JP3192532B2 - Sleeve holder insertion / extraction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called plug-in type optical connector of a so-called plug-in type for device mounting, which is plugged into a device.

[0002]

2. Description of the Related Art In an optical connector, dust is sometimes adhered to the end face of the optical connector by repeatedly inserting and removing the ferrule. Therefore, the end face of the ferrule must be cleaned as necessary. Also, sometimes it is necessary to replace the sleeve holder. In any case, it is necessary to insert and remove the sleeve holder from the housing.

Conventionally, a tweezer-like tool has been used to insert and remove the sleeve holder from the housing.

[0004]

However, the conventional tools have the following disadvantages. Since the sleeve holder is manually inserted and removed, it is difficult to insert the sleeve holder straight. When the sleeve holder is inserted in an inclined state, only one of the pair of locking pieces of the housing expands. In addition, other non-spreading locking pieces may be damaged by receiving the pressing force at the time of insertion. In the case of a so-called double-type optical connector in which two plugs are inserted and held in the housing in an adjacent state,
Each of the sleeve holders must be separately inserted and removed, so that two operations are required, resulting in poor work efficiency. Since it does not have a function of holding the sleeve holder, it easily falls from the tool after being extracted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional tool. In a dual optical connector, two sleeve holders can be reliably and efficiently operated by two consecutive operations. An object of the present invention is to provide a sleeve holder insertion / extraction tool which can be extracted or inserted.

[0006]

In order to achieve the above object, a sleeve holder insertion / extraction tool according to the present invention is provided in a double-type housing in which two plugs and a sleeve holder are respectively mounted adjacently so as to be freely inserted and extracted. A rectangular cylindrical external holder whose tip is inserted and removed so that it can be inserted and removed, and a spring force slidable in the front-rear direction and rearward in the external holder so as to correspond to the plugs and sleeve holders. A pair of first,
A sleeve holder push-out pin which is provided inside the sleeve holder insertion hole slidably in the front-rear direction and biased forward by a spring force; 4 for projecting the sleeve holder locking portion of the housing, which protrudes forward from the four corners at the front end and has an outer surface formed as an inclined surface.
An internal holder having a plurality of operating claws and a pair of leaf springs each having an inwardly curved sleeve holder locking claw at its tip and fixed to the upper and lower sides so as to be openable and closable, can be slid in the front-rear direction. And the first and second operating bodies are alternately pressed, whereby each of the operating claws expands the sleeve holder locking portion, and at the same time, the leaf spring is closed against the spring force. In this way, the engagement flanges of the sleeve holder are sandwiched between the engagement members. On the other hand, concave grooves are formed on the upper surfaces of the two working bodies at opposing corners, and the front ends of the concave grooves are formed. On the other hand, a substantially rectangular right-angled triangular concave portion gradually enlarged in the left and right directions from the rear end to the front end is provided in opposition to each other, and a connecting portion of the biconcave groove and the concave portion on the inner surface of the external holder is provided. At the opposing position, a flat triangular pendulum with its narrow end as a fulcrum First formed by disposing and furnished to reciprocally rotatably and the both concave portions in the lateral direction, is characterized in that a co-insertion preventing mechanism of the second operating body.

[0007]

[Effect] Two plugs in which ferrules are incorporated and two sleeve holders are inserted and held side by side in a left and right state. Then, it is locked by a clamp provided on the holder.

When the first operating member of the pair of operating members slidably held by the external holder is pressed forward, the first operating member slides forward against the spring force, and the internal holder inside is also integrated with the first operating member. Forwardly, the tip of the sleeve holder is inserted into an insertion hole formed in the center of the sleeve holder, and the end of the sleeve holder strikes the end face of the push pin in the insertion hole, and the pin is retracted against the spring force.

The four operating claws projecting from the tip of the internal holder are:
A sleeve holder locking portion of the housing is protruded,
By being pushed into the inside of both claw plates provided at the center and outside, both claw plates are symmetrically pressed and deformed outward against the spring property by the outer inclined surface. As a result, the sleeve holder locking portion is pushed and expanded.

On the other hand, the tips (locking claw portions) of a pair of upper and lower leaf springs are inserted between the upper and lower claw plates to both upper and lower sides of the sleeve holder. At this time, the small diameter shaft portion of the stopper pin is inserted into the small diameter hole portion of the lock hole in the operating body.

When the first operating body is further pushed forward, the inner holder is stopped without advancing because the front end of the first operating body is pressed against the front engaging flange provided on the outer periphery of the sleeve holder. Only one operating body moves forward, and the pair of leaf springs is elastically deformed inward against the spring force by the opening edge of the tip, and the locking claw at the tip is inserted between the two engaging flanges on the outer periphery of the sleeve holder. And the three
Hold the holder from both upper and lower sides. The large diameter portion of the lock hole is moved to the position of the stopper pin by the advance of only the first operating body, so that the large diameter shaft portion of the stopper pin which is biased upward by the spring force is connected to the large diameter hole portion. Fit.

Next, when the pressing of the first operating body is released, the first operating body is retracted by the spring force together with the internal holder, and the sleeve holder is removed from the housing by the locking claw of the leaf spring. When the sleeve holder is inserted into the insertion hole of the inner holder, the sleeve holder is clamped by the locking claws of the pair of leaf springs. Therefore, when the sleeve holder is removed from the housing or after the sleeve holder is removed. It can be held without falling.

After the sleeve holder is removed, the housing and the tool can be separated by rotating the clamp, and the end face of the ferrule incorporated in the plug can be cleaned.

After the ferrule cleaning, the housing and the
When the tool is fixed by the clamp, when the slider on the upper surface of the external holder is slid toward the first operating body, the locking portion protruding from the rear surface rides on the upper end of the stopper pin, thereby applying a spring force to the stopper pin. Press down against As a result, the large-diameter shaft portion of the stopper pin escapes from the large-diameter hole portion of the lock hole and the small-diameter shaft portion is inserted at the same time, so that the spring force is urged forward with respect to the first operating body. The internal holder moves forward, the small-diameter shaft portion is inserted into the small-diameter hole portion of the lock hole, and the internal holder stops at a position where it abuts the front end edge of the small-diameter hole portion.

With the advancement of the inner holder with respect to the first working body,
When the pressing of the pair of leaf springs by the opening edges of the front ends is released, the leaf springs elastically return outward and symmetrically, releasing the holding of the sleeve holder by the locking claws and simultaneously pushing the pushing pin by the spring force. The sleeve holder is pushed forward and pushes the sleeve holder slightly forward.

When the first operating body is pressed forward against the spring force, the first operating body moves forward with the internal holder, and the center and outer claw plates of the housing are elastically outwardly moved outward by the four operating claws at the tip. The sleeve is deformed to expand the sleeve holder locking portion, and at the same time, the front end of the internal holder presses the engaging flange in front of the sleeve holder. As a result, the sleeve holder is pushed into the housing. Next, when the pressing of the first operating body is released, the operating body is retracted and returned by the spring force together with the internal holder, so that the engagement of the housing is performed. The part also returns to its original position, and is engaged between the flanges of the sleeve holder, so that the sleeve holder is inserted and held in the housing in a state of being externally fitted to the ferrule of the plug.

After inserting the sleeve holder, the housing and the tool are separated. Removal and insertion of the other sleeve holder can be performed by the same operation procedure as when the second operating body is the first operating body. Since the present invention is equipped with a mechanism for preventing simultaneous insertion of the first and second operating bodies, when one of the operating bodies is pushed and inserted, the other operating body is prevented from being pushed and inserted. That is, when one operating body is pushed into the external holder and inserted, the pendulum having a substantially triangular plane rotates into the other recess by the inclined surface of one recess, and the operating body is further pushed and inserted.
The pendulum is pressed into the side surface of one of the grooves and fits into the groove and the recess. This prevents the insertion of one of the actuators into the outer holder, while preventing the insertion of the other actuator, and the actuator is retracted back to a position based on one of the actuators. Otherwise, it cannot be pushed and inserted into the external holder.

[0018]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view in which the tool is fixed to a double housing, and FIG. 2 is a plan view in which the cover plate is removed from the main body in a state in which the tool is fixed to the double housing.

As shown in FIGS. 1 and 2, a rectangular cylindrical external holder 1, a pair of two rectangular cylindrical first and second operating bodies 2, 3 and a pair of square The column-shaped internal holders 4 and 5 are configured as main members.

The external holder 1 is formed by fixing a plate-like lid 1b to the upper surface of a holder main body 1a which is recessed by penetrating the groove 6 in the front-rear direction, as shown in FIG. It is formed hollow.

At the end of the lid 1b projecting forward from the end of the holder main body 1a, a clamp 9 for inserting and externally fixing the external holder 1 in a double housing 8 is provided. .

The clamp 9 has a rotating shaft 11 rotatably inserted into a shaft hole 10 formed vertically through the lid 1b.
A rotary knob 12 extending upward from a shaft hole 10 of the rotary shaft 11 and fixed to an extended portion thereof; and a washer 13 laid on the upper surface of the lid 1b and interposed between the knob 12 and a rotary shaft. 1
A compression spring 14 for urging the housing 1 upward, and a holding block 15 for the housing 8 rotatably supported at the lower end of the rotating shaft 11.
A recess 17 which is recessed downward on the outer periphery of the shaft hole 10 and has a cam surface 16 inclined in the circumferential direction on the lower surface of the top wall;
A projection 18 projecting upward from the lower end of the rotary shaft 11 and elastically contacting the cam surface 16 by the spring force of the compression spring 14;
Is rotated forward and backward by a predetermined angle (90 °), so that the presser block 15 comes out of the concave hole 17 and sinks to engage or disengage with the step 8a formed on the upper surface of the housing 8. Thereby, the external holder 1 is fixed to the housing 8 or the fixing is released.

The above-mentioned pair of first and second operating bodies 2, 3
The front and rear directions in the adjacent state (FIG.
The spring receivers 2a, 3a are provided so as to be slidable in the left-right direction and symmetrically protruded from the side surfaces.
Each of the spring holders 2 is slidably mounted in recesses 1 c and 1 d which are long and recessed in the front-rear direction on the inner surfaces of the left and right sides of the outer holder 1.
Each of the operating bodies 2 and 3 is constantly urged rearward by compression springs 19 and 20 which are provided in the recesses 1c and 1d with one ends abutting on the a and 3a.

The pair of internal holders 4 and 5 correspond to FIGS.
As shown in the figure, the insertion hole 2 of the sleeve holder 31 is located at the center.
2 is formed to penetrate the insertion hole 22 in the front-rear direction.
And a spring receiver 25 screwed into a screw hole 22a formed on the rear side of the insertion hole 22 so that the push-out pin 24 of the sleeve holder 31 can be slid in the front-rear direction. A compression spring 26 is interposed therebetween to urge the interior forward.

A step 22 is provided near the tip of the insertion hole 22.
The sleeve b is provided so that the push pin 24 comes into contact therewith so that the sleeve holder 31 can be pushed out by a certain length.

As shown in FIG. 3, the pair of inner holders 4 and 5 are provided at the four corners at the distal ends thereof at the sleeve holder locking portions 28a, 28b, 29a and 3a of the housing 8 shown in FIG.
The four operating claws 27, 27, 27, 27 for expanding the Oa are formed to protrude forward as shown in FIG.

The locking portions 28a, 28b, 29a, 30
FIG. 4A shows a central claw plate 28 provided in the housing 8 and having a spring property, as clearly shown in FIG.
And outer nail plates 29, 3 having a predetermined interval in the left-right direction.
0, each of which protrudes from the center of the tip.
a, 29a and 28b, 30a, as shown in FIGS. 1 and 2, two engagement flanges 31a, 31b on the outer periphery.
Are configured to engage and hold sleeve holders 31, 31 projecting at predetermined intervals in the axial direction.

As described above, in the double housing 8, the central claw plate 28 is connected to the two sleeve holders 31, 31.
And two sleeve holders 3
It is not possible to insert or remove 1, 31 at the same time.

Therefore, in the tool of the present invention, the two operating bodies 2, 3 and the inner holders 4, 5 are provided inside the outer holder 1 so that the two sleeve holders 31, 31 can be inserted and removed separately. It is configured.

The four operating claws 27...
In the above, the central claw plate 28 and the outer claw plate 29
Or 30 inside and its locking portions 28a, 29a
And spaces a, a, a on both sides of 28b, 30a
b, b and c, c, d, and d, and are formed so as to be pushed into the respective spaces a, a, b, b, and c.
c, d, and d, the claw plates 28 and 29 and 28 and 30 are pressed and deformed to the outside so that the locking portions 28a,
9a and 28b and 30a can be expanded so that the operating claws 27
, As shown in FIG. 3, the inclined surface 27a.
・ It is formed in

In this embodiment, the above-mentioned operating claws 27... Are attached to the tips of the internal holders 4 and 5 by fixing the separate members 32 to the screws 33. 23 is prevented, the internal holders 4, 5 and the operating claws 27 are also integrally formed. In this case, an annular plate ( (Not shown) or the like is fixed to prevent the retaining ring 23 from falling off.

Further, as shown in FIGS. 1 and 3, sleeve holder locking claws 34a are bent inward at both ends of the upper and lower sides of the internal holders 4 and 5, and the inner holders 4 and 5 are provided with the same. A pair of leaf springs 34, 34 having opening and closing curved protrusions 34b outwardly bent in a substantially U-shape at the rear portion, and their locking claws 34a, 34a are positioned at the tips of the internal holders 4, 5. Then, the base end is fixed with a screw 35 so as to be freely opened and closed.

A guide rod 36 is screwed into a screw hole 22a at the rear end of the insertion hole 22 in the internal holders 4, 5 to protrude rearward. A stopper pin 38 is provided in a pin hole 37 formed to penetrate in the vertical direction so as to be slidable in the vertical direction.

As shown in FIGS. 1 and 2, the above-mentioned operating bodies 2, 3 are integrally formed by coaxially fitting the front members 2b, 3b and the rear members 2c, 3c. Both members 2
After the pair of internal holders 4 and 5 are inserted from the rear into the front members 2b and 3b in a state where the stopper pins 38 are detached in a state where b, 2c and 3b and 3c are separated, and The two rear members 2b, 2c and 3b, 3c are fitted and fixed, and the above-described guide rod 36 is connected to the rear members 2c, 3c.
The internal holders 4 and 5 are slidable in the front and rear directions on the operating bodies 2 and 3 by inserting the compression holders 40 into the guide holes 39 formed through the front and rear directions at the center of the guide holes 39. 40, and the locking claws 27,..., And the leaf springs 34, 34 are projected forward from the distal end openings 21 of the operating bodies 2, 3, so that the operating claws 27,. When the internal holders 4 and 5 slide in the front-rear direction, the tips of the pair of leaf springs 34 and 34
It is opened and closed by the opening edge of.

After the internal holders 4 and 5 are assembled in the operating bodies 2 and 3 as described above, the above-mentioned stopper pins 38 are inserted from the openings 41 formed in the operating bodies 2 and 3 and the pin holes are formed. 37.

As shown in FIG. 1, the stopper pin 38 has a large-diameter shaft portion 38a at the upper end and a small-diameter shaft portion 38b
And are integrally formed. On the other hand, the pin hole 37
The upper part is formed with a small diameter and the lower part is formed with a large diameter, the stopper pin 38 is inserted so as not to escape upward, and the lower end of the pin hole 37 is formed in a screw hole 37a.
A compression spring 4 interposed between a spring receiver 42 screwed onto the compression spring 4
3 pushes upward.

Further, as shown in FIG. 2, the small diameter hole portion 44a and the large diameter hole portion 44
The lock holes 44 are formed so as to penetrate the lock holes 44 in the up-down direction while communicating with b in the front and rear arrangement. The lock hole 44 has a large diameter hole portion 44b.
The diameter of the large diameter shaft portion 38a of the stopper pin 38 is set to a size that can be inserted, and the small diameter hole portion 44a is set to a size that the small diameter shaft portion 38b of the stopper pin 38 can be inserted.

As shown in FIGS. 1 and 5, a slider 45 is slidable in the left and right direction on the rear upper surface of the external holder 1 at a position corresponding to the pair of stopper pins 38, 38. Screws 46 on the upper surface of the external holder 1
-It is supported and arranged by a pair of guide members 47, 47 which are stopped before and after.

The slider 45 is provided in an opening 48 provided on the upper surface of the external holder 1, and has a stopper pin pressed down on the back surface as shown in FIGS. 5 and 9A to 9 C. Locking portion 49 is projected.

When the slider 45 is slid in the left-right direction, the locking portion 49 is brought into contact with the pair of stopper pins 3.
The stopper pins 3 engage with the upper ends of the stopper pins 8 and 38 alternately.
8 and 38 are pushed down, and as shown in FIG.
The small-diameter shaft portion 3 of the stopper pin 38 whose large-diameter shaft portion 38a is fitted into the large-diameter hole portion 44b of the lock hole 44 and pushed up.
The slider 45 functions in order to insert 8b into the small hole portion 44a of the lock hole 44.

Further, as shown in FIG. 5, the slider 45 is fixed to a pair of stopper pins 38 by a locking portion 49 thereof.
A stopper 50 is provided on the external holder 1 side to hold each of the position 38 at the position where the engagement 38 is pressed down and the position where the engagement 38 is released.

As shown in FIG. 5, the stopper 50 fixes the curved leaf spring 50a to the external holder 1 by the guide member 47, and slides against the elasticity of the leaf spring 50a. The portion 50b is formed so as to protrude from the slider 45.

Further, as shown in FIGS. 1, 2 and 6, a simultaneous insertion preventing mechanism 51 is provided between the two operating bodies 2, 3 in order to prevent the simultaneous insertion operation of the pair of operating bodies 2, 3. It is attached.

The simultaneous insertion preventing mechanism 51 is formed on the upper surfaces of the pair of operating bodies 2 and 3, and at the opposing corners, the concave grooves 52 and 53 are formed facing each other in the front-rear direction. At the front ends of the two concave grooves 52, 53, recesses 54, 55 each having a substantially right-angled triangular shape, which are gradually enlarged in the left and right directions from the rear end to the front end, are continuously provided facing each other.
On the inner surface of the main body 1a of the outer holder 1, the double concave groove 5 is provided.
A pendulum 56 having a substantially isosceles triangular shape at a position corresponding to a continuous portion between the two concave portions 54 and 55 and the concave portions 54 and 55 is pivotally attached to the narrow end portion thereof with a pin 57 in the left-right direction. The pendulum 56 is disposed so as to be rotatable reciprocally, and the pendulum 56
The interior is configured.

According to the simultaneous insertion preventing mechanism 51, as shown in FIG. 6, when one operating body 3 is pushed into the external holder 1 and inserted, the inclined surface 55a of the concave portion 55 is formed. As a result, the pendulum 56 is rotated into the other concave portion 54, and when the operating body 3 is further pushed and inserted, the pendulum 56 is pressed against the side surface of the one concave groove 53, and the pendulum 56 is moved to the concave groove 53 and the concave portion 54. Is fitted within. As a result, while one operating body 3 is inserted into the outer holder 1, insertion of the other operating body 2 is prevented, and the operating body 2 is
Only after one of the operating bodies 3 has been retracted and returned to the original position can it be pushed into the external holder 1 and inserted.

Also, when the other operating body 2 is pushed and inserted, the pushing and insertion of the one operating body 3 is prevented in the same manner as described above. Therefore, simultaneous insertion of both operating bodies 2 and 3 is prevented.

When a substantially frusto-conical head 58 is fitted on the upper end of the stopper pin 38, the engagement and disengagement of the slider 45 with the locking portion 49 can be facilitated, which is convenient. Incidentally, in FIG. 1 and FIG. 7 (C) and FIG. 9 (A), 59 indicates a ferrule built into the plug 60.
Reference numeral 61 denotes windows for internal confirmation opened in the holder body 1a and the lid 1b of the external holder 1, respectively.

In order to remove the sleeve holder by using the above-described sleeve connector insertion tool for an optical connector, as shown in FIG.
Is inserted and fixed by the clamp 9.

In this state, as shown in FIG. 7A, one of the operating bodies, the operating body 2 in the illustrated example, is connected to the external holder 1.
, The inner holder 4 also moves forward integrally therewith, and the sleeve holder 31 is inserted into the tip of the insertion hole 22 at the same time as the four operating claws 27. Sleeve holder locking portion 28 formed in
a, 29a are expanded against the spring force. Furthermore, when the operating body 2 is pushed into the external holder 1 and inserted, the front end of the operating holder 2 is stopped without advancing because the tip abuts against the engaging flange 31b in front of the sleeve holder 31. Only move forward.

Therefore, the distal end opening 21 of the operating body 2
When the curved protruding portion 34b is pressed inward by the opening edge of the pair of leaf springs 34, 3 as shown in FIG.
4 is closed at its distal end, and the sleeves 31 are fixed to the flanges 31a, 3a by the locking claws 34a, 34a.
1b is clamped. 7B, the large-diameter shaft portion 38a of the stopper pin 38 is moved to the large-diameter hole portion 44b of the lock hole 44 of the operating member 2 as shown in FIG.
Is pushed up.

Next, when the pushing of the operating body 2 is released,
By the spring force, the operating body 2 and the internal holder 4 are retracted, and at this time, the locking claws 34a, 34a of the leaf springs 34, 34
Locks with the front flange 31b of the sleeve holder 31, so that as shown in FIG.
Is pulled out of the housing 8 and held. At this time, the sleeve holder 31 can be confirmed from the window hole 61.

Next, the tool is removed from the housing 8 by operating the clamp 9 and the ferrule 59 incorporated in the plug 60 is cleaned. Further, when the replacement or the insertion of the sleeve holder 31, by sliding the slider 45, depressed locking as shown the stopper pin 38 from the position shown in FIG. 8 (A) by its engaging portion 49 (B) Then, the inner holder 4 with respect to the operating body 2
Since is biased spring force forwardly, inner holder 4 by the small-diameter shaft portion 38b of the street stopper pin 38 shown in FIG. 8 (B) is fitted into the small-diameter hole portion 44a of Joana 44 Move forward by a fixed stroke. As a result, the pressing force of the leaf springs 34, 34 is released to expand, and
4a and 34a are opened to release the sleeve holder 31.
Then, the sleeve holder 31 is replaced.

[0053] The ferrule 58 after cleaning, be fixed as shown the tool while releasing the sleeve holder 31 shown in housing 8 and FIG. 8 (B) again in FIG. 9 (A).
At this time, the sleeve holder 31 cannot be confirmed from the window hole 61.

Next, when the operating body 2 is pushed into the external holder 1 against the spring force and inserted, the four operating claws 27.
· The sleeve holder locking portion 28 of the housing 8 by
a, 29a are expanded and then, by the front of the flange 31b is pressed in the axial direction as shown in FIG. 9 (B) by the tip of the inner holder 4, the sleeve holder 31
Is inserted into the housing 8 as shown.

Next, when the pushing force of the operating body 2 is released,
FIG. 9 shows the operating body 2 with the internal holder 4 by spring force.
Retreat as shown in (C). Thereby, the operating claw 2
The sleeve holder locking portions 28a, 29a of the housing 8 which have been expanded by the steps 7... Are closed and returned by their own spring properties and engage between the two flanges 31a, 31b. Will be inserted and held. Also at this time, the sleeve holder 31 cannot be confirmed from the window hole 61.

When inserting and removing the other sleeve holder,
The same operation as described above can be performed by the other operating body 3.

[0057]

Since the present invention is constructed as described above, the two sleeve holders are securely moved one by one into the housing by the continuous two operations of pushing the operating body and sliding the slider. The sleeve holder can be removed or inserted, and the sleeve holder can be removed and inserted while being fixed to the housing, so that the sleeve holder can be inserted and removed straight in the axial direction and tilted. There is no damage to the locking part of the housing, etc., and the removed sleeve holder can be securely held by the pair of locking claws and does not fall. It is also possible to prevent dust and the like from adhering, and to prevent loss and damage of the sleeve holder. Moreover, since the present invention is provided with a mechanism for preventing simultaneous insertion of a pair of operating bodies, it is possible to reliably prevent an operation error with respect to both operating bodies, in which the pair of operating bodies are simultaneously inserted into the external holder. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a use state showing an embodiment of a sleeve holder insertion / extraction tool according to the present invention.

FIG. 2 is a plan view showing a state in which a lid of the insertion / extraction tool is removed.

FIG. 3 is a perspective view showing a tip portion of an internal holder in the insertion / extraction tool.

FIG. 4 is a front view showing a double housing.

FIG. 5 is a plan view showing the same insertion / extraction tool.

FIG. 6 is a bottom view showing a simultaneous insertion prevention mechanism in the insertion / extraction tool.

7A and 7B show the same insertion / extraction tool, a housing, and a sleeve holder to be removed from the housing, wherein FIG. 7A shows a state in which an operating body is pushed into the external holder by one stage and is inserted, and FIG. 7B shows further operation from the state of FIG. With the body inserted, (C)
FIG. 7 is a longitudinal sectional view of a state in which the operating body is retracted and returned from the state of FIG.

FIG. 8 shows a state in which the same insertion and removal tool is removed from a housing, (A) shows a state in which a sleeve holder is attached,
(B) is each longitudinal sectional view in the state where the sleeve holder was released.

9A and 9B show the same insertion / extraction tool, a housing, and a sleeve holder to be inserted into the housing, wherein FIG. 9A shows a state in which an operating body is inserted into an external holder by one stage, and FIG. It is each longitudinal cross-sectional view in the state where the body was pushed into the external holder and inserted, and (C) is the state in which the operating body was retracted and returned from the state of (B).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 External holder 2, 3 Operating body 4, 5 Internal holder 8 Housing 22 Insertion hole 24 Push-out pin 27 Working claw 27a Inclined surface 31 Sleeve holder 34, 34 Leaf spring 34a Locking claw 38 Stopper pin 38a Large diameter shaft portion 38b Small diameter Shaft 44 Lock hole 45 Slider 49 Locking part 60 Plug

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Iwano 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Kazunori Kanayama 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Nippon Telegraph and Telephone Corporation (72) Inventor Yasuhiro Ando 1-6-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) References Japanese Utility Model 5-17611 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) G02B 6/36

Claims (1)

(57) [Claims] 1. A rectangular cylindrical external holder whose tip is inserted and removed so as to be freely inserted into and removed from a double-type housing in which two plugs and a sleeve holder are separately mounted and held adjacent to each other, and inside the external holder. A pair of first and second operating members slidably in the front-rear direction and urged by a spring force rearward to correspond to the plugs and the sleeve holder, respectively. A sleeve holder push-out pin which is slidably movable in the front-rear direction and is urged forward by a spring force in a sleeve holder insertion hole provided in the center, and an outer surface formed on an inclined surface by projecting forward from the four corners at the front end. A pair of plates having four operating claws for expanding the sleeve holder locking portion of the housing and a sleeve holder locking claw bent inward at the tip and fixed to both upper and lower sides so as to be openable and closable. Internal holder with springs in each direction By slidably provided and alternately pressing the first and second operating members, each of the operating claws expands the sleeve holder locking portion, and at the same time, the leaf spring closes against the spring force. As a result, the engagement flanges of the sleeve holder are sandwiched between the engagement members. On the other hand, concave grooves are formed on the upper surfaces of the two working bodies at opposing corner portions, and the two concave grooves are formed. At the front end of the ridge, a substantially rectangular right-angled triangular concave portion gradually expanding leftward and rightward from the rear end to the front end is provided in opposition to each other, and the continuation of the concave groove and the concave portion on the inner surface of the external holder. First and second actuations in which a pendulum having a substantially triangular shape in a plane is reciprocally rotatable in the left-right direction with its narrow end portion as a fulcrum, and is provided in both recesses at positions corresponding to the set portions. Inserting and removing sleeve holder characterized by providing a simultaneous insertion prevention mechanism for the body .