the front of the opening end of the rotary shaft cover. Each of the swivel covers is formed to engage with each other so that the swivel cover can be fixed at an arbitrary swivel angle position.

  The movable means includes an arcuate guide groove formed on the inner surface of the swivel cover, and a convex portion protruding from the bent cover so as to engage with the guide groove, and the bent cover is at a horizontal position and an angular position of 90 degrees. Concave portions are provided at both ends of the guide groove so that the convex portions of the bent cover can be fitted.

  The movable means has an inner cover interposed between the rotating shaft cover and the bent cover, and the inner cover is pushed by the bent cover and is locked to the rotating shaft cover at a 90-degree bent position so as to rotate with respect to the rotating shaft cover. The rotation shaft cover is provided with an uneven rotation control unit so as to prevent the cover from rotating.

  The rotation control unit is configured such that the inner cover is pushed by the bent cover by the return movement from the 90-degree bent position to the horizontal position of the bent cover, and the engagement with the rotary shaft cover is released, thereby releasing the swivel cover from the rotary shaft cover. It is formed to allow rotation.

  The stop ring and the rotating shaft cover are a pair of left and right fitting protrusions that protrude along the inner periphery of the opening end of the rotating shaft cover in the fitting recess recessed along the circumference of the outer periphery of the stop ring. And a pair of upper and lower locking pieces protruding from the opening end of the rotary shaft cover are locked by being locked in a pair of upper and lower key grooves of the plug frame covering the outer periphery of the stop ring.

  According to the present invention, there is no influence on another part, and the orientation of the boot can be adjusted in a short time with one touch, and the orientation of the boot is changed by turning while keeping the optical fiber bent at a right angle. It is possible to prevent the occurrence of twisting of the fiber core wire and excessive stress, and further, the increase in transmission loss can be suppressed by making the optical fiber bendable so that the bending radius of the optical fiber can be sufficiently taken.

  That is, in the present invention, the movable means is formed so that the boot can be turned in the forward and reverse rotation directions around the horizontal axis, and the boot can be bent in one direction with respect to the horizontal axis. Therefore, it is not necessary to remove the boot from the stop ring of the swivel-bending connector every time the boot orientation is changed. Therefore, the boot orientation can be easily adjusted in a short time with a single touch. At the same time, since the bending radius of the optical fiber can be taken sufficiently, an increase in transmission loss can be suppressed.

  The movable means includes a rotating shaft cover fitted and fixed to the stop ring, a rotating cover connected to the rotating shaft cover so as to be rotatable in the forward and reverse rotation directions around the horizontal axis, and the rotating cover within the rotating cover. Since it is provided with a bent cover which is connected to bend up to 90 degrees in one direction with respect to the horizontal axis and which fixes the boot, the orientation of the boot can be adjusted reliably and smoothly with a simple configuration. Moreover, it is easy to ensure the orientation of the bent boot with a simple configuration. In addition, a bending space is formed inside the swivel cover and the bending cover so as to allow rotation around the horizontal axis and bending from the horizontal direction in a state where the inserted optical cable is concealed. The optical cable is not damaged during adjustment.

  The movable means has a plurality of recesses along the inner periphery of the swivel cover to which the rotation shaft cover is fitted, and a plurality of protrusions projecting toward the front of the opening end of the rotation shaft cover in each of these recesses. Since the parts are engaged with each other and formed so that the swivel cover can be fixed at an arbitrary swivel angle position, inadvertent rotation of the swivel cover with respect to the rotary shaft cover can be prevented.

  The movable means further includes an arcuate guide groove formed on the inner surface of the swivel cover, and a convex portion protruding from the bent cover so as to engage with the guide groove, and the bent cover is disposed at a horizontal position and an angle of 90 degrees. Since the concave portion that allows the convex portion of the bent cover to be fitted is provided at both ends of the guide groove so as to be fixable in position, excessive rotation of the bent cover with respect to the swivel cover can be prevented beforehand. This will not damage the optical cable.

  Furthermore, the movable means has an inner cover interposed between the rotating shaft cover and the bent cover, and the inner cover is pushed by the bent cover and is locked to the rotating shaft cover at a 90-degree bent position. Since the rotation shaft cover is provided with a concave-convex rotation control unit to prevent rotation of the swivel cover with respect to the cover, the fiber can be moved by entering a swivel operation while the optical fiber is bent at a right angle as in the prior art. It is possible to prevent twisting and excessive stress from occurring in the core wire.

  The rotation control unit is configured such that the inner cover is pushed by the bent cover by the return movement from the 90-degree bent position to the horizontal position of the bent cover, and the engagement with the rotary shaft cover is released, thereby releasing the swivel cover from the rotary shaft cover. Since it is formed to allow rotation, it is possible to prevent the optical fiber from turning while being bent at a right angle.

  The stop ring and the rotating shaft cover are a pair of left and right fitting protrusions that protrude along the inner periphery of the opening end of the rotating shaft cover in the fitting recess recessed along the circumference of the outer periphery of the stop ring. And a pair of upper and lower locking pieces projecting from the opening end of the rotary shaft cover are fixed to the upper and lower key grooves of the plug frame covering the outer periphery of the stop ring. When the rotary shaft cover is fitted to the rotary shaft cover, the rotary shaft cover itself can be provided with a non-rotating function by the locking piece fitted in the key groove of the plug frame.

The best mode for carrying out the swivel and bending connector according to the present invention will be described below in detail with reference to the drawings.
As shown in FIGS. 10 (a) and 10 (b), the swivel / bending connector 1 according to the present invention is housed in an outlet box M installed on a wall surface in the room to connect various optical communication devices. It connects to the optical outlet adapter Q.

  As shown in FIG. 1, the swivel / bending connector 1 has an optical fiber core wire a inserted and fixed, and a ferrule 2 in which a flange 21 is press-fitted and held at the rear end, and a ferrule 2 in contact with the rear end of the flange 21. The stop ring 5 that supports the rear end of the spring 4 that biases the front, the plug frame 3 that covers these members, and the Kevlar P1 that is a tensile strength line of the optical cable P are fixed to the stop ring 5 at the same time. 5 A caulking ring 6 for fixing a sheath P2, which is a synthetic resin sheath covering the outside of the Kevlar P1 of the optical cable P, to the eyelet 7 disposed on the rear end side, and behind the stop ring 5 via a movable means 10 to be described later The boot is generally composed of a boot 8 to be attached and a knob 9 that covers the plug frame 3 and the stop ring 5.

  The ferrule 2 fixes the optical fiber core wire a by bonding the tip of the optical fiber core wire a with an adhesive or the like after insertion. The ferrule 2 is protected by being covered with the plug frame 3.

  The spring 4 is formed of a coil spring and is disposed so as to be sandwiched between the flange 21 and the stop ring 5, so that the front end thereof is in contact with the rear end of the flange 21 and the rear end is supported by the stop ring 5. . By supporting the rear end of the stop ring 5 in this manner, the spring 4 works together with the flange 21 to urge the ferrule 2 forward.

  As shown in FIGS. 3 and 4, the front portion of the stop ring 5 is inserted into the plug frame 3 together with the ferrule 2, the flange 21 and the spring 4. In this case, a convex portion 5 a is formed above the outer surface of the front portion of the stop ring 5, and this convex portion 5 a serves as a guide when the stop ring 5 is inserted into the plug frame 3. On the other hand, the hook portion 3a projecting in a substantially C-ring shape below the stop ring 5 is engaged with the arc-shaped engagement hole 3b of the plug frame 3 to play a role of retaining.

  A boot 8 is attached to the rear of the stop ring 5 via a movable means 10 that can be turned and bent with respect to the stop ring 5. That is, the movable means 10 enables the boot 8 to turn in the forward and reverse rotation directions around the horizontal axis, for example, every 45 degrees, and the bending direction of the boot 8 after turning is one direction with respect to the horizontal axis. Can be bent by 90 degrees.

  Specifically, as shown in FIG. 2A, the movable means 10 includes a rotary shaft cover 10a fixed to the stop ring 5, and a swivel cover 10c rotatably connected to the rotary shaft cover 10a. The bent cover 10b is rotatably connected in the swivel cover 10c and the boot 8 is fixed, and the inner cover 10d is interposed between the swivel cover 10c and the bent cover 10b.

  That is, as shown in FIG. 2A, the swivel cover 10c has a bifurcated structure that is substantially bilaterally symmetric. The lower end of the swivel cover 10c has a circular arc at the shaft portion 11 formed inside the one swivel cover 10c. A bent cover 10b with the boot 8 fixed to the rear end is pivotally mounted via a generally L-shaped inner cover 10d that is a surface, and is formed at one end of each of the left and right swivel covers 10c. As shown in FIG. 2B, the left and right swivel covers 10c are fitted and fixed to each other by a fitting method using a patch-nail so that the flange of the rotary shaft cover 10a is sandwiched between the semicircular openings. Such a movable means 10 is formed.

  The rotary shaft cover 10a is formed by a cylinder through which the optical cable P is inserted, as shown in FIGS. 2 (a), 7 (a), 8 (a) to 8 (h), and 9 (a) to 9 (e). In addition, four arc-shaped projections 32 are integrally extended forwardly through four recesses 31 on the front surface of the flange formed in an annular shape on one end opening side of the rotary shaft cover 10a. The rotation control part 16 of the bending cover 10b is formed by being provided. Further, at the center of each of the hinge protrusions 32, a protrusion 33 is provided so as to protrude forward.

  Then, as shown in FIG. 2A, FIGS. 6A to 6F, FIG. 7B, and FIG. 8A, an arcuate guide groove 34 is formed at the inner corner of the swivel cover 10c. The guide groove 34 is formed with a convex portion 35 projecting from the side surface of the bent cover 10b. Further, locking recesses 36 are formed at both ends of the guide groove 34 so that the convex portions 35 of the bent cover 10b can be fitted, and the bent cover 10b can be fixed at a horizontal position and an angular position of 90 degrees. It is supposed to be.

  Also, as shown in FIGS. 8A to 8H, a plurality of recesses are formed along the inner periphery of the opening of the swivel cover 10c so as to oppose the central protrusions 33 of the hinge protrusions 32 of the rotary shaft cover 10a. 37 is formed, and a so-called latch fitting structure in which each of the concave portions 37 is engaged with the plurality of convex portions 33 of the rotary shaft cover 10a can fix the turning cover 10c at an arbitrary turning angle position. To be.

  That is, as shown in FIGS. 8A and 8B, from the state in which the turning cover 10c is in a fixed position with respect to the rotary shaft cover 10a, as shown in FIGS. When the turning cover 10c is turned 90 degrees with respect to the cover 10a, or when the turning cover 10c is turned 180 degrees with respect to the rotary shaft cover 10a from a fixed position as shown in FIGS. 8 (e) and (f), Further, as shown in FIGS. 8 (g) and 8 (h), in each case where the turning cover 10c is turned 270 degrees from the fixed position with respect to the rotating shaft cover 10a, the rotating shaft 10 The convex portions 33 of the cover 10a are engaged with each other.

  On the other end opening side of the rotary shaft cover 10a, as shown in FIGS. 2 (a), 2 (b), 3 and 4, a pair of left and right fitting projections 13 are provided so as to face each other along the inner circumference. The fitting protrusion 13 is fitted into the fitting recess 12 that is recessed along the circumference of the outer periphery of the stop ring 5, and a pair of protrusions that are opposed to each other on the other end opening side of the rotary shaft cover 10a. The locking piece 14 is locked to a pair of upper and lower key grooves 15 of the plug frame 3 covering the outer periphery of the stop ring 5, whereby the rotary shaft cover 10 a has a required angle with respect to the stop ring 5 and the plug frame 3. It is fixed and held by.

  Further, as shown in FIGS. 1, 2 (a), 5, 6, and 9, the bent cover 10b is an arm portion that extends upward and downward in a substantially arc shape from one end opening side of a cylinder through which the optical cable P can be inserted. 41a and 41b are formed, and a width space and a protruding length of both the arm portions 41a and 41b are formed in the inside of the swivel cover 10c so as to allow bending to the 90 degree angle range of the optical cable P. It is set to the extent possible. Further, one side of each of the arm portions 41a and 41b is closed in a circular shape, and a stepped portion 42 is provided in a part of the arm portions 41a and 41b, and when the 90 ° angle of the bent cover 10b is rotated downward, The step portion 42 is locked on the upper inner surface of the swivel cover 10c.

  Further, as shown in FIGS. 6C to 6F and FIGS. 9A to 9E, the stepped portion 42 of the bent cover 10b is interposed between the rotary shaft cover 10a and the bent cover 10b. The inner cover 10d is formed with a convex portion 43 for engaging and linking, and the inner cover 10d is pushed by the bending cover 10b to be a concave portion between the hinge projections 32 of the rotary shaft cover 10a at a 90 ° bending position. The rotation control unit 16 described above is formed by being locked by 31 and blocking the rotation of the turning cover 10c with respect to the rotary shaft cover 10a.

  In addition, the rotation control unit 16 causes the inner cover 10d to be pushed by the convex portion 43 of the bent cover 10b by the return movement of the bent cover 10b from the 90-degree bent position to the horizontal position, so that the rotation cover 16b contacts the concave portion 31 of the rotary shaft cover 10a. The rotation of the turning cover 10c relative to the rotating shaft cover 10a is allowed by releasing the locking.

  Accordingly, as shown in FIG. 5A, when the boot 8 is in the horizontal position, the turning cover 10c can turn with respect to the rotating shaft cover 10a. In this state, as shown in FIG. 5B, when the direction of the boot 8 is bent in the lower 90 ° direction via the bent cover 10b, the inner cover 10d is pushed by the bent cover 10b. As a result, the inner cover 10d is locked in the recess 31 between the hinge protrusions 32 of the rotating shaft cover 10a, and thus the turning of the turning cover 10c with respect to the rotating shaft cover 10a is prevented.

  Further, when the direction of the boot 8 is returned and rotated in the horizontal direction, as shown in FIGS. 9A to 9D, the inner cover 10d is pushed back in the reverse direction by the bent cover 10b, and again with respect to the rotating shaft cover 10a. Thus, the swivel cover 10c can be swiveled.

  Then, as shown in FIG. 5 (c), after turning the turning cover 10c, for example, 180 degrees, as shown in FIG. 5 (d), the direction of the boot 8 is set to the upper 90 degree direction via the bent cover 10b. When bent, the inner cover 10d is pushed by the bent cover 10b. As a result, the inner cover 10d is locked in the recess 31 between the hinge protrusions 32 of the rotating shaft cover 10a, and thus the turning of the turning cover 10c with respect to the rotating shaft cover 10a is prevented.

  As described above, the caulking ring 6 and the eyelet 7 both made of metal are disposed at the rear portion of the stop ring 5. That is, as shown in FIG. 1, the caulking ring 6 is formed by connecting a large-diameter front cylindrical portion 6a and a small-diameter rear cylindrical portion 6b via a substantially central stepped portion 6c. 6a is fitted to the outer periphery of the rear portion of the stop ring 5 together with the Kevlar P1 inside the sheath P2 from which the optical cable P is cut. Further, the sheath P2 is fixed by caulking the rear cylindrical portion 6b from the outside toward the eyelet 7 side after covering the cut end portion of the sheath P2. In this way, the eyelet 7 and the sheath P2 that is the outer skin are fixed through the caulking of the rear cylinder portion 6b of the caulking ring 6.

  In addition, the plug frame 3 is formed in a round structure, and a pair of guide portions are formed in the vertically symmetric position of the plug frame 3 corresponding to the key holes in the vertically symmetric position formed on the knob 9. It is. When the guide 9 is mounted on the plug frame 3, the guide portions have different widths so that the guide portions are inserted and inserted in one direction into the key holes at the vertically symmetrical positions formed on the tab 9. Is formed.

  Furthermore, as shown in FIG. 1 and FIG. 4, one side of the knob 9 can be inserted into the key hole of the connection adapter to guide the optical outlet adapter Q so as to allow connection from one direction. A guide protrusion 9a is formed.

  FIGS. 10 (a) and 10 (b) show an example of the use of a swivel-bending connector, where M is an outlet box connected to the optical branching box B via a flexible pipe 17, and Q is an outlet box. It is an optical outlet adapter attached to the front plate of M.

  In the figure, an optical outlet adapter Q is connected to an optical branching box B via an optical cable P at the rear end. On the other hand, the swivel / bending connector 1 connected to the personal computer R via the optical cable P is detachably connected at the front end.

Next, an example of assembly / use of the swivel / bending connector of the present invention configured as described above will be described in detail.
First, when forming the movable means 10 according to the present invention, as shown in FIG. 2 (a), the boot 8 is attached to the shaft portion 11 formed on the inner side of one of the swivel covers 10c via the inner cover 10d. The bent cover 10b fixed to the pivot is pivotally mounted, and the left and right swivel covers 10c are patched by pawls so that the flanges of the rotary shaft cover 10a are sandwiched between the one end openings of the left and right swivel covers 10c. They are fitted and fixed to each other by a fitting method (see FIG. 2B).

  At this time, as shown in FIG. 3, the cut end portion of the optical cable P inserted in advance in the boot 8 passes through the bending cover 10b and the rotary shaft cover 10a in the turning cover 10c, and the tip of the rotary shaft cover 10a. Pull out from the outside.

  Then, after the sheath P2 and Kevlar P1 are exposed from the cut end of the optical cable P, the cut end of the sheath P2 is placed on the eyelet 7 disposed on the rear cylinder 6b of the caulking ring 6, and the rear side The eyelet 7 and the sheath P2 are sandwiched and fixed by caulking the tube portion 6b.

  And the front side cylinder part 6a of the crimping ring 6 is fitted to the rear outer periphery of the stop ring 5 together with the Kevlar P1 expanded from the cut end of the sheath P2.

  Thereafter, the movable means 10 together with the boot 8 is moved to the cut end portion side of the optical cable P, and the fitting protrusion 13 of the rotating shaft cover 10a is fitted into the fitting recess 12 of the stop ring 5 by its own bending. Let Then, the fitting protrusion 13 at the tip of the rotary shaft cover 10 a is fitted into the fitting recess 12 on the outer periphery of the stop ring 5, and the pair of upper and lower locking pieces 14 are attached to the plug ring 3 covering the outer periphery of the stop ring 5. The upper and lower key grooves 15 are locked (see FIGS. 1, 3 and 5).

  The tip of the optical fiber core a is inserted into the ferrule 2 and bonded with an adhesive or the like, so that the optical fiber core a is fixed. The ferrule 2 has a flange 21 press-fitted and held at the rear end thereof.

  Then, the spring 4 is inserted from the rear end of the flange 21 of the ferrule 2, and the plug frame 3 and the stop ring 5 are respectively inserted and arranged at predetermined positions. At this time, the convex portion 5 a provided above the stop ring 5 serves as an insertion guide for the plug frame 3, while the hook portion 3 a provided below the stop ring 5 engages with the locking hole 3 b of the plug frame 3. Stops it when it is stopped.

  At this time, the spring 4 is disposed so as to be sandwiched between the flange 21 at the rear end of the ferrule 2 and the stop ring 5 and acts so as to constantly bias the ferrule 2 forward.

  Finally, the knob 9 is put on the outside of the plug frame 3 and the stop ring 5. At this time, the plug frame 3 is inserted and inserted in one direction into the key hole at the vertically symmetrical position formed in the knob 9 (see FIG. 4).

  When using the swivel / bending connector 1, as shown in FIG. 10 (a), the swivel connector 1 is connected to the optical outlet adapter Q built in the outlet box M installed on the wall surface of the room to connect various optical communication devices. The bendable connector 1 is connected.

  For example, when the counterpart optical connector plug 1 from the personal computer R is connected to the counterpart terminal of the optical outlet adapter Q, the personal computer R is arranged below the optical outlet adapter Q as shown in FIG. If it is, the turning cover 10c of the movable means 10 is turned with respect to the rotating shaft cover 10a, and the bending cover 10b is rotated up to 90 degrees below the turning cover 10c.

  At this time, as shown in FIG. 5 (a), when the boot 8 is in the horizontal position, the turning cover 10c can turn with respect to the rotary shaft cover 10a. Then, as shown in FIG. 5 (b), when the boot 8 is bent in the lower 90-degree direction via the bent cover 10b, the inner cover 10d is pushed by the bent cover 10b, and the inner cover 10d is rotated. Since it is latched by the recessed part 31 between the hinge projection parts 32 of the cover 10a, turning of the turning cover 10c with respect to the rotating shaft cover 10a is prevented. Thus, the boot 8 and the optical cable P are rotated so as to extend downward.

On the other hand, when the personal computer R is arranged above the optical outlet adapter Q,
When the boot 8 is returned and rotated in the horizontal direction, as shown in FIGS. 9A to 9D, the inner cover 10d is pushed back in the reverse direction by the bent cover 10b, and again the revolving cover 10c with respect to the rotating shaft cover 10a. Will be able to turn.

  Then, as shown in FIG. 5C, after turning the turning cover 10c, for example, 180 degrees, as shown in FIG. 5D, the boot 8 is bent in the upper 90-degree direction via the bending cover 10b. . At this time, the inner cover 10d is pushed by the bent cover 10b, and the inner cover 10d is locked to the recess 31 between the hinge protrusions 32 of the rotary shaft cover 10a. Is prevented from turning. Thus, the boot 8 and the optical cable P are rotated so as to extend upward.

  In this way, the boot 8 is bent and rotated by 90 degrees after turning 180 degrees through the movable means 10, so that the optical outlet adapter Q is installed on the lower side or upper side of the wall surface or on the ceiling or the like. However, the external swivel / flexible connector 1 itself connected to the optical outlet adapter Q does not become an obstacle to peripheral devices. Moreover, since the boot 8 is bent at 90 degrees via the movable means 10, the bending radius (for example, R15) of the optical cable P can be sufficiently taken, and an increase in transmission loss is suppressed.

It is sectional drawing seen from the side surface which shows an example of the turning bending type connector in the best form for implementing this invention. The internal structure of the movable means of a turning bending type connector is similarly shown, (a) is an exploded perspective view, (b) is a perspective view of the assembled state of the movable means. Similarly, it is a perspective view of a state in which a plug frame, a stop ring, a caulking ring, and movable means (a rotating shaft cover, a turning cover, a bent cover integrated with a boot, and an inner cover) are disassembled. Similarly, a plug frame, a stop ring, a caulking ring, a movable means (a rotating shaft cover, a turning cover, a bent cover integrated with a boot, and an inner cover) are assembled, and a perspective view in a state where a knob is attached. Similarly, the operation of the movable means will be described. (A) is a cross-sectional view of a state in which the boot extends linearly, (b) is a cross-sectional view of the state in which the boot is bent downward by 90 degrees by the movable means, (C) is a cross-sectional view of the state in which the boot is turned 180 degrees by the movable means, and (d) is a cross-sectional view of the state after the turn is bent upward by 90 degrees by the movable means. Similarly, the operation of the movable means will be described. (A) is a side view of the swivel cover, (b) is a side view of a bent cover having an inner cover, and (c) is a bent cover in a horizontal position with respect to the swivel cover. Sectional view of a state, (d) is a sectional view of the bent cover rotated 45 degrees downward with respect to the swivel cover, and (e) is a bent cover of 90 degrees below the swivel cover. (F) is a cross-sectional view of the bent cover rotated 45 degrees upward from the position (e). FIG. 2 also shows an example of the configuration of the rotation control unit in the movable means, where (a) is a side view of the rotary shaft cover, (b) is a side view of the swivel cover, and (c) is a cross-sectional view as seen from the side of the swivel cover. It is. Similarly, the turning angle fixing operation in the movable means will be described. (A) is a partially cutaway side view of the state where the turning cover is in a fixed position with respect to the rotating shaft cover, (b) is also a rear view, and (c). Is a partially cutaway side view of the rotating cover rotated 90 degrees from the fixed position with respect to the rotating shaft cover, (d) is also a rear view, and (e) is 180 degrees from the fixed position with respect to the rotating shaft cover. (F) is a rear view, (g) is a partially cutaway side view with the swivel cover turned 270 degrees from a fixed position with respect to the rotary shaft cover, (h) Is a rear view. Similarly, the operation of the rotation control unit in the movable means will be described. (A) is a cross-sectional view showing a state in which the bent cover is bent 90 degrees downward in the swivel cover, and (b) is from the state of (a). A cross-sectional view of the state in which the bent cover is rotated back to the upper side by 45 degrees, (c) is a cross-sectional view of the bent cover in a state of returning and rotating horizontally, and (d) is a swivel cover that is rotated 180 degrees after the bent cover is returned and rotated in the horizontal direction. (E) is an expanded sectional view of the rotation control part in the state of (a). The example of the use condition of a turning bending type connector is shown, (a) is a partially cutaway sectional view of a state where the turning bending type connector is connected to an optical outlet adapter provided in an outlet box installed on the wall surface. b) is a partially cutaway sectional view showing a use state when the personal computer is arranged on the lower side of the optical outlet adapter.

P Optical cable P1 Kevlar P2 Sheath Q Optical outlet adapter R Personal computer M Outlet box B Optical branch box a Optical fiber core wire 1 Bending connector 2 Ferrule 3 Plug frame 3a Hook part 3b Locking hole 4 Spring 5 Stop ring 5a Convex part 6 Caulking Ring 6a Front side cylinder part 6b Rear side cylinder part 6c Stepped part 7 Eyelet 8 Boot 9 Knob 10 Movable means 10a Rotating shaft cover 10b Bending cover 10c Revolving cover 10d Inner cover 11 Shaft part 12 Fitting recess 13 Fitting protrusion 14 Locking Fragment 15 Key groove 16 Rotation control part 17 Flexible pipe 21 Flange 31 Recess 32 Hinge protrusion 33 Projection 34 Guide groove 35 Projection 36 Locking recess 37 Recess 41a, 41b Arm part 42 Step part 43 Projection

Claims (6)

A ferrule in which an optical fiber of an optical cable is inserted and fixed, and a flange is press-fitted and held at the rear end, a stop ring that supports the rear end of a spring that contacts the rear end of the flange and biases the ferrule forward, A plug frame that covers each member; a caulking ring that fixes a Kevlar of an optical cable to the stop ring; and a swivel-bend-type connector in which a boot is attached to the stop ring via a movable means, the movable means including the boot thereby allowing pivoting around a horizontal axis in the forward and reverse rotation direction, so that the bendable formed in one direction a bending direction of the boot after pivoting with respect to the horizontal axis, the rotation shaft cover that is fitted and fixed to the stop ring A revolving cover that is connected to the revolving shaft cover so as to be able to revolve in the forward and reverse rotation directions around the horizontal axis, and the revolving cover is connected to the horizontal axis in the revolving cover. Pivoting articulated connector, characterized by comprising a bent cover is bent freely interlocking formed by and fixed to the boot to the rear end up to 90 degrees in one direction. The movable means has a plurality of recesses along the inner periphery of the swivel cover to which the rotary shaft cover is fitted, and each of the recesses has a plurality of convex portions protruding toward the front of the opening end of the rotary shaft cover. The swivel-bending connector according to claim 1 , wherein the swivel-flexing connector is formed so as to be engaged with each other so that the swivel cover can be fixed at an arbitrary swivel angle position. The movable means includes an arcuate guide groove formed on the inner surface of the swivel cover, and a convex portion protruding from the bent cover so as to engage with the guide groove, and the bent cover is at a horizontal position and an angular position of 90 degrees. The swivel-bending connector according to claim 1 , wherein the guide groove is provided with a concave portion that allows the convex portion of the bent cover to be fitted to both ends of the guide groove so as to be fixed. The movable means has an inner cover interposed between the rotating shaft cover and the bent cover, and the inner cover is pushed by the bent cover and is locked to the rotating shaft cover at a 90-degree bent position so as to rotate with respect to the rotating shaft cover. The swivel / bending connector according to any one of claims 1 to 3 , wherein the rotation shaft cover is provided with an uneven rotation control unit so as to prevent rotation of the cover. The rotation control unit is configured such that the inner cover is pushed by the bent cover by the return movement from the 90-degree bent position to the horizontal position of the bent cover, and the engagement with the rotary shaft cover is released, thereby releasing the swivel cover from the rotary shaft cover. The swivel-bending connector according to claim 4 , which is formed to allow rotation. The stop ring and the rotating shaft cover are a pair of left and right fitting protrusions that protrude along the inner periphery of the opening end of the rotating shaft cover in the fitting recess recessed along the circumference of the outer periphery of the stop ring. It causes the mated upper and lower pair of locking pieces projecting from the open end of the rotary shaft cover, to claim 1 is fixed by engaged to the pair of upper and lower keyway of the plug frame which covers the stop ring outer periphery 5. A swivel-bending connector as described in any one of 5 above.

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