JP7288376B2 - optical fiber positioning device - Google Patents

Description

The present invention relates to an optical fiber positioning device.

Generally, in an optical fiber manufacturing process, various inspections using an inspection device such as an OTDR (Optical Time Domain Reflectometer) are performed. When performing such an inspection, there are cases where a part of the optical fiber is positioned and fixed in order to maintain the connection between the inspection device and the optical fiber. Patent Literature 1 listed below describes an inspection apparatus that inspects an optical fiber in a state in which a portion of the optical fiber is positioned and fixed.

The inspection device disclosed in Patent Document 1 below includes a clamp having a base in which a groove is formed and a cover attached to the base so as to close the opening of the groove. The width of the groove corresponds to the diameter of the optical fiber. A plurality of suction holes are formed in the bottom surface of the groove of the base and the surface of the base that contacts the cover. In the inspection apparatus disclosed in Patent Document 1, a cover is attached to the base with a portion of the optical fiber inserted into the groove, and the portion of the optical fiber is sandwiched between the base and the cover. The cover is fixed to the base and a part of the optical fiber is fixed to the base by sucking air from the plurality of suction holes by the suction device.

U.S. Pat. No. 5,871,559

In the inspection apparatus described in Patent Document 1, in order to position and fix a part of the optical fiber, it is necessary to carry the part of the optical fiber to a groove whose width corresponds to the diameter of the optical fiber, and a suction device is used to fix a portion of the optical fiber. Therefore, an optical fiber positioning device that can easily position and fix a portion of an optical fiber is desired.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an optical fiber positioning device capable of easily positioning and fixing a portion of an optical fiber.

To achieve the above object, the optical fiber positioning device of the present invention comprises: a holder having a first magnetic part containing a magnetic material and holding a part of the optical fiber; a second magnetic part containing a magnetic material; and a base having a positioning portion with which the holder abuts, wherein the second magnetic portion is not arranged on the holder side with respect to the mounting surface. , at least one of the first magnetic portion and the second magnetic portion is a magnet, and the first magnetic portion and the second magnetic portion are attracted to each other by the magnetic force of the magnet, whereby the holder is placed on the mounting surface. The number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion in a state in which the holder is pressed against the positioning portion and pressed against the surface and the positioning portion is determined by The number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion when the holder is separated from the positioning portion in the direction opposite to the direction of the pressing force is characterized.

In this optical fiber positioning device, the holder is pressed against the mounting surface and the positioning portion by attracting the first magnetic portion and the second magnetic portion to each other due to the magnetic force of the magnet. Therefore, in this optical fiber positioning device, the optical fiber is positioned in a direction parallel to the direction of the force that presses the holder against the positioning portion, out of the direction perpendicular to the mounting surface and the direction within the mounting surface. can be fixed. Further, according to this optical fiber positioning device, even if the holder is placed on the mounting surface at a predetermined distance from the positioning portion in the direction opposite to the direction of the force pressing the holder against the positioning portion, the magnetic force will The holder can be drawn to the locator and pressed against the locator. For this reason, this optical fiber positioning device can position and fix a part of the optical fiber even if the holder is placed on the placement surface in a state of being displaced from the predetermined position. Therefore, this optical fiber positioning device can easily position and fix a part of the optical fiber as compared with the case where the part of the optical fiber is directly carried to the positioning position and fixed. Further, in this optical fiber positioning device, as described above, the second magnetic portion is not arranged on the holder side with respect to the mounting surface. When the second magnetic part is arranged on the holder side with respect to the mounting surface, the area where the second magnetic part can be arranged when the mounting surface is viewed from above is the area that does not overlap with the holder. However, if the second magnetic section is not arranged on the holder side with respect to the mounting surface, the second magnetic section can also be arranged in a region that overlaps with the holder when the mounting surface is viewed from above. Therefore, this optical fiber positioning device can widen the range in which the holder can be drawn toward the positioning portion by the magnetic force, compared to the case where the second magnetic portion is arranged on the holder side with the mounting surface as a reference. Further, in this optical fiber positioning device, the number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion in a state in which the holder is pressed against the positioning portion is opposite to the direction of the force pressing the holder against the positioning portion. It is larger than the number of magnetic flux lines by the magnet passing through the first magnetic portion and the second magnetic portion when the holder is separated from the positioning portion in the direction. Therefore, this optical fiber positioning device can prevent the movement of the holder from stopping before the holder is pressed against the positioning portion when the holder is pulled toward the positioning portion by the magnetic force.

The second magnetic portion may not be exposed on the mounting surface.

This optical fiber positioning device can suppress the formation of a step on the mounting surface as compared with the case where the second magnetic portion is exposed on the mounting surface. Therefore, in this optical fiber positioning device, when the holder is pulled toward the positioning portion by the magnetic force, the movement of the holder can be prevented from stopping before the holder is pressed against the positioning portion.

The base may further include a guide portion that regulates movement of the holder in a direction perpendicular to a direction of force pressing the holder against the positioning portion, among the in-plane directions.

This optical fiber positioning device can fix the optical fiber in a state in which the position of the optical fiber in the direction perpendicular to the direction of the force pressing the holder against the positioning portion is restricted within a predetermined range.

The base further has another positioning portion having a magnet and with which the holder abuts, and the magnet of the another positioning portion and the first magnetic portion attract each other, so that the holder moves to the other position. The direction of the force that is pressed against the positioning portion and presses the holder against the another positioning portion may be non-parallel to the direction of the force that presses the holder against the positioning portion in the mounting surface direction.

This optical fiber positioning device can fix the optical fiber in a state in which the optical fiber is further positioned in the direction perpendicular to the direction of the force pressing the holder against the positioning portion in the mounting surface direction.

If the base has another positioning portion, the force pressing the holder against the another positioning portion may be smaller than the force pressing the holder against the positioning portion.

In this optical fiber positioning device, the force with which the first magnetic portion and the second magnetic portion attract each other can be made larger than the force with which the first magnetic portion and the magnet of the other positioning portion attract each other. Therefore, when the holder is pulled toward the positioning portion by magnetic force, the optical fiber positioning device can prevent the holder from stopping due to the magnetic force of the magnet of another positioning portion before the holder is pressed against the positioning portion.

The second magnetic portion has a main magnetic portion made of a magnet and a sub-magnetic portion made of a magnet, and the main magnetic portion and the sub-magnetic portion are arranged in the direction of the force for pressing the holder against the positioning portion. The sub magnetic portion and the main magnetic portion are arranged in this order, and the maximum value of the magnetic field intensity of the sub magnetic portion on the surface including the mounting surface is smaller than the maximum value of the magnetic field intensity of the main magnetic portion. You can do it.

This optical fiber positioning device widens the range of the magnetic field of the second magnetic part in the direction opposite to the direction of the force pressing the holder against the positioning part, compared to the case where the second magnetic part does not have the sub-magnetic part. can be done. In addition, this optical fiber positioning device can prevent the movement of the holder from stopping due to the magnetic force of the submagnetic portion before the holder is pressed against the positioning portion when the holder is pulled toward the positioning portion by the magnetic force. Therefore, this optical fiber positioning device can widen the range in which the holder can be attracted to the positioning portion by magnetic force.

Of the first magnetic portion and the second magnetic portion, only the second magnetic portion may be a magnet.

This optical fiber positioning device can prevent the holder from being fixed to a member different from the base by magnetic force, and can facilitate handling of the holder. In addition, this optical fiber positioning device can prevent the holder from being attracted by a magnetic force to another member different from the second magnetic portion. Therefore, in this optical fiber positioning device, when the holder is pulled toward the positioning portion by the magnetic force of the second magnetic portion, it is possible to further prevent the holder from stopping before being pressed against the positioning portion.

As described above, the present invention provides an optical fiber positioning device that can easily position and fix a portion of an optical fiber.

1 is a diagram schematically showing an optical fiber positioning device according to a first embodiment of the present invention; FIG. 2 schematically shows a cross-section of the optical fiber positioning device taken along line II-II of FIG. 1; FIG. 2 schematically shows the holder shown in FIG. 1; FIG. FIG. 4 is a diagram schematically showing a cross section of the holder taken along line IV-IV of FIG. 3; Figure 2 schematically shows the base shown in Figure 1; It is a figure which shows roughly the intensity|strength distribution of the magnetic field on the surface containing the mounting surface by a 2nd magnetic part. FIG. 2 shows an optical fiber positioning device according to a second embodiment of the present invention in a manner similar to that of FIG. 1; Figure 8 shows the base shown in Figure 7 in a manner similar to Figure 3; It is a figure which shows roughly the intensity|strength distribution of the magnetic field on the surface containing the mounting surface by a 1st magnetic part. Figure 6 shows a base according to a third embodiment of the invention in a manner similar to Figure 5; 11 is a view of the base shown in FIG. 10 viewed from another direction; FIG. It is a figure which shows roughly the intensity|strength distribution of the magnetic field on the surface containing the mounting surface by a 2nd magnetic part. FIG. 4 shows an optical fiber positioning device according to a fourth embodiment of the present invention in a manner similar to that of FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of an optical fiber positioning device according to the present invention will be described in detail below with reference to the drawings. The embodiments illustrated below are intended to facilitate understanding of the present invention, and are not intended to limit and interpret the present invention. The present invention can be modified and improved without departing from its spirit. Note that in the drawings referred to below, the dimensions of each member may be changed to facilitate understanding.

(First embodiment)
FIG. 1 is a diagram schematically showing an optical fiber positioning device according to a first embodiment of the present invention, and is a plan view of a mounting surface to be described later. FIG. 2 is a schematic cross-sectional view of the optical fiber positioning device taken along line II-II of FIG. 1 and 2 also show part of the optical fiber. As shown in FIGS. 1 and 2, the optical fiber positioning device 1 of this embodiment includes a holder 10 and a base 30 as main components. The holder 10 is a member that holds a portion of the optical fiber 2 and is mounted on the mounting surface 31S of the base 30 .

FIG. 3 is a diagram schematically showing the holder 10 shown in FIG. 1, and is a diagram of the holder 10 viewed from the mounting surface 31S side of the base 30. As shown in FIG. FIG. 4 is a diagram schematically showing a cross section of the holder 10 taken along line IV-IV of FIG. A part of the optical fiber 2 is also shown in FIGS. As shown in FIGS. 3 and 4, the holder 10 of this embodiment includes a first gripping piece 11, a second gripping piece 12, two guide shafts 13, a shaft 14, a shaft support portion 15, 2 It includes two coil springs 16 and a first magnetic portion 20 .

The holder 10 holds a portion of the optical fiber 2 by sandwiching the portion of the optical fiber 2 between the first gripping piece 11 and the second gripping piece 12 . In this embodiment, the optical fiber 2 held by the holder 10 is a bare optical fiber consisting of a core and a clad. However, the optical fiber 2 held by the holder 10 is not particularly limited. The optical fiber 2 may be, for example, an optical fiber in which the outer periphery of a bare optical fiber is surrounded by a coating layer.

In the present embodiment, the first gripping piece 11 is a substantially rectangular prism-shaped member elongated in a predetermined direction. The outer peripheral surface of the first grip piece 11 consists of a surface 11a, a back surface 11b substantially parallel to the surface 11a, and two side surfaces 11c and 11d connected to the surface 11a and the back surface 11b. These two side surfaces 11c and 11d are generally parallel. Also, the second gripping piece 12 is a substantially rectangular prism-shaped member elongated in a direction substantially parallel to the longitudinal direction of the first gripping piece 11 . The outer peripheral surface of the second grip piece 12 consists of a surface 12a, a back surface 12b substantially parallel to the surface 12a, and two side surfaces 12c and 12d connected to the surface 12a and the back surface 12b. The two side surfaces 12c, 12d are substantially parallel. The first gripping piece 11 and the second gripping piece 12 are arranged such that the side surface 11c of the first gripping piece 11 and the side surface 12c of the second gripping piece 12 face each other. The back surface 11b of the first gripping piece 11 and the back surface 12b of the second gripping piece 12 are positioned substantially on the same plane. One end surface 11e in the longitudinal direction of the first gripping piece 11 and one end surface 12e in the longitudinal direction of the second gripping piece 12 are positioned substantially on the same plane. Further, the other end surface 11f of the first gripping piece 11 in the longitudinal direction and the other end surface 12f of the second gripping piece 12 in the longitudinal direction are located substantially on the same plane.

The 1st magnetic part 20 is a member containing a magnetic body. Materials that constitute the magnetic body include, for example, those containing iron, cobalt, nickel, and the like. The first magnetic part 20 of the present embodiment is a member containing a magnetic material, but is not a magnet. The first magnetic part 20 is a plate-shaped member that extends in a direction substantially parallel to the back surface 11 b of the first gripping piece 11 and elongated in a direction substantially parallel to the longitudinal direction of the first gripping piece 11 . The first magnetic part 20 is accommodated in a groove 11G formed in the back surface 11b of the first gripping piece 11 and fixed to the first gripping piece 11 . The first magnetic portion 20 is not located outside the surface including the back surface 11b of the first gripping piece 11 and does not protrude from the surface including the back surface 11b of the first gripping piece 11 . The shape and attachment position of the first magnetic part 20 are not particularly limited. For example, the first magnetic part 20 may be embedded in the first gripping piece 11 or may be attached to the second gripping piece 12 .

Further, on the side surface 11c of the first gripping piece 11, a plurality of sets of a pair of projections 11P projecting toward the second gripping piece 12 are provided at predetermined intervals in the longitudinal direction of the first gripping piece 11. ing. FIG. 3 shows a case where six pairs of protrusions 11P are provided. One of the pair of protrusions 11P is located on the front surface 11a side, and the other is located on the back surface 11b side. The back surface 11b side surface of the projection 11P located on the front surface 11a side is inclined from the back surface 11b side toward the front surface 11a side so as to approach the second gripping piece 12 . The surface of the projection 11P located on the back surface 11b side on the surface 11a side is inclined so as to approach the second gripping piece 12 from the surface 11a side toward the back surface 11b side. A notch 12N corresponding to the pair of projections 11P is formed in the side surface 12c of the second gripping piece 12. As shown in FIG.

The two guide shafts 13 are cylindrical members extending in a direction substantially perpendicular to the longitudinal direction of the first gripping piece 11 and substantially parallel to the back surface 11b. Through holes extending from one side surface 11c to the other side surface 11d are provided on one side and the other side of the first gripping piece 11 in the longitudinal direction, and the guide shafts 13 are inserted into these through holes. One end of each guide shaft 13 is fixed to the second grip piece 12 . On the other hand, the other end of each guide shaft 13 is fixed to a shaft support 15 . The first grip piece 11 is movable along the guide shaft 13 .

The shaft support portion 15 of the present embodiment is a substantially square prism-shaped member elongated in a direction substantially parallel to the longitudinal direction of the first gripping piece 11 . The other end of each guide shaft 13 is fixed to the shaft support 15 as described above. The length of the shaft support portion 15 is shorter than the length of the first gripping piece 11 . In the longitudinal direction of the first gripping piece 11 , both ends of the shaft support portion 15 are not located outside both end surfaces 11 e and 11 f of the first gripping piece 11 . Further, the shaft support portion 15 is located closer to the front surface 11 a than the rear surface 11 b of the first gripping piece 11 .

Two coil springs 16 are arranged between the shaft support 15 and the first grip piece 11 . Specifically, each coil spring 16 is arranged with the guide shaft 13 inserted therein. One end of each coil spring 16 contacts the side surface 11 d of the first gripping piece 11 , and the other end of each coil spring 16 contacts the surface of the shaft support portion 15 on the first gripping piece 11 side. The elastic force of these coil springs 16 acts on the first gripping piece 11 so as to move the first gripping piece 11 along the guide shaft 13 toward the second gripping piece 12 side. In other words, these coil springs 16 are biasing members that bias the first gripping piece 11 toward the second gripping piece 12 side.

The shaft 14 is a cylindrical member extending in a direction substantially parallel to the extending direction of the guide shaft 13 . A through hole penetrating from one side surface 12c to the other side surface 12d is provided at or near the center in the longitudinal direction of the second gripping piece 12, and the shaft 14 is inserted into this through hole. One end of the shaft 14 is fixed to the first grip piece 11 . The other end of the shaft 14 protrudes from the opening of the through hole of the second gripping piece 12 on the side opposite to the first gripping piece 11 side, and the outer diameter of the other end is made larger than that of the other portions. By pushing the shaft 14 toward the first gripping piece 11 into the through hole of the second gripping piece 12, the first gripping piece 11 is moved along the guide shaft 13 in a direction away from the second gripping piece 12. be able to.

The material forming the first grip piece 11, the second grip piece 12, the two guide shafts 13, the shaft 14, and the shaft support portion 15 is less likely to be magnetized than the material forming the first magnetic portion 20. is preferred. Examples of such materials include aluminum and resin.

In the holder 10 configured as described above, a portion of the optical fiber 2 is positioned between the side surface 11c of the first gripping piece 11 and the side surface 12c of the second gripping piece 12, and the pair of projections 11P on the first gripping piece 11 , along the longitudinal direction of the first gripping piece 11 . As described above, the first gripping piece 11 is urged by the elastic force of the coil spring 16 to move along the guide shaft 13 toward the second gripping piece 12 . Therefore, the side surface 11c of the first gripping piece 11 and the side surface 12c of the second gripping piece 12 are in contact with the outer peripheral surface of the optical fiber 2, and a part of the optical fiber 2 is held between the first gripping piece 11 and the second gripping piece 12. and the holder 10 holds a part of the optical fiber 2 .

FIG. 5 is a diagram schematically showing the base 30 shown in FIG. 1, and is a plan view of the mounting surface 31S. As shown in FIG. 5, the base 30 in this embodiment includes a body portion 31, two pins 32a and 32b as positioning portions, a first guide portion 33, a second guide portion 34, a second magnetic a portion 40;

The body portion 31 is a member having the mounting surface 31S on which at least part of the holder 10 is mounted. In this embodiment, the main body part 31 is a substantially rectangular parallelepiped member, one outer surface of which is a mounting surface 31S, and the mounting surface 31S is substantially flat.

The two pins 32a and 32b as positioning portions are members with which a portion of the holder 10 abuts. As shown in FIG. 5, the pins 32a and 32b of the present embodiment are cylindrical members protruding from the mounting surface 31S in a direction substantially perpendicular to the mounting surface 31S, and are formed integrally with the main body portion 31. be. The distance between the two pins 32a and 32b in the inward direction of the mounting surface 31S is made larger than the distance between the two guide shafts 13 in the holder 10 and smaller than the length of the first gripping piece 11 in the holder 10 in the longitudinal direction. It is said that The area of the mounting surface 31S on one side is larger than the area of the mounting surface 31S on the other side with respect to the reference plane RP passing through the two pins 32a and 32b and perpendicular to the mounting surface 31S. Then, as shown in FIGS. 1 and 2, the holder 10 holding a part of the optical fiber 2 is mounted on one side of the mounting surface 31S with respect to the reference plane RP. The rear surface 11b of the first gripping piece 11 and the rear surface 12b of the second gripping piece 12 of the holder 10 are in contact with the mounting surface 31S. Also, the two pins 32a and 32b abut on the side surface 11d of the first gripping piece 11 in the holder 10 placed on the placement surface 31S. In this state, the longitudinal direction of the portion of the optical fiber 2 held by the holder 10 is substantially parallel to the direction connecting the two pins 32a and 32b. Also, it can be understood that the two pins 32a and 32b are in contact with two different locations in the longitudinal direction of the optical fiber 2 held by the holder 10 of the holder 10 .

As shown in FIG. 5, the first guide portion 33 of the present embodiment is a plate-shaped member extending in a direction substantially perpendicular to the direction connecting the two pins 32a and 32b and in a direction substantially perpendicular to the mounting surface 31S. It is said that The first guide portion 33 is provided on the placement surface 31S on the side opposite to the side of the other pin 32b from the one pin 32a in the direction connecting the two pins 32a and 32b. The surface of the first guide portion 33 on the one pin 32a side is substantially perpendicular to the direction connecting the two pins 32a and 32b. The distance from the end of the first guide portion 33 in the direction substantially perpendicular to the mounting surface 31S to the mounting surface 31S is from the rear surface 11b of the first gripping piece 11 of the holder 10 to the outer peripheral surface of the optical fiber 2 held by the holder 10. is smaller than the distance to The first guide portion 33 is formed integrally with the body portion 31 .

Let the 2nd guide part 34 of this embodiment be a plate-shaped member extended in the direction substantially perpendicular|vertical to the mounting surface 31S. The second guide portion 34 is provided on the mounting surface 31S on the side opposite to the one pin 32b from the other pin 32b in the direction connecting the two pins 32a and 32b. The second guide portion 34 includes a parallel portion 34a extending in a direction substantially parallel to the extending direction of the first guide portion 33, and an inclined portion 34b connected to one end of the parallel portion 34a. The inclined portion 34b is perpendicular to the direction connecting the two pins 32a and 32b and approaches the first guide portion 33 in a direction approaching the two pins 32a and 32b from one side based on the reference plane RP. It is slanted so that The second guide portion 34 is formed integrally with the body portion 31 .

As shown in FIG. 1, when the mounting surface 31S is viewed in plan, a mounting surface is provided between the first guide portion 33 and the second guide portion 34 in the direction connecting the two pins 32a and 32b. A part of the holder 10 placed on 31S is located. Specifically, a portion of the first gripping piece 11 of the holder 10 is positioned between the parallel portion 34a of the first guide portion 33 and the second guide portion 34 in the direction connecting the two pins 32a and 32b. ing. In addition, in the direction connecting the two pins 32a and 32b, between the first guide portion 33 and the inclined portion 34b of the second guide portion 34, the other part of the first gripping piece 11 of the holder 10 and the second gripping piece 11 are placed. Piece 12 is located. The pin 32a side surface of the first guide portion 33 is generally parallel to the end surface 11f of the first gripping piece 11 and the end surface 12f of the second gripping piece 12 . The pin 32b side surface of the parallel portion 34a of the second guide portion 34 is substantially parallel to the end surface 11e of the first gripping piece 11 . In addition, the second guide portion 34 may not have the parallel portion 34a, and may not have the inclined portion 34b.

It is preferable that the material forming the main body portion 31 , the pins 32 a and 32 b , the first guide portion 33 , and the second guide portion 34 be less magnetized than the material forming the first magnetic portion 20 . Examples of such materials include aluminum and resin.

The second magnetic part 40 is a member containing a magnetic material, and is not arranged on the holder 10 side with respect to the placement surface 31S. Materials that constitute the magnetic body include, for example, those containing iron, cobalt, nickel, and the like. As shown in FIGS. 1, 2, and 5, the second magnetic portion 40 of this embodiment is a plurality of magnets 41 embedded in the body portion 31. As shown in FIGS. That is, the plurality of magnets 41 that are the second magnetic portion 40 are arranged on the side opposite to the holder 10 with respect to the placement surface 31S. The direction of magnetization of these magnets 41 is substantially perpendicular to the inner direction of the mounting surface 31S. The magnets 41 may be permanent magnets or electromagnets, and the number of magnets 41 is not limited. In this embodiment, the number of magnets 41 is three, and these magnets 41 are permanent magnets having approximately the same magnetic force. These magnets 41 are arranged in parallel in the direction connecting the two pins 32a and 32b, and are not exposed on the placement surface 31S. Further, the distances between the magnets 41 and the mounting surface 31S are substantially the same, and the magnets 41 and the first magnetic portion 20 overlap each other when the mounting surface 31S is viewed from above. In addition, the second magnetic part 40 may not be arranged on the holder 10 side with respect to the mounting surface 31S. For example, the magnet 41, which is the second magnetic part 40, may be exposed on the mounting surface 31S, or the magnet 41 may constitute a part of the mounting surface 31S.

In the present embodiment, the first magnetic portion 20 and the magnet 41 are attracted to each other by the magnetic force of the magnet 41, which is the second magnetic portion 40, and the holder 10 is pressed against the mounting surface 31S and the two pins 32a and 32b. 10 is fixed to the base 30 . That is, part of the optical fiber 2 held by the holder 10 is fixed to the base 30 via the holder 10 . Here, the component along the mounting surface 31S of the force acting on the first magnetic portion 20 due to the magnetic force of the magnet 41 is the force that presses the holder 10 against the two pins 32a and 32b, and the direction of this force is , is substantially perpendicular to the direction connecting the two pins 32a and 32b. That is, the first magnetic portion 20 and the second magnetic portion 40 of the holder 10 are arranged so that the direction of the force pressing the holder 10 against the two pins 32a and 32b is substantially perpendicular to the direction connecting the two pins 32a and 32b. Three magnets 41 are arranged. Moreover, these three magnets 41 overlap the holder 10 when the mounting surface 31</b>S is viewed from above.

FIG. 6 is a diagram schematically showing the intensity distribution of the magnetic field on the surface including the mounting surface 31S by the second magnetic part 40. As shown in FIG. Specifically, FIG. 6A is a plan view of the intensity distribution of this magnetic field, and is a plan view of the placement surface 31S. FIG. 6(B) is a diagram schematically showing the intensity distribution of this magnetic field along the straight line SL1 in FIG. 6(A). In addition, in FIG. 6A, the strength distribution of the magnetic field is indicated by a one-dot chain line. In addition, in FIG. 6A, the first magnetic portion 20 is indicated by dotted lines, and the base 30 is also indicated. A straight line SL1 in FIG. 6B passes through the center of one magnet 41 and is substantially parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b. In the magnetic field intensity distribution MD1 shown in FIG. 6A, the area AR1 has the highest magnetic field intensity, and the magnetic field intensity decreases in the order of the area AR2, the area AR3, and the area AR4. The region AR1 having the highest magnetic field strength is, for example, a region where the magnetic field strength in the magnetic field strength distribution MD1 is 0.99 times or more the maximum strength in the magnetic field strength distribution MD1. In this embodiment, part of the area AR1 overlaps the first magnetic part 20 when the mounting surface 31S is viewed from above. The area AR1 is positioned on the side of the pressing force from the outer edge of the outer edge of the first magnetic portion 20 opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. In addition, the area of the region AR1 that does not overlap with the first magnetic section 20 is larger than the area that overlaps with the first magnetic section 20 . The area of the portion where the region AR1 and the first magnetic portion 20 overlap decreases as the holder 10 moves in the direction opposite to the direction of the pressing force. Further, as shown in FIG. 6B, in the magnetic field intensity distribution MD1 of the present embodiment, the magnetic field intensity decreases. The number of magnetic flux lines generated by the magnet 41 passing through the first magnetic portion 20 and the second magnetic portion 40 in the state where the holder 10 is pressed against the two pins 32a and 32b is It is greater than the number of magnetic flux lines generated by the magnet 41 passing through the first magnetic portion 20 and the second magnetic portion 40 when the holder 10 is separated from the two pins 32a and 32b in the direction opposite to the force direction. The region AR1 is elongated in a direction generally parallel to the longitudinal direction of the first gripping piece 11 of the holder 10, and is elongated in a direction generally parallel to the longitudinal direction of the portion of the optical fiber 2 held by the holder 10. It is scale.

As described above, the positioning device 1 for the optical fiber 2 of this embodiment includes the holder 10 and the base 30 . The holder 10 has a first magnetic portion 20 containing a magnetic material and holds a portion of the optical fiber 2 . The base 30 has a second magnetic portion 40 containing a magnetic material, a mounting surface 31S on which at least part of the holder 10 is mounted, and two pins 32a and 32b as positioning portions with which the holder 10 abuts. The second magnetic portion 40 is not arranged on the holder 10 side with respect to the mounting surface 31S. The second magnetic portion 40 of the first magnetic portion 20 and the second magnetic portion 40 is the magnet 41 . The first magnetic portion 20 and the magnet 41 are attracted to each other by the magnetic force of the magnet 41, so that the holder 10 is pressed against the mounting surface 31S and the two pins 32a and 32b.

In the positioning device 1 for the optical fiber 2 of the present embodiment, the holder 10 is pressed against the mounting surface 31S and the two pins 32a and 32b by attracting the first magnetic portion 20 and the magnet 41 to each other due to the magnetic force of the magnet 41. . For this reason, the positioning device 1 for the optical fiber 2 of this embodiment is parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b, out of the direction perpendicular to the mounting surface 31S and the direction inside the mounting surface 31S. The optical fiber 2 can be fixed while being positioned in any direction. Further, according to the positioning device 1 for the optical fiber 2 of the present embodiment, the holder 10 is positioned at a predetermined distance from the two pins 32a and 32b in the direction opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. Even if the holder 10 is placed on the placement surface 31S while being spaced apart, the holder 10 can be drawn toward the two pins 32a and 32b by the magnetic force and pressed against the two pins 32a and 32b. Therefore, even if the holder 10 is placed on the placement surface 31S in a state in which the holder 10 is deviated from the predetermined position, the positioning device 1 for the optical fiber 2 of the present embodiment positions and fixes a part of the optical fiber 2. can. Therefore, the positioning device 1 for the optical fiber 2 of this embodiment positions and fixes a part of the optical fiber 2 more easily than the case where a part of the optical fiber 2 is directly carried to the positioning position and fixed. obtain. In addition, in the positioning device 1 for the optical fiber 2 of the present embodiment, the magnet 41, which is the second magnetic portion 40, is not arranged on the holder 10 side with respect to the mounting surface 31S, but is arranged on the side opposite to the holder 10 side. ing. When the magnet 41 that is the second magnetic part 40 is arranged on the holder 10 side with respect to the mounting surface 31S, the area where the magnet 41 can be arranged does not overlap the holder 10 when the mounting surface 31S is viewed from above. area. However, if the magnets 41 are not arranged on the holder 10 side with respect to the mounting surface 31S, the magnets 41 can also be arranged in a region overlapping the holder 10 when the mounting surface 31S is viewed from above. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, the magnet 41 is arranged on the holder 10 side with respect to the mounting surface 31S. You can expand the range you can pull. Further, in the positioning device 1 for the optical fiber 2 of this embodiment, the number is a magnet 41 passing through the first magnetic portion 20 and the second magnetic portion 40 in a state in which the holder 10 is separated from the two pins 32a and 32b in the direction opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. is greater than the number of magnetic flux lines due to Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, when the holder 10 is drawn toward the two pins 32a and 32b by magnetic force, the holder 10 does not move before the holder 10 is pressed against the two pins 32a and 32b. You can prevent it from stopping.

In the positioning device 1 for the optical fiber 2 of this embodiment, the magnet 41, which is the second magnetic portion 40, is not exposed on the mounting surface 31S. Therefore, the positioning device 1 for the optical fiber 2 of the present embodiment can suppress formation of a step on the mounting surface 31S compared to the case where the magnet 41 is exposed on the mounting surface 31S. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, when the holder 10 is drawn toward the two pins 32a and 32b by magnetic force, the holder 10 does not move before the holder 10 is pressed against the two pins 32a and 32b. Stopping can be suppressed more.

Here, as described above, when the mounting surface 31S is viewed from above, the mounting surface 31S is positioned between the first guide portion 33 and the second guide portion 34 in the direction connecting the two pins 32a and 32b. A part of the holder 10 placed on the . That is, a portion of the holder 10 is located between the first guide portion 33 and the second guide portion 34 in the direction perpendicular to the direction of force pressing the holder 10 against the two pins 32a and 32b. For this reason, the positioning device 1 for the optical fiber 2 of the present embodiment uses the first guide portion 33 and the second guide portion 34 so that the two pins 32a and 32b are pressed against each other in the direction of the mounting surface 31S. Movement of the holder 10 in the vertical direction can be restricted. In other words, it can be understood that the first guide portion 33 and the second guide portion 34 of the base 30 are guide portions that restrict such movement of the holder 10 . The positioning device 1 for the optical fiber 2 of the present embodiment positions the optical fiber 2 within a predetermined range in the direction perpendicular to the direction of the force pressing the holder 10 against the pins 32a and 32b in the mounting surface 31S. The optical fiber 2 can be fixed in a state of being regulated to .

In the positioning device 1 for the optical fiber 2 of this embodiment, the second guide portion 34 has an inclined portion 34b. The inclined portion 34b is perpendicular to the direction connecting the two pins 32a and 32b and approaches the first guide portion 33 in a direction approaching the two pins 32a and 32b from one side based on the reference plane RP. It is slanted so that That is, the inclined portion 34b is inclined away from the first guide portion 33 in the direction opposite to the direction of the force pressing the holder against the two pins 32a and 32b. For this reason, the positioning device 1 for the optical fiber 2 of the present embodiment can draw the holder 10 toward the two pins 32a and 32b by magnetic force and widen the range in which the two pins 32a and 32b can be abutted. . Therefore, the positioning device 1 for the optical fiber 2 of this embodiment can more easily position and fix a part of the optical fiber 2 .

From the standpoint of preventing the holder 10 from moving away from the mounting surface 31S, the magnetization direction of the magnets 41 of the second magnetic portion 40 is preferably non-parallel to the inner direction of the mounting surface 31S. It is more preferable that the direction is perpendicular to the inward direction of the placement surface 31S. Also, from the viewpoint of suppressing the holder 10 from separating from the two pins 32a and 32b, the direction of magnetization in the magnet 41 of the second magnetic part 40 is preferably a direction non-perpendicular to the inward direction of the mounting surface 31S. , the direction parallel to the inner direction of the mounting surface 31S and parallel to the direction of the force pressing the holder 10 against the two pins 32a and 32b.

Further, even if the direction of magnetization of the magnet 41 is substantially perpendicular to the mounting surface 31S, the thickness of the magnet 41 of the second magnetic portion 40 in the direction perpendicular to the mounting surface 31S is sufficient. By increasing the thickness, the range in which the holder 10 can be attracted to the two pins 32a and 32b by the magnetic force can be widened. On the other hand, when the thickness of the magnet 41 in the direction perpendicular to the mounting surface 31S is smaller than the above-described sufficient thickness, the direction of magnetization of the magnet 41 is set to the inner direction of the mounting surface 31S and the holder 10 is arranged between the two pins 32a and 32a. By being generally parallel to the direction of the force pressing against 32b, the range over which the magnetic force can pull the holder 10 toward the two pins 32a, 32b can be increased. The sufficient thickness mentioned above is a thickness determined according to the mass of the holder 10 and the like.

(Second embodiment)
Next, a second embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8. FIG. Constituent elements that are the same as or equivalent to those of the first embodiment are denoted by the same reference numerals, and overlapping descriptions will be omitted unless specifically described.

The positioning device 1 for the optical fiber 2 of the present embodiment differs from the optical fiber 2 of the first embodiment in that the first magnetic portion 20 of the holder 10 is a magnet and the second magnetic portion 40 of the base 30 is not a magnet. It differs from the fiber 2 positioning device 1 .

FIG. 7 is a diagram showing the positioning device 1 for the optical fiber 2 according to this embodiment in the same manner as in FIG. The first magnetic portion 20 of the holder 10 of this embodiment is a plate-like permanent magnet elongated in a direction substantially parallel to the longitudinal direction of the first gripping piece 11 . And the 1st magnetic part 20 is accommodated in the groove|channel 11G formed in the back surface 11b of the 1st holding piece 11, and is fixed to the 1st holding piece 11 like 1st Embodiment. Further, as in the first embodiment, the first magnetic portion 20 is not located outside the surface including the back surface 11b of the first gripping piece 11, and is positioned from the surface including the back surface 11b of the first gripping piece 11. not prominent. The direction of magnetization of the first magnetic portion 20 in the state where the holder 10 is placed on the placement surface 31S is substantially perpendicular to the inner direction of the placement surface 31S.

FIG. 8 is a view of the base shown in FIG. 7 in a manner similar to that of FIG. As shown in FIGS. 7 and 8, the second magnetic portion 40 of the present embodiment is a plate-like member extending substantially parallel to the mounting surface 31S and elongated in the direction connecting the two pins 32a and 32b. be. The second magnetic part 40 is a member containing a magnetic material, but is not a magnet. The second magnetic portion 40 is embedded in the body portion 31 as in the first embodiment. The second magnetic portion 40 is arranged on the side of the two pins 32a and 32b with respect to the first magnetic portion 20 when the mounting surface 31S is viewed from above. Further, when the mounting surface 31S is viewed in plan, the second magnetic portion 40 and the first magnetic portion 20 do not overlap each other.

In this embodiment, the first magnetic portion 20 and the second magnetic portion 40 are attracted to each other by the magnetic force of the first magnetic portion 20, which is a magnet, and the holder 10 is pressed against the mounting surface 31S and the two pins 32a and 32b. , and the holder 10 is fixed to the base 30 . That is, a portion of the optical fiber 2 held by the holder 10 is fixed to the base 30 via the holder 10 as in the first embodiment. Moreover, the direction of the force that presses the holder 10 against the two pins 32a and 32b by the magnetic force of the first magnetic portion 20, which is a magnet, is substantially perpendicular to the direction that connects the two pins 32a and 32b. That is, the first magnetic portion 20 of the holder 10 and the second magnetic portion of the base 30 are arranged such that the direction of the force pressing the holder 10 against the two pins 32a and 32b is substantially perpendicular to the direction connecting the two pins 32a and 32b. 40 are arranged.

FIG. 9 is a diagram schematically showing the intensity distribution of the magnetic field on the surface including the mounting surface 31S by the first magnetic section 20. As shown in FIG. Specifically, FIG. 9A is a plan view of the intensity distribution of this magnetic field, and is a plan view of the placement surface 31S. FIG. 9(B) is a diagram schematically showing the intensity distribution of this magnetic field along the straight line SL2 in FIG. 9(A). In addition, in FIG. 9A, the strength distribution of the magnetic field is indicated by a one-dot chain line. Further, in FIG. 9A, the first magnetic portion 20 is indicated by dotted lines, and the base 30 is also indicated. A straight line SL2 in FIG. 9B passes through the first magnetic portion 20 and is substantially parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b. In the magnetic field intensity distribution MD2 shown in FIG. 9A, the area AR21 has the highest magnetic field intensity, and the magnetic field intensity decreases in the order of the area AR22, the area AR23, and the area AR24. In addition, in FIG. 9A, since the outer edge of the area AR21 and the outer edge of the first magnetic part 20 substantially overlap, the illustration of the outer edge of the area AR21 is omitted. The region AR21 with the highest magnetic field strength is, for example, a region where the magnetic field strength in the magnetic field strength distribution MD2 is 0.99 times or more the maximum strength in the magnetic field strength distribution MD2. In this embodiment, the area AR21 does not overlap the second magnetic section 40. As shown in FIG. In addition, the second magnetic portion 40 is located on the direction side of the force that presses the holder 10 against the two pins 32a and 32b with respect to the area AR21. The two pins 32a and 32b are located on the direction side of the force pressing the holder 10 against the two pins 32a and 32b with the area AR21 as a reference. Further, as shown in FIG. 9B, in the magnetic field intensity distribution MD1 of the present embodiment, the magnetic field intensity decreases from the region AR21 toward the direction of the force pressing the holder 10 against the two pins 32a and 32b. . The number of magnetic flux lines generated by the first magnetic part 20 passing through the first magnetic part 20 and the second magnetic part 40 in a state in which the holder 10 is pressed against the two pins 32a and 32b is When the holder 10 is separated from the two pins 32a and 32b in the direction opposite to the direction of the force pressing against 32b, the number of magnetic flux lines generated by the first magnetic portion 20 passing through the first magnetic portion 20 and the second magnetic portion 40 is larger than the number of magnetic flux lines. It is said that The region AR21 is elongated in a direction generally parallel to the longitudinal direction of the first gripping piece 11 of the holder 10, and is elongated in a direction generally parallel to the longitudinal direction of the portion of the optical fiber 2 held by the holder 10. It is scale. Note that the second magnetic portion 40 may be positioned on the direction side of the force that presses the holder 10 against the two pins 32a and 32b with the two pins 32a and 32b as a reference. Moreover, the second magnetic portion 40 and the area AR21 may be located on the direction side of the force that presses the holder 10 against the two pins 32a and 32b with the two pins 32a and 32b as a reference.

As in the first embodiment, the positioning device 1 for the optical fiber 2 of the present embodiment has the holder 10 mounted on the two pins 32a and 32b in the direction perpendicular to the mounting surface 31S and the inner direction of the mounting surface 31S. The optical fiber 2 can be fixed with positioning in a direction parallel to the direction of the pressing force. Further, in the positioning device 1 for the optical fiber 2 of this embodiment, as in the first embodiment, the holder 10 is moved between the two pins 32a and 32b in the direction opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. Even if the holder 10 is placed on the placement surface 31S at a predetermined distance from 32b, the holder 10 can be drawn toward the two pins 32a and 32b by the magnetic force and pressed against the two pins 32a and 32b. Therefore, even if the holder 10 is placed on the placement surface 31S in a state in which the holder 10 is deviated from the predetermined position, the positioning device 1 for the optical fiber 2 of the present embodiment positions and fixes a part of the optical fiber 2. can. Further, in the positioning device 1 for the optical fiber 2 of the present embodiment, the second magnetic portion 40 is arranged on the side opposite to the holder 10 with respect to the mounting surface 31S. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, compared to the case where the second magnetic portion 40 is arranged on the holder 10 side with the mounting surface 31S as a reference, as in the first embodiment, The range in which the holder 10 can be attracted to the two pins 32a and 32b by the magnetic force can be widened. Further, in the positioning device 1 for the optical fiber 2 of the present embodiment, the magnetic flux generated by the first magnetic portion 20 passing through the first magnetic portion 20 and the second magnetic portion 40 in a state in which the holder 10 is pressed against the two pins 32a and 32b The number of lines is such that when the holder 10 is separated from the two pins 32a and 32b, the first magnetic portion 20 and the second magnetic portion 40 are arranged in the direction opposite to the direction of the force that presses the holder 10 against the two pins 32a and 32b. The number of magnetic flux lines due to the first magnetic part 20 passing therethrough is greater. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, when the holder 10 is pulled toward the two pins 32a and 32b by magnetic force, the holder 10 is moved by the magnetic force before the holder 10 is pressed against the two pins 32a and 32b. Stopping movement can be suppressed.

From the viewpoint of preventing the holder 10 from separating from the mounting surface 31S, it is preferable that the magnetization direction of the first magnetic portion 20, which is a magnet, be non-parallel to the inner direction of the mounting surface 31S. It is more preferable that the direction is perpendicular to the inward direction of the placement surface 31S. Moreover, from the viewpoint of suppressing the holder 10 from separating from the two pins 32a and 32b, the direction of magnetization in the first magnetic portion 20 should be non-perpendicular to the inner direction of the mounting surface 31S and the holder 10 should be separated from the two pins 32a and 32b. More preferably, the direction is parallel to the direction of the mounting surface 31S and parallel to the direction of the force pressing the holder 10 against the two pins 32a and 32b.

Further, even if the direction of magnetization of the first magnetic portion 20 is substantially perpendicular to the mounting surface 31S, the thickness of the first magnetic portion 20 in the direction perpendicular to the mounting surface 31S is sufficiently thick. By doing so, the range in which the holder 10 can be attracted to the two pins 32a and 32b by the magnetic force can be widened. On the other hand, when the thickness of the first magnetic portion 20 in the direction perpendicular to the mounting surface 31S is smaller than the above sufficient thickness, the direction of magnetization of the first magnetic portion 20 is changed to the direction inward of the mounting surface 31S and the direction of the holder 10. is substantially parallel to the direction of the force pressing against the two pins 32a, 32b, the range over which the magnetic force can pull the holder 10 toward the two pins 32a, 32b can be increased. The sufficient thickness mentioned above is a thickness determined according to the mass of the holder 10 and the like.

(Third embodiment)
Next, a third embodiment of the present invention will be described in detail with reference to FIGS. 10 and 11. FIG. Constituent elements that are the same as or equivalent to those of the first embodiment are denoted by the same reference numerals, and overlapping descriptions will be omitted unless specifically described.

The positioning device 1 for the optical fiber 2 of the present embodiment differs from the positioning device 1 for the optical fiber 2 of the first embodiment in that the second magnetic portion 40 of the base 30 has the main magnetic portion 40a and the submagnetic portion 40b. different from

FIG. 10 is a diagram showing the base 30 according to this embodiment in a manner similar to that of FIG. FIG. 11 is a view of the base 30 shown in FIG. 10 viewed from another direction, and is a view viewed from the direction connecting the two pins 32a and 32b. As shown in FIGS. 10 and 11, the second magnetic portion 40 of this embodiment has a main magnetic portion 40a and a submagnetic portion 40b. The main magnetic portion 40 a is composed of three magnets 41 a embedded in the body portion 31 . These magnets 41a are permanent magnets having substantially the same magnetic force, are arranged in parallel in the direction connecting the two pins 32a and 32b, and are not exposed on the placement surface 31S. Further, the distances between these magnets 41a and the placement surface 31S are approximately the same.

The secondary magnetic portion 40b is composed of two magnets 41b and one magnet 41c embedded in the main body portion 31 . The two magnets 41b are permanent magnets whose magnetic force is weaker than that of the magnet 41a of the main magnetic portion 40a. These magnets 41b are arranged on the side opposite to the two pins 32a and 32b side of the main magnetic portion 40a in the direction perpendicular to the direction connecting the two pins 32a and 32b, and parallel to the direction connecting the two pins 32a and 32b. It is Further, the distances between these magnets 41b and the mounting surface 31S are substantially the same, and are greater than the distance between the magnets 41a of the main magnetic portion 40a and the mounting surface 31S. Also, one magnet 41c is a permanent magnet whose magnetic force is weaker than that of the magnet 41b. The magnet 41c is arranged on the opposite side of the two pins 32a and 32b than the magnet 41b in the direction perpendicular to the direction connecting the two pins 32a and 32b. Also, the distance between the magnet 41c and the mounting surface 31S is made larger than the distance between the magnet 41b and the mounting surface 31S. When the mounting surface 31S is viewed from above, a straight line passing through the magnet 41c and one magnet 41b passes through the magnet 41a positioned at one end in the arrangement direction among the three magnets 41a of the main magnetic portion 40a. When the mounting surface 31S is viewed from above, a straight line passing through the magnet 41c and the other magnet 41b passes through the magnet 41a positioned at the other end in the arrangement direction among the three magnets 41a of the main magnetic portion 40a. .

Magnets 41a, 41b, and 41c may be electromagnets. Further, the strength, arrangement, and number of the magnets 41a of the main magnetic portion 40a are not particularly limited. Also, the strength, arrangement and number of the magnets 41b and 41c of the submagnetic portion 40b are not particularly limited. For example, each of the main magnetic portion 40a and the submagnetic portion 40b may be composed of one magnet.

Here, on the surface including the mounting surface 31S, the maximum value of the magnetic field intensity of the submagnetic portion 40b is smaller than the maximum value of the magnetic field intensity of the main magnetic portion 40a. That is, the strengths and positions of the magnets 41a, 41b, and 41c are set so that the maximum value of the magnetic field strength of the submagnetic portion 40b is smaller than the maximum value of the magnetic field strength of the main magnetic portion 40a.

Further, in the present embodiment, as in the first embodiment, the first magnetic portion 20 and the second magnetic portion 40 are attracted to each other by the magnetic force of the magnets 41a, 41b, and 41c which are the second magnetic portion 40, and the holder 10 are pressed against the mounting surface 31S and the two pins 32a and 32b, and the holder 10 is fixed to the base 30. As shown in FIG. That is, a portion of the optical fiber 2 held by the holder 10 is fixed to the base 30 via the holder 10 as in the first embodiment. Further, the direction of the force that presses the holder 10 against the two pins 32a, 32b by the magnetic force of the magnets 41a, 41b, 41c, which are the second magnetic part 40, is substantially perpendicular to the direction connecting the two pins 32a, 32b. be. Therefore, the main magnetic portion 40a and the submagnetic portion 40b of the second magnetic portion 40 are arranged in parallel in the order of the submagnetic portion 40b and the main magnetic portion 40a in the direction of the force that presses the holder 10 against the two pins 32a and 32b. I understand that there is.

FIG. 12 is a diagram schematically showing the intensity distribution of the magnetic field on the surface including the mounting surface 31S by the second magnetic part 40. As shown in FIG. Specifically, FIG. 12A is a plan view of the intensity distribution of this magnetic field, and is a plan view of the mounting surface 31S. FIG. 12(B) is a diagram schematically showing the intensity distribution of this magnetic field along the straight line SL3 in FIG. 12(A). In addition, in FIG. 12A, the intensity distribution of the magnetic field is indicated by a dashed line. Further, in FIG. 12(A), the first magnetic portion 20 is indicated by dotted lines, and the base 30 is also indicated. A straight line SL3 in FIG. 12B passes through one magnet 41a of the main magnetic portion 40a and one magnet 41c of the submagnetic portion 40b and is substantially parallel to the direction of the force pressing the holder 10 against the two pins 32a and 32b. be. As shown in FIGS. 12A and 12B, the magnetic field intensity distribution MD3 on the surface including the placement surface 31S of the second magnetic section 40 includes an area AR31, an area AR32, and an area AR33. The area AR31 has the highest magnetic field strength, the area AR32 has a substantially constant magnetic field strength lower than that of the area AR31, and the area AR33 has a substantially constant magnetic field strength lower than that of the area AR32. is. Note that the region AR31 having the highest magnetic field strength is, for example, a region where the magnetic field strength in the magnetic field strength distribution MD3 is 0.99 times or more the maximum strength in the magnetic field strength distribution MD3. In this embodiment, the area AR31 is surrounded by the area AR32, and the area AR32 is surrounded by the area AR33. A part of the area AR31 overlaps the first magnetic part 20 when the mounting surface 31S is viewed from above. However, the area AR31 is positioned on the side of the pressing force from the outer edge of the outer edge of the first magnetic portion 20 opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. The area of the portion where the region AR31 and the first magnetic portion 20 overlap decreases as the holder 10 moves in the direction opposite to the direction of the pressing force. In addition, as shown in FIG. 12B, in the magnetic field intensity distribution MD3 of the present embodiment, in the direction parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b, the magnetic field increases with distance from the region AR31. Gradual decrease in intensity. The number of magnetic flux lines generated by the magnets 41a, 41b, and 41c passing through the first magnetic portion 20 and the second magnetic portion 40 when the holder 10 is pressed against the two pins 32a and 32b is , 32b, the number of magnetic flux lines generated by the magnets 41a, 41b, and 41c passing through the first magnetic portion 20 and the second magnetic portion 40 in a state in which the holder 10 is separated from the two pins 32a and 32b in the direction opposite to the direction of the force pressing the pins 32a and 32b. considered larger.

Even with such a positioning device 1 for the optical fiber 2, a part of the optical fiber 2 can be easily positioned and fixed in the same manner as in the first embodiment.

In addition, in the positioning device 1 for the optical fiber 2 of the present embodiment, as described above, the second magnetic portion 40 has the main magnetic portion 40a made up of the magnet 41a and the submagnetic portion 40b made up of the magnets 41b and 41c. . The main magnetic portion 40a and the submagnetic portion 40b are arranged in parallel in the order of the submagnetic portion 40b and the main magnetic portion 40a in the direction of the force that presses the holder 10 against the two pins 32a and 32b. On the surface including the placement surface 31S, the maximum value of the magnetic field intensity of the submagnetic portion 40b is smaller than the maximum value of the magnetic field intensity of the main magnetic portion 40a. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, the range of the magnetic field of the second magnetic portion 40 is set to 2 times the holder 10 as compared to the case where the second magnetic portion 40 does not have the sub-magnetic portion 40b. It can expand in the direction opposite to the direction of the force pressing on the two pins 32a, 32b. Further, in the positioning device 1 for the optical fiber 2 of the present embodiment, when the holder 10 is drawn toward the two pins 32a and 32b by magnetic force, the magnetic force of the submagnetic portion 40b is applied before the holder 10 is pressed against the two pins 32a and 32b. can prevent the movement of the holder 10 from stopping.

From the viewpoint of suppressing the movement of the holder 10 from stopping due to the magnetic force of the submagnetic portion 40b before the holder 10 is pressed against the two pins 32a and 32b, the direction of the force that presses the holder 10 against the two pins 32a and 32b is preferably smaller than the width W10 of the first magnetic portion in this direction. The strength of the magnetic field between the edge of the area AR32 on the side of the area AR31 and the edge on the side of the area AR33 may be lower than the strength of the magnetic field on the edge on the side of the area AR31 and the edge on the side of the area AR33. However, as in the first embodiment, the magnetic field strength distribution MD3 is a distribution in which the magnetic field strength decreases from the region AR31 toward the direction opposite to the direction of the force pressing the holder 10 against the two pins 32a and 32b. is more preferable.

(Fourth embodiment)
Next, a fourth embodiment of the invention will be described in detail with reference to FIG. Constituent elements that are the same as or equivalent to those of the first embodiment are denoted by the same reference numerals, and overlapping descriptions will be omitted unless specifically described.

FIG. 13 is a diagram showing the optical fiber positioning device according to the present embodiment in the same manner as in FIG. As shown in FIG. 13, the positioning device 1 for the optical fiber 2 of the present embodiment has a second positioning portion 50 in place of the first guide portion 33 of the base 30. It differs from the positioning device 1 .

As shown in FIG. 13 , the second positioning portion 50 of this embodiment has a body portion 51 and magnets 52 . The body portion 51 is a rectangular parallelepiped member elongated in a direction substantially perpendicular to the direction connecting the two pins 32a and 32b. The body portion 51 is provided on the mounting surface 31S on the side opposite to the side of the other pin 32b from the one pin 32a in the direction connecting the two pins 32a and 32b. A surface 51S of the body portion 51 on the one pin 32a side is substantially perpendicular to the direction connecting the two pins 32a and 32b and to the placement surface 31S. The distance from the end of the main body 51 in the direction substantially perpendicular to the mounting surface 31S to the mounting surface 31S is the distance from the rear surface 11b of the first gripping piece 11 of the holder 10 to the outer peripheral surface of the optical fiber 2 held by the holder 10. less than the distance. Further, the body portion 51 is formed integrally with the body portion 31 of the base 30 . An end surface 11f of the first gripping piece 11 and an end surface 12f of the second gripping piece 12 of the holder 10 are in contact with the surface 51S of the body portion 51 . That is, the base 30 of this embodiment has two pins 32a and 32b as positioning portions with which a part of the holder 10 abuts, and a second positioning portion 50 with which another part of the holder 10 abuts. I understand that there is.

The magnet 52 is embedded in the body portion 51 and is not exposed on the surface 51S of the body portion 51 . The magnet 52 may be a permanent magnet, an electromagnet, or composed of a plurality of magnets. The magnet 52 overlaps the first magnetic portion 20 in the direction connecting the two pins 32a and 32b when the mounting surface 31S is viewed from above. Note that the magnet 52 may be exposed on the surface 51S of the body portion 51, and the magnet 52 may constitute a part of the surface 51S of the body portion 51. FIG. Alternatively, the body portion 51 may be the magnet 52 .

In the present embodiment, as in the first embodiment, the first magnetic portion 20 and the second magnetic portion 40 are attracted to each other by the magnetic force of the magnet 41 which is the second magnetic portion 40, and the holder 10 moves between the mounting surface 31S and the mounting surface 31S. It is pressed against two pins 32a, 32b. Thus, the direction of the magnetic force of the magnet 41, which is the second magnetic portion 40, pressing the holder 10 against the two pins 32a and 32b is substantially perpendicular to the direction connecting the two pins 32a and 32b. Further, in the present embodiment, the magnet 52 and the first magnetic portion 20 are attracted to each other by the magnetic force of the magnet 52 of the second positioning portion 50 . Then, the end surface 11 f of the first gripping piece 11 and the end surface 12 f of the second gripping piece 12 of the holder 10 are pressed against the surface 51 S of the main body portion 51 of the second positioning portion 50 . Thus, the direction of the force pressing the holder 10 against the second positioning portion 50 is non-parallel to the direction of the force pressing the holder 10 against the two pins 32a and 32b in the mounting surface 31S inner direction. In this embodiment, the direction of this force is substantially perpendicular to the direction of the force that presses the holder 10 against the two pins 32a and 32b. This force is also less than the force pressing the holder 10 against the two pins 32a, 32b. That is, the direction of the force that presses the holder 10 against the second positioning portion 50 is non-parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b in the mounting surface 31S inner direction. The strength and position of the magnet 52 are set so as to be smaller than the force pressing against the two pins 32a and 32b.

Even with such a positioning device 1 for the optical fiber 2, a part of the optical fiber 2 can be easily positioned and fixed in the same manner as in the first embodiment.

In addition, in the positioning device 1 for the optical fiber 2 of the present embodiment, as described above, the magnet 52 of the second positioning portion 50 and the first magnetic portion 20 attract each other, so that the holder 10 moves toward the second positioning portion 50. pressed against. The direction of the force that presses the holder 10 against the second positioning portion 50 is non-parallel to the direction of the force that presses the holder 10 against the two pins 32a and 32b in the mounting surface 31S inner direction. For this reason, the positioning device 1 for the optical fiber 2 of this embodiment is further positioned in the direction perpendicular to the direction of the force pressing the holder 10 against the two pins 32a and 32b in the mounting surface 31S. The optical fiber 2 can be fixed.

In addition, in the positioning device 1 for the optical fiber 2 of the present embodiment, the force pressing the holder 10 against the second positioning portion 50 is smaller than the force pressing the holder 10 against the two pins 32a and 32b. For this reason, in the positioning device 1 of the optical fiber 2 of the present embodiment, the first magnetic portion 20 and the magnet 52 of the second positioning portion 50 absorb the force of the first magnetic portion 20 and the second magnetic portion 40 attracting each other. It can be greater than the forces that attract each other. Therefore, in the positioning device 1 for the optical fiber 2 of the present embodiment, when the holder 10 is drawn toward the two pins 32a and 32b by magnetic force, the second positioning portion 50 is moved before the holder 10 is pressed against the two pins 32a and 32b. It is possible to prevent the movement of the holder 10 from stopping due to the magnetic force of the magnet 52 .

Further, in the positioning device 1 for the optical fiber 2 of the present embodiment, as shown in FIG. 13, when the mounting surface 31S is viewed from above, the second positioning portion 50 and A portion of the holder 10 placed on the placement surface 31S is located between the second guide portion 34 and the second guide portion 34 . That is, part of the holder 10 is located between the second positioning portion 50 and the second guide portion 34 in the direction perpendicular to the direction of the force pressing the holder 10 against the two pins 32a and 32b. The positioning portion 50 also serves as the first guide portion 33 in the first embodiment. Therefore, the positioning device 1 for the optical fiber 2 of the present embodiment can suppress the movement of the holder 10 moved by the magnetic force in the direction away from the second positioning portion 50, and the holder 10 is pressed against the second positioning portion 50. obtain.

As described above, the present invention has been described using the above embodiments as examples, but the present invention is not limited to these.

For example, in the above embodiment, the positioning device 1 for the optical fiber 2 in which the first magnetic portion 20 or the second magnetic portion 40 is a magnet has been described as an example. However, at least one of the first magnetic portion 20 and the second magnetic portion 40 may be a magnet. For example, the first magnetic portion 20 and the second magnetic portion 40 may be magnets. In this case, when the holder 10 is pressed against the two pins 32a and 32b as positioning portions, the number of magnetic flux lines generated by these magnets passing through the first magnetic portion 20 and the second magnetic portion 40 is determined by positioning the holder 10 between the two pins 32a and 32b. When the holder 10 is separated from the two pins 32a and 32b in the direction opposite to the direction of the force pressing against 32a and 32b, the number of magnetic flux lines by these magnets passing through the first magnetic portion 20 and the second magnetic portion 40 is greater than the number make it From the viewpoint of handleability of the holder 10, it is preferable that only the second magnetic portion 40 of the first magnetic portion 20 and the second magnetic portion 40 is a magnet as in the first embodiment. When only the second magnetic portion 40 is a magnet, it is possible to prevent the holder 10 from being fixed to a member different from the base 30 by the magnetic force, thereby facilitating the handling of the holder 10 . Moreover, in this case, it is possible to prevent the holder 10 from being attracted to another member other than the second magnetic portion 40 by the magnetic force. Therefore, when the holder 10 is drawn toward the two pins 32a and 32b as the positioning portions by the magnetic force of the second magnetic portion 40, the movement of the holder 10 is prevented before the holder 10 is pressed against the two pins 32a and 32b. more controllable.

Further, in the above-described embodiment, the holder 10 that holds a part of the optical fiber 2 by holding the part of the optical fiber 2 between the first gripping piece 11 and the second gripping piece 12 has been described as an example. However, the holder 10 may have the first magnetic portion 20 containing a magnetic material and hold a portion of the optical fiber 2 . For example, the holder 10 may hold a portion of the optical fiber 2 around which a portion of the optical fiber 2 is wound.

Further, in the above embodiment, the base 30 having the two pins 32a and 32b as the positioning portion has been described as an example. However, the positioning portion may be a member with which a part of the holder 10 abuts. For example, the positioning portion may be a member that makes surface contact with the holder 10 or a member that makes point contact with the holder 10 . Further, the positioning portion may be a member that contacts a plurality of portions of the holder 10 or a member that contacts a single portion of the holder 10 .

Further, in the above-described embodiment, the second positioning portion 50 that is in surface contact with the holder 10 has been described as an example. However, the second positioning portion may be a member having a magnet and with which a portion of the holder 10 abuts. For example, the second positioning portion may be a member that makes line contact with the holder 10 or a member that makes point contact with the holder 10 . Also, the second positioning portion may be a member that contacts a plurality of portions of the holder 10 . It may be a member that abuts on one place in the holder 10 .

Further, in the above embodiment, the base 30 having the first guide portion 33 and the second guide portion 34, which are guide portions, has been described as an example. However, the base 30 only needs to have a second magnetic portion 40 containing a magnetic material, a mounting surface 31S on which at least a portion of the holder 10 is mounted, and a positioning portion with which a portion of the holder 10 abuts. . For example, the base 30 may not have the first guide portion 33 and the second guide portion 34 . Also, the base 30 may be integrally formed with another member and may be a part of the other member.

In the above-described embodiment, the first guide portion 33 and the second guide portion 34, which are guide portions, regulate the movement of the holder 10 in the direction perpendicular to the direction of the force pressing the holder 10 against the two pins 32a and 32b. 30 was used as an example. However, the guide portion that regulates the movement of the holder 10 in the direction perpendicular to the direction of the force pressing the holder 10 against the two pins 32a and 32b is not particularly limited. For example, the guide portion may be a rib or groove extending in a direction substantially parallel to the direction of the force pressing the holder 10 against the two pins 32a and 32b and provided on the mounting surface 31S. In this case, on the rear surface 11b of the first gripping piece 11 and the rear surface 12b of the second gripping piece 12, which are the surfaces of the holder 10 that come into contact with the mounting surface 31S, grooves into which the ribs are inserted or grooves are inserted into the grooves. Provide ribs.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, an optical fiber positioning device capable of easily positioning and fixing a part of an optical fiber is provided, and is expected to be used in fields such as optical fiber communication.

Reference Signs List 1 Optical fiber positioning device 2 Optical fiber 10 Holder 20 First magnetic part 30 Base 31S Placement surfaces 32a, 32b Pins (positioning parts)
33... First guide portion (guide portion)
34 ... second guide portion (guide portion)
40 Second magnetic portion 40a Main magnetic portion 40b Secondary magnetic portions 41, 41a, 41b, 41c, 52 Magnet 50 Second positioning portion (another positioning portion)

Claims (7)

a holder having a first magnetic portion containing a magnetic material and holding a portion of the optical fiber;
a base having a second magnetic part containing a magnetic material, a mounting surface on which at least part of the holder is mounted, and a positioning part with which the holder abuts;
with
The second magnetic part is not arranged on the holder side with respect to the mounting surface,
At least one of the first magnetic portion and the second magnetic portion is a magnet,
The first magnetic portion and the second magnetic portion are attracted to each other by the magnetic force of the magnet, whereby the holder is pressed against the mounting surface and the positioning portion,
When the holder is pressed against the positioning portion, the number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion increases in the direction opposite to the direction of the force pressing the holder against the positioning portion. is greater than the number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion when the holder is separated from the positioning portion;
the base further has another positioning portion that has a magnet and that the holder abuts;
The holder is pressed against the another positioning portion by the magnet of the another positioning portion and the first magnetic portion attracting each other,
The direction of the force that presses the holder against the positioning portion is non-parallel to the direction of the force that presses the holder against the positioning portion in the mounting surface direction.
An optical fiber positioning device characterized by: 2. The optical fiber positioning device according to claim 1 , wherein a force pressing said holder against said another positioning portion is smaller than a force pressing said holder against said positioning portion. The second magnetic portion has a main magnetic portion made of a magnet and a sub-magnetic portion made of a magnet,
the main magnetic portion and the submagnetic portion are arranged in parallel in the order of the submagnetic portion and the main magnetic portion in the direction of the force that presses the holder against the positioning portion;
3. The apparatus according to claim 1 , wherein the maximum value of the magnetic field intensity of the secondary magnetic portion is smaller than the maximum value of the magnetic field intensity of the main magnetic portion on a surface including the mounting surface. Optical fiber positioning device. a holder having a first magnetic portion containing a magnetic material and holding a portion of the optical fiber;
a base having a second magnetic part containing a magnetic material, a mounting surface on which at least part of the holder is mounted, and a positioning part with which the holder abuts;
with
The second magnetic part is not arranged on the holder side with respect to the mounting surface,
At least one of the first magnetic portion and the second magnetic portion is a magnet,
The first magnetic portion and the second magnetic portion are attracted to each other by the magnetic force of the magnet, whereby the holder is pressed against the mounting surface and the positioning portion,
When the holder is pressed against the positioning portion, the number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion increases in the direction opposite to the direction of the force pressing the holder against the positioning portion. is greater than the number of magnetic flux lines generated by the magnet passing through the first magnetic portion and the second magnetic portion when the holder is separated from the positioning portion;
The second magnetic portion has a main magnetic portion made of a magnet and a sub-magnetic portion made of a magnet,
the main magnetic portion and the submagnetic portion are arranged in parallel in the order of the submagnetic portion and the main magnetic portion in the direction of the force that presses the holder against the positioning portion;
On a surface including the mounting surface, the maximum value of the magnetic field intensity of the secondary magnetic portion is smaller than the maximum value of the magnetic field intensity of the main magnetic portion.
An optical fiber positioning device characterized by: 5. The optical fiber positioning device according to claim 1, wherein the second magnetic portion is not exposed on the mounting surface. 6. The base further comprises a guide portion for regulating movement of the holder in a direction perpendicular to a direction of force pressing the holder against the positioning portion in the mounting surface direction. The optical fiber positioning device according to any one of Claims 1 to 3 . 7. The optical fiber positioning device according to claim 1, wherein only the second magnetic portion of the first magnetic portion and the second magnetic portion is a magnet.

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