JP4593660B2 - Optical connector assembly tool - Google Patents

Description

  The present invention relates to an optical connector assembly tool.

  In recent years, with the spread of FTTH (Fiber To The Home), etc., optical communication networks are used in general homes. As a result, mechanical connectors are used to assemble optical connectors without connecting power and without polishing at connection sites and connect optical fibers. Connectors have come into use. (For example, see Patent Documents 1 to 5)

18 to 21 show an example of this type of mechanical connection type optical connector.
As shown in FIG. 18, the mechanical connection type optical connector includes a connecting substrate 10 having a groove portion 12 having a flange portion 12 at a front portion 11 and mounting an end portion of an optical fiber on a surface 13, and the groove 14. A cover 20, covering the cover 20 and the connection substrate 10, a pressing member 30 for applying stress so that the mating surfaces of the cover 20 and the connection substrate 10 are pressed against each other, and a built-in optical fiber 41 embedded in one end 42 The ferrule 40 is fixed in the flange 12 and the built-in optical fiber 41 is exposed from one end 42 thereof and mounted on the groove 14, and the other end 43 is disposed with the end face of the built-in optical fiber 41. As shown in FIG. 19, the connecting part 50 covers the pressing member 30, the pressing member 30 and the slidable stop ring 60, and the connecting part 50 is disposed inside the stop ring 60 with a predetermined force. A spring 70 for pressing towards a plug frame 80 covering the flange portion 12 is constituted out with the plug frame 80 is arranged outside slidably configured slider 90 (see FIG. 20-21).

  The mechanical connection portion includes the connection substrate 10 having the groove 14, the lid 20, and the pressing member 30.

As shown in FIG. 18, the groove 14 formed on the surface 13 of the connection substrate 10 includes a small-diameter groove 14 ′ on which a bare optical fiber of an optical fiber core (cord) to be connected is placed, and a top of the bare optical fiber. And a large-diameter groove 14 ″ for placing the optical fiber core (cord) portion having a reinforcing coating thereon.
The lid 20 includes a small-diameter groove lid 20 ′ covering the small-diameter groove 14 ′ and a large-diameter groove lid 20 ″ covering the large-diameter groove 14 ″. However, the lid 20 is not configured separately, and a configuration in which both are integrated is also used.

The pressing member 30 has a structure in which a plate-like member having a steel property such as a stainless material is processed into a C-shaped or U-shaped cross section, and an opening 31 is formed on a part of the side surface. .
When the cover 20 is put on the groove 14, it is attached to the opening 31 of the pressing member 30 so that the mating surfaces can be faced. Further, as shown in FIG. 19, notches 15 and 21 are formed on the lid 20 of the mating surface and the side of the connection substrate 10 so that the insertion portion 101 of the wedge 100 can be easily inserted.

  The ferrule 40 has a built-in optical fiber 41 disposed therein, and one end 42 of the flange 12 of the connection board 10 is previously embedded in a factory or the like, and the built-in optical fiber 41 exposed from the ferrule 40 is connected to the connection board. 10 grooves 14 are mounted. Further, the end surface of the built-in optical fiber 41 is mirror-polished together with the end surface of the ferrule 40 in advance in a factory or the like so that the other end of the ferrule 40 coincides with the end surface.

  When the stop ring 60 is assembled, an opening 61 is formed on the side surface so that the opening 31 of the pressing member 30 can face the side surface of the stop ring.

  In such an optical connector, the connection part 50 in a state in which the cover 20 is put on the groove 14 in advance and both the cover 20 and the connection substrate 10 are pressed with a predetermined force by the tightening force of the pressing member 30. The spring 70 is arranged on the small diameter portion on the rear end side of the connection part 50, the plug frame 80 is put on the connection part 50, and the stop ring 60 is fitted into the plug frame 80.

  As a result, as shown in FIG. 20, the stop ring 60 is engaged with the engagement protrusions 62 formed on the outer periphery of the stop ring 60 in the engagement through holes 81 formed on the outer periphery of the plug frame 80 and connected to the inside. A structure integrated with the plug frame 80 in a state of including the parts 50 is configured. At this time, the opening 61 formed on the outer periphery of the stop ring 60 is assembled so that the opening 31 of the pressing member 30 and the notches 15 and 21 formed on the mating surface of the connection substrate 10 and the lid 20 are aligned. It is done. Moreover, the spring 70 is arrange | positioned in the stop ring 60 in the compression state, and is pressing the connection part 50 ahead (ferrule 40 side).

  To connect an optical fiber cord (cord) at the connection site using such an optical connector, after stripping the resin coating layer at the end of the optical fiber cord (cord) and exposing the bare optical fiber The bare optical fiber having a predetermined length whose end face is a mirror end face is exposed by the optical fiber cutter.

  Next, the insertion portion 101 of the wedge 100 is inserted into the notch portions 15 and 21 against the pressing force of the pressing member 30 through the opening 61 of the stop ring and the opening portion 31 of the pressing member 30 assembled in advance. Thereby, the space | interval of the connection board | substrate 10 and the lid | cover 20 is extended by fixed length, and the space formed in the mating surface of the connection board | substrate 10 and the lid | cover 20 is expanded.

In this state, an optical fiber core (cord) in which the bare optical fiber is exposed for a certain length from the rear end side of the stop ring 60 is inserted along the groove 14, and the bare optical fiber is inserted into the small-diameter groove 14 ′ and the resin coating layer is large. While being arranged on the radial groove 14 ″, the end face of the bare optical fiber and the end face of the built-in optical fiber 41 are brought into contact with each other on the small diameter groove 14 ′, and the wedge 100 is further removed from the notches 15 and 21 in this state.
At this time, a colorless transparent and grease-like refractive index matching agent is arranged in advance on the end face of the bare optical fiber or the contact end face of the built-in optical fiber 41, and reflects light when the end faces of both optical fibers come into contact with each other. Optical connections are made in a reduced manner. Thus, the optical fiber core (cord) placed on the groove 14 is pressed and fixed and held on the large-diameter groove 14 '' by the lid 20, and the bare optical fiber and the built-in optical fiber 41 Are optically connected on the small-diameter groove 14 '.
Next, the optical connector in which the slider 90 is covered from the plug frame 80 side and the built-in optical fiber 41 and the optical fiber core wire (cord) are optically connected is completed. (See Figures 20 and 21)

  In the optical connector configured as described above, the ferrule 40 is inserted into the split sleeve 112 from one end 111 of the connection adapter 110 and into the split sleeve 112 from the other end 113 side of the connection adapter 110, as shown in FIG. The optical connection is made with the other optical connector inserted or other optical components arranged on the other end side. At this time, the engagement protrusion 114 formed in the connection adapter 110 is fitted into the engagement recess 82 formed on the outer periphery of the plug frame 80, and the optical connector is prevented from being detached from the connection adapter 110. Further, the fitting engagement is released by pulling the slider 90 away from the connection adapter 110, and the optical connector can be pulled out from the connection adapter 110.

JP-A-10-206688 JP-A-11-142686 JP-A-11-142687 JP-A-11-160563 JP 2000-347068 A

  The above field connection type optical connector connects optical fiber cores with bare optical fiber diameters of 0.125mmφ and 0.9mmφ, and cannot be applied to drop optical cables or indoor optical cables that have a cable sheath on the outside. It was. That is, these optical cables have a sheath outer diameter of about 2 mm × 3 mm, and the sheath portion cannot be gripped by the mechanical connection portion. Therefore, as shown in FIG. 17, it is conceivable to attach the cable gripping portion 130 that mechanically grips the sheath 124 of the optical cable 120 to the rear end portion 50 ′ of the connection part 50 with an adhesive or the like.

  However, in this case, the bending stress S applied in the radial direction of the connection part 50 via the optical cable 120 or the like acts directly on the ferrule 40 to move the ferrule 40, and deteriorates the optical connection loss with other optical connectors or adapters. In the worst case, the stress concentrates on the base portion P of the substrate 12 in the vicinity of the flange 12, and the connection substrate 10 is broken at that portion.

  Conventionally, an assembly tool for assembling such an optical connector has a wedge 100 having an insertion portion 101 as shown in FIG. 19, but the insertion portion 101 is appropriately fitted into the narrow notches 15 and 21. The operation is troublesome, and when the insertion portion 101 is pulled out from the notches 15 and 21, it must be pulled out from the portion fastened by the pressing member 30 with a large force. There is a problem that the bare optical fiber fitted into the optical fiber moves and the connection loss with the built-in optical fiber 41 increases.

The present invention has been made in view of the above, a ferrule incorporating an optical fiber is arranged at one end, a connection board for mounting the optical fiber to be connected to the optical fiber to the other end, the connection Light to be connected to the mechanical connection portion of a connection part in which a mechanical connection portion configured by a cover that covers the substrate and a stress applying member that applies stress in a direction in which the connection substrate and the cover approach each other is arranged in the assembly tool of the optical connector to place the fiber, the assembly tool and the tool frame having a part housing portion to form a space for accommodating the connection part, pivotally mounted parts housed beneath the side walls of the tool frame part plugged against stress of the stress applying members between a connection substrate and the lid of the housing and arranged connection parts to widen the distance between the substrate and the lid Comprising a rust and a wedge release portion is pulled out the wedge from between the substrate and the lid, the wedge release portion has one end fixed to the side wall of the tool frame and the other end in a free pair of arms A knob arranged to face the other free end of the arm, and a tapered portion arranged to face both side surfaces of the wedge on the inside of the knob. By bringing them closer to each other, the tapered portion contacts and presses the inside of the wedge base, moves the wedge below the tool frame, and pulls the wedge inserted between the connection substrate and the lid back. Features.

  The present invention resists the stress of the stress applying member between a parts storage part in which a space part for storing connection parts is formed, and a connection board and a lid of the connection parts stored and arranged in the part storage part. Since it has a wedge that is inserted to push the gap between the substrate and the lid and a wedge release portion that pulls the wedge inserted between the connection substrate and the lid, the wedge is correctly guided to the notches 15 and 21. The wedges can be easily inserted into the notches 15 and 21, and the wedges can be easily pulled out by operating the knob. The bare optical fiber fitted in the mechanical connection part and the built-in optical fiber It is possible to provide connection parts that do not increase the connection loss.

  The present invention can adopt the following various embodiments.

  The wedge release portion is characterized in that the taper portion moves the wedge in a direction in which the wedge is pulled back by bringing a pair of knobs formed with taper portions arranged on both sides of the wedge closer to each other.

  The wedge is characterized in that it has a rotating shaft formed therein.

  The wedge release unit is characterized by including a limiting mechanism for preventing the mutual picking from approaching a predetermined value or less.

  The wedge release portion is characterized in that an improper pressing prevention wall that makes it difficult to operate the knob is formed around the knob.

  The present invention will be described below with reference to illustrated embodiments. 1 to 3 illustrate an embodiment of the optical connector of the present invention. 1 to 3, the same reference numerals as those in FIGS. 18 to 21 denote the same components as in FIGS.

1-3, 120 is an optical fiber cable, 130 is a cable holding part.
Engaging recesses 10b and 20''b are formed in the rear end 10a of the connection substrate 10 and the rear end 20''a of the lid 20 ''.

  The optical cable 120 is a drop optical cable, an indoor optical cable, or the like, and a resin coating layer 122 is coated on the bare optical fiber 121 to form an optical fiber core 123, and a sheath 124 is coated thereon, and the outer diameter is increased. It is formed to have a cross-sectional shape of 2 mm x 3 mm.

  The cable gripping portion 130 is disposed so as to cover the end portion of the sheath 124 where the optical fiber core wire 123 is exposed by peeling off the sheath 124 at the end portion of the optical cable 120, and the optical cable 120 is resistant to mechanical stress. It is attached integrally. Further, an engagement protrusion 130b directed in the center direction is formed on the front portion 130a of the cable gripping portion 130, and the engagement protrusion 130b is fitted into the engagement recesses 10b and 20''b to prevent the connection part 50 from rattling. It is mechanically connected and combined.

  The slider 90 is configured such that the inner diameter of the rear end portion thereof is slightly larger than the outer diameter of the cable gripping portion 130, and the rear end portion of the slider 90 covers the cable gripping portion 130 so as to be slidable.

  The optical connector configured in this way does not directly act on the connecting part due to the rattle even when a radial force is applied to the optical cable in the vicinity of the optical connector, and the range of movement is also the rear end of the slider. Therefore, the stress is not concentrated on the base portion of the substrate in the vicinity of the flange portion 12, and the connection substrate 10 is not destroyed.

  4 to 11 show another embodiment of the optical connector according to the present invention. In this embodiment, compared to the above embodiment, the cable gripping portion 130 is composed of a gripping member 131 that mechanically grips the sheath 124 of the optical cable 120 and a gripping component storage portion 136 that stores and arranges the gripping member 131. The point is greatly different.

  As shown in FIG. 7, the gripping member 131 is formed with a groove 132 having a concave shape or a U shape from one end to the other end, and an engaging projection 132 ′ is formed on the side wall of the groove. The optical cable 120 is prevented from moving in the longitudinal direction by biting into the sheath 124 of 120.

  The gripping component storage unit 136 has a storage chamber 137 for storing the gripping member 131, and a lid 138 rotates around the rotation shaft 139 in the storage chamber 137 to close or open the upper portion of the storage chamber 137. You can also. Further, an engagement protrusion 136b that engages with engagement recesses 10b and 20''b formed in the rear part of the connection part 50 is formed on the front part 136a of the gripping component storage part 136. 136b is fitted into the engaging recesses 10b and 20''b, and is mechanically coupled to the connecting part 50 with a backlash.

  The gripping component storage part 136 is further formed with a guide groove 136C on the front part 136a side so that the bare optical fiber to be connected can be guided to the mechanical splice part.

  On the inner side of the lid 138, there is a pushing projection 138 ′ for holding the gripping member 131 disposed in the storage chamber 137 against the rear end side of the storage chamber 137 when the lid 138 is closed on the storage chamber 137. Is formed. Further, a slit 138 ″ is formed in the central portion of the lid 138 so as to be able to face the entrance portion of the mechanical connection portion.

Hereinafter, this embodiment will be described in more detail in the order of assembly.
First, as shown in FIG. 7, a part of the sheath 124 and a part of the resin coating layer 122 of the optical fiber core 123 are peeled off from the end of the optical cable 120 to be connected, and the bare optical fiber 121 and the resin coating are removed. The end of the optical cable 120 with the layer 122 exposed is formed, and the end of the optical cable is pushed into the groove 132 from above the groove along the groove 132 of the gripping member 131, and the engagement protrusion 132 ′ in the groove 132 is inserted. The sheath 124 is bitten. As a result, the gripping member 131 is integrally fixed in the longitudinal direction of the optical cable 120.

Next, as shown in FIG. 8, the lid 138 is opened, and the optical cable 120 with the gripping member 131 disposed at the end as described above is connected from the storage chamber 137 to the connection substrate 10 of the mechanical connection portion with the bare optical fiber 121 first. Insert between lid 20. At this time, as described in the prior art, the connecting surface of the connection substrate 10 and the lid 20 has wedges inserted into the notches formed in the connection substrate 10 and the lid 20, respectively, The optical fiber core wire 123 and the like can be inserted between the connection substrate 10 and the lid 20. As a result, the end of the bare optical fiber 121 is disposed in abutment with the end of the built-in optical fiber disposed on the connection substrate 10. In this state, the inserted wedge is removed. Thus, the end of the bare optical fiber 121 is abutted with the end of the built-in optical fiber and mechanically connected. FIG. 9 shows the state at this time.

  Next, as shown in FIG. 10, the gripping member 131 is moved to the rear part of the storage chamber 137 and the lid 138 is closed. When the lid 138 is closed, the pushing protrusion 138 ′ formed on the lid 138 presses the front part of the gripping member 131 to the rear side, and the gripping member 131 is fixed in the storage chamber 137 while being pressed against the rear part of the storage chamber 137. Is done. At this time, the optical fiber core wire 123 is arranged in a slightly bent state in the storage chamber 137. Therefore, the length of the bare optical fiber 121 or the like and the length of the resin coating layer 122 exposed from the sheath 124 are cut to a predetermined length so as to achieve this.

  Next, as shown in FIG. 11, a slider 90 is placed on the plug frame 80 from the ferrule 40 side to complete the optical connector.

  In the optical connector of this embodiment, the rear end of the slider 90 covers the outer periphery of the cable gripper 131 so as to be slidable as in the above-described embodiment. Therefore, as in the above embodiment, even if a radial force is applied to the optical cable in the vicinity of the optical connector, the force does not directly act on the connecting parts due to the rattling, and the range of movement is also the rear end of the slider 90. Therefore, the stress is not concentrated on the base portion of the substrate in the vicinity of the flange portion 12, and the connection substrate 10 is not destroyed.

  FIGS. 12 to 14 show an embodiment of the optical connector assembly tool 140 of the present invention that is particularly effective when assembling the optical connector of the present invention. In FIG. 12, the optical connector assembly tool 140 includes a tool frame 141, a wedge 150 that rotates downward about a rotation shaft 143 formed on a side wall 142 of the tool frame 141, and both side walls of the tool frame 141. 142 and a wedge releasing portion 160 attached to 142.

  In the tool frame 141, each of the pair of side walls 142 is connected at the front (left side of FIG. 12 (a)) upper part 144, and further connected at the rear lower part 145 (see FIG. 12 (e)). Is formed with a parts storage section 146 (see FIG. 12D) capable of storing the connection parts of the optical connector to be assembled.

  In the wedge 150, arms 151 extending from the rotation shafts 143 of the both side walls 142 are connected by a base 152, two V-shaped blades 153 are mounted on the base 152, and the blades 153 are below the tool frame 141. It is arranged so as to face upward. As described above, the wedge 150 is formed to be rotatable around the rotation shaft 143. The wedge 150 is shown shaded in FIG.

The wedge release portion 160 is disposed so as to be fitted into a notch 147 formed in the center portion of both side walls 142, one end 161 thereof is fixed integrally with the side wall 142, and the other end 162 is in a free state. (See FIG. 12C). Further, knobs 163 are arranged on the other end 162 side so as to face each other, and a tapered portion 164 is formed inside the knobs 163 facing each other. Then, by operating the knob 163 so as to approach each other against the elastic deformation of the arm constituting the one end 161 side of the wedge releasing portion 160, the taper portion 164 contacts and presses the inside of the base 152 of the wedge 150. The wedge 150 can be moved below the tool frame 141. Further, a restriction mechanism 165 protruding in a direction facing each other is provided at the tip on the other end 162 side. When the knob 163 is brought close to each other, the restriction mechanism 165 hits each other so that the knob 163 does not come within a predetermined value. It is supposed to be limited to.
An erroneous pressing prevention wall 148 that makes it difficult to operate the knob 163 is formed on the side wall 142 around the knob 163 of the wedge release portion 160.

Next, the operation method in the case of assembling the optical connector of the said Example 2 is demonstrated using FIGS.
First, as shown in FIG. 13, a connection part 50 which is an internal part of the optical connector and a gripping part storage part integrally attached to the rear part of the connection part 50 in the parts storage part 146 (see FIG. 14A). And a connecting part with a gripping part storage unit configured by 136. In FIG. 13 (a), the gripping component storage 136 is shown shaded. In FIG. 13B, the connecting part 50 is shown shaded.

  Next, the base 152 is pushed in the direction of the arrow shown in FIG. 14B (the direction from the lower side to the upper side of the optical connector assembly tool 140). Thereby, the blade 153 arranged on the base 152 passes through the opening 61 of the stop ring 60 and the opening 31 of the pressing member 30 constituting a part of the connection part 50, and the pressing member 30 to the notches 15 and 21. Inserted against the pressing force. Thereby, the space | interval of the connection board | substrate 10 and the lid | cover 20 is extended by fixed length, and the space formed in the mating surface of the connection board | substrate 10 and the lid | cover 20 is expanded.

  Next, as shown in FIG. 13, the cover 138 is opened, and the optical cable 120 on which the gripping member 131 is arranged is connected to the connection board constituting the mechanical connection portion via the storage chamber 137 with the bare optical fiber 121 first. 10 and the lid 20. As a result, the tip of the bare optical fiber 121 comes into contact with the tip of the built-in optical fiber. When the tip of the bare optical fiber 121 and the tip of the built-in optical fiber come into contact with each other, the bare optical fiber 121 cannot move further toward the built-in optical fiber, so that the optical fiber core 123 is bent at the rear end side of the connection part 50. Mu Thereby, it can be confirmed that the tip of the bare optical fiber 121 is in contact with the tip of the built-in optical fiber.

  After the tip of the bare optical fiber 121 comes into contact with the tip of the built-in optical fiber, the knobs 164 arranged on the both side walls 142 are operated so as to approach each other, as shown in FIG. As a result, the tapered portion 165 contacts and presses the inside of the base 152 of the wedge 150, moves the wedge 150 below the tool frame 141, and the blade 153 is removed from between the connection substrate 10 and the lid 20. It is done. As a result, the space between the connection substrate 10 and the lid 20 is narrowed by the clamping force of the pressing member 30, and the bare optical fiber 121 and the optical fiber core wire 123 are mechanically fixed and arranged between the connection substrate 10 and the lid 20. Is done.

  Next, the gripping member 131 is moved to the rear part of the storage chamber 137 and the lid 138 is closed. When the lid 138 is closed, as described in the second embodiment, the pushing protrusion 138 ′ formed on the lid 138 presses the front part of the gripping member 131 backward, and the gripping member 131 is pressed against the rear part of the storage chamber 137. In this state, it is fixed in the storage chamber 137 (see FIG. 10).

  Next, the connection part to which the optical fiber cable is mechanically connected in this way is taken out from the optical connector assembly tool 140, and the slider 90 is put on the plug frame 80 from the ferrule 40 side to complete the optical connector.

  This optical connector assembling tool includes a part storage part 146 in which a space part for storing the connection part 50 is formed, and the connection board 10 and the lid 20 of the connection part 50 stored and arranged in the part storage part 146. A wedge 150 that is inserted against the stress of the stress applying member 30 to increase the distance between the connection substrate 10 and the lid 20 and a wedge release portion 160 that pulls back the wedge 150 inserted between the connection substrate 10 and the lid 20. Therefore, the wedge 150 can be correctly guided to the notches 15 and 21, the wedge 150 can be easily inserted into the notches 15 and 21, and the wedge 160 can be easily operated by operating the knob 160. 150 can be pulled out, and connection parts that do not increase the connection loss between the bare optical fiber 121 fitted in the mechanical connection portion and the built-in optical fiber can be accommodated. It is possible to provide in.

15 and 16 show another embodiment of the optical connector assembly tool according to the present invention. This embodiment is characterized in that an optical fiber guiding adapter 170 is mounted on the rear lower part 145 of the optical connector assembling tool of the third embodiment shown in FIG.
This optical connector assembling tool is used for assembling a conventional optical connector by incorporating a conventional optical fiber core wire (cord) into the conventional connection part 50 shown in FIGS.

  The optical fiber guiding adapter 170 has a guide groove 173 formed in the center from one end 171 to the other end 172, and the outer diameter in the width direction is slightly smaller than the width of the part storage portion 146 in the rear lower portion 145. And is detachably disposed in the parts storage portion 146 in the rear lower portion 145.

The guide groove 173 is formed on the one end 171 side so as to be able to guide a bare optical fiber to be connected to the mechanical splice portion of the connection part 50. Therefore, the bare optical fiber can be easily inserted into the mechanical splice portion by moving the bare optical fiber of the optical fiber core wire (cord) to be connected along the guide groove.
Since the operations of the wedge 150 and the wedge releasing unit 160 are the same as those in the third embodiment, the description thereof is omitted.
Thereby, it is possible to provide a connection part in which an optical fiber core (cord) to be connected is connected to the built-in optical fiber with reduced connection loss.

Cross-sectional explanatory drawing which shows one Example of this invention. Sectional explanatory drawing in the middle of the assembly in one Example of FIG. Sectional explanatory drawing in the middle of the other assembly in one Example of FIG. Plane sectional explanatory drawing which shows the other Example of this invention. Side surface explanatory drawing in the Example of FIG. 4 is a side view showing a part of the component in the embodiment. 4A and 4B are diagrams for explaining an optical cable used in the embodiment of FIG. FIG. 5 is a plan view of the assembly in the embodiment of FIG. Side surface explanatory drawing which shows the middle of assembly different from FIG. Side surface explanatory drawing which shows the middle of further assembly different from FIG. FIG. 11 is a side cross-sectional explanatory view showing a part of the assembly further different from FIG. 10. Another embodiment of the present invention will be described. A is a plan view, B is a side view, C is a side view during other operations, D is a cross-sectional view taken along line AA in FIG. E is a sectional view taken along line BB in FIG. FIG. 13 is a plan view of the assembly in the embodiment of FIG. (A) to (c) are cross-sectional explanatory views at different operations in the embodiment of FIG. FIG. 9 shows still another embodiment of the present invention, in which A is a plan view and B is a plan sectional view. FIG. 16 is a plan view illustrating the assembly process in the embodiment of FIG. Sectional drawing of the optical connector in the process leading to this invention. The perspective view of the principal part components of a general field connection type optical connector. The perspective view of the further different principal part of a general field connection type optical connector. Explanatory drawing which shows the connection form of the conventional optical connector. The operation | movement description for demonstrating the subject in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connection board | substrate 10a Rear end 10b Engaging recessed part 11 Front part 12 Gutter part 13 Surface 14 Groove 14 'Small diameter groove 14''Large diameter groove 15 Notch part 20 Lid 20' Small diameter groove cover 20 '' Large diameter groove cover 21 Notch 30 Pressing member 31 Opening 40 Ferrule 41 Built-in optical fiber 42 One end 45 Other end 50 Connection part 50 Rear end 60 Stop ring 61 Opening 62 Engaging projection 70 Spring 80 Plug frame 81 Engaging through hole 82 Engaging recess 90 Slider
DESCRIPTION OF SYMBOLS 100 Wedge 101 Plug part 110 Connection adapter 111 One end 112 Split sleeve 113 Other end 113 Bare optical fiber 114 Engagement protrusion 120 Optical cable 121 Bare optical fiber 122 Resin coating layer 123 Optical fiber core wire 124 Sheath 130 Cable grip part 130b Engagement protrusion 130a Front 131 Holding member 132 Engagement protrusion 132 Groove 136 Holding component storage part 136a Front part 136b Engagement protrusion 137 Storage chamber 138 Lid 138 'Pushing protrusion 139 Rotating shaft 140 Optical connector assembly tool 141 Tool frame 142 Side wall 143 Rotating shaft 144 Upper part 145 Rear lower part 146 Parts storage part 147 Notch 148 Incorrect pressing prevention wall 150 Wedge 151 Arm 152 Base 153 Blade 160 Wedge release part 161 One end 162 Other end 163 Knob 164 Taper part 170 Optical fiber guide adapter P Substrate root S Stress

Claims (3)

One end ferrule incorporating an optical fiber is arranged in a connection substrate for mounting an optical fiber to be connected to the optical fiber at the other end, and a lid for covering the top of the connection board, and the connection substrate and the lid In the assembly tool of the optical connector for arranging the optical fiber to be connected to the mechanical connection part of the connection part in which the mechanical connection part constituted by a stress applying member that applies stress in a direction approaching each other is arranged,
The assembly tool is connected to a tool frame having a part storage part that forms a space part for storing connection parts, and a connection part that is rotatably mounted on the side wall of the tool frame and stored and arranged in the part storage part. A wedge inserted between the substrate and the lid against the stress of the stress applying member to push the gap between the substrate and the lid, and a wedge releasing portion for removing the wedge from between the substrate and the lid; With
The wedge release portion is a pair of arms, one end of which is fixed to the side wall of the tool frame and the other end is free, and is arranged to face the free other end of the arm; and the knob A tapered portion disposed so as to face both side surfaces of the wedge, and by bringing the knob close to each other, the tapered portion contacts and presses the inside of the wedge base, An optical connector assembling tool, wherein the wedge is moved below the tool frame and the wedge inserted between the connection board and the lid is pulled back.   The optical connector assembling tool according to claim 1, wherein the wedge release portion includes a limiting mechanism for preventing the mutual knobs from approaching a predetermined value or less.   The optical connector assembling tool according to any one of claims 1 to 2, wherein the wedge releasing portion is formed with an improper pressing prevention wall around the knob to make it difficult to operate the knob.

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