JP2012018284A - Ferrule attachment / detachment jig for optical connectors - Google Patents

Abstract

A ferrule attachment / detachment jig for an optical connector capable of remarkably improving workability when attaching / detaching a ferrule from an optical connector having a detachable ferrule.
An optical connector ferrule attaching / detaching jig used for attaching / detaching a ferrule from an optical connector has a connector housing portion into which the optical connector can be inserted, and the optical connector is inserted into the connector housing portion. A pedestal where the tip of the slider comes into contact with the peripheral edge of the opening end of the connector housing portion is disposed opposite to the pedestal with the connector housing portion sandwiched therebetween. It is configured to include a pair of pins that move and are inserted into the through-holes of the slider and release the locked state of the housing and the stopper in the optical connector.
[Selection] Figure 6

Description

  The present invention relates to a ferrule attachment / detachment jig for an optical connector used when an end of an optical fiber cord is fixed to a ferrule, and the ferrule is attached to or detached from an optical connector in which the ferrule is attached to a housing.

  2. Description of the Related Art Conventionally, an optical fiber connector (hereinafter referred to as an optical connector) that can be easily connected and disconnected in an optical fiber input / output unit such as an optical transmission device has been developed and put into practical use. For example, an optical connector (so-called MPO connector) that includes an MT ferrule that holds and fixes a multi-core optical fiber and is attachable to and detachable from an optical adapter by a slide lock mechanism is known (for example, Non-Patent Document 1). . The optical connectors attached to the optical adapter are aligned by inserting guide pins provided on one ferrule end face into guide pin holes provided on the other ferrule end face.

A typical optical connector has a configuration shown in FIG. 1, for example. FIG. 1 shows a male MPO connector having a guide pin 13 on the distal end surface 12 b of the ferrule 12.
When assembling the optical connector 1 shown in FIG. 1, first, the ferrule 12 with the optical fiber cord 21 is inserted into the ferrule mounting portion 11 f of the cylindrical housing 11. Next, the coil spring 15 disposed on the rear side of the ferrule 12 is pressed by the stopper 16, and the collar portion 12 a of the ferrule 12 is brought into contact with the step portion 11 a of the housing 11. After the locking piece 16 b of the stopper 16 is locked in the locking hole 11 c of the housing 11, the stopper 16 is fixed to the optical fiber cord 21 by the caulking member 19. Thereby, the ferrule 12 is mounted in a state of being biased with respect to the housing 11.

  Here, if the distal end surface 12b of the ferrule 12 (particularly the optical connection portion where the end face of the optical fiber is disposed) is damaged, transmission loss increases during optical connection. It is mounted on the housing 11 in a polished state. However, after assembling the optical connector 1, scratches on the tip surface 12 b of the ferrule 12 may be found. In this case, the optical connector 1 cannot be used as it is.

  Therefore, in recent years, as shown in FIG. 1, the housing 11 and the stopper 16 can be easily released (so-called removable optical connector), the ferrule 12 is once removed from the housing 11, and the distal end surface 12b is removed. It can be remounted after being polished again. In the optical connector 1 shown in FIG. 1, the slider 18 is moved backward (right side in FIG. 1) until the through hole 18a of the slider 18 matches the locking hole 11c of the housing 11, and the pin is inserted into the through hole 18a. Etc. and the locking piece 16b of the stopper 16 is pressed to release the locking state of the locking piece 16b and the locking hole 11c, and the ferrule 12 and the like can be detached from the housing 11.

Japanese Industrial Standards JIS C 5982

  When the ferrule 12 is detached from the optical connector 1 described above, the operator performs alignment so that the through-hole 18a of the slider 18 and the locking hole 11c of the housing 11 coincide. However, since the slider 18 is urged by the spring 17, the aligned state becomes very unstable. In other words, skill is required for the operation of releasing the locked state by inserting pins or the like into the through holes 18a provided on both sides of the slider 18 while maintaining this state.

  The present invention has been made to solve the above-described problems, and provides a ferrule attachment / detachment jig for an optical connector that can remarkably improve workability when attaching / detaching a ferrule from an optical connector having a detachable ferrule. Objective.

The invention according to claim 1 is a ferrule that holds and fixes one end of an optical fiber cord;
A cylindrical housing for mounting the ferrule;
A coil spring for biasing the ferrule to the housing with a predetermined pressing force;
A stopper that holds the coil spring pressed against the ferrule by being locked to the housing;
An optical connector comprising a slider having a through hole that is slidably disposed on the outer periphery of the housing and that allows the housing and the stopper to be released from the outside while being slid with respect to the housing. An optical connector ferrule detachment jig used when detaching the ferrule from
A pedestal having a connector housing part into which the optical connector can be inserted, and a front end of the slider abutting against a peripheral edge of the open end of the connector housing part when the optical connector is inserted into the connector housing part;
The housing and the stopper are disposed on the pedestal so as to face each other with the connector accommodating portion interposed therebetween, and when the tip of the slider contacts the peripheral edge of the opening end, the slider moves in the axial direction and is inserted into the through hole. And a pair of pins for releasing the locked state.

  According to a second aspect of the present invention, in the optical connector ferrule attaching / detaching jig according to the first aspect, the tip of the pin is chamfered.

  The invention according to claim 3 is characterized in that, in the ferrule attachment / detachment jig for optical connector according to claim 1 or 2, the ferrule end face of the optical connector inserted into the connector housing portion is not in contact. To do.

  According to a fourth aspect of the present invention, in the optical connector ferrule attachment / detachment jig according to any one of the first to third aspects, the bottom of the connector housing portion is provided via an elastic member, and the pair is always provided. When the movement of the pin in the axial direction is restricted and the pin is moved against the elastic force of the elastic member as the optical connector is inserted, the locked state of the housing and the stopper can be released. A pin movement restricting member that enables movement of the pin in the axial direction is provided.

  According to a fifth aspect of the present invention, in the optical connector ferrule attachment / detachment jig according to any one of the first to fourth aspects, the connector housing portion engages with the housing of the inserted optical connector. And a connector holding portion for holding the optical connector.

  According to the present invention, an optical connector having a detachable ferrule is stably held in the connector housing portion, and the pin can be easily inserted into the through hole provided in the slider only by moving the pin in the axial direction. be able to. Therefore, the workability when the ferrule is detached from the optical connector is remarkably improved.

It is sectional drawing which shows the principal part structure of the optical connector by which a ferrule is attached or detached by the ferrule attachment / detachment jig for optical connectors which concerns on this invention. 2A is a plan view of the optical connector of FIG. 1 and FIG. It is a side view which shows schematic structure of the ferrule attachment / detachment jig for optical connectors which concerns on 1st Embodiment. It is a top view of the base which comprises the ferrule removal | desorption jig | tool for optical connectors of 1st Embodiment. It is AA sectional drawing of FIG. It is a figure which shows the process of attaching / detaching a ferrule etc. from an optical connector using the ferrule attachment / detachment jig for optical connectors of 1st Embodiment. It is a side view which shows schematic structure of the ferrule attachment / detachment jig | tool for optical connectors which concerns on 2nd Embodiment. It is a top view of the base which comprises the ferrule attachment / detachment jig for optical connectors of 2nd Embodiment. It is AA sectional drawing of FIG. It is a figure which shows the process of attaching / detaching a ferrule etc. from an optical connector using the ferrule attachment / detachment jig for optical connectors of 2nd Embodiment. It is a figure which shows the modification of a pin movement control member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing the main configuration of an optical connector in which a ferrule is attached / detached by an optical connector ferrule attaching / detaching jig according to the present invention. FIG. 2 is a plan view (a) and a side view (b) of the optical connector of FIG. The optical connector 1 is a male MPO connector conforming to, for example, JIS C 5962 standard, and is connected to a female MPO connector via an optical adapter, for example.

As shown in FIGS. 1 and 2, the optical connector 1 includes a housing 11, a ferrule 12, a guide pin 13, a spacer 14, a coil spring 15, a stopper 16, a spring 17, a slider 18, a caulking member 19, a protective boot 20, and a light. A fiber cord 21 is provided.
The housing 11 is made of synthetic resin or the like and accommodates the ferrule 12 or the like inside. The housing 11 is formed in a cylindrical shape having a substantially rectangular cross section. The front inner peripheral surface of the housing 11 is formed corresponding to the outer shape of the ferrule 12, and has a step portion 11 a that contacts the flange portion 12 a of the ferrule 12. The front side of the step portion 11a is a ferrule mounting portion 11f on which the ferrule 12 is mounted.
A locking portion 11 b that locks a locking piece formed on the optical adapter is formed on the outer peripheral surface of the middle portion of the housing 11. A locking hole 11c for locking the locking piece 16b of the stopper 16 is formed on the inner surface of both rear side portions of the housing 11, and a recess 11d for receiving the spring 17 is formed on the outer surface.

The ferrule 12 is a ferrule for a multi-fiber connector called a so-called MT ferrule. The ferrule 12 is made of a synthetic resin or the like, and holds and fixes the distal end portion of an optical fiber cord 21 formed of an optical fiber tape core wire in which a plurality of optical fibers are arranged in parallel and covered together. The optical fiber cord 21 is positioned and fixed with high accuracy in the ferrule 12 so that the individual optical fibers constituting the optical fiber cord 21 are exposed from the front end surface (joint end surface) 12b of the ferrule 12.
The outer shape of the ferrule 12 is a shape that can be fitted to the ferrule mounting portion 11 f of the housing 11. That is, a flange portion 12 a is formed at the rear portion of the ferrule 12, and when the flange portion 12 a abuts on the stepped portion 11 a of the housing 11, the forward movement of the ferrule 12 is restricted.

  When the ferrule 12 is mounted on the housing 11, the front end surface 12 b of the ferrule 12 protrudes from the front opening end of the housing 11. A through hole 12c is formed on both sides of the ferrule 12, and a guide pin 13 is press-fitted into the through hole 12c. The guide pin 13 is made of, for example, stainless steel, and is inserted into a guide pin hole formed in a connection partner (female MPO connector). Thereby, the optical connector 1 and the connection partner are connected in a state of being positioned with high accuracy.

  A coil spring 15 is disposed on the rear end side of the ferrule 12 via a spacer 14. The spacer 14 prevents the guide pin 13 press-fitted into the through hole 12 c from falling off and transmits the urging force of the coil spring 15 to the ferrule 12. The coil spring 15 urges the ferrule 12 through the spacer 14 with a constant pressing force.

  A stopper 16 is disposed on the rear end side of the coil spring 15. The stopper 16 is made of a synthetic resin or the like, and has a main body portion 16 a that holds the coil spring 15 and a locking piece 16 b that is locked to the locking hole 11 c of the housing 11. After inserting the ferrule 12, the spacer 14 and the coil spring 15 into the housing 11, the stopper 16 is inserted and the coil spring 15 is compressed and moved forward (to the ferrule 12 side), and the locking piece 16b is inserted into the locking hole 11c. By being locked, the ferrule 12 is attached to the housing 11 in a state of being urged with a constant pressing force.

  A caulking member 19 is disposed on the outer peripheral surface of the main body 16 a of the stopper 16, and the caulking member 19 is caulked to firmly fix the stopper 16 to the optical fiber cord 21. Further, a protective boot 20 is fitted and bonded in the gap between the housing 11 and the stopper 16 (caulking member 19).

  A spring 17 is disposed in the recess 11 d of the housing 11, and a slider 18 is slidably disposed on the outside thereof to constitute a so-called slide lock structure. The slider 18 is always biased forward by the spring 17 and can move backward while resisting the biasing force. By moving the slider 18 rearward, the locked state with the optical adapter locked to the locking portion 11b of the housing 11 can be released, and by pulling the optical connector 1 further rearward, the optical connector is disconnected from the optical connector. 1 can be easily detached.

  A through hole 18 a is formed in the front portion of the slider 18. With the slider 18 moved backward until the position in the front-rear direction of the through hole 18a coincides with the position in the front-rear direction of the locking hole 11c of the housing 11, a pin or the like is inserted into the through-hole 18a to lock the stopper 16. By pressing the piece 16b, the locked state of the locking piece 16b and the locking hole 11c is released, and the ferrule 12 and the like can be detached from the housing 11.

  As described above, the optical connector 1 has a ferrule 12 that holds and fixes one end of the optical fiber cord 21, a cylindrical housing 11 on which the ferrule 12 is mounted, and the ferrule 12 is biased to the housing 11 with a predetermined pressing force. A coil spring 15, a stopper 16 that holds the coil spring 15 pressed against the ferrule 12 by being locked to the housing 11, and a slide that is slidably disposed on the outer periphery of the housing 11. And a slider 18 having a through hole 18a that can release the locked state from the outside.

  The ferrule attachment / detachment jig for optical connectors (ferrule attachment / detachment jig) of the present invention is used when attaching / detaching the ferrule 12 and the like from the optical connector 1 once assembled. That is, the optical connector 1 is held in a stable state and the locked state between the stopper 16 and the housing 11 is released with one touch.

[First Embodiment]
FIG. 3 is a side view showing a schematic configuration of the ferrule attachment / detachment jig 100 for an optical connector according to the first embodiment. In FIG. 3, a part is shown by a cutaway section. FIG. 4 is a top view of the pedestal 110 constituting the ferrule attachment / detachment jig 100 for an optical connector, and FIG.
As shown in FIGS. 3 to 5, the optical connector ferrule attachment / detachment jig 100 includes a pedestal 110 that holds the optical connector 1 and a pin 120 that is inserted into the through hole 18 a of the slider 18.

The pedestal 110 is made of a synthetic resin (for example, polyacetal (POM)) or the like, and has substantially the same shape as the outer shape of the housing 11 of the optical connector 1, that is, an opening larger than the outer shape of the housing 11 and smaller than the outer shape of the slider 18 ( A connector housing portion 112) is formed penetrating downward from the upper surface.
Since the lower part of the connector accommodating part 112 is open | released, when the optical connector 1 is inserted, the front end surface 12b of the ferrule 12 will be non-contact with any member. Thereby, it is possible to prevent the tip surface (in particular, the optical connection portion on which the optical fiber end surface is disposed) 12b of the ferrule 12 from being damaged during the work of disassembling the optical connector 1.
Further, on the bottom surface of the pedestal 110, leg portions 114 are provided on both sides of the connector housing portion 112 (lower opening 112b) so that the lower opening 112b of the connector housing portion 112 is separated from the installation surface by a predetermined length. It has become. Thereby, at the time of the disassembly work of the optical connector 1, it can prevent that the front-end | tip surface of the ferrule 12 contacts the installation surface, and the front-end | tip surface of the ferrule 12 is damaged.

  On the upper surface of the pedestal 110, pin holding portions 111 that hold the pins 120 movably only in the axial direction are formed on both sides of the connector housing portion 112 (upper opening 112a). The pin holding part 111 has a pin accommodating part 111a that accommodates the pin 120 and the coil spring 130, and a through hole 111b that is connected to the pin accommodating part 111a.

Protruding portions 113 for aligning the positions of the through holes 18 a of the slider 18 and the pins 120 are formed on the front and rear sides of the connector housing portion 112. Note that when the optical connector 1 is inserted into the connector housing portion 112, the position of the through hole 18a or the position of the pin 120 is sufficient as long as the positions of the through hole 18a of the slider 18 and the tip 121 of the pin 120 coincide. If the installation location is adjusted, the upper surface of the pedestal 110 may be flat.
When the optical connector 1 is inserted into the connector housing portion 112, the tip of the slider 18 comes into contact with the peripheral edge of the upper opening 112 a of the connector housing portion 112, that is, the convex portion 113, and when the optical connector 1 is further pushed in, the slider 18 moves relatively rearward (the through hole 18a of the slider 18 approaches the engaging portion between the housing 11 and the stopper 16).

  The pin 120 is a cantilever pin whose diameter is reduced stepwise, and is made of, for example, stainless steel in order to press the locking piece 16b of the stopper 16 to be elastically deformed. The outer diameter of the body portion 122 of the pin 120 is substantially the same as the inner diameter of the through hole 111b of the pin holding portion 111, and the outer diameter of the rear portion 123 is substantially the same as the inner diameter of the pin housing portion 111a. Thereby, since the pin 120 is inserted in the pin accommodating part 111a, it becomes possible to move stably only in the axial direction.

The pin 120 is inserted into the pin accommodating portion 111a with the body portion 122 inserted into the coil spring 130. Specifically, the pin 120 is inserted while compressing the coil spring 130 until part of the pin tip portion 121 and the body portion 122 protrudes from the through hole 111b. Then, by fitting a retaining ring 140 into a concave groove (not shown) formed in the body portion 122, the pin 120 is held in a pin-removable manner by the pin holding portion 111, and a pair of pins 120, 120 are arranged to face each other. Is done.
Here, the pin 120 is moved back in the axial direction so that the pin 120 can be easily restored to the original position (position where the retaining ring 140 contacts the pin holding portion 111). It is desirable that the spring constant of the coil spring 130 is 0.5 N / mm or more so that the pressing force at the time of abutment does not increase more than necessary.

When the locking state of the housing 11 and the stopper 16 in the optical connector 1 is released, the tip portion 121 of the pin 120 is abutted against the locking piece 16 b of the stopper 16. At this time, the tip portion 121 of the pin 120 is chamfered so that the locking piece 16b of the stopper 16 is not damaged.
Further, when the locking state of the housing 11 and the stopper 16 is released, the pin 120 is locked to the pin holding portion 111 at the rear end of the pin 120 so that the pin 120 is not pushed more than necessary. A flange 124 for regulating the movement length is formed.

  As described above, the ferrule attachment / detachment jig 100 for the optical connector according to the first embodiment has the connector housing portion 112 into which the optical connector 1 can be inserted, and the slider when the optical connector 1 is inserted into the connector housing portion 112. 18 is disposed opposite to the pedestal 110 abutting on the peripheral edge (convex portion 113) of the opening end (upper opening 112a) of the connector housing portion 112 with the connector housing portion 112 sandwiched between the pedestal 110 and the front end of the slider 18 And a pair of pins 120 that move in the axial direction and are inserted into the through holes 18a when contacting the peripheral edge of the opening end.

FIG. 6 is a diagram illustrating a process of attaching / detaching the ferrule 12 and the like from the optical connector 1 using the optical connector ferrule attachment / detachment jig 100 of the first embodiment. FIG. 6 shows a half cross section when the optical connector 1 is inserted into the ferrule attachment / detachment jig 100 for optical connectors.
First, as shown in FIG. 6A, the optical connector 1 is inserted into the connector housing portion 112 of the optical connector ferrule attaching / detaching jig 100, and the tip of the slider 18 is brought into contact with the convex portion 113. Since the outer shape of the connector housing portion 112 is substantially the same as the outer shape of the optical connector 1, the optical connector 1 is held in a stable state by the connector housing portion 112.
In this state, the position of the through hole 18a of the slider 18 and the tip 121 of the pin 120 coincide with each other. Therefore, when the pin 120 is moved in the axial direction, the pin 120 is easily inserted into the through hole 18a. However, since the positions of the through holes 18a of the slider 18 and the locking portions L of the housing 11 and the stopper 16 do not coincide with each other, the locked state of the locking portions L cannot be released.

  As shown in FIG. 6B, when the optical connector 1 is pushed in, the slider 18 remains in contact with the convex 113, so that the slider 18 is relatively rearward (upward in FIG. 6) with respect to the housing 11 and the like. It moves, and the through hole 18a of the slider 18 and the locking part L approach. Finally, the positions of the through hole 18a of the slider 18 and the locking portion L coincide with each other, and the locked state can be released. In this state, the pin 120 is inserted from both sides of the optical connector 1 through the through hole 18a, and the locking piece 16b of the stopper 16 is pressed simultaneously, whereby the locking state of the locking portion L is released. The ferrule 12 and the like can be easily detached from the housing 11 by pulling out the optical fiber cord 21 and the like.

As described above, according to the ferrule attachment / detachment jig 100 for an optical connector, the optical connector 1 is stably held in the connector housing portion 112 only by inserting the optical connector 1 into the connector housing portion 112. Further, the pin 120 can be easily inserted into the through hole 18 a provided in the slider 18 only by moving the pin 120 in the axial direction. Therefore, the workability when removing the ferrule 12 and the like from the optical connector 1 is significantly improved.
Further, in the optical connector ferrule attaching / detaching jig 100, since the optical connector 1 is merely inserted into and removed from the connector housing portion 112, there is no problem of durability, and the structure of the jig itself is simple and can be manufactured at low cost. it can.

[Second Embodiment]
FIG. 7 is a side view showing a schematic configuration of an optical connector ferrule attaching / detaching jig 200 according to the second embodiment. In FIG. 7, a part is shown by a cutaway cross section. FIG. 8 is a top view of a pedestal 210 constituting the ferrule attachment / detachment jig 200 for an optical connector, and FIG.
Since the basic configuration of the optical connector ferrule attachment / detachment jig 200 is the same as that of the optical connector ferrule attachment / detachment jig 100 of the first embodiment, a detailed description thereof will be omitted. Components that are the same as or correspond to the components of the optical connector ferrule attaching / detaching jig 100 of the first embodiment are denoted by the reference numerals replaced in the 200s.

That is, the ferrule attachment / detachment jig 200 for an optical connector according to the second embodiment has a connector housing portion 212 into which the optical connector 1 can be inserted, and when the optical connector 1 is inserted into the connector housing portion 212, the slider 18 The front end of the pedestal 210 is in contact with the peripheral edge (convex portion 213) of the opening end (upper opening 212a) of the connector housing portion 212 and the pedestal 210 is opposed to the connector housing portion 212 with the front end of the slider 18 being the open end. And a pair of pins 220 that move in the axial direction and are inserted into the through holes 18a.
As shown in FIGS. 7 to 9, the optical connector ferrule attachment / detachment jig 200 is provided with a pin movement restriction member 260 for restricting the movement of the pins 220 in the axial direction. This is different from the ferrule attaching / detaching jig 100 for use.

The connector housing portion 212 of the base 210 is formed wider than the connector housing portion 112 of the first embodiment in order to dispose the pin movement restricting member 260. Further, a concave portion 215 for accommodating an elastic member (for example, a coil spring or rubber) 250 is formed at the bottom of the connector accommodating portion 212. The elastic member 250 is disposed in the recess 215, and the pin movement restricting member 260 is placed thereon.
Unlike the optical connector ferrule attachment / detachment jig 100 of the first embodiment, the bottom of the connector housing portion 212 is closed, so that dust or the like enters from the bottom of the optical connector ferrule attachment / detachment jig 200 and the ferrule 12 It does not adhere to the tip surface 12b.

  The pin movement restricting member 260 is a U-shaped member made of synthetic resin or the like. The side wall 260 a of the pin movement restricting member 260 is molded so as to move up and down stably along the connector housing portion 212, and the upper end portion of the body portion 222 of the pin 220 is placed on the elastic member 250. It has a height (a height at which the movement of the pin 220 in the axial direction can be restricted) to the extent that it is located at the lower end face.

Further, the bottom wall 260b of the pin movement restricting member 260 is formed with a long and thin accommodation hole 260c that fits with the tip of the ferrule 12 of the optical connector 1, and the guide pin 13 of the optical connector 1 is located at the bottom of the accommodation hole 260c. It comes to hit. Thereby, when the optical connector 1 is inserted in the connector accommodating part 212, it can hold | maintain in the stable state.
When a female MPO connector is used, the tip surface 12b of the ferrule 12 comes into contact with the accommodation hole 260c. At this time, it is desirable that the bottom portion of the accommodation hole 260c is formed in a concave shape so that the optical connection portion of the distal end surface 12b of the ferrule 12 does not contact the pin movement restricting member 260.

FIG. 10 is a diagram showing a process of attaching / detaching the ferrule 12 and the like from the optical connector 1 using the optical connector ferrule attachment / detachment jig 200 of the second embodiment. FIG. 10 shows a half cross section when the optical connector 1 is inserted into the optical connector ferrule attachment / detachment jig 200.
First, as shown in FIG. 10A, the optical connector 1 is inserted into the connector housing portion 212 of the optical connector ferrule attaching / detaching jig 200, and the tip of the slider 18 is brought into contact with the convex portion 213. The outer shape of the connector housing portion 212 is substantially the same as the outer shape of the optical connector 1, and the tip of the ferrule 12 is engaged with the housing hole 260 c of the pin movement restricting member 260, so that the optical connector 1 is stabilized by the connector housing portion 212. Held in.
In this state, the positions of the through hole 18a of the slider 18 and the tip portion 221 of the pin 220 coincide with each other, but the side wall 260a of the pin movement restricting member 260 is in contact with the end surface of the body portion 222 of the pin 220. 220 cannot be moved in the axial direction.

As shown in FIG. 10B, when the optical connector 1 is pushed in, the slider 18 remains in contact with the convex portion 213, so that the slider 18 is relatively rearward (upward in FIG. 10) with respect to the housing 11 and the like. It moves, and the through hole 18a of the slider 18 and the locking part L approach. As the optical connector 1 is inserted, the pin movement restricting member 260 moves downward against the elastic force of the elastic member 250.
Finally, the positions of the through hole 18a of the slider 18 and the locking portion L coincide with each other, and the locked state can be released. At this time, the side wall 260a of the pin movement restricting member 260 is completely detached from the pin 220, and the pin 220 can move in the axial direction. In this state, the pin 220 is inserted from both sides of the optical connector 1 through the through hole 18a, and the locking piece 16b of the stopper 16 is pressed simultaneously, whereby the locking state of the locking portion L is released. The ferrule 12 and the like can be easily detached from the housing 11 by pulling out the optical fiber cord 21 and the like.

  As the optical connector 1 is pushed in, the side wall 260a of the pin movement restricting member 260 is detached from the end surface of the body portion 222 of the pin 220, but the retaining ring 240 is moved when the pin 220 is slightly moved in the axial direction. Therefore, the movement of the pin 220 is still restricted.

  As described above, the pin movement restricting member 260 is provided at the bottom of the connector housing portion 212 via the elastic member 250 and normally restricts the movement of the pair of pins 220 in the axial direction and inserts the optical connector 1. Accordingly, the pin 220 is moved against the elastic force of the elastic member 250, and the pin 220 can be moved in the axial direction when the locked state of the housing 11 and the stopper 16 can be released.

According to the optical connector ferrule attachment / detachment jig 200, the optical connector 1 is stably held in the connector housing portion 212 only by inserting the optical connector 1 into the connector housing portion 212. Further, the pin 220 can be easily inserted into the through hole 18a provided in the slider 18 only by moving the pin 220 in the axial direction. Therefore, the workability when removing the ferrule 12 and the like from the optical connector 1 is significantly improved.
Further, in the optical connector ferrule attachment / detachment jig 200, since the optical connector 1 is simply inserted into and removed from the connector housing 212, there is no problem of durability, and the structure of the jig itself is simple, so that it can be manufactured at low cost. it can.
Furthermore, since the pin movement restricting member 260 is provided, there is no possibility that the pin 220 is accidentally pressed before the locking state of the locking portion L can be released and the housing 11 is damaged.

  As mentioned above, although the invention made by this inventor was concretely demonstrated based on embodiment, this invention is not limited to the said embodiment, It can change in the range which does not deviate from the summary.

  For example, since the optical connector 1 is formed with a locking portion 11b for locking a locking piece formed on the optical adapter, a connector holding portion for holding the optical connector 1 by engaging with the locking portion 11b. (So-called latch mechanism) may be provided in the connector housing portions 112 and 212. If the optical connector 1 is fixed at a position where the latching portion L between the housing 11 and the stopper 16 can be released by this latch mechanism, the optical connector 1 is inserted into the connector housing portions 112 and 212 until it is fixed. Therefore, the work of disassembling the optical connector 1 is further facilitated.

  Further, in the optical connector ferrule attachment / detachment jig 200, when the pin 220 is repeatedly erroneously operated while the movement of the pin 220 in the axial direction is restricted by the pin movement restriction member 260, the pin movement restriction member 260 is pressed. Therefore, there is a risk of deformation inclining inward. Therefore, it is desirable that the pin movement restricting member 260 has a structure that is rigid enough not to be deformed by the pressing force from the pin 220. For example, as shown in FIG. 11, the side wall 260a of the pin movement restriction member 260 is structured to be thicker toward the lower side, so that deformation due to the pressing force from the pin 220 can be effectively prevented. .

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Optical connector 11 Housing 11a Step part 11b Locking part 11c Locking hole 11d Recessed part 11f Ferrule mounting part 12 Ferrule 12a Collar part 12b End surface 12c Through hole 13 Guide pin 14 Spacer 15 Coil spring 16 Stopper 16a Main part 16b Locking piece 17 Spring 18 Slider 19 Caulking member 20 Protective boot 100 Ferrule attachment / detachment jig for optical connector 110 Base 111 Pin holding portion 112 Connector housing portion 112a Upper opening 112b Lower opening 113 Protrusion (periphery of the opening end of the connector housing portion)
114 Leg 120 Pin 121 Tip 122 Body 123 Rear 124 Flange

Claims (5)

A ferrule that holds and fixes one end of the optical fiber cord;
A cylindrical housing for mounting the ferrule;
A coil spring for biasing the ferrule to the housing with a predetermined pressing force;
A stopper that holds the coil spring pressed against the ferrule by being locked to the housing;
An optical connector comprising a slider having a through hole that is slidably disposed on the outer periphery of the housing and that allows the housing and the stopper to be released from the outside while being slid with respect to the housing. An optical connector ferrule detachment jig used when detaching the ferrule from
A pedestal having a connector housing part into which the optical connector can be inserted, and a front end of the slider abutting against a peripheral edge of the open end of the connector housing part when the optical connector is inserted into the connector housing part;
The housing and the stopper are disposed on the pedestal so as to face each other with the connector accommodating portion interposed therebetween, and when the tip of the slider contacts the peripheral edge of the opening end, the slider moves in the axial direction and is inserted into the through hole. And a pair of pins for releasing the locked state of the ferrule attachment / detachment jig for optical connectors.   2. The ferrule attachment / detachment jig for an optical connector according to claim 1, wherein the tip of the pin is chamfered.   The ferrule attachment / detachment jig for an optical connector according to claim 1 or 2, wherein the ferrule end face of the optical connector inserted into the connector housing portion is not in contact.   Provided via an elastic member at the bottom of the connector housing, and normally restricts movement of the pair of pins in the axial direction and moves against the elastic force of the elastic member as the optical connector is inserted. 4. A pin movement restricting member that enables movement of the pin in the axial direction when the locked state of the housing and the stopper can be released. The ferrule attachment / detachment jig for optical connectors according to one item.   5. The light according to claim 1, wherein the connector housing portion has a connector holding portion that holds the optical connector by engaging with the housing of the inserted optical connector. 6. Ferrule removal tool for connectors.

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