WO2023120481A1 - Fusion splicer - Google Patents

Abstract

A fusion splicer according to one embodiment of the present invention comprises: a base having a main surface in which is formed a V-groove for positioning an optical fiber; a clamp that holds down an optical fiber placed in the V-groove; a first rotation mechanism that enables the clamp to be rotated about a Z-axis that extends along the V-groove; and a second rotation mechanism that enables the clamp to be rotated about an X-axis that is orthogonal to the Z-axis and that extends along the main surface.

Description

fusion splicer

The present disclosure relates to fusion splicers.
This application claims priority based on Japanese Application No. 2021-207384 dated December 21, 2021, and incorporates all the content described in the Japanese Application.

Patent Document 1 describes an optical fiber fusion splicer. An optical fiber fusion splicer includes a base having a plurality of fiber grooves for accommodating optical fibers, and a fiber clamp member for holding the optical fibers accommodated in the fiber grooves. The fiber clamp member has a clamp block. A fiber clamp for pressing an optical fiber is connected to the clamp block via a clamp auxiliary body. The clamp block is vertically movable with respect to the fiber clamp. A clamping spring is provided between the clamping block and the clamping auxiliary body. The pressing load of the optical fiber by the fiber clamp changes according to the height position of the clamp block.

Patent Document 2 describes a fusion splicer for fusion splicing a pair of optical fibers. A fusion splicer includes a fiber holder that holds an optical fiber, a grooved substrate on which the tip portion of the optical fiber is placed, and a fiber clamp member that presses the optical fiber placed on the grooved substrate.

JP 2013-15623 A WO2013/145474

A fusion splicer according to the present disclosure includes a base having a main surface formed with a V-groove for positioning an optical fiber, a clamp for holding the optical fiber placed on the V-groove, and a Z-axis extending along the V-groove. A first rotation mechanism for rotating the clamp about its center and a second rotation mechanism for rotating the clamp about an X-axis orthogonal to the Z-axis and extending along the major surface are provided.

FIG. 1 is a perspective view showing a fusion splicer according to an embodiment. 2 is a perspective view showing the internal structure of the fusion splicer of FIG. 1. FIG. 3 is a perspective view showing the base, clamps and optical fibers of the fusion splicer of FIG. 1; FIG. FIG. 4 is a cross-sectional view showing the base, the clamp, and the optical fiber cut by a plane orthogonal to the extending direction of the optical fiber. FIG. 5 is a perspective view showing the clamp and support member; FIG. 6 is a cross-sectional view showing the clamp, support member and mounting member. FIG. 7 is a view of the clamp, pedestal, and optical fiber viewed along a direction perpendicular to the main plane of the pedestal. FIG. 8 is a vertical cross-sectional view schematically showing a first rotating mechanism and a second rotating mechanism according to a modification. FIG. 9 is a perspective view schematically showing a stopper of a fusion splicer according to a modification.

Especially in recent years, various forms of optical fibers such as flat ribbon cables or intermittent ribbon fibers are sometimes fusion spliced. However, some aspects of the optical fiber may be individually misaligned when placed in the V-groove that positions the optical fiber. The optical fiber placed on the V-groove may adhere to debris generated when the coating of the optical fiber is removed, or dust that has entered from the outside. Debris or dirt can accumulate and cause misalignment of the optical fiber.

An object of the present disclosure is to provide a fusion splicer capable of suppressing axial misalignment.

[Description of Embodiments of the Present Disclosure]
First, the contents of the embodiments of the present disclosure will be listed and described. A fusion splicer according to one embodiment includes (1) a base having a main surface formed with a V-groove for positioning an optical fiber, a clamp for holding the optical fiber placed on the V-groove, and A first rotation mechanism that allows the clamp to rotate about an extending Z-axis, and a second rotation mechanism that allows the clamp to rotate about an X-axis that is orthogonal to the Z-axis and extends along the main surface. Prepare.

This fusion splicer comprises a base having a main surface on which a V-groove is formed, and a clamp for holding the optical fiber placed on the V-groove, the clamp being rotatable by a first rotating mechanism and a second rotating mechanism. It is A first rotation mechanism enables rotation of the clamp about a Z-axis extending along the V-groove. A second rotation mechanism enables rotation of the clamp about an X-axis orthogonal to the Z-axis and extending along the major surface. Since the clamp is rotatable around the Z axis and the X axis, it can flexibly change its posture when holding the optical fiber. Even if there is debris or dust on the main surface of the table, the clamp can hold the optical fiber while avoiding the debris or dust, so that it is possible to properly hold down the optical fiber. Therefore, axial misalignment of the optical fiber can be suppressed.

(2) In (1) above, the first rotating mechanism and the second rotating mechanism may have an integral spherical member. In this case, since the first rotating mechanism and the second rotating mechanism are integral spherical members, the first rotating mechanism and the second rotating mechanism can be realized by a common member, so that the configuration can be simplified. If the first rotating mechanism and the second rotating mechanism have an integral spherical member, the change in posture of the clamp can be further improved, so that the optical fiber can be pressed more appropriately.

(3) In (1) above, the second rotating mechanism may be provided above the first rotating mechanism.

(4) In any one of (1) to (3) above, the fusion splicer may further include a third rotating mechanism that allows the clamp to rotate about the Y-axis perpendicular to the main surface. In this case, in addition to the Z and X axes, the clamp is rotatable about the Y axis extending perpendicular to the main surface of the table. Since the clamp is rotatable about each of the X-, Y-, and Z-axes, it is possible to more flexibly change its posture when holding the optical fiber.

(5) In (4) above, the fusion splicer may include a driving section that rotates the clamp via the third rotating mechanism. In this case, the drive section rotates the clamp around the Y-axis via the third rotation mechanism. Therefore, even if there is debris or dust on the main surface of the table, the rotation can more reliably avoid the debris or dust.

(6) In (4) or (5) above, the fusion splicer may include a limiter that limits rotation of the clamp via the third rotation mechanism to a certain angle or less. . In this case, it is possible to avoid turning the clamp too much around the Y axis.

(7) In any one of the above (1) to (6), the fusion splicer includes a support member that supports the clamp, and in the first rotation mechanism, the clamp extends along the Z-axis at the first position of the support member. It may be rotatable around one axis.

(8) In any one of (1) to (7) above, the fusion splicer includes a support member that supports the clamp, and the support member has a support portion that fits into the clamp and rotatably supports the clamp. You may

(9) In (8) above, the support includes a first support having a first shaft and a second support extending upward from the first support, the second support extending along the X axis. a second shaft extending along the first support, the first support having a hole into which the second shaft is inserted, and a second rotating mechanism comprising the hole and the second shaft good too.

(10) In (4) above, the fusion splicer may include a support member that supports the clamp, and a mounting member to which the support member is mounted, and the mounting member may include the drive unit.

(11) In (3) above, the fusion splicer includes a support member that supports the clamp, and an attachment member to which the support member is attached, and the support member has an arm extending along the Z axis. good too. The arm portion has a first hole recessed from its upper surface, and the mounting member includes a body portion positioned above the arm portion, a first protrusion projecting downward from the body portion, and a clamp for the first protrusion. and a second projecting portion projecting downward from the body portion at the side position. The third rotation mechanism may be configured by the first hole and the second protrusion.

(12) In (4) above, the fusion splicer may include a support member that supports the clamp, and the drive unit may rotate the support member and the clamp around the Y axis.

(13) In any one of (1) to (12) above, the fusion splicer includes a support member that supports the clamp, the support member being a support portion that fits into the clamp and rotatably supports the clamp; A head portion provided above the support portion and an arm portion extending from the head portion along the Z-axis may be provided.

(14) In (13) above, the supporting portion may be rod-shaped extending along the Y-axis perpendicular to the main surface.

(15) In (13) or (14) above, the head portion includes a body portion positioned above the support portion, a first protrusion projecting upward from the body portion, and a head portion projecting from the body portion toward the arm portion. You may have a 2nd protrusion part which carries out.

(16) In any one of (13) to (15) above, the arm portion has an upper surface extending in both the direction in which the Z-axis extends and the direction in which the X-axis extends, and the Y-axis extending perpendicular to the main surface. and a side surface extending in both the direction in which the Z-axis extends.

(17) In any one of (1) to (16) above, the fusion splicer includes a support member that supports the clamp, and an attachment member to which the support member is attached, the attachment member being an arm portion of the support member. a main body positioned above the main body, a first protruding part protruding downward from the main body, a second protruding part protruding downward from the main body at a position on the clamp side of the first protruding part, and an X-axis in the main body and a bar extending along the .

(18) In (17) above, the arm portion has a first hole recessed from the upper surface of the arm portion and a second hole recessed from the side surface of the arm portion and extending along the X axis. The portion may be inserted into the second hole.

(19) In (18) above, the length of the second hole in the direction in which the Y-axis perpendicular to the main surface extends may be longer than the length of the second hole in the direction in which the Z-axis extends.

(20) In (18) or (19) above, the first protrusion may be in contact with the upper surface of the arm, and the second protrusion may be fitted into the first hole of the arm.

[Details of the embodiment of the present disclosure]
A specific example of a fusion splicer according to an embodiment of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same reference numerals are given to the same or corresponding elements, and overlapping descriptions are omitted as appropriate. The drawings may be partially simplified or exaggerated for easy understanding, and the dimensional ratios and the like are not limited to those described in the drawings.

FIG. 1 is a perspective view showing a fusion splicer 1 according to an embodiment. A fusion splicer 1 has a windshield cover 2 on its top. FIG. 2 is a perspective view schematically showing a state in which the windshield cover 2 of the fusion splicer 1 is opened. As shown in FIGS. 1 and 2, the fusion splicer 1 has a box-shaped housing 3 . In the upper part of the housing 3, there are a fusion splicer 4 for fusing optical fibers together, and a heater 5 for heating and contracting a fiber reinforcing sleeve that covers the spliced portion of the fused optical fibers in the fusion splicing section 4. and are provided. The fusion splicer 1 includes a monitor 7 that displays the state of fusion splicing between optical fibers photographed by a microscope (not shown) arranged inside the housing 3 . Further, the fusion splicer 1 includes a power switch 8 for switching on/off the power of the fusion splicer 1, and a connection start switch 9 for performing fusion splicing of optical fibers.

The fusion splicer 4 includes a pair of discharge electrodes 6 for fusion splicing a plurality of optical fibers together, and a pair of optical fiber holders 10 for holding the plurality of optical fibers. For example, in the fusion splicer 1, twelve optical fibers are fusion spliced to other twelve optical fibers. A pair of discharge electrodes 6 fuse a plurality of optical fibers to each other by discharge. The discharge electrode 6 and the optical fiber holder 10 are arranged in this order along the Z-axis direction. The Z-axis direction is the direction in which each of the plurality of optical fibers to be fusion-spliced extends.

FIG. 3 is a cross-sectional perspective view enlarging the periphery of the discharge electrode 6 in the fusion splicer 1. FIG. As shown in FIGS. 2 and 3, the fusion splicer 1 includes a table 11 on which a plurality of optical fibers F to be fusion-spliced are placed, and a clamp 20 for holding the optical fibers F placed on the table 11. Prepare. The base 11 has a main surface 12 on which a plurality of optical fibers F are placed. A plurality of optical fibers F are arranged on the main surface 12 along the X-axis direction that intersects the Z-axis direction. For example, the X-axis direction is an in-plane direction of the main surface 12 and a direction perpendicular to the Z-axis direction. A pair of discharge electrodes 6 are arranged on both sides in the X-axis direction when viewed from the plurality of optical fibers F. As shown in FIG.

FIG. 4 is an enlarged sectional view of the pair of discharge electrodes 6, base 11 and clamp 20. FIG. As shown in FIGS. 3 and 4, the base 11 has a plurality of V-grooves 13 into which the optical fibers F enter on the main surface 12. As shown in FIGS. For example, the fusion splicer 1 includes a support member 40 that supports the clamp 20 . As an example, the support member 40 is made of resin.

The fusion splicer 1 has a first rotating mechanism 1A that allows the clamp 20 to rotate around the Z axis. The first rotation mechanism 1A has, for example, the shaft portion 40b of the support member 40. As shown in FIG. That is, in the first rotation mechanism 1A, the clamp 20 is rotatable about the shaft portion 40b of the support member 40 extending along the Z-axis direction. The clamp 20 is U-shaped when viewed along the X-axis.

For example, the clamp 20 connects the first portion 20d to which one end of the shaft portion 40b is connected, the second portion 20g to which the other end of the shaft portion 40b is connected, and the first portion 20d and the second portion 20g. and a pressing portion 20h. Each of the first portion 20d, the second portion 20g, and the pressing portion 20h is, for example, block-shaped. The pressing portion 20h extends along the Z-axis direction below the shaft portion 40b.

5 is a perspective view showing the clamp 20 and the support member 40. FIG. As shown in FIG. 5, the support member 40 includes, for example, a support portion 41 that enters the clamp 20 and rotatably supports the clamp 20, a head portion 42 that is provided above the support portion 41, and a head portion 42 that extends from the head portion 42. and an arm portion 43 extending along the Z-axis direction. The support portion 41 has, for example, a rod shape extending in the Y-axis direction. The head portion 42 includes a body portion 42b positioned above the support portion 41, a first projection portion 42c projecting upward from the body portion 42b, and a second projection portion 42d projecting from the body portion 42b toward the arm portion 43. and The arm portion 43 has an upper surface 43b extending in both the Z-axis direction and the X-axis direction, and a side surface 43c extending in both the Y-axis direction and the Z-axis direction.

FIG. 6 is a sectional view showing the structure around the clamp 20, the support member 40, and the support member 40 in the fusion splicer 1. FIG. As shown in FIGS. 5 and 6, the fusion splicer 1 includes a second rotating mechanism 1B that rotatably supports the clamp 20 about the X axis, and a second rotating mechanism 1B that rotatably supports the clamp 20 about the Y axis. and a third rotation mechanism 1C. The second rotating mechanism 1B is provided, for example, above the first rotating mechanism 1A.

The support portion 41 includes a first support portion 41b having a shaft portion 40b and a second support portion 41c extending upward from the first support portion 41b. The second support portion 41c has a recess 41d into which the first support portion 41b is inserted, and a shaft portion 41f extending in the X-axis direction in the recess 41d. The first support portion 41b has a hole 41g into which the shaft portion 41f is inserted. For example, the second rotation mechanism 1B is configured by the hole 41g of the first support portion 41b and the shaft portion 41f of the second support portion 41c. That is, in the second rotation mechanism 1B, the first support portion 41b is rotatable about the X axis with respect to the second support portion 41c by inserting the shaft portion 41f into the hole 41g. Therefore, the clamp 20 is rotatable around the X axis with respect to the second support portion 41c.

The second support portion 41c has an oval shape extending in the Y-axis direction and has a slit 41k penetrating in the X-axis direction. The head portion 42 has a recess 42f into which the second support portion 41c is inserted from below, and a hole 42j extending in the X-axis direction. Further, the support member 40 has a rod-shaped member 41p inserted into the slit 41k and the hole 42j. The rod-shaped member 41p inserted into the hole 42j is inserted into the slit 41k extending in the Y-axis direction, so that the second support portion 41c can move with respect to the head portion 42 along the Y-axis direction. For example, the support member 40 has a spring 41q that biases the second support portion 41c downward. The second support portion 41c has, for example, a recess 41r recessed from the upper end of the second support portion 41c. The spring 41q is arranged between the bottom surface 42g of the recess 42f and the bottom surface 41t of the recess 41r, and is extendable in the Y-axis direction.

The fusion splicer 1 includes, for example, an attachment member 50 to which the support member 40 is attached. The arm portion 43 includes a first hole 43d recessed from the upper surface 43b, a recess 43f located on the opposite side of the head portion 42 when viewed from the first hole 43d, and recessed from the side surface 43c and extending along the X-axis direction. and a second hole 43g present. The recess 43f is formed in the upper surface 43b and extends along the X-axis direction on the upper surface 43b.

The mounting member 50 includes a body portion 51 positioned above the arm portion 43 , a first projecting portion 52 projecting downward from the body portion 51 , and a position of the first projecting portion 52 on the side of the clamp 20 extending downward from the body portion 51 . and a rod-like portion 54 extending in the X-axis direction in the body portion 51 . The rod-shaped portion 54 is inserted into the second hole 43g of the arm portion 43. As shown in FIG. For example, the length of the second hole 43g in the Y-axis direction is longer than the length of the second hole 43g in the Z-axis direction. The first projecting portion 52 contacts the upper surface 43b of the arm portion 43, and the second projecting portion 53 is fitted into the first hole 43d of the arm portion 43. As shown in FIG.

For example, the third rotation mechanism 1C is configured by the first hole 43d of the arm portion 43 and the second projecting portion 53 of the mounting member 50. That is, in the third rotation mechanism 1C, the support member 40 is rotatable about the Y axis with respect to the mounting member 50 by inserting the second projecting portion 53 into the first hole 43d. As a result, as shown in FIG. 7, the clamp 20 is rotatable with respect to the table 11 around the Y axis. For example, the attachment member 50 may include a drive section 55 that rotates the support member 40 and the clamp 20 around the Y-axis via the third rotation mechanism 1C.

Next, the effects obtained from the fusion splicer 1 according to this embodiment will be described. A fusion splicer 1 includes a base 11 having a main surface 12 formed with a V-groove 13 and a clamp 20 for holding an optical fiber F placed on the V-groove 13 . The clamp 20 is rotatable by the first rotating mechanism 1A and the second rotating mechanism 1B. The first rotating mechanism 1A enables the clamp 20 to rotate around the Z-axis extending along the V-groove 13. As shown in FIG. The second rotating mechanism 1B allows the clamp 20 to rotate about the X-axis, which extends along the main surface 12 and is orthogonal to the Z-axis.

The clamp 20 is rotatable around the Z axis and the X axis, so that it can flexibly change its posture when holding the optical fiber F. Even if there is debris or dust on the main surface 12 of the base 11, the clamp 20 can hold the optical fiber F while avoiding the debris or dust, so that the optical fiber F can be properly pressed. Therefore, axial misalignment of the optical fiber F can be suppressed.

The fusion splicer 1 may further include a third rotating mechanism 1C that allows the clamp 20 to rotate around the Y-axis perpendicular to the main surface 12. In this case, the clamp 20 is rotatable around the Y-axis extending in the direction orthogonal to the main surface 12 of the table 11 in addition to the Z-axis and the X-axis. Since the clamp 20 is rotatable around the X-axis, Y-axis, and Z-axis, it can change its posture more flexibly when holding the optical fiber F.

The fusion splicer 1 may include a driving section 55 that rotates the clamp 20 via the third rotating mechanism 1C. In this case, the driving section 55 rotates the clamp 20 around the Y-axis via the third rotating mechanism 1C. Therefore, even if there is debris or dust on the main surface 12 of the table 11, the rotation can reliably avoid the debris or dust.

Next, a fusion splicer according to a modification will be described with reference to FIGS. 8 and 9. FIG. 8 and 9 are diagrams schematically showing a partial configuration of a fusion splicer according to a modification. As shown in FIG. 8, the fusion splicer may comprise a first rotating mechanism 61A and a second rotating mechanism 61B having integral spherical members 61. As shown in FIG. In other words, the first rotating mechanism 61A and the second rotating mechanism 61B are so-called ball joints configured with a common integral spherical member 61 . The spherical member 61 enters a recess 71 formed in the upper surface 70b of the clamp 70 while being fixed to the lower surface 80b of the support member 80, for example. For example, the clamp 70 is rotatable about the Z-axis and the X-axis with respect to the spherical member 61 .

As described above, the first rotating mechanism 61A and the second rotating mechanism 61B may have an integrated spherical member 61 as in the modification of FIG. In this case, since the first rotation mechanism 61A and the second rotation mechanism 61B are integrally formed, the configurations of the first rotation mechanism 61A and the second rotation mechanism 61B can be simplified. When the first rotating mechanism 61A and the second rotating mechanism 61B have the integrated spherical member 61, the posture of the clamp 70 can be more varied, so that the optical fiber F can be pressed more appropriately. can.

As schematically shown in FIG. 9, the fusion splicer includes a limiter 90 that limits the rotation of the clamp 20 via the third rotation mechanism 1C so that the angle of rotation is less than or equal to a certain angle. good too. The limiter 90 is provided, for example, at a position facing the side surface of the arm portion 43 of the support member 40 . In this case, it is possible to prevent the clamp 20 from rotating too much around the Y axis.

The embodiments and modifications of the fusion splicer according to the present disclosure have been described above. However, the present invention is not limited to the above-described embodiments or modifications, and can be modified as appropriate within the scope of the gist described in the claims. The shape, size, number, material, and layout of each part of the fusion splicer are not limited to the above-described embodiments, and can be changed as appropriate.

For example, in the above embodiment, the fusion splicer 1 including the first rotating mechanism 1A, the second rotating mechanism 1B, and the third rotating mechanism 1C has been described. However, the fusion splicer according to the present disclosure may be a fusion splicer that includes only the first rotating mechanism 1A and the second rotating mechanism 1B. In the above embodiment, the clamp 20 and the first support portion 41b are provided with the first rotation mechanism 1A, the first support portion 41b and the second support portion 41c are provided with the second rotation mechanism 1B, and the arm portion 43 and An example in which the attachment member 50 is provided with the third rotation mechanism 1C has been described. However, the positions, shapes, and the like of the first rotating mechanism, the second rotating mechanism, and the third rotating mechanism are not limited to the above examples, and can be changed as appropriate.

REFERENCE SIGNS LIST 1 fusion splicer 1A first rotation mechanism 1B second rotation mechanism 1C third rotation mechanism 2 windshield cover 3 housing 4 fusion splicer 5 heater 6 discharge electrode 7 monitor 8 Power switch 9 Connection start switch 10 Optical fiber holder 11 Base 12 Principal surface 13 V groove 20 Clamp 20d First part 20g Second part 20h Pressing part 40 Supporting member 40b Shaft part 41 Support portion 41b First support portion 41c Second support portion 41d Recessed portion 41f Shaft portion 41g Hole 41k Slit 41p Bar member 41q Spring 41r Recessed portion 41t Bottom surface 42 Head portion 42b Body portion 42c First projecting portion 42d Second projecting portion 42f Recess 42g Bottom surface 42j Hole 43 Arm portion 43b Top surface 43c Side surface 43d First hole 43f Recess 43g Second hole 50 Mounting member 51 Body Part 52... First projecting part 53... Second projecting part 54... Rod-shaped part 55... Driving part 61... Spherical member 61A... First rotating mechanism 61B... Second rotating mechanism 70... Clamp 70b... Upper surface 71... Recess 80... Supporting member 80b... Lower surface 90... Limiter F... Optical fiber

Claims (20)

1. a base having a major surface with a V-groove for positioning the optical fiber;
   a clamp that holds the optical fiber placed on the V-groove;
   a first rotating mechanism capable of rotating the clamp about the Z-axis extending along the V-groove;
   a second rotation mechanism capable of rotating the clamp about an X-axis orthogonal to the Z-axis and extending along the main surface;
   comprising
   Fusion splicer.
2. The first rotating mechanism and the second rotating mechanism have integral spherical members,
   The fusion splicer according to claim 1.
3. The second rotating mechanism is provided above the first rotating mechanism,
   The fusion splicer according to claim 1.
4. Further comprising a third rotation mechanism that allows the clamp to rotate about a Y-axis orthogonal to the main surface,
   The fusion splicer according to any one of claims 1 to 3.
5. A drive unit that rotates the clamp via the third rotation mechanism,
   The fusion splicer according to claim 4.
6. A limiter that limits the rotation of the clamp via the third rotation mechanism so that the angle of rotation is equal to or less than a certain angle,
   The fusion splicer according to claim 4 or 5.
7. A support member that supports the clamp,
   In the first rotating mechanism, the clamp is rotatable about a first shaft portion of the support member extending along the Z axis.
   The fusion splicer according to any one of claims 1 to 6.
8. A support member that supports the clamp,
   The support member has a support portion that enters the clamp and rotatably supports the clamp.
   The fusion splicer according to any one of claims 1 to 7.
9. The support portion includes a first support portion having a first shaft portion and a second support portion extending upward from the first support portion,
   the second support has a second shaft extending along the X-axis, the first support has a hole into which the second shaft is inserted,
   The second rotation mechanism is configured by the hole and the second shaft,
   The fusion splicer according to claim 8.
10. A support member that supports the clamp, and an attachment member to which the support member is attached,
    wherein the mounting member comprises the drive portion;
    The fusion splicer according to claim 5.
11. A support member that supports the clamp, and an attachment member to which the support member is attached,
    The support member has an arm portion extending along the Z-axis, the arm portion having a first hole recessed from the upper surface thereof,
    The mounting member includes a main body portion positioned above the arm portion, a first projecting portion downwardly projecting from the main body portion, and a position of the first projecting portion on the clamp side projecting downwardly from the main body portion. and a second protrusion that
    The third rotation mechanism is configured by the first hole and the second protrusion,
    The fusion splicer according to claim 4.
12. A support member that supports the clamp,
    the drive unit rotates the support member and the clamp about the Y axis;
    The fusion splicer according to claim 5.
13. A support member that supports the clamp,
    The support member includes a support portion that enters the clamp and rotatably supports the clamp, a head portion that is provided above the support portion, and an arm portion that extends from the head portion along the Z axis. comprising
    The fusion splicer according to any one of claims 1 to 12.
14. The support portion is rod-shaped and extends along the Y-axis perpendicular to the main surface.
    The fusion splicer according to claim 13.
15. The head portion has a body portion positioned above the support portion, a first protrusion projecting upward from the body portion, and a second protrusion projecting from the body portion toward the arm portion. ,
    The fusion splicer according to claim 13 or 14.
16. The arm portion has an upper surface extending in both the direction in which the Z-axis extends and the direction in which the X-axis extends, and an upper surface extending in the direction in which the Y-axis orthogonal to the main surface extends and in the direction in which the Z-axis extends. an extending side;
    The fusion splicer according to any one of claims 13 to 15.
17. A support member that supports the clamp, and an attachment member to which the support member is attached,
    The mounting member includes a main body portion positioned above the arm portion of the support member, a first projecting portion projecting downward from the main body portion, and a position of the first projecting portion on the clamp side from the main body portion. Having a second projecting portion projecting downward, and a bar-shaped portion extending along the X-axis in the body portion,
    A fusion splicer according to any one of claims 1 to 16.
18. The arm portion has a first hole recessed from the upper surface of the arm portion and a second hole recessed from the side surface of the arm portion and extending along the X axis,
    The rod-shaped portion is inserted into the second hole,
    18. The fusion splicer of claim 17.
19. The length of the second hole in the direction in which the Y-axis perpendicular to the main surface extends is longer than the length of the second hole in the direction in which the Z-axis extends,
    19. The fusion splicer of claim 18.
20. The first projecting portion contacts the upper surface of the arm portion, and the second projecting portion is fitted into the first hole of the arm portion,
    The fusion splicer according to claim 18 or 19.
    
    

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