JP4516449B2 - Measuring tool for plug adapter - Google Patents

Description

  The present invention relates to a measuring tool for an optical connector, and more particularly to a measuring tool for a plug adapter that coaxially connects optical connector plugs respectively attached to tips of two optical fibers.

When two optical fibers are connected on the same axis, an optical connector plug is attached to each end of the two optical fibers, and these optical connector plugs are attached to a plug adapter.
And according to such an optical connector consisting of an optical connector plug and a plug adapter, two optical fibers are connected (for example, Patent Document 1 and Patent Document 2).

16 is a perspective view of the optical connector plug, FIG. 17A is a front view of the plug adapter, FIG. 16B is a sectional side view of the main part of the plug adapter, and FIG. 18 is a state in which the optical connector plug is attached to the plug adapter. A cross-sectional view is shown.
The optical connector plug 10 and the plug adapter 30 constituting the optical connector are SC type optical fiber connectors, and more specifically, are of a tool detachable type in the SC type optical fiber connector.
The optical connector plug 10 includes a rectangular housing 12 having a hollow cross section, a connector 14 attached to the rear portion of the housing 12, and a ferrule 16 provided in the housing 12 to which an optical fiber is attached. Yes.
As shown in FIG. 18, the ferrule 16 is urged by a coil spring 18 disposed inside the housing 12 in a direction that always projects from the front end surface of the housing 12, and the ferrule 16 is axially moved. It has a pressing force.
Locking recesses 20 for detachably attaching to the plug adapter 30 are formed on the side surfaces on both sides of the housing 12.

The plug adapter 30 includes a housing 32 and a pair of adapter portions 34, 34 provided coaxially on both end faces of the housing 32. The pair of adapter portions are omitted in the drawing, but are equally spaced vertically and horizontally. A plurality are formed.
Each adapter portion 34 is disposed in an insertion space 36 into which the optical connector plug 10 is inserted, a cylindrical portion 38 disposed in the back of the insertion space 36, and a portion of the optical connector plug 10 disposed between the cylindrical portions 38. A pair of elastically deformable locking claws 40 that are locked to the locking recess 20 are provided.
An elastic sleeve 42 into which the ferrule 16 of the optical connector plug 10 facing each other is inserted is attached to the cylindrical body 38.
The elastic sleeve 42 is for positioning the ferrules 16 on the same axis, and the pressing force of the ferrules 16 is for abutting the end surfaces of the ferrules 16 in close contact with each other. The locking claw 40 is for ensuring the mounting state of the optical connector plug 10 to the plug adapter 30 in order to abut the end surfaces of the ferrule 16 in a state of being in close contact on the same axis.
The shape of the ferrule 16, the locking recess 20, the locking claw 40, the elastic sleeve 42, and the like is the same as that of the F04 type single-core optical fiber connector defined by JIS C 5973.

In the tool detachable optical connector, the tool 44 shown in FIG. 19 is used when the optical connector plug 10 is removed from the state in which the plug adapter 30 is mounted.
The tool 44 is provided with a claw 48 at the tip of a pair of bars 46, and each claw 48 has a pair of narrow claw pieces 4802.
The pair of claw pieces 4802 are inserted into the insertion space 36 of the plug adapter 30 through both sides of the projection 2002 provided at the location of the housing 12 in the vicinity of the locking recess 20 as shown in FIGS. As shown in FIG. 17 (A), the claw portion 4001 of the locking claw 40 can be engaged with the recesses 4002 on both sides in the width direction, and the pair of claw pieces 4802 can be engaged with the recesses 4002 on both sides of the locking claw 40 in the width direction. The engaging claw 40 is forcibly opened by engaging and pushing.
That is, each claw piece 4802 forcibly opens the pair of locking claws 40 to release the locking claw 40 and the locking recess 20, thereby removing the optical connector plug 10 from the plug adapter 30. Is possible.

As described above, the pressing force of the ferrule 16 is for abutting the end surfaces of the ferrules 16 on the same axis so that the end surfaces of the ferrules 16 are in close contact with each other. This is for ensuring the mounting state of the butt optical connector plug 10 to the plug adapter 30 in close contact on the same axis. In order to obtain a stable optical fiber connection state, the pressing force of the ferrule 16 is used. In addition, it is necessary to measure the pressing force of the locking claw 40.
Therefore, a measuring instrument having a tip portion having substantially the same shape as that of the optical connector plug 10 is manufactured, and the tip portion having substantially the same shape as that of the optical connector plug 10 is attached to the plug adapter 30 so that the pressing force of the ferrule 16 and the locking claw 40 It is conceivable to measure the pressing force.
JP-A-3-296005 JP 4485538 A

However, at the time of measurement, once a tip portion having substantially the same shape as the optical connector plug 10 is attached to the plug adapter 30, a removal tool 44 shown in FIG. 19 must be used to remove it from the plug adapter 30.
Therefore, in the plug adapter 30 that connects the optical fibers in units of 100 or 200, the removal tool 44 must be operated at 100 locations and 200 locations each time, and the measurement efficiency cannot be increased.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a measuring tool capable of efficiently measuring the pressing force of a ferrule, the pressing force of a locking claw, and the like.

  To achieve the above object, the present invention provides a pair of insertion spaces into which a housing of an optical connector plug is inserted, an elastic sleeve that is disposed in each of the insertion spaces and into which a ferrule of the optical connector plug is inserted, and each of the insertion spaces. A measuring instrument for a plug adapter provided with a pair of elastically deformable locking claws provided at locations facing each other and locked in a locking recess of the housing, wherein the insertion portion is inserted into the insertion space; A contact portion that is provided in the insertion portion and contacts the location to be measured in the insertion space when the insertion portion is inserted into the insertion space, and the force received by the contact portion from the location to be measured is measured. A measuring portion; a main body portion having a length and having the insertion portion provided at an end in the length direction; a slide member coupled to the main body portion so as to be slidable in the length direction; A claw piece that is provided at the tip of the member so as to be inserted into the insertion space from the outside of the insertion portion, and that engages with the locking claw and opens the locking claw by being inserted into the insertion space. Features.

According to this invention, the force which a contact part receives from the location which should be measured in a plug adapter by a contact part and a measurement part is measured.
Further, the engagement state between the insertion portion and the plug adapter can be released by a simple operation of inserting the slide member into the insertion space and then pulling out the main body portion from the insertion space, and the measuring tool can be taken out from the plug adapter.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First, from the first embodiment, FIG. 1 (A) is a plan view of a measuring instrument according to the first embodiment, (B) is a front view, and FIG. 2 (A) is a main part of the measuring instrument. (B) is a cross-sectional front view, (C) is a front view, and (D) is a rear view.
The measuring tool 50 according to the first embodiment measures the pressing force of the locking claw 40 of the plug adapter 30.
The measuring tool 50 includes an insertion portion 52 inserted into the insertion space 36 of the plug adapter 30, a contact portion 54 provided in the insertion portion 52, a main body portion 56, and a slide member 58 provided in the main body portion 56. A claw piece 60 provided at the tip of the slide member 58 is provided.

The insertion part 52 is provided in the 1st member 62 attached to the front-end | tip of the main-body part 56, as shown in FIG. 2, FIG.
The first member 62 is hollow and has a rectangular shape.
The first member 62 has a length, and the outer shape of one end 62A in the length direction is formed in the same shape as the portion of the housing 12 of the optical connector plug 10 inserted into the insertion space 36. The insertion part 52 is comprised by this part.
Further, a shaft member 6204 having the same shape as the ferrule 16 is attached to the boss portion 6202 at the intermediate portion in the length direction of the first member 62, and the shaft member 6204 is connected to the ferrule 16 from the end surface of the first member 62. It protrudes with the same protrusion amount.
Locking recesses 6206 having the same outer shape as the locking recesses 20 of the housing 12 are provided on both sides of one end 62A in the length direction of the first member 62. The bottom surface of the locking recesses 6206 is engaged. Unlike the stop recess 20, it is opened.
A hole 6208 having a rectangular cross section is formed at the other end 62 </ b> B in the length direction of the first member 62.

As shown in FIG. 2, the first member 62 is attached to the main body portion 56 via the second member 64.
As shown in FIGS. 2 and 4, the second member 64 is composed of a pair of upper and lower divided bodies 66 and has a length.
A hollow rectangular portion 6402 is formed at one end in the length direction of the second member 64, and the rectangular portion 6402 is configured by one end 6602 in the length direction of each divided body 66.
Further, a cylindrical portion 6404 is formed at the other end in the length direction of the second member 64, and the cylindrical portion 6602 is configured by the other end 6604 in the length direction of each divided body 66.
The first member 62 and the second member 64 are attached by fitting the hollow rectangular portion 6402 into the hole 9208 of the first member 62 and fixing with a screw, and the length of the first member 62 is fixed. The other end 62B in the direction and the second member 64 are formed in a rectangular shape having the same outer shape.

As shown in FIG. 1, the main body portion 56 includes a base portion 5602 and an extending portion 5604 extending from the base portion 5602 and has a length.
Both the base portion 5602 and the extending portion 5604 are formed in a rectangular shape with a flat cross section, and a hole 5606 is formed through the base portion 5602 and the extending portion 5604.
Then, the cylindrical portion 6404 of the second member 64 is fitted into the fitting hole at the distal end of the extending portion 5604 and fixed with a screw, and the first member 62 is attached to the longitudinal end of the main body portion 56. Has been.
In addition, the main-body part 56 is also comprised by a pair of upper and lower divided parts, and these divided bodies are comprised by attaching with the screw | thread.

The contact portion 54 is provided in the insertion portion 52 and is configured to contact a portion to be measured in the insertion space 36.
In this embodiment, since the pressing force of the locking claw 40 is measured, the contact portion 54 is a contact member that can contact the locking claw 40 of the plug adapter 30 as shown in FIGS. 5402 and a support member 5404 that supports the contact member 5402.
The support member 5404 is formed of an elastically deformable spring plate that is narrow and extends linearly.
A contact member 5402 is fixed to the narrow width portion 5406 at the tip of the support member 5404 by welding, and a screw insertion hole 5408 is formed at the base of the support member 5404.
As shown in FIG. 2, the contact portion 54 has a base portion of the support member 5404 attached to the inside of the second member 64 by a screw inserted into a screw insertion hole 5408 of the support member 5404, and the support member 5404 is connected to the second member 64. The contact member 5402 extends from the inside of the member 64 to the inside of the first member 64, and the contact member 5402 is disposed at the open bottom of the locking recess 9206 of the first member 62.
Then, the insertion portion 52 is inserted into the insertion space 36 of the plug adapter 30, the shaft member 9204 is inserted into the elastic sleeve 42 of the plug adapter 30, and the locking claw 40 of the plug adapter 30 is locked to the locking recess of the first member 62. At this time, the claw portion 4001 of the locking claw 40 comes into contact with the contact member 5402, and the contact member 5402 is pushed down into the first member 62 by the elastic force of the locking claw 40 to be supported. The member 5404 is configured to be elastically deformed.

As shown in FIGS. 2 and 5, strain gauges 68 are attached to both sides in the middle of the length direction in which the support member 5404 is elastically deformed.
The strain gauge 68 is connected to a detection circuit and a calculation unit outside the measuring tool 50 via a lead wire 70 (see FIG. 1), and the support member 5404 is elastically deformed so that the strain of the support member 5404 is reduced. The detection circuit detects the change in the electric resistance, and the calculation unit calculates the pressing force of the locking claw 40 based on the change in the electric resistance.
Here, the detection circuit is composed of, for example, an analog circuit, and the arithmetic unit is, for example, an AD converter that converts an analog signal output from the analog circuit into a digital signal, and the dedicated program by executing a dedicated program. It is composed of a microcomputer that calculates a pressing force based on a digital signal.

As shown in FIG. 1, the slide member 58 includes a first slide portion 5802, a second slide portion 5804, and a connecting plate 5806 that connects the first slide portion 5802 and the second slide portion 5804. .
The first slide portion 5802 is slidably coupled on the extension portion 5604.
The second slide portion 5804 is slidably coupled to the other end 92 </ b> B in the length direction of the coupled first member 62 and the second member 64.
A pair of connecting plates 5806 are provided, extending on the short sides of the extending portion 5604 having a rectangular cross section with a flat cross section, and connecting the first slide portion 5802 and the second slide portion 5804.

The 2nd slide part 5804 is comprised by a part of nail | claw member 72 shown in FIG.
That is, the claw member 72 includes a hollow body portion 7202, and the claw piece 60 projects from the body portion 7202.
The body part 7202 constitutes a second slide part 5804, and the other end 62B in the length direction of the first member 62 coupled to the rectangular hole 7204 inside the body part 7202 and the second member 64 can slide. Is bound to.
Screw holes 7206 are formed on both sides of the body portion 7202, and the end portions of the connecting plate 5806 are connected to the claw member 72 through the screw holes 7206.
Two claw pieces 60 are provided on both sides of the body portion 7202, and their base portions are connected.
The claw piece 60 keeps the slide member 58 away from the insertion portion 52, the insertion portion 52 is inserted into the insertion space 36 of the plug adapter 30, the shaft member 9204 is inserted through the elastic sleeve 42 of the plug adapter 30, and the plug adapter 30. When the slide member 58 is moved in the direction of the insertion portion 52 in a state where the locking claw 40 is locked to the locking recess 6206 of the first member 62, as shown in FIG. The locking claw 40 enters the insertion space 36 from both sides, engages with the recesses 4002 on both sides in the width direction of the claw portion 4001 of the locking claw 40, and is elastically deformed in the opening direction. ing. That is, it is configured to exhibit the same function as the conventional claw piece 4802 of the tool 44.

According to the measuring tool 50 of the first embodiment, when the body portion 56 is held by hand and the insertion portion 52 is inserted into the insertion space 36 of the plug adapter 30 shown in FIG. 17, the shaft member 6204 is attached to the elastic sleeve 42 of the plug adapter 30. The locking claw 40 of the plug adapter 30 is locked in the locking recess 6206 of the first member 62.
At this time, the claw portion 4001 of the locking claw 40 contacts the contact member 5402, the contact member 5402 is pushed down into the first member 62, the support member 5404 is elastically deformed, and the support member is interposed via the strain gauge 68. The strain 5404 is detected as a change in electrical resistance, and the pressing force of the locking claw 40 of the plug adapter 30 is calculated.
By looking at the calculation result, the locking claw 40 of the plug adapter 30 ensures that the end face of the ferrule 16 is in close contact with the end face of the ferrule 16 while the optical connector plug 10 is attached to the plug adapter 30. It is determined whether or not the elastic force is sufficient.

As described above, when the elastic force of the latching claw 40 is determined, the insertion portion 52 is taken out from the insertion space 36, the insertion portion 52 is inserted into the next insertion space 36, and the next insertion space 36 is engaged. The elastic force of the pawl 40 is determined.
When the insertion portion 52 is removed from the insertion space 36, the measuring tool 50 is provided with a slide member 58 slidably on the main body portion 56, and a claw piece 60 is provided at the tip of the slide member 58. When 58 is moved to the insertion space 36 side, the claw piece 60 enters the insertion space 36 from both sides of the locking claw 40 of the plug adapter 30 shown in FIG. Engage with the concave portions 4002 on both sides in the width direction, and elastically deform the locking claws 40 in the opening direction.
Therefore, the engagement state with the plug adapter 30 can be released by a simple operation of inserting the slide member 58 into the insertion space 36 and then extracting the main body 56 from the insertion space 36, and the measuring tool 50 can be removed from the plug adapter 30. it can.
Therefore, it is possible to easily perform the removal operation of the measuring tool 50 in a short time as compared with the conventional case of performing the removal operation from the plug adapter 30 using the dedicated tool 44 each time. This is suitable when the elastic force of the locking claw 40 is measured in units of 200 locations.

Next, a second embodiment will be described.
FIG. 9A is a plan view of a measuring tool according to the second embodiment, FIG. 9B is a front view, FIG. 10A is a plan view of the main part of the measuring tool, and FIG. (C) shows a rear view.
The measuring tool 80 according to the first embodiment measures the pressing force of the ferrule 16 of the optical connector plug 10 mounted in one of the two insertion spaces 36 provided coaxially with the plug adapter 30. It is.
In addition to the insertion portion 82 inserted into the insertion space 36 of the plug adapter 30 and the contact portion 84 provided in the insertion portion 82, the measuring tool 80 includes a main body portion 86 and a slide member 88 provided in the main body portion 86. The claw piece 60 provided at the tip of the slide member 88 is provided.

The insertion part 82 is provided in the 1st member 92 attached to the front-end | tip of the main-body part 86, as shown in FIG. 10, FIG.
The first member 92 is hollow and has a rectangular shape.
The first member 92 has a length, and the outer shape of one end 92A in the length direction is formed in the same shape as the portion of the housing 12 of the optical connector plug 10 inserted into the insertion space 36. The insertion part 82 is comprised by this part.
Locking recesses 9203 having the same outer shape as the locking recesses 20 of the housing 12 are provided on both sides of one end 92 </ b> A in the length direction of the first member 92.
In addition, a shaft member 9204 having the same shape as the ferrule 16 is inserted in the inner bearing portion 9202 near the one end 92A in the length direction of the first member 92 so as to be movable in the axial direction.
The shaft member 9204 is connected to the first connecting member 9205 shown in FIG.
The first connecting member 9205 is disposed in the inner space of the first member 92 inside the bearing portion 9202 so as to be movable in the axial direction.
The first connecting member 9205 has a length, an attachment hole 9206 is formed at one end in the length direction, a bifurcated portion 9208 is provided at the other end in the length direction, and a hole 9210 is formed in each of the bifurcated portions 9208. Is formed.
An end portion of the shaft member 9204 is fitted and fixed in a mounting hole 9206 of the first connecting member 9205, and the shaft member 9204 and the first connecting member 9205 are attached so as to move integrally in the axial direction.

Further, a second connecting member 9220, a third connecting member 9230, and a fourth connecting member 9240 are provided in the internal space of the first member 92 inside the bearing portion 9202.
As shown in FIG. 13, the second connecting member 9220 includes a shaft portion 9222, a pair of arm portions 9224 protruding from both sides of the shaft portion 9222, and a male screw 9226 provided at the base end of the shaft portion. Have.
As shown in FIG. 10, the second connecting member 9220 has a shaft portion 9222 inserted into the inner space of the bifurcated portion 9208 of the first connecting member 9205, and a pair of arm portions 9224 shafted into the hole 9210 of the bifurcated portion 9208. It is inserted with backlash in the circumferential direction and the axial direction, and is configured to transmit only the axial force out of the force received by the shaft member 9204 to the third connecting member 9230 and the fourth connecting member 9240. Has been.

As shown in FIG. 14, the third connecting member 9230 has a cylindrical portion 9232, a trunk portion 9234, and a shaft portion 9236.
The second connecting member 9220 and the third connecting member 9230 are coupled by the male screw 9226 being screwed into the female screw 9232A at the tip of the cylindrical portion 9232.
As shown in FIG. 10, the fourth connecting member 9240 is attached to the other end of the internal space of the first member 92 with a screw.
A hole 9242 is formed in the fourth connecting member 9240, and a connecting flange 9244 is formed.
The shaft portion 9236 of the third connecting member 9230 is inserted into the hole 9242 of the fourth connecting member 9240 so as to be movable in the axial direction.
Then, a coil spring 9250 is wound around the shaft portion 9236 between the body portion 9234 of the third connecting member 9230 and the fourth connecting member 9240, and the third connecting member 9230 is attached in the direction of the insertion portion 82. As a result, the tip of the shaft portion 9222 of the second connecting member 9220 abuts on the rear end of the shaft member 9204 and biases the shaft member 9204 in a protruding direction.
In this state, the distal end of the first connecting member 9205 abuts on the inner wall portion of the bearing portion 9205, and the distal end of the body portion 9234 abuts on the wall portion of the internal space of the first connecting member 9205. The limit position is the most moved forward.

As shown in FIG. 9, the main body portion 86 includes a base portion 8602 and an extending portion 8604 extending from the base portion 8602 and has a length.
Both the base portion 8602 and the extending portion 8604 are formed in a rectangular shape with a flat cross section, and a hole 8606 is formed through the base portion 8602 and the extending portion 8604.
Then, the distal end of the extending portion 8604 is connected to the fourth connecting member 9240 via the connecting flange 9244 and the screw of the fourth connecting member 9240, whereby the first member 92, the shaft member 9204, the first The connecting member 9205, the second connecting member 9220, the third connecting member 9230, the fourth connecting member 9240, the extending portion 8604, and the base portion 8602 are disposed on the same axis.
In the present embodiment, the remaining portion of the first member 92 excluding the one end 92A is connected to the extending portion 8604, and therefore the remaining portion of the first member 92 excluding the one end 92A (insertion portion 82). This part constitutes the main body 86.

The contact portion 84 is provided in the insertion portion 82 and is configured to contact a portion to be measured in the insertion space 36.
In this embodiment, the pressing force of the ferrule 16 of the optical connector plug 10 attached to one of the two insertion spaces 36 provided coaxially with the plug adapter 30 is measured. In this embodiment, The shaft member 9204 contacts the ferrule 16, and the contact portion 84 is configured by the shaft member 9204.
Then, the insertion portion 82 is inserted into the insertion space 36 of the plug adapter 30, the shaft member 9204 is inserted into the elastic sleeve 42 of the plug adapter 30, and the locking claw 40 of the plug adapter 30 is locked to the locking recess of the first member 92. The shaft member 9204 is engaged with the ferrule 16 of the mating optical connector plug 10 mounted in the insertion space 36 of the plug adapter 30, and the shaft member 9204 is brought into contact with the ferrule 16 of the mating optical connector plug 10. It is pressed in the axial direction.
At this time, the pressing force is transmitted to the coil spring 9250 through the shaft portion 9222 of the second connecting member 9220 and the cylindrical portion 9232 of the third connecting member 9230, and the coil spring 9250 is compressed and deformed. Then, the second connecting member 9220 and the third connecting member 9230 are retracted, and the shaft member 9204 is retracted. In the present embodiment, the second connecting member 9220 and the third connecting member 9230 constitute an axial force transmission member.

As shown in FIGS. 10 and 14, strain gauges 68 are affixed at four locations at equal intervals in the circumferential direction of the outer peripheral surface in the middle portion of the cylindrical portion 9232 of the third connecting member 9230 in the longitudinal direction. .
The strain gauge 68 is connected to a detection circuit and a calculation unit outside the measuring tool 80 via a lead wire 70 (see FIG. 9), and the strain of the cylindrical portion 9232 is caused by the stress of the cylindrical portion 9232. The detection circuit detects the change in electric resistance, and the calculation unit measures the pressing force of the ferrule 16 of the counterpart optical connector plug 10 based on the change in the electric resistance.
Here, the detection circuit is composed of, for example, an analog circuit, and the arithmetic unit is, for example, an AD converter that converts an analog signal output from the analog circuit into a digital signal, and the dedicated program by executing a dedicated program. It is composed of a microcomputer that calculates a pressing force based on a digital signal.

As shown in FIG. 9, the slide member 88 includes a first slide portion 8802, a second slide portion 8804, and a connecting plate 8806 that connects the first slide portion 8802 and the second slide portion 8804. .
The first slide portion 8802 is slidably coupled on the extension portion 8604.
The second slide portion 8804 is slidably coupled to the first member 92.
A pair of connecting plates 8806 are provided, each extending on a short side of the extending portion 8604 having a rectangular cross section having a flat cross section, and connecting the first slide portion 8802 and the second slide portion 8804.

The second slide portion 8804 is constituted by a part of the claw member 72 shown in FIG. 8 as in the first embodiment.
That is, the claw member 72 includes a hollow body portion 7202, and the claw piece 60 projects from the body portion 7202.
A second slide portion 8804 is configured by the body portion 7202, and the first member 92 is slidably coupled to a rectangular hole 7204 inside the body portion 7202.
Screw holes 7206 are formed on both sides of the body portion 7202, and the end portions of the connecting plate 8806 are connected to the claw member 72 through the screw holes 7206.
Two claw pieces 60 are provided on both sides of the body portion 7202, and their base portions are connected.
The claw piece 60 keeps the slide member 88 away from the insertion portion 82, the insertion portion 82 is inserted into the insertion space 36 of the plug adapter 30, the shaft member 9204 is inserted into the elastic sleeve 42 of the plug adapter 30, and the plug adapter 30. When the slide member 88 is moved in the direction of the insertion portion 82 in a state where the locking claw 40 is locked to the locking recess 9203 of the first member 92, as shown in FIG. The locking claw 40 enters the insertion space 36 from both sides, engages with the recesses 4002 on both sides in the width direction of the claw portion 4001 of the locking claw 40, and is elastically deformed in the opening direction. ing. That is, it is configured to exhibit the same function as the conventional claw piece 4802 of the tool 44.

According to the measuring tool 80 of the second embodiment, when the body portion 86 is held by hand and the insertion portion 82 is inserted into the insertion space 36 of the plug adapter 30 shown in FIG. 17, the shaft member 9204 is attached to the elastic sleeve 42 of the plug adapter 30. The locking claw 40 of the plug adapter 30 is locked in the locking recess 9203 of the first member 92.
At this time, the shaft member 9204 contacts the ferrule 16 of the counterpart optical connector plug 10 that is mounted in the insertion space 36 of the plug adapter 30, and the shaft member 9204 is moved in the axial direction by the ferrule 16 of the counterpart optical connector plug 10. Pressed.
This pressing force is transmitted to the tube portion 9232 of the third connection member 9230 via the shaft portion 9222 of the second connection member 9220, and therefore, the stress change of the tube portion 9232 is transmitted to the support member 8404 via the strain gauge 68. The strain is detected as a change in electrical resistance, and the pressing force of the ferrule 16 of the counterpart optical connector plug 10 is calculated.
By looking at the calculation result, the ferrule 16 of the counterpart optical connector plug 10 can be surely attached to the plug adapter 30 of the abutting optical connector plug 10 with the end faces of the ferrule 16 being in close contact on the same axis. It is determined whether or not the pressing force is sufficient to squeeze.

As described above, when the pressing force of the ferrule 16 of the counterpart optical connector plug 10 is determined, the insertion portion 82 is taken out from the insertion space 36, the insertion portion 82 is inserted into the next insertion space 36, and the next The elastic force of the locking claw 40 in the insertion space 36 is determined.
When the insertion portion 82 is removed from the insertion space 36, the measuring tool 80 is provided with a slide member 88 slidably on the main body portion 86, and a claw piece 60 is provided at the tip of the slide member 88. When 88 is moved to the insertion space 36 side, the claw piece 60 enters the insertion space 36 from both sides of the locking claw 40 of the plug adapter 30 shown in FIG. Engage with the concave portions 4002 on both sides in the width direction, and elastically deform the locking claws 40 in the opening direction.
Therefore, the engagement state with the plug adapter 30 can be released by a simple operation of inserting the slide member 88 into the insertion space 36 and then withdrawing the main body 86 from the insertion space 36, and the measuring tool 80 can be removed from the plug adapter 30. it can.
Therefore, it is possible to easily and detach the measuring tool 80 in a short time compared to the conventional case where the detachment operation from the plug adapter 30 is performed using the dedicated tool 44 each time. This is suitable for measuring the pressing force of the ferrule 16 of the counterpart optical connector plug 10 in units of 200 locations.

  In addition, although the above-mentioned Example demonstrated the case of the measuring tool which measures the pressing force of a ferrule, and the measuring tool which measures the pressing force of a latching claw, the location to measure may be another location.

(A) is a top view of the measuring tool which concerns on 1st Embodiment, (B) is a front view. (A) is a top view of the principal part of a measuring tool, (B) is a cross-sectional front view, (C) is a front view, (D) is a rear view. (A) is a sectional plan view of the first member, (B) is a front view, (C) is a front view, and (D) is a rear view. (A) is a top view of a divided body, (B) is a sectional front view, (C) is a front view, and (D) is a rear view. It is explanatory drawing of a contact member and a supporting member. (A) is a top view of a supporting member, (B) is a front view. (A) is a front view of a contact member, (B) is a top view, (C) is a side view. (A) is a front view of the claw member, (B) is a plan view, (C) is a front view, and (D) is a rear view. (A) is a top view of the measuring tool which concerns on 2nd Embodiment, (B) is a front view. (A) is a top view of the principal part of a measuring tool, (B) is a cross-sectional front view, (C) is a rear view. (A) is a plan view of the first member, (B) is a sectional front view, (C) is a front view, and (D) is a rear view. (A) is a top view of a 1st connection member, (B) is a front view, (C) is a rear view. (A) is a front view of a 2nd connection member, (B) is a side view. (A) is a top view of a 3rd connection member, (B) is a front view, (C) is a rear view. (A) is a top view of a 4th connection member, (B) is a front view, (C) is a front view, (D) is a rear view. It is a perspective view of an optical connector plug. (A) is a front view of a plug adapter, (B) is a principal part cross-sectional front view of a plug adapter. It is sectional drawing of the state in which the optical connector plug was mounted | worn with the plug adapter. It is a perspective view of the tool for optical connector plug removal.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Optical connector plug, 16 ... Ferrule, 30 ... Plug adapter, 40 ... Locking claw, 50 ... Measuring tool, 52, 82 ... Insertion part, 54, 84 ... Contact part, 56, 86 ... Main body, 58, 88 ... Slide member, 60 ... Claw piece, 80 ... Measuring instrument.

Claims (3)

A pair of insertion spaces into which the housing of the optical connector plug is inserted; an elastic sleeve that is disposed in each of the insertion spaces and into which a ferrule of the optical connector plug is inserted; A measuring instrument for a plug adapter comprising a pair of elastically deformable locking claws locked in a locking recess,
An insertion portion to be inserted into the insertion space;
A contact portion that is provided in the insertion portion and contacts a location to be measured in the insertion space when the insertion portion is inserted into the insertion space;
A measurement unit for measuring the force received by the contact unit from the location to be measured;
A main body having a length and having the insertion portion provided at an end in the length direction;
A slide member slidably coupled to the body portion in the length direction;
A claw piece that is provided at the tip of the slide member so as to be inserted into the insertion space from the outside of the insertion portion, and is inserted into the insertion space to engage with the locking claw and open the locking claw;
A measuring instrument for a plug adapter, comprising:   The location to be measured is the locking claw, and the insertion portion is provided with a locking recess having the same shape as the locking recess and having a bottom opened, and the contact portion is opened by the locking recess. The contact portion is arranged at the bottom, and the contact portion is supported inside the insertion portion by an elastically deformable support member, and the measurement portion is configured to include a strain gauge attached to the support member. 2. The measuring tool for plug adapter according to claim 1, wherein pressure is measured. An optical connector plug is attached to one of the pair of insertion spaces, and the portion to be measured is a ferrule of an optical connector plug already attached to the insertion space, and the insertion portion is coaxial with the ferrule. A shaft member that can contact the ferrule is provided above, an axial force transmission member that extends coaxially with the shaft member is coupled to the shaft member, and the shaft member contacts the ferrule. The axial force transmission member and the biasing means are disposed inside the main body, and the measurement unit has a strain gauge attached to the axial force transmission member. The plug adapter measuring instrument according to claim 1, wherein the measuring tool is configured to measure an axial pressing force of the ferrule.

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