JPS60142310A - Operating lever mechanism of clamping device for optical fiber - Google Patents

Abstract

PURPOSE:To obtain an operating lever mechanism which almost eliminates lever misoperation by forming a slide receiving part in the moving direction of a moving table and a slide projection part to be fitted in said slide receiving part at mutually opposite end parts of an interlocking lever and a handle lever respectively. CONSTITUTION:The handle lever 21 has the slide projection part 22 to be fitted in the slide receiving part 18 at its one lengthwise end, and also has a guide projection part 23 to be fitted between guide members 20 and 20 in its reverse surface; and the guide projection 23 if fitted in the guide members 20 and 20 to enter a specific supporting and interlocking state. On the other hand, the depression specifying stopper 25 for a pushing/pressing lever 11 is arranged between the front surface of the moving table 7 and an abutting part 19 so as to collide against the abutting part 19, and the stopper 25 is supported by a joint material 26 extended from one guide member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clamp device for holding round fibers during fusion splicing, with an improved operating lever mechanism for the clamp device.

When fusion splicing coated optical fibers, whether single or multi-core, remove the coating from the ends of the optical fibers,
After cutting the end portions to a predetermined length, a setting step of arranging the end portions of the paired optical fibers to face each other, a step of setting the distance between the end faces of the optical fibers, and a step of heating and melting the ends of these optical fibers. Figure 1 shows an example of a state in which the end face spacing of a multi-core optical fiber is set. become that way.

In Fig. 1, IA and IB are coated multi-core optical fibers, 2A and 2B are their coated parts, 3A, 3A...
and 3B, '3B, . . . are optical fiber ends from which the coating has been removed, 4 is a spacing tool called an abutment plate, and 5M and 5N are discharge electrodes for fusion heating.

Generally, when optical fibers are fused and spliced together through the various steps described above, a clamping device shown in FIGS. 2 and 3 is used.

The apparatus shown in FIGS. 2 and 3 includes a fixed guide table (11+combined table) 6, a movable table 7, and a presser arm 8, and the structure and relative relationship of these are as follows.

The fixed guide stand 6 is divided into two parts, and the upper surface thereof serves as guide surfaces 9A and 9B for the optical fiber. It is formed like this.

This fixed guide stand 6 is fixed on a body (not shown).

The tapered upper surface of the movable table 7 serves as a mounting surface 1o for the optical fiber, and the movable table 7 is provided with a push/pull lever 11 that passes through it in the front-rear direction.

This movement D7 is arranged adjacent to the fixed guide stand 6 so as to be able to move freely toward the side of the fixed guide stand 6, and is moved in the direction of the force shown in FIG. It has become.

Specifically, the moving metal piece is inched by power transmission from a pulse motor or the like.

On the other hand, the push/pull lever 11 is shown as zz' in FIGS.
It can move freely in the direction of force.

The presser arm 8 has a plurality of pressers 12 and 13 on the lower surface of its upper end.
．． 14, and the presser arm 8 is pivotally supported by a support 16 having a bin 16 on the rear side of the fixed guide table 6 and the movable table 7, and the presser arm 8 is pivoted in the direction of arrow RR' in FIGS. 2 and 3. It can be rotated freely.

When the presser arm 8 is rotated in the direction of arrow R, the presser 12 is lowered onto the fixed guide table 6, and the other pressers 13, 14 are lowered onto the movable table 7.

Furthermore, the lower end of the presser arm 8 and the rear end of the push/pull lever 11 are in contact with each other, and when the push/pull lever 11 is pushed in the direction of the arrow 2, the presser arm 8 rotates in the direction of the arrow R. do.

Note that a cam mechanism, link mechanism, etc. may be interposed between the lower end of the presser arm 8 and the rear end of the push/pull lever 11, and by pulling the push/pull lever 11 in the direction of arrow 2', The presser arm 8 can also be rotated in the direction of arrow R.

In FIG. 2, a movable table 7 and a presser arm 8 are shown on the left side of the fixed guide table 6, but each member on the left side is for use by one person using the optical fiber, and the fixed guide table 6 (not shown) A moving table 7 and a presser arm 8 for the optical fiber 1B are also installed on the right side of the optical fiber 1B so as to be symmetrical to those on the left side.

On the other hand, the above-mentioned interval setting tool 4 is disposed vertically through the tool 4 at the center in the longitudinal direction of the fixed guide base 6, and the second
The trap is designed to move up and down in the Y-Y' force direction in the figure.

The pair of discharge electrodes 5M and 5N are arranged on the front and rear sides of the rigging 6 on a line passing through the longitudinal center of the fixed guide stand 6, and are opposed to each other.

When the space setting tool 4 and the discharge electrodes 5M and 5N are also included, the apparatus shown in FIGS. 2 and 3 is called an optical fiber fusion splicing apparatus.

When clamping the optical fiber 1A shown in FIG. 1 using the apparatus shown in FIGS. Optical fiber end 3A
, 3A... on the guide surface 9A of the fixed guide stand 6, that is, into each V groove of the guide 9A, and then push the push/pull lever 11 in the direction of arrow Z. 8f: Rotate in the direction of arrow R, and each optical fiber end 3A,
3A... and the covering portion 2A are lightly pressed against the guide surface 9A and the mounting surface 10.

Next, by moving the moving table 7 in the direction of the arrow X, the end faces of the optical fiber ends 3A, 3A, . Push the push/pull lever 11- again in the direction of arrow Z to release each optical fiber end 3A.

3A...and the covering part 2A are firmly clamped.

Optical fiber 1B, whose explanation is omitted, is also optical fiber 1A,! :
Treated similarly.

By the way, when each part of the optical fiber is firmly clamped in the above, it is necessary to push the push/pull lever 11 accurately in the two directions of the arrows. When the pull lever 11 is pushed,
Since the optical fiber end portions 3A, 3A, . . . are subjected to a force in the direction of the arrow X while their end faces are in contact with the distance setting tool 4, breakage accidents occur.

Of course, in order to prevent such an accident from occurring, care must be taken to operate the push/pull lever 11 accurately, or it is quite possible that the end of the optical fiber may be broken due to incorrect manual operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide an operating lever mechanism in this type of optical fiber clamp device that does not allow for erroneous lever operation.

The present invention is characterized by: - a fixed guide table whose H surface serves as a guide surface for the optical fiber; a movable table whose upper surface serves as a mounting surface for the optical fiber; and the fixed guide table and the movable table. In relation to the presser arm for holding the optical fiber in step 2, the movable table is placed adjacent to the fixed guide table so that it can move freely toward the side of the fixed guide table, and the upper end The presser arm, which can be freely clamped onto the upper surface of the fixed guide table and the upper surface of the movable table, is located behind the fixed guide table L and the movable table, and is pivoted so that it can move up and down. The table has an optical fiber clamping device in which a push/pull lever for operating the presser arm is movable backwards, and a linking lever or a protruding lever is provided at the front end of the push/pull lever. On the front side of the movable table in both tables, there is a guide R1t) which extends in the push and pull direction of the push and pull lever, and a handle lever that is supported by the guide portion and is movable in the push and pull direction. are arranged, and the mutually opposing ends of the linking lever and the handle lever are provided with a sliding receiving part along the moving direction of the moving base and a sliding receiving part that fits into the sliding receiving part. The sliding projection γ11S is formed relative to the
In addition, the sliding receiving part and the sliding protrusion are fitted together to connect the connecting lever and the handle lever, and a connecting lever part is provided, and the corresponding connecting part and the moving base are connected. 1
) A stopper for regulating the pushing movement of the push/pull lever is arranged between the push lever and the push/pull lever so as to be able to abut against the stopper.

Next, embodiments of the present invention will be specifically described based on the drawings.

The configurations of the fixed guide table 6, movable table 7, and presser arm 8 in the present invention and their relative relationships are the same as those illustrated in Figures 2 and 3 of IJ, and therefore, explanations regarding these are omitted. The operation lever mechanism provided in conjunction with the push/pull lever 11 of the movable table 7 will be explained with reference to FIGS. 4 and 5.

In FIGS. 4 and 5, reference numeral 17 denotes a connecting lever protruding from the front end of the push/pull lever 11.
A groove-shaped sliding receiving part 18 is formed on the upper surface of the moving table 7 in the moving direction (arrow x-x' direction), and a contact part 19 or a protruding part is formed on one side of the connecting lever 17. It is formed by

On the front side of the moving table 7, there is an L along the push/pull direction of the push/pull lever 11.
The m-shaped guide parts A'A' 20 and '20 are rearranged, and the handle lever 21 is attached to this guide part 20.

20 and is connected to the connecting lever 1.

That is, a sliding part 22 that fits into the sliding receiving part 18 is formed at one end in the longitudinal direction of the handle lever 21, and a guide part 22 that fits into the sliding receiving part 18 is formed on the lower surface of the sliding part 22. A protrusion 23 is provided, and the handle lever 21 has its sliding protrusion 22 fitted into the sliding receiving part 18, and the guiding detour 23 is a guide.
The grooves are inserted between the holes 20 and 20 to achieve a predetermined support and connection state.

Furthermore, a knob hole 24 is also formed in the handle lever 21.

On the other hand, a push-motion regulating stopper 26 of the push/pull lever 11 is arranged between the front surface of the movable bar and the abutment part 19 so that it can freely abut against the abutment part 19, and this stopper 25i-j It is supported by a joint material 26 extending from the member 2o.

In the present invention, when the handle lever 24 is pushed in the two directions of the arrows in FIGS. 4 and 5, the sliding protrusion 22 of the handle lever 24 and the sliding receiving part 18 of the connecting lever 17 are engaged with each other. In this state, the push/pull lever 11 is pushed in the two directions of the arrow, and this pushing is regulated by the contact portion 19 hitting the stopper 25.

In this first pushing movement, as described above, the guide surface 9A
The upper optical fiber ends 3A, 3A, . . . and the covering portion 2A on the mounting surface 1o can be lightly restrained.

Thereafter, when the moving table 7 is moved in the direction of the arrow X in FIGS. ,
The connecting lever 17 moves in the same direction, and at this time, the contact portion 19
is removed from the stopper 26, but the sliding receiving portion 18 and the sliding protrusion 22 only slide relative to each other, and their engaged state is maintained as it is.

In the above, since the contact portion 19 has come off the stopper 26, the push/pull lever 11 can be pushed in further than described above, and therefore the push/pull lever 11 can be pushed again in the direction of arrow Z via the handle lever 21. By moving (secondary), the aforementioned optical fiber ends 3A, 3A...
. . ., the covering portion 28 can be clamped in a predetermined manner.

When operating the lever in this way, the link lever 4-17 and the handle lever 21 are configured to slide in the direction of arrow x-x', so even if a force in the same direction is applied to the handle lever 21, it will not be pushed. There is almost no action on the pulling lever 11, and the non-driving lever 21 is pushed precisely in the direction of the arrow Z by the guide H'S1 (20. Therefore, not only the first pushing movement but also the second pushing movement cause the optical fiber end 3A,
Accidents that break 3A... will not occur.

In addition, the stopper configuration consisting of the abutting portion 19, the stopper ζ 25, and the tail allows the first and second pushing operations to be performed with good control, and especially during the first pushing operation, the push/pull lever <-11 cannot be pushed in excessively. The arrow Z of the push/pull lever 11 has a sliding structure made up of the sliding receiving part 18 and the sliding protrusion 22.
-Movement in the Z direction and movement of the moving table 7 in the arrow xx' direction can be realized without functional failure.

In addition, in the relative relationship between the connecting lever 17 and the handle lever 21, the concave sliding receiving part 18 or the handle lever 2
1 side, and the convex sliding receiving portion 22 may be located on the connecting lever 17 side.

Guide portion 4A'20 constituting a concave fitting portion
．． 20 convex guide protrusion 23 of handle bar 21
When the guide wing has a convex shape in relation to the
Correspondingly, there is a guide port (51) on the non-dol lever 21 side.
X is formed.

Further, regarding the abutting portion 19 of the connecting lever 17 and the stopper 26, the movable table 7 moves within a predetermined stroke range indicated by the arrows x-x.
Both of these 1, 9 and 25 may be provided at locations other than those shown, as long as they can be moved in the ' direction.

The device of the present invention can also be applied to clamping a single optical fiber.

As explained above, the operating lever mechanism of the optical fiber clamp device according to the present invention can be operated without breaking the optical fiber end, and has good operability.

[Brief explanation of the drawing]

Figure 1 shows the setting state of the end face spacing of the optical fiber.
2 and 3 are a side view and a perspective view of essential parts illustrating a clamping device based on the present invention, and FIG. 1' side map Yoshibun 'A'! FIG. 1A, IB... Optical fiber 2A, 2B... Optical fiber coating 3A, 3B
...Optical fiber end 6... Fixed guide U 7... Moving table 8... Presser arms 9A, 9'B... Guide surface 10... ... Placement surface 11 ... Push/pull lever 15 ... Presser arm rotation fulcrum pin 17 ...
, Soil connecting lever 18...Sliding receiving part 19...Abutment part 20...Guide part lever 21...0, Handle lever 22...Sliding protrusion 23... Guide protrusion 261111h+1 Stopper Patent applicant representative Patent attorney Makoto Ito @ 2 r/+ @ 31 Sentence 1 14 Figure

Claims (1)

[Claims] A fixed guide table whose top surface serves as a guide surface for the optical fiber, and a movable table whose top surface serves as a mounting section for the optical fiber.
Regarding the relative relationship between the fixed guide table and the optical fiber holding arm on the movable table, the movable table is placed adjacent to the fixed guide table so that it can move freely toward the side of the fixed guide table. The presser arm, whose upper end corresponds to the upper surface of the fixed guide table and the two surfaces of the movable table, is located behind the fixed guide table and the movable table and is pivoted so as to be movable up and down. In the optical fiber clamp device, a push/pull lever for operating the presser arm is provided on the movable table so as to be movable back and forth, and a connecting lever is protruded from the front end of the push/pull lever. At the same time, on the target side of the movable table, there are arranged a guide part along the push/pull direction of the push/pull lever, and a noddle lever supported by the guide part ladle and movable in the push/pull direction, A) 11 parts of the connecting lever and the handle lever that face each other include:
A sliding receiving part along the moving direction of the moving platform and a sliding protrusion that fits into the sliding receiving part are formed opposite each other, and these sliding receiving parts and the sliding protrusion are fitted into each other. The connecting lever and the handle lever are connected, and the -Iyl- connecting lever is provided with an abutting part, and a stopper or a stopper for regulating the pushing movement of the push/pull lever is provided between the abutting part and the front of the moving platform. The operating lever mechanism of the optical fiber clamp device is arranged so that it can collide with the contact part.