Optical fiber cutting device

Abstract

The utility model relates to an optical fiber cutting device. The utility model relates to an optical fiber cutting device which is provided with a pedestal part and a main body part. The pedestal part can carry an optical fiber holder for holding an optical fiber. The main body part is provided with a scar applying knife for applying scars to the optical fiber. The main body part has a first mounting part and a second mounting part on which the pedestal part can be mounted. In a state where the scar applying blade is located at a position where the scar applying blade applies a scar to the optical fiber, the first mounting portion and the second mounting portion are located at positions opposite to each other with respect to the scar applying blade, and the first mounting portion, the scar applying blade, and the second mounting portion are arranged in one direction.

Description

Technical Field

[0001] The utility model relates to an optical fiber cutting device. Background Art

[0002] Patent document 1 discloses an optical fiber cutting device, which includes: a main body provided with a scar application knife for applying scars to an optical fiber; an optical fiber holder for holding the optical fiber; and a cover body connected to the main body so as to be openable and closable. The user holds the optical fiber to be cut with one hand and sets the held optical fiber in the optical fiber holder. Then, by closing the cover body with the other hand, the optical fiber is pressed against the scar application knife. As a result, the optical fiber is scratched and cut.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2015-141304

[0004] In the optical fiber cutting device of Patent Document 1, the optical fiber holder is fixed to the right side of the scar applying knife. Therefore, depending on the dominant hand of the user, there is a case where the optical fiber cutting device is difficult to operate, and the usability is poor. Utility Model Content

[0005] The utility model is completed in consideration of such a situation, and its purpose is to provide an optical fiber cutting device with good convenience in use.

[0006] In order to solve the above-mentioned problems, the optical fiber cutting device involved in mode 1 of the utility model comprises: a base portion, which can carry an optical fiber holder that holds the optical fiber; and a main body portion, which has a scar applying knife for applying scars to the above-mentioned optical fiber, and the above-mentioned main body portion has a first mounting portion and a second mounting portion on which the above-mentioned base portion can be mounted. When the above-mentioned scar applying knife is located at a position to apply scars to the above-mentioned optical fiber, the above-mentioned first mounting portion and the above-mentioned second mounting portion are located at positions on opposite sides of each other with respect to the above-mentioned scar applying knife, and the above-mentioned first mounting portion, the above-mentioned scar applying knife and the above-mentioned second mounting portion are arranged in one direction.

[0007] According to the first aspect of the present invention, the usability of the optical fiber cutting device can be improved.

[0008] In addition, mode 2 of the utility model is based on the optical fiber cutting device of mode 1, the above-mentioned base portion has a loading surface for loading the above-mentioned optical fiber holder, the above-mentioned main body portion has a clamp for clamping the above-mentioned optical fiber, and the above-mentioned clamp has a clamp surface that supports the clamped above-mentioned optical fiber, the above-mentioned loading surface when the above-mentioned base portion is installed on the above-mentioned first mounting portion, and the above-mentioned loading surface when the above-mentioned base portion installed on the above-mentioned first mounting portion is installed on the above-mentioned second mounting portion are approximately parallel to the above-mentioned clamp surface, and the distance between the above-mentioned loading surface when the above-mentioned base portion is installed on the above-mentioned first mounting portion and the above-mentioned clamp surface is approximately equal to the distance between the above-mentioned loading surface when the above-mentioned base portion installed on the above-mentioned first mounting portion and the above-mentioned clamp surface when the above-mentioned base portion installed on the above-mentioned second mounting portion is installed.

[0009] According to the second aspect of the present invention, even when the pedestal portion is mounted on any one of the first mounting portion and the second mounting portion, the placement surface and the jig surface can be easily made parallel.

[0010] In addition, mode 3 of the utility model is based on the optical fiber cutting device of mode 2, the above-mentioned base part has a first positioning surface parallel to the above-mentioned loading surface, the above-mentioned first mounting part has a first mounting part surface parallel to the above-mentioned first positioning surface, and the above-mentioned second mounting part has a second mounting part surface parallel to the above-mentioned first positioning surface, when the above-mentioned base part is mounted on the above-mentioned first mounting part, the above-mentioned first positioning surface is in surface contact with the above-mentioned first mounting part surface, and when the above-mentioned base part is mounted on the above-mentioned second mounting part, the above-mentioned first positioning surface is in surface contact with the above-mentioned second mounting part surface.

[0011] According to the third aspect of the present invention, the placement surface and the jig surface can be positioned more easily.

[0012] In addition, according to mode 4 of the utility model, based on the optical fiber cutting device of mode 3, the base portion has a first pressing portion, which presses the first positioning surface against the first mounting portion surface or the second mounting portion surface when the base portion is mounted on the first mounting portion or the second mounting portion.

[0013] According to the fourth aspect of the present invention, the positioning accuracy of the placement surface with respect to the jig surface can be further improved.

[0014] Furthermore, a fifth aspect of the present invention is the optical fiber cutting device of the third or fourth aspect, wherein the base portion has two or more first positioning surfaces.

[0015] According to the fifth aspect of the present invention, the positioning accuracy of the placement surface with respect to the jig surface can be further improved.

[0016] In addition, mode 6 of the present invention is based on the optical fiber cutting device of mode 5, and the above-mentioned base portion has: a first side edge portion, which is located on one side of the intersection direction intersecting with the direction in which the above-mentioned base portion is installed on the above-mentioned first installation portion or the above-mentioned second installation portion; and a second side edge portion, which is located on the opposite side of the above-mentioned first side edge portion in the above-mentioned intersection direction, and the above-mentioned base portion has the above-mentioned first positioning surface provided on the above-mentioned first side edge portion, and the above-mentioned first positioning surface provided on the above-mentioned second side edge portion.

[0017] According to aspect 6 of the present invention, the positioning accuracy of the placement surface can be further improved.

[0018] In addition, mode 7 of the utility model is based on the optical fiber cutting device of mode 1, the above-mentioned base portion has a loading surface capable of loading the above-mentioned optical fiber holder, the above-mentioned base portion has a protrusion, and the protrusion protrudes in a first direction parallel to the above-mentioned loading surface or a second direction intersecting the above-mentioned loading surface in the direction of installing the above-mentioned base portion on the above-mentioned first mounting portion or the above-mentioned second mounting portion, the above-mentioned first mounting portion has a first fitting recess for the above-mentioned protrusion to be fitted when the above-mentioned base portion is installed, and the above-mentioned second mounting portion has a second fitting recess for the above-mentioned protrusion to be fitted when the above-mentioned base portion is installed.

[0019] According to the seventh aspect of the present invention, the placement surface can be easily positioned in the intersecting direction.

[0020] In addition, mode 8 of the present invention is an optical fiber cutting device according to any one of modes 2 to 6, wherein the base portion has a protrusion that protrudes in a first direction parallel to the mounting surface or in a second direction intersecting the mounting surface in a direction in which the base portion is mounted on the first mounting portion or the second mounting portion, the first mounting portion has a first fitting recess in which the protrusion is fitted when the base portion is mounted, and the second mounting portion has a second fitting recess in which the protrusion is fitted when the base portion is mounted.

[0021] According to the eighth aspect of the present invention, the placement surface can be easily positioned in the intersecting direction.

[0022] In addition, mode 9 of the utility model is an optical fiber cutting device according to mode 7 or 8, wherein the cross-sectional shape of the protrusion perpendicular to the first direction is a circle, and the cross-sectional shape of the first fitting recess or the second fitting recess perpendicular to the first direction is an ellipse whose major axis extends in a direction intersecting the supporting surface.

[0023] According to the ninth aspect of the present invention, it is possible to suppress a decrease in the positioning accuracy of the placement surface with respect to the jig surface.

[0024] In addition, mode 10 of the utility model is an optical fiber cutting device according to any one of modes 1 to 9, wherein the base portion has a second positioning surface that intersects with a first direction parallel to the mounting surface in a direction in which the base portion is mounted on the first mounting portion or the second mounting portion, the first mounting portion has a first mounting portion side surface that is in surface contact with the second positioning surface when the base portion is mounted, and the second mounting portion has a second mounting portion side surface that is in surface contact with the second positioning surface when the base portion is mounted.

[0025] According to the tenth aspect of the present invention, the placement surface and the scar inflicting knife can be easily positioned in the first direction.

[0026] In addition, method 11 of the utility model is based on the optical fiber cutting device of method 10, and when the above-mentioned scar applying knife is located at a position to apply a scar to the above-mentioned optical fiber, the distance between the above-mentioned first mounting part side surface and the above-mentioned scar applying knife in the normal direction of the above-mentioned first mounting part side surface and the above-mentioned scar applying knife is approximately equal to the distance between the above-mentioned second mounting part side surface and the above-mentioned scar applying knife in the normal direction of the above-mentioned second mounting part side surface.

[0027] According to the eleventh aspect of the present invention, even when the pedestal portion is mounted on any one of the first mounting portion and the second mounting portion, the placement surface and the scar inflicting knife can be appropriately positioned in the first direction.

[0028] In addition, mode 12 of the utility model is based on the optical fiber cutting device of mode 10 or 11, and the above-mentioned base portion has a second pressing portion, and the second pressing portion presses the above-mentioned second positioning surface against the side surface of the above-mentioned first mounting portion or the side surface of the above-mentioned second mounting portion when the above-mentioned base portion is installed on the above-mentioned first mounting portion or the above-mentioned second mounting portion.

[0029] According to aspect 12 of the present invention, the positioning accuracy of the placement surface in the first direction can be further improved.

[0030] In addition, mode 13 of the present invention is an optical fiber cutting device according to any one of modes 1 to 12, further comprising a waste box portion having a storage space capable of storing optical fiber waste generated from the optical fiber and capable of being mounted on each of the first mounting portion and the second mounting portion.

[0031] According to aspect 13 of the present invention, the usability of the optical fiber cutting device can be further improved.

[0032] In addition, mode 14 of the utility model is based on the optical fiber cutting device of mode 13, and the above-mentioned waste box part has a third pressing part, and the third pressing part presses the above-mentioned waste box part toward the above-mentioned first mounting part or the above-mentioned second mounting part when the above-mentioned waste box part is installed on the above-mentioned first mounting part or the above-mentioned second mounting part.

[0033] According to aspect 14 of the present invention, the waste box portion can be easily positioned.

[0034] According to the above aspect of the present invention, it is possible to provide an optical fiber cutting device that is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a perspective view showing the optical fiber cutting device according to the embodiment of the present invention in a first mounted state.

[0036] Figure 2 Yes means Figure 1 Exploded view of the fiber cutting device.

[0037] Figure 3 It is a perspective view showing the optical fiber cutting device according to the embodiment of the present invention in a second mounting state.

[0038] Figure 4 Yes means Figure 3 Exploded view of the fiber cutting device.

[0039] Figure 5 It is a figure which shows the mounting part which concerns on embodiment of this invention.

[0040] Figure 6 is observed from arrow VI Figure 5 Installation diagram of the device.

[0041] Figure 7 It is a figure which shows the base part which concerns on embodiment of this invention.

[0042] Figure 8 Yes Figure 7 A figure showing the base portion of the device with the base portion turned upside down.

[0043] Fig. 9 Observe from arrow IX Figure 7 Diagram of the pedestal.

[0044] Fig.10 It is a figure which shows the waste box part which concerns on embodiment of this invention.

[0045] Fig.11 It is observed from arrow XI Fig.10 Figure 2. A diagram of the waste bin section of FIG.

[0046] Description of Reference Numerals

[0047] 1…optical fiber cutting device; 10…main body; 11…scarring knife; 12…clamp; 12a…clamp surface; 20…base; 21A…first side edge; 21B…second side edge; 21a…loading surface; 21b…first positioning surface; 22a…second positioning surface; 30…optical fiber holder; 40…waste box; 50…mounting part (first mounting part, second mounting part); 51a…mounting part surface (first mounting part surface, second mounting part surface); 52a…mounting part side surface (first mounting part side surface, second mounting part side surface); 53…fitting recess (first fitting recess, second fitting recess); 61…first pressing part; 62…second pressing part; 63…third pressing part; X…length direction; Y…cross direction; S…storage space. DETAILED DESCRIPTION

[0048] Hereinafter, an optical fiber cutting device according to an embodiment of the present invention will be described with reference to the drawings.

[0049] like Figure 1 As shown in FIG. 1 , the optical fiber cutting device 1 according to the present embodiment includes a main body 10, a base 20, and a waste box 40. The base 20 can be mounted with an optical fiber holder 30 for holding the optical fiber F. The optical fiber holder 30 can be fixed to the base 20 by screws or by means other than screws (e.g., magnets, etc.). As long as the optical fiber F can be held, the structure of the optical fiber holder 30 is not particularly limited and can be appropriately changed.

[0050] The main body 10 has a scar application knife 11 for applying a scar to the optical fiber F extending from the base 20. The scar application knife 11 has a flat plate shape (a circular plate shape in the example shown in the figure). The scar application knife 11 involved in this embodiment scratches the optical fiber F by sliding and moving in a direction parallel to the scar application knife 11. The scar application knife 11 can also be configured to be able to move between a position where a scar is applied to the optical fiber F (scar application position) and a position where a scar is not applied to the optical fiber F (non-scar application position). In addition, in the following description, unless otherwise specified, the positional relationship of each component in the state where the scar application knife 11 is located at the scar application position is described. The main body 10 involved in this embodiment has: a base 13, on which the scar application knife 11 is provided; and an opening and closing portion 14, which is connected to the base 13 in an openable and closable manner. The base 13 has a connecting end 13a connected to the opening and closing portion 14, and a free end 13b located on the opposite side of the connecting end 13a.

[0051] like Figure 1 to Figure 4As shown, the main body 10 has a first mounting portion 50A and a second mounting portion 50B. The first mounting portion 50A and the second mounting portion 50B are located on opposite sides of each other in the length direction of the optical fiber F (the length direction X described later) when viewed from the scar application knife 11. In other words, it can also be understood that: when the scar application knife 11 is located at a position to apply a scar to the optical fiber F, the first mounting portion 50A and the second mounting portion 50B are located at positions on opposite sides of each other with respect to the scar application knife 11 as a reference. When the scar application knife 11 is located at a position to apply a scar to the optical fiber F, the first mounting portion 50A, the scar application knife 11 and the second mounting portion 50B are arranged in one direction (the length direction X described later).

[0052] Either the pedestal 20 or the waste box 40 is mounted on each mounting portion 50A or 50B. That is, the optical fiber cutting device 1 according to the present embodiment can obtain a first mounting state ( Figure 1 , Figure 2 ) and the second installation state ( Figure 3 , Figure 4 )These two states. The first installation state ( Figure 1 , Figure 2 ) is a state where the waste tank section 40 is mounted on the first mounting section 50A and the pedestal section 20 is mounted on the second mounting section 50B. The second mounting state ( Figure 3 , Figure 4 ) is a state where the base portion 20 is mounted on the first mounting portion 50A and the waste box portion 40 is mounted on the second mounting portion 50B. However, the optical fiber cutting device 1 may not include the waste box portion 40. In the following description, unless otherwise specified, the optical fiber cutting device 1 is in the first mounting state ( Figure 1 , Figure 2 ) is used to illustrate the positional relationship of each component.

[0053] (Direction definition)

[0054] In this specification, the length direction of the optical fiber F is referred to as the length direction X. The length direction X is also a direction that intersects (for example, is orthogonal to) the direction in which the scar application knife 11 slides and moves. The length direction X is also a direction in which the first mounting portion 50A and the second mounting portion 50B are arranged. The length direction X is also a direction in which the first mounting portion 50A, the scar application knife 11, and the second mounting portion 50B are arranged when the scar application knife 11 is located at a position to apply scars to the optical fiber F. The direction from the second mounting portion 50B toward the first mounting portion 50A along the length direction X is referred to as the +X direction or the right. The direction opposite to the +X direction is referred to as the -X direction or the left. In the length direction X, the side close to the scar application knife 11 is referred to as the inner side, and the side away from the scar application knife 11 is referred to as the outer side. In addition, when the opening and closing portion 14 is closed, the direction in which the base 13 and the opening and closing portion 14 are arranged is referred to as the up-down direction Z. The up-down direction Z is also a direction that intersects (for example, is orthogonal to) the clamp surface 12a and the mounting surface 21a described later. The up-down direction Z intersects (for example, is orthogonal to) the length direction X. The direction from the base 13 toward the opening and closing portion 14 along the up-down direction Z is referred to as the +Z direction or the upper direction. The direction opposite to the +Z direction is referred to as the -Z direction or the lower direction. In addition, the direction in which the connecting end 13a and the free end 13b are arranged is referred to as the cross direction Y. The cross direction Y intersects (for example, is orthogonal to) both the length direction X and the up-down direction Z. The direction from the free end 13b toward the connecting end 13a along the cross direction Y is referred to as the +Y direction or the rear. The direction opposite to the +Y direction is referred to as the -Y direction or the front. The cross direction Y may also be the direction in which the scar applying knife 11 slides and moves. The length direction X and the cross direction Y are also directions parallel to the clamp surface 12a and the mounting surface 21a described later. In the present embodiment, the length direction X and the up-down direction Z are also directions in which the pedestal portion 20 is mounted on the first mounting portion 50A or the second mounting portion 50B. The length direction X can also be defined as "a direction parallel to the mounting surface 21a in the direction of installing the pedestal portion 20 on the first mounting portion 50A or the second mounting portion 50B". The length direction X is also referred to as the first direction. The up-down direction Z can also be defined as "a direction intersecting (for example, orthogonal) with the mounting surface 21a in the direction of installing the pedestal portion 20 on the first mounting portion 50A or the second mounting portion 50B". The up-down direction Z is also referred to as the second direction. The intersection direction Y can also be defined as "a direction intersecting (for example, orthogonal) with the direction of installing the pedestal portion 20 on the first mounting portion 50A or the second mounting portion 50B".

[0055] like Figure 1As shown, the main body 10 has two clamps 12 for clamping the optical fiber F extending from the base 20. The two clamps 12 are configured to clamp the scar application knife 11 in the middle in the length direction X. Hereinafter, the clamp 12 located on the right side (first mounting portion 50A side) of the scar application knife 11 is referred to as the first clamp 12A, and the clamp 12 located on the left side (second mounting portion 50B side) of the scar application knife 11 is referred to as the second clamp 12B.

[0056] Each of the clamps 12A and 12B has a clamp surface 12a provided on the base 13 and a pressing surface 12b provided on the opening and closing portion 14. Each of the clamps 12A and 12B clamps the optical fiber F by the clamp surface 12a and the pressing surface 12b. When the opening and closing portion 14 is closed, the pressing surface 12b presses the optical fiber F against the clamp surface 12a. The clamp surface 12a faces upward. The clamp surface 12a supports the clamped optical fiber F (pressed by the pressing surface 12b). The clamp 12 (clamp surface 12a and pressing surface 12b) may also be formed of an elastic member such as rubber.

[0057] like Figure 1 to Figure 4 As shown, the two mounting portions 50A and 50B are located on both sides of the main body 10 in the longitudinal direction X. That is, the first mounting portion 50A is located on the right side of the main body 10, and the second mounting portion 50B is located on the left side of the main body 10. Here, when viewed from the outside in the longitudinal direction X, the shape of the first mounting portion 50A is substantially the same as the shape of the second mounting portion 50B. Therefore, hereinafter, unless otherwise specified, the second mounting portion 50B of the two mounting portions 50A and 50B is represented as the "mounting portion 50", and only the shape of the second mounting portion 50B is described in detail.

[0058] like Figure 5 As shown in FIG. 1 , the mounting portion 50 according to the present embodiment includes a configuration recess 51 and a protrusion 52. In this specification, the configuration recess 51 and the protrusion 52 of the first mounting portion 50A are sometimes referred to as a first configuration recess 51A and a first protrusion 52A, respectively. In addition, the configuration recess 51 and the protrusion 52 of the second mounting portion 50B are sometimes referred to as a second configuration recess 51B and a second protrusion 52B, respectively.

[0059] The configuration recess 51 is a recess that opens on both the side surface (the surface facing the outside in the length direction X) and the upper surface of the main body 10. The configuration recess 51 has a mounting portion bottom surface 51a facing upward. The mounting portion bottom surface 51a is also referred to as the mounting portion surface 51a. The mounting portion bottom surface 51a in this embodiment is parallel to the fixture surface 12a. In this specification, the mounting portion bottom surface 51a of the first mounting portion 50A is sometimes referred to as the first mounting portion bottom surface 51aA, and the mounting portion bottom surface 51a of the second mounting portion 50B is sometimes referred to as the second mounting portion bottom surface 51aB. A first threaded hole 51b is opened in the mounting portion bottom surface 51a. The first threaded hole 51b extends downward from the mounting portion bottom surface 51a.

[0060] The raised portion 52 is raised from the side surface of the main body 10 toward the outside in the longitudinal direction X. The raised portion 52 has a mounting portion side surface 52a facing the outside in the longitudinal direction X. In this specification, the mounting portion side surface 52a of the first mounting portion 50A is sometimes referred to as a first mounting portion side surface 52aA, and the mounting portion side surface 52a of the second mounting portion 50B is sometimes referred to as a second mounting portion side surface 52aB.

[0061] like Figure 5 and Figure 6 As shown, a fitting recess 53 and an auxiliary recess 54 are formed in the raised portion 52. In this specification, the fitting recess 53 and the auxiliary recess 54 of the first mounting portion 50A are sometimes referred to as the first fitting recess 53A and the first auxiliary recess 54A, respectively, and the fitting recess 53 and the auxiliary recess 54 of the second mounting portion 50B are sometimes referred to as the second fitting recess 53B and the second auxiliary recess 54B. A second threaded hole 52b is opened on the bottom surface (the surface facing the outside of the length direction X) of the fitting recess 53. An auxiliary threaded hole 52c is opened on the bottom surface (the surface facing the outside of the length direction X) of the auxiliary recess 54. Each threaded hole 52b, 52c extends from the bottom surface of the recesses 53, 54 toward the inside of the length direction X.

[0062] Each recess 53, 54 is recessed from the mounting portion side surface 52a toward the inner side in the length direction X. The fitting recess 53 and the auxiliary recess 54 are arranged along the cross direction Y. Figure 6 As shown, when observing the cross section orthogonal to the longitudinal direction X, the shapes of the recesses 53 and 54 are different from each other. That is, the cross-sectional shape of the auxiliary recess 54 is circular, and the cross-sectional shape of the fitting recess 53 is elliptical. The major axis of the fitting recess 53 extends in the vertical direction Z, and the minor axis extends in the intersecting direction Y.

[0063] Specifically, when observing a cross section orthogonal to the longitudinal direction X, the inner circumferential surface of the fitting recess 53 involved in the present embodiment includes a pair of straight portions 53a and a pair of arc portions 53b. Each straight portion 53a extends in a straight line along the up-down direction Z. A pair of straight portions 53a are opposite in the cross direction Y. A pair of arc portions 53b connects the two ends (upper end and lower end) of the straight portion 53a to each other. Each arc portion 53b extends in an arc shape. The inner diameter R1 of the fitting recess 53 in the up-down direction Z is larger than the inner diameter R2 of the fitting recess 53 in the cross direction Y.

[0064] Here, in this embodiment, Figure 2 The distance d1A shown is approximately equal to the distance d1B. The distance d1A is the distance between the bottom surface 51aA of the first mounting portion and the fixture surface 12a (the fixture surface 12a of the first fixture 12A) in the normal direction of the bottom surface 51aA of the first mounting portion (i.e., the up-down direction Z). The distance d1B is the distance between the bottom surface 51aB of the second mounting portion and the fixture surface 12a (the fixture surface 12a of the second fixture 12B) in the normal direction of the bottom surface 51aB of the second mounting portion (i.e., the up-down direction Z). However, the term "approximately equal" also includes the case where they are considered equal as long as the manufacturing error is removed. The same is true in the following description.

[0065] In addition, in this embodiment, Figure 4 The distance d2A shown is substantially equal to the distance d2B. The distance d2A is the distance between the first mounting portion side surface 52aA and the scar application knife 11 in the normal direction of the first mounting portion side surface 52aA (i.e., the length direction X). The distance d2B is the distance between the second mounting portion side surface 52aB and the scar application knife 11 in the normal direction of the second mounting portion side surface 52aB (i.e., the length direction X).

[0066] like Figure 7 and Figure 8 As shown, the base portion 20 involved in this embodiment includes a placement portion 21, an extension portion 22, a first pressing unit 61 (in Figure 7 The first pressing unit 61 and the second pressing unit 62 are screws. The first pressing unit 61 is also referred to as a first pressing portion 61. The second pressing unit 62 is also referred to as a second pressing portion 62.

[0067] The placement portion 21 according to the present embodiment has a substantially plate-like shape extending in the longitudinal direction X and the intersecting direction Y. The placement portion 21 (base portion 20) has a first side edge portion 21A and a second side edge portion 21B (see Figure 8). The first side edge portion 21A is located on one side of the cross direction Y (in the example shown in the figure, the +Y side). The second side edge portion 21B is located on the other side of the cross direction Y (in the example shown in the figure, the -Y side). That is, the second side edge portion 21B is located on the side opposite to the first side edge portion 21A in the cross direction Y. The mounting portion 21 has a mounting surface 21a and a first positioning surface 21b. In addition, a first through hole 21c is formed in the mounting portion 21.

[0068] The optical fiber holder 30 (see also) is placed on the placement surface 21a. Figure 1 to Figure 4 ). The placement surface 21a intersects (for example, is perpendicular to) the up-down direction Z. That is, the placement surface 21a faces upward.

[0069] The first positioning surface 21b is provided on the side opposite to the mounting surface 21a in the mounting portion 21. That is, the first positioning surface 21b faces downward. In this embodiment, the mounting surface 21a and the first positioning surface 21b are parallel to each other. Figure 8 As shown, the first positioning surface 21b is located on the inner side of the extension portion 22 in the length direction X. When the pedestal portion 20 is mounted on the mounting portion 50 (the first mounting portion 50A or the second mounting portion 50B), the first positioning surface 21b abuts against the mounting portion bottom surface 51a (the first mounting portion bottom surface 51aA or the second mounting portion bottom surface 51aB) of the mounting portion 50.

[0070] The first positioning surface 21b involved in this embodiment is divided into two surfaces. In other words, the loading portion 21 involved in this embodiment has two first positioning surfaces 21b. The two first positioning surfaces 21b are arranged at intervals in the cross direction Y. One first positioning surface 21bA is provided at the first side edge portion 21A. The other first positioning surface 21bB is provided at the second side edge portion 21B. Each of the divided first positioning surfaces 21b has an area smaller than the area of ​​the bottom surface 51a of the mounting portion.

[0071] like Figure 7 As shown in FIG. 1 , the first through hole 21c opens on the mounting surface 21a. The first through hole 21c extends downward from the mounting surface 21a and penetrates the mounting portion 21 along the vertical direction Z. Figure 8 As shown in FIG. 1 , the first through hole 21c is located between the two first positioning surfaces 21b in the cross direction Y. Figure 8 As shown, an annular protrusion 21d protruding downward may be provided at the lower end of the first through hole 21c.

[0072] like Figure 7As shown, the extension portion 22 extends downward from the central portion of the mounting portion 21 in the longitudinal direction X. The extension portion 22 has a generally plate-like shape extending in the vertical direction Z and the cross direction Y. The extension portion 22 has a second positioning surface 22a. In addition, a second through hole 22b is formed in the extension portion 22. The second through hole 22b opens at the second positioning surface 22a (protrusion 23 described later) and penetrates the extension portion 22 in the longitudinal direction X.

[0073] The second positioning surface 22a intersects (for example, is orthogonal to) the longitudinal direction X. That is, the second positioning surface 22a involved in this embodiment faces the inner side of the longitudinal direction X. When the pedestal portion 20 is mounted on the mounting portion 50 (the first mounting portion 50A or the second mounting portion 50B), the second positioning surface 22a abuts against the mounting portion side surface 52a (the first mounting portion side surface 52aA or the second mounting portion side surface 52aB) of the mounting portion 50.

[0074] like Figure 7 and Figure 8 As shown, a protrusion 23 and an auxiliary protrusion 24 are formed in the extension portion 22. The protrusion 23 and the auxiliary protrusion 24 each protrude from the second positioning surface 22a toward the inner side of the length direction X. The above-mentioned second through hole 22b is opened in the protrusion 23. Therefore, when viewed from the length direction X, the protrusion 23 has an annular shape.

[0075] The protrusion 23 and the auxiliary protrusion 24 are arranged along the cross direction Y. The interval between the protrusion 23 and the auxiliary protrusion 24 is substantially equal to the interval between the fitting recess 53 of the mounting portion 50 and the auxiliary recess 54. When the pedestal portion 20 is mounted on the mounting portion 50 (the first mounting portion 50A or the second mounting portion 50B), the protrusion 23 fits with the fitting recess 53 (the first fitting recess 53A or the second fitting recess 53B), and the auxiliary protrusion 24 fits with the auxiliary recess 54 (the first auxiliary recess 54A or the second auxiliary recess 54B).

[0076] like Figure 8 As shown, when observing the cross section orthogonal to the longitudinal direction X, the cross-sectional shape of the protrusion 23 is circular. More specifically, the outer periphery of the protrusion 23 has a circular cross-sectional shape. In the example shown in the figure, the cross-sectional shape of the auxiliary protrusion 24 is also circular. The outer diameter r of the protrusion 23 is substantially equal to the inner diameter R2 of the auxiliary recess 54 in the intersecting direction Y.

[0077] like Figure 2 and Fig.10 As shown, the waste box part 40 involved in this embodiment has a storage part 41, a cover part 42 and two third pressing units 63. The third pressing unit 63 involved in this embodiment is a screw. In addition, the number of the third pressing units 63 can be appropriately changed. The third pressing unit 63 is also called a third pressing part 63.

[0078] like Figure 2 As shown in the figure, a storage space S is formed in the storage portion 41. The storage space S is a space that can store optical fiber waste generated by the optical fiber F when the optical fiber cutting device 1 is used. In the example shown in the figure, the storage space S is open to the upper end of the storage portion 41. The storage portion 41 can be formed by one component or by combining two or more components. The storage portion 41 involved in this embodiment has a main portion 41a and a claw portion 41b extending from the upper end of the main portion 41a toward the inner side of the longitudinal direction X.

[0079] The cover 42 is connected to the storage portion 41 (the claw portion 41b in the example shown in the figure) so as to be switchable between a closed state in which the opening end of the storage portion 41 is closed and an open state in which the opening end is not closed. However, the waste box portion 40 may not have the cover 42.

[0080] like Fig.10 As shown, the housing portion 41 (main portion 41a) has a third positioning surface 41c. In addition, the housing portion 41 (main portion 41a) is formed with a first positioning protrusion 43, a second positioning protrusion 44, and two insertion holes 41d.

[0081] The third positioning surface 41c intersects (for example, is orthogonal to) the longitudinal direction X. That is, the third positioning surface 41c involved in this embodiment faces the inner side of the longitudinal direction X. When the waste box part 40 is mounted on the mounting part 50 (the first mounting part 50A or the second mounting part 50B), the third positioning surface 41c abuts against the mounting part side surface 52a (the first mounting part side surface 52aA or the second mounting part side surface 52aB) of the mounting part 50.

[0082] The first positioning protrusion 43 and the second positioning protrusion 44 each protrude from the third positioning surface 41c toward the inner side in the length direction X. Each of the first positioning protrusion 43 and the second positioning protrusion 44 has one insertion hole 41d. Fig.11 As shown, when viewed from the longitudinal direction X, the first positioning protrusion 43 and the second positioning protrusion 44 each have an annular shape.

[0083] The first positioning protrusion 43 and the second positioning protrusion 44 are arranged along the cross direction Y. The interval between the first positioning protrusion 43 and the second positioning protrusion 44 is substantially equal to the interval between the fitting recess 53 and the auxiliary recess 54 of the mounting portion 50. When the waste tank portion 40 is mounted on the mounting portion 50 (the first mounting portion 50A or the second mounting portion 50B), the first positioning protrusion 43 fits with the auxiliary recess 54 (the first auxiliary recess 54A or the second auxiliary recess 54B), and the second positioning protrusion 44 fits with the fitting recess 53 (the first fitting recess 53A or the second fitting recess 53B).

[0084] like Fig.11 As shown, when observing the cross section orthogonal to the longitudinal direction X, the shapes of the positioning protrusions 43 and 44 are different from each other. That is, the cross-sectional shape of the first positioning protrusion 43 is circular, and the cross-sectional shape of the second positioning protrusion 44 is elliptical. The major axis of the second positioning protrusion 44 extends along the vertical direction Z, and the minor axis extends along the cross direction Y.

[0085] Specifically, when observing a cross section orthogonal to the longitudinal direction X, the outer peripheral surface of the second positioning protrusion 44 involved in the present embodiment includes a pair of straight portions 44a and a pair of arc portions 44b. Each straight portion 44a extends linearly along the up-down direction Z. A pair of straight portions 44a are arranged along the cross direction Y. A pair of arc portions 44b connects the two ends (upper end and lower end) of the straight portion 44a to each other. Each arc portion 44b extends in an arc shape. The outer diameter R3 of the second positioning protrusion 44 in the up-down direction Z is larger than the outer diameter R4 of the second positioning protrusion 44 in the cross direction Y. The outer diameter R3 of the second positioning protrusion 44 in the up-down direction Z is equal to the inner diameter R1 of the mating recess 53 in the up-down direction Z (refer to Figure 6 The outer diameter R4 of the second positioning protrusion 44 in the cross direction Y is larger than the inner diameter R2 of the fitting recess 53 in the cross direction Y (refer to Figure 6 )Small.

[0086] Next, the operation of the optical fiber cutting device 1 configured as above will be described.

[0087] In the conventional optical fiber cutting device (for example, see Patent Document 1), the optical fiber holder for holding the optical fiber is fixed to one side (for example, the right side) when viewed from the scarifying knife for scarring the optical fiber. Therefore, it is difficult to perform the operation depending on the dominant hand of the user, and the optical fiber cutting device is not easy to use.

[0088] When placing the optical fiber cutting device on a workbench or the like for operation, the user usually positions the optical fiber cutting device at the front ( Figure 1 The user performs the operation with the free end 13b of the optical fiber cutter facing the user. However, depending on the working environment such as aerial installation or a narrow place, a workbench for placing the optical fiber cutter may not be used. In this case, the user may Figure 1 The user may perform the operation with the optical fiber cutting device facing the connecting end 13a) toward the user. That is, the user may perform the operation with the optical fiber cutting device facing inverted (front and back). In the conventional structure in which the optical fiber holder is fixed to one side of the scar application knife, it may be difficult to perform the operation with the optical fiber cutting device facing inverted.

[0089] In contrast, the optical fiber cutting device 1 according to the present embodiment has two mounting portions 50A and 50B on which the optical fiber holder 30 can be mounted. Furthermore, the two mounting portions 50A and 50B are arranged on opposite sides from each other as viewed from the scar application knife 11. Thus, the user can mount the pedestal portion 20 holding the optical fiber holder 30 to any one of the first mounting portion 50A located on one side as viewed from the scar application knife 11 and the second mounting portion 50B located on the other side as viewed from the scar application knife 11 according to his / her own ideas. Therefore, the usability of the optical fiber cutting device 1 can be improved regardless of the dominant hand of the user and the orientation (front and back) of the optical fiber cutting device 1.

[0090] In addition, from the viewpoint of ensuring the cutting performance of the optical fiber cutting device 1, the positional relationship between the clamp surface 12a and the optical fiber F is important. Specifically, it is important that the relative position of the optical fiber F and the clamp surface 12a in the vertical direction Z is appropriate, and that the optical fiber F is parallel to the clamp surface 12a. Here, the optical fiber F is held by the optical fiber holder 30. Therefore, in order to make the positional relationship (relative position and relative angle in the vertical direction Z) between the clamp surface 12a and the optical fiber F appropriate, it is important to make the positional relationship (relative position and relative angle in the vertical direction Z) between the mounting surface 21a on which the optical fiber holder 30 is mounted and the optical fiber F appropriate.

[0091] In addition, if the length of the cut optical fiber F (the position of the cut portion in the longitudinal direction X) is deviated, it may cause trouble to the fusion splicing operation performed after the cutting operation. In addition, if the position of the optical fiber F is deviated in the cross direction Y, the optical fiber F is not placed on the fixture surface 12a, and it becomes difficult to cut the optical fiber F. Therefore, it is also important to properly position the optical fiber F (the mounting surface 21a) in the longitudinal direction X and the cross direction Y.

[0092] On the other hand, the optical fiber cutting device 1 according to the present embodiment is configured so that the placement surface 21a is appropriately positioned when the base portion 20 is mounted on the mounting portions 50A, 50B. The positioning of the placement surface 21a will be described in detail below.

[0093] When mounting the pedestal 20 on the mounting portion 50 (the first mounting portion 50A or the second mounting portion 50B), the user makes the first positioning surface 21b contact the mounting portion bottom surface 51a, makes the second positioning surface 22a contact the mounting portion side surface 52a, and makes the protrusion 23 fit with the fitting recess 53 (for example, see Figure 5 and Figure 7 ).

[0094] Here, the first positioning surface 21b is in contact (surface contact) with the bottom surface 51a of the mounting portion, thereby positioning the loading surface 21a and the clamp surface 12a in the up-down direction Z. At this time, the loading surface 21a is parallel (approximately parallel) to the clamp surface 12a. This is because, for example, the loading surface 21a is parallel to the first positioning surface 21b, and the bottom surface 51a of the mounting portion is parallel to the clamp surface 12a, and the first positioning surface 21b is parallel to the bottom surface 51a of the mounting portion. In addition, as described above, in the present embodiment, the distance d1A between the bottom surface 51aA of the first mounting portion and the clamp surface 12a is approximately equal to the distance d1B between the bottom surface 51aB of the second mounting portion and the clamp surface 12a (refer to Figure 2 ). Therefore, even when the pedestal 20 is mounted on either the first mounting portion 50A or the second mounting portion 50B, the placement surface 21a and the fixture surface 12a in the vertical direction Z can be properly positioned. That is, Figure 4 The distance d3A shown is Figure 2 The distance d3B shown is substantially equal. The distance d3A is the distance between the mounting surface 21a and the fixture surface 12a when the base 20 is mounted on the first mounting portion 50A. The distance d3B is the distance between the mounting surface 21a and the fixture surface 12a when the base 20 is mounted on the second mounting portion 50B. In addition, the distance d3A and the distance d3B are both distances in the normal direction of the fixture surface 12a (i.e., the up and down direction Z). The mounting surface 21a is substantially parallel to the fixture surface 12a, and the distance d3A is substantially equal to the distance d3B, thereby enabling the optical fiber F to be cut in the same manner even when the base 20 is mounted on either the first mounting portion 50A or the second mounting portion 50B. The difference between the distance d3A and the distance d3B may also be less than 0.5 mm. The distance d3A and the distance d3B may also be equal.

[0095] Furthermore, when the first positioning surface 21b contacts the bottom surface 51a of the mounting portion, the placement surface 21a and the fixture surface 12a may not be completely parallel. That is, the term "placement surface 21a is parallel (substantially parallel) to the fixture surface 12a" in the present embodiment also includes a case where the placement surface 21a and the fixture surface 12a are not completely parallel. Even if the placement surface 21a is slightly inclined relative to the fixture surface 12a, the function of the optical fiber cutting device 1 for cutting the optical fiber F will not be a problem in practical terms. For example, as long as the inclination angle of the placement surface 21a relative to the fixture surface 12a is 1.0° or less, the function of the optical fiber cutting device 1 will not be a problem in practical terms. That is, the term "the mounting surface 21a is parallel to (substantially parallel to) the clamp surface 12a" involved in the present embodiment also includes a case where the mounting surface 21a is inclined relative to the clamp surface 12a to an extent that does not cause a practical problem as the function of the optical fiber cutting device 1 (for example, the inclination angle of the mounting surface 21a relative to the clamp surface 12a is less than 1.0°).

[0096] In addition, the second positioning surface 22a is in contact with the mounting portion side surface 52a (surface contact), so that the placement surface 21a and the scar application knife 11 are positioned in the longitudinal direction X. In addition, as described above, in this embodiment, the distance d2A between the first mounting portion side surface 52aA and the scar application knife 11 is substantially equal to the distance d2B between the second mounting portion side surface 52aB and the scar application knife 11 (refer to Figure 4 ). Therefore, even when the pedestal 20 is mounted on either the first mounting portion 50A or the second mounting portion 50B, the placement surface 21a and the scar applying knife 11 can be properly positioned in the longitudinal direction X. The difference between the distance d2A and the distance d2B may be less than 0.5 mm. The distance d2A and the distance d2B may be equal.

[0097] In addition, the protrusion 23 is engaged with the engagement recess 53, so that the placement surface 21a and the fixture surface 12a are positioned in the cross direction Y. Here, as described above, in this embodiment, the cross-sectional shape of the engagement recess 53 is an elliptical shape extending in the vertical direction Z, and the cross-sectional shape of the protrusion 23 is a circular shape (see Figure 6 and Fig. 9 ). Therefore, the protrusion 23 contacts the straight portion 53a in the inner circumferential surface of the fitting recess 53, and is not easy to contact the arc portion 53b. That is, the protrusion 23 and the fitting recess 53 are in contact in the cross direction Y, but are not easy to contact in the up-down direction Z. If the protrusion 23 and the fitting recess 53 are in contact in the up-down direction Z, there is a possibility that the positioning in the up-down direction Z performed by the first positioning surface 21b and the bottom surface 51a of the mounting portion is hindered. By making the cross-sectional shape of the fitting recess 53 an elliptical shape and the cross-sectional shape of the protrusion 23 a circular shape, such positioning obstruction can be prevented. Therefore, the positioning accuracy in the up-down direction Z can be more reliably improved.

[0098] After the first positioning surface 21b is brought into contact with the bottom surface 51a of the mounting portion, the user inserts the first pressing unit 61 into the first through hole 21c of the base portion 20 and screws the first pressing unit 61 into the first threaded hole 51b of the mounting portion 50 (for example, see Figure 5 and Figure 8 ). Thus, the first pressing unit 61 (the head of the screw) presses the first positioning surface 21b toward the bottom surface 51a of the mounting portion. Therefore, the first positioning surface 21b can be more reliably brought into contact with the bottom surface 51a of the mounting portion, further improving the positioning accuracy in the vertical direction Z. In addition, the annular protrusion 21d can be appropriately adjusted (see Figure 8) in a height (dimension in the up-down direction Z) so that the annular protrusion 21d does not hinder the surface contact between the first positioning surface 21b and the bottom surface 51a of the mounting portion, and the annular protrusion 21d can prevent the bending of the base portion 20 (carrying portion 21) caused by the pressing force of the first pressing unit 61.

[0099] In addition, in the present embodiment, the first positioning surface 21b is divided into a plurality of surfaces. The first positioning surface 21b may be bent into a convex shape due to manufacturing problems, etc. Assuming that the first positioning surface 21b is composed of only one surface and the first positioning surface 21b has an area of ​​the same degree as the bottom surface 51a of the mounting portion, there is a possibility that the central portion of the first positioning surface 21b becomes convex. In this case, the positioning accuracy in the up-down direction Z may be reduced. By dividing the first positioning surface 21b into a plurality of surfaces and reducing the area of ​​each surface as in the present embodiment, such a reduction in positioning accuracy can be suppressed.

[0100] After the second positioning surface 22a is brought into contact with the side surface 52a of the mounting portion and the protrusion 23 is engaged with the engaging recess 53, the user inserts the second pressing unit 62 into the second through hole 22b of the pedestal portion 20 and screws the second pressing unit 62 into the second threaded hole 52b of the mounting portion 50 (for example, see Figure 5 and Figure 8 ). Thus, the second pressing unit 62 (the head of the screw) presses the second positioning surface 22a toward the side surface 52a of the mounting portion. Therefore, the surface contact between the second positioning surface 22a and the side surface 52a of the mounting portion can be more reliably performed, and the positioning accuracy in the longitudinal direction X is further improved.

[0101] In addition, the optical fiber cutting device 1 according to the present embodiment includes a waste box unit 40. Compared with the base unit 20, the positioning accuracy of the waste box unit 40 is not important. However, if the position of the waste box unit 40 is greatly offset, the waste box unit 40 may interfere with other components. Therefore, in the optical fiber cutting device 1 according to the present embodiment, when the waste box unit 40 is mounted on the mounting parts 50A and 50B, the waste box unit 40 is appropriately positioned to a certain extent. The positioning of the waste box unit 40 will be described below.

[0102] When the waste box section 40 is mounted on the mounting section 50 (the first mounting section 50A or the second mounting section 50B), the user places the claw section 41b on the placement recess 51, makes the third positioning surface 41c contact the mounting section side surface 52a, makes the first positioning protrusion 43 fit with the auxiliary recess 54, and makes the second positioning protrusion 44 fit with the fitting recess 53 (for example, refer to Figure 5 and Fig.10 ).

[0103] Positioning of the waste box portion 40 and the mounting portion 50 in the longitudinal direction X is performed by the third positioning surface 41 c abutting against (surface contacting) the mounting portion side surface 52 a .

[0104] The first positioning protrusion 43 and the auxiliary recess 54 are engaged with each other, so that the waste box part 40 and the mounting part 50 are positioned in the cross direction Y. In addition, the second positioning protrusion 44 and the engaging recess 53 are engaged with each other, so that the relative rotation of the waste box part 40 with respect to the mounting part 50, centered on the first positioning protrusion 43 and the auxiliary recess 54, can be suppressed. More specifically, the arc portion 44b of the second positioning protrusion 44 is in contact with the arc portion 53b of the engaging recess 53, so that the relative rotation of the waste box part 40 can be suppressed. Here, as described above, the outer diameter R4 of the second positioning protrusion 44 in the cross direction Y is smaller than the inner diameter R2 of the engaging recess 53 in the cross direction Y (see FIG. 2 ). Figure 6 and Fig.11 ). Therefore, even when the interval between the positioning protrusions 43 and 44 and the interval between the recesses 53 and 54 are offset, the positioning protrusions 43 and 44 can be fitted into the recesses 53 and 54.

[0105] After the third positioning surface 41c is brought into contact with the side surface 52a of the mounting portion, the user inserts the two third pressing units 63 one by one into the two insertion holes 41d of the waste box portion 40. Then, the user screws one third pressing unit 63 into the second threaded hole 52b of the mounting portion 50 and screws the other third pressing unit 63 into the auxiliary threaded hole 52c (for example, see Figure 5 and Fig.10 ). Thus, the third pressing unit 63 presses the third positioning surface 41c toward the mounting portion side surface 52a. Therefore, the third positioning surface 41c can be more reliably brought into surface contact with the mounting portion side surface 52a, thereby improving the positioning accuracy in the longitudinal direction X.

[0106] In addition, the direction in which the third pressing unit 63 is screwed in is not limited to the longitudinal direction X, and can be appropriately changed. However, in the case of adopting a structure in which the third pressing unit 63 is screwed in from above, there is a possibility that the third pressing unit 63 becomes an obstacle when storing the optical fiber scrap in the storage space S. Therefore, the third pressing unit 63 is preferably screwed in from a direction other than above (for example, the longitudinal direction X).

[0107] As described above, the optical fiber cutting device 1 involved in this embodiment comprises: a base portion 20, which can carry the optical fiber holder 30 for holding the optical fiber F; and a main body portion 10, which has a scar application knife 11 for applying scars to the optical fiber F, and the main body portion 10 has a first mounting portion 50A and a second mounting portion 50B on which the base portion 20 can be mounted. When the scar application knife 11 is located at a position to apply a scar to the optical fiber F, the first mounting portion 50A and the second mounting portion 50B are located at positions on the opposite sides of each other with respect to the scar application knife 11, and the first mounting portion 50A, the scar application knife 11 and the second mounting portion 50B are arranged in one direction (length direction X).

[0108] With this configuration, the usability of the optical fiber cutting device 1 can be improved regardless of the dominant hand of the user and the orientation (front and back) of the optical fiber cutting device 1 .

[0109] In addition, the base 20 has a mounting surface 21a on which the optical fiber holder 30 is mounted, the main body 10 has a clamp 12 for clamping the optical fiber F, the clamp 12 has a clamp surface 12a for supporting the clamped optical fiber F, the mounting surface 21a when the base 20 is mounted on the first mounting portion 50A, and the mounting surface 21a when the base 20 mounted on the first mounting portion 50A is mounted on the second mounting portion 50B are substantially parallel to the clamp surface 12a, and the distance d3A between the mounting surface 21a and the clamp surface 12a when the base 20 is mounted on the first mounting portion 50A is substantially equal to the distance d3B between the mounting surface 21a and the clamp surface 12a when the base 20 mounted on the first mounting portion 50A is mounted on the second mounting portion 50B. With this structure, the mounting surface 21a and the clamp surface 12a can be easily positioned in the vertical direction Z. In addition, the mounting surface 21a and the clamp surface 12a can be easily made parallel. Furthermore, even when the pedestal portion 20 is mounted on either the first mounting portion 50A or the second mounting portion 50B, the placement surface 21 a and the jig surface 12 a in the up-down direction Z can be positioned appropriately.

[0110] In addition, the base 20 has a first positioning surface 21b parallel to the mounting surface 21a, the first mounting portion 50A has a first mounting portion bottom surface (first mounting portion surface) 51aA parallel to the first positioning surface 21b, and the second mounting portion 50B has a second mounting portion bottom surface (second mounting portion surface) 51aB parallel to the first positioning surface 21b. When the base 20 is mounted on the first mounting portion 50A, the first positioning surface 21b is in surface contact with the first mounting portion bottom surface 51aA, and when the base 20 is mounted on the second mounting portion 50B, the first positioning surface 21b is in surface contact with the second mounting portion bottom surface 51aB. With this structure, the mounting surface 21a and the fixture surface 12a can be positioned more easily in the vertical direction Z.

[0111] In addition, the base 20 has a first pressing unit (first pressing portion) 61, which presses the first positioning surface 21b against the first mounting portion bottom surface 51aA or the second mounting portion bottom surface 51aB when the base 20 is mounted on the first mounting portion 50A or the second mounting portion 50B. With this structure, the positioning accuracy of the placement surface 21a in the vertical direction Z can be further improved.

[0112] In addition, the base part 20 has two or more first positioning surfaces 21b. With this structure, the positioning accuracy of the placement surface 21a in the vertical direction Z can be further improved.

[0113] In addition, the pedestal 20 includes: a first side edge 21A located on one side of the cross direction Y intersecting with the direction (longitudinal direction X, vertical direction Z) in which the pedestal 20 is mounted on the first mounting portion 50A or the second mounting portion 50B; and a second side edge 21B located on the opposite side of the first side edge 21A in the cross direction Y, and the pedestal 20 includes a first positioning surface 21bA provided on the first side edge 21A and a first positioning surface 21bB provided on the second side edge 21B. By providing the first positioning surfaces 21bA and 21bB on both side edges 21A and 21B in the cross direction Y, the pedestal 20 can be mounted on the mounting portions 50A and 50B in a balanced manner in the vertical direction Z, compared with the case where the first positioning surface 21b is provided to one side (+Y side) or the other side (-Y side) of the cross direction Y. As a result, the positioning accuracy of the placement surface 21a in the vertical direction Z can be further improved.

[0114] In addition, the base part 20 has a protrusion 23 that protrudes in the longitudinal direction X (a first direction parallel to the mounting surface 21a in the direction of mounting the base part 20 on the first mounting part 50A or the second mounting part 50B), the first mounting part 50A has a first fitting recess 53A for fitting the protrusion 23 when mounting the base part 20, and the second mounting part 50B has a second fitting recess 53B for fitting the protrusion 23 when mounting the base part 20. With this structure, the mounting surface 21a can be easily positioned in the cross direction Y and the vertical direction Z.

[0115] In addition, the cross-sectional shape of the protrusion 23 perpendicular to the longitudinal direction X is a circular shape, and the cross-sectional shape of the first fitting recess 53A or the second fitting recess 53B perpendicular to the longitudinal direction X is an elliptical shape whose major axis extends along the direction intersecting the mounting surface 21a (the vertical direction Z). When the protrusion 23 and the fitting recess 53A, 53B are in such a shape, a space is generated between the protrusion 23 and the fitting recess 53A, 53B due to the elliptical cross-sectional shape of the fitting recess 53A, 53B. Therefore, the protrusion 23 easily moves in the vertical direction Z through the space by the amount generated by the space. As a result, the first positioning surface 21b is also easy to move in the vertical direction Z, and the position of the first positioning surface 21b in the vertical direction Z can be determined at a desired position with high accuracy. Therefore, for example, assuming that the first pressing unit 61 presses the first positioning surface 21b against the mounting portion bottom surface 51aA, 51aB, the possibility of the problem of the loss of positioning of the first positioning surface 21b and the mounting portion bottom surface 51aA, 51aB in the vertical direction Z can be reduced compared to the case where such a shape is not provided. Assuming that the protrusion 23 and the fitting recess 53A, 53B do not have such a shape, the protrusion 23 and the fitting recess 53A, 53B are easy to contact. If the protrusion 23 and the fitting recess 53 are in contact in the vertical direction Z, for example, the following problem may occur: the first positioning surface 21b and the mounting portion bottom surface 51aA, 51aB are lost in the vertical direction Z by the first pressing unit 61 pressing the first positioning surface 21b against the mounting portion bottom surface 51aA, 51aB. The possibility of such a problem can be reduced by the protrusion 23 and the fitting recess 53A, 53B having the above-mentioned shape. That is, a decrease in the positioning accuracy of the placement surface 21 a in the up-down direction Z can be suppressed.

[0116] In addition, the base 20 has a second positioning surface 22a intersecting the longitudinal direction X, the first mounting portion 50A has a first mounting portion side surface 52aA that abuts (surface contacts) the second positioning surface 22a when the base 20 is mounted, and the second mounting portion 50B has a second mounting portion side surface 52aB that abuts (surface contacts) the second positioning surface 22a when the base 20 is mounted. With this structure, the placement surface 21a and the scar application knife 11 can be easily positioned in the longitudinal direction X. In addition, the base 20 can be mounted on the mounting portions 50A and 50B in a balanced manner in the longitudinal direction X. Therefore, the positioning accuracy of the placement surface 21a in the longitudinal direction X can be further improved.

[0117] In addition, when the scar applying knife 11 is located at a position for applying a scar to the optical fiber F, the distance d2A between the first mounting portion side surface 52aA and the scar applying knife 11 in the normal direction (length direction X) of the first mounting portion side surface 52aA is substantially equal to the distance d2B between the second mounting portion side surface 52aB and the scar applying knife 11 in the normal direction (length direction X) of the second mounting portion side surface 52aB. With this structure, even when the base 20 is mounted on either the first mounting portion 50A or the second mounting portion 50B, the positioning of the mounting surface 21a and the scar applying knife 11 in the length direction X can be appropriately performed.

[0118] In addition, the base 20 has a second pressing unit (second pressing portion) 62, which presses the second positioning surface 22a against the first mounting portion side surface 52aA or the second mounting portion side surface 52aB when the base 20 is mounted on the first mounting portion 50A or the second mounting portion 50B. With this structure, the positioning accuracy of the mounting surface 21a in the longitudinal direction X can be further improved.

[0119] In addition, the optical fiber cutting device 1 according to the present embodiment further includes a waste box 40 having a storage space S capable of storing optical fiber waste generated from the optical fiber F and capable of being mounted on each of the first mounting portion 50A and the second mounting portion 50B. With this structure, the usability of the optical fiber cutting device 1 can be further improved.

[0120] In addition, the waste box unit 40 has a third pressing unit (third pressing portion) 63, which presses the waste box unit 40 against the first mounting portion 50A or the second mounting portion 50B when the waste box unit 40 is mounted on the first mounting portion 50A or the second mounting portion 50B. With this structure, the waste box unit 40 can be easily positioned.

[0121] In addition, the technical scope of the present invention is not limited to the above-mentioned embodiment, and various changes can be added within the scope not departing from the gist of the present invention.

[0122] For example, as long as the loading surface 21a is parallel to the fixture surface 12a when the first positioning surface 21b contacts the bottom surface 51a of the mounting portion, the first positioning surface 21b may not be parallel to the loading surface 21a, and the bottom surface 51a of the mounting portion may not be parallel to the fixture surface 12a. For example, the normal line of the first positioning surface 21b and the normal line of the bottom surface 51a of the mounting portion may also be inclined relative to the up-down direction Z. However, the structure in which the first positioning surface 21b is parallel to the loading surface 21a (the bottom surface 51a of the mounting portion is parallel to the fixture surface 12a) has the advantage of being easy to position compared to the structure in which they are not parallel. Specifically, it is possible to suppress the first positioning surface 21b and the bottom surface 51a of the mounting portion from being arranged at an inclination to each other, so that the gravity in the inclination direction can be suppressed from acting on the pedestal 20. Therefore, compared with the case in which the first positioning surface 21b and the bottom surface 51a of the mounting portion are arranged at an inclination to each other, the first positioning surface 21b can be stably arranged on the bottom surface 51a of the mounting portion.

[0123] In addition, as long as the placement surface 21a and the fixture surface 12a can be positioned in the cross direction Y, the protrusion 23 does not have to protrude in the longitudinal direction X. For example, the protrusion 23 may be provided on the lower surface of the placement portion 21, and the protrusion 23 may protrude in the vertical direction Z (a second direction intersecting the placement surface 21a in the direction of mounting the pedestal portion 20 on the first mounting portion 50A or the second mounting portion 50B). The direction in which the protrusion 23 protrudes may be appropriately changed as long as it is a direction intersecting the cross direction Y. However, the structure in which the protrusion 23 protrudes in the longitudinal direction X has the advantage of being easier to position than the structure in which the protrusion 23 protrudes in other directions.

[0124] In addition, the optical fiber cutting device 1 may not include the waste box portion 40 .

[0125] In addition, as long as the first positioning surface 21b can be pressed against the bottom surface 51a of the mounting portion, the first pressing unit 61 may not be a screw, and the type of the first pressing unit 61 may be appropriately changed. For example, the first pressing unit 61 may be a magnet, etc. Similarly, as long as the second positioning surface 22a can be pressed against the side surface 52a of the mounting portion, the type of the second pressing unit 62 may be appropriately changed. As long as the third positioning surface 41c can be pressed against the side surface 52a of the mounting portion, the type of the third pressing unit 63 may be appropriately changed.

[0126] In addition, the base part 20 (or the optical fiber holder 30, the waste box part 40) and the main body 10 may each include a communication unit, and communication for authentication is performed between the base part 20 (the optical fiber holder 30, the waste box part 40) and the main body 10. In addition, the optical fiber cutting device 1 may include an alarm unit that issues an alarm when the base part 20 (or the waste box part 40) is not properly mounted on the mounting part 50.

[0127] In addition, the optical fiber cutting device 1 may include only one mounting portion 50. Even in this case, by using the base portion 20 and the mounting portion 50 having the features described in the above embodiment, it is possible to provide an optical fiber cutting device 1 that can easily position the base portion 20 relative to the main body 10 (the scar applying knife 11 and the clamp surface 12a).

[0128] In addition, the components in the above-described embodiment may be appropriately replaced with known components without departing from the gist of the present invention, and the above-described embodiment and modified examples may be appropriately combined.

Claims

1. An optical fiber cutting device, characterized in that: have: A base portion capable of mounting an optical fiber holder for holding an optical fiber; and The main body has a scar-making knife for making scars on the optical fiber. The main body has a first mounting portion and a second mounting portion on which the pedestal portion can be mounted. When the scar applying knife is located at a position to apply a scar to the optical fiber, the first mounting portion and the second mounting portion are located at opposite sides of each other with respect to the scar applying knife, and the first mounting portion, the scar applying knife and the second mounting portion are arranged in one direction.

2. The optical fiber cutting device according to claim 1, characterized in that: The base portion has a mounting surface on which the optical fiber holder is mounted. The main body has a clamp for clamping the optical fiber. The clamp has a clamp surface supporting the clamped optical fiber, The mounting surface when the pedestal is mounted on the first mounting portion and the mounting surface when the pedestal mounted on the first mounting portion is mounted on the second mounting portion are substantially parallel to the fixture surface. The distance between the mounting surface and the clamp surface when the pedestal portion is mounted on the first mounting portion is substantially equal to the distance between the mounting surface and the clamp surface when the pedestal portion mounted on the first mounting portion is mounted on the second mounting portion.

3. The optical fiber cutting device according to claim 2, characterized in that: The base portion has a first positioning surface parallel to the mounting surface. The first mounting portion has a first mounting portion surface parallel to the first positioning surface, The second mounting portion has a second mounting portion surface parallel to the first positioning surface, When the pedestal is mounted on the first mounting portion, the first positioning surface is in surface contact with the first mounting portion surface. When the pedestal portion is mounted on the second mounting portion, the first positioning surface is in surface contact with the second mounting portion surface.

4. The optical fiber cutting device according to claim 3, characterized in that: The pedestal portion includes a first pressing portion configured to press the first positioning surface toward the first mounting portion surface or the second mounting portion surface when the pedestal portion is mounted on the first mounting portion or the second mounting portion.

5. The optical fiber cutting device according to claim 3 or 4, characterized in that: The base portion has two or more first positioning surfaces.

6. The optical fiber cutting device according to claim 5, characterized in that: The pedestal portion includes: a first side edge portion located on one side of a direction intersecting a direction in which the pedestal portion is mounted on the first mounting portion or the second mounting portion; and a second side edge portion located on the opposite side of the first side edge portion in the intersecting direction. The pedestal portion includes the first positioning surface provided at the first side edge portion and the first positioning surface provided at the second side edge portion.

7. The optical fiber cutting device according to claim 1, characterized in that: The base portion has a mounting surface capable of mounting the optical fiber holder. The pedestal portion has a protrusion that protrudes in a first direction parallel to the mounting surface or in a second direction intersecting the mounting surface in a direction in which the pedestal portion is mounted on the first mounting portion or the second mounting portion. The first mounting portion has a first fitting recess into which the protrusion fits when the pedestal portion is mounted. The second mounting portion has a second fitting recess into which the protrusion is fitted when the pedestal portion is mounted.

8. The optical fiber cutting device according to claim 2 or 3, characterized in that: The pedestal portion has a protrusion that protrudes in a first direction parallel to the mounting surface or in a second direction intersecting the mounting surface in a direction in which the pedestal portion is mounted on the first mounting portion or the second mounting portion. The first mounting portion has a first fitting recess into which the protrusion fits when the pedestal portion is mounted. The second mounting portion has a second fitting recess into which the protrusion is fitted when the pedestal portion is mounted.

9. The optical fiber cutting device according to claim 7, characterized in that: The cross-sectional shape of the protrusion perpendicular to the first direction is circular, A cross-sectional shape of the first fitting recess or the second fitting recess perpendicular to the first direction is an elliptical shape whose major axis extends in a direction intersecting the mounting surface.

10. The optical fiber cutting device according to any one of claims 2 to 4 and 7, characterized in that: The pedestal has a second positioning surface intersecting a first direction parallel to the mounting surface in a direction of mounting the pedestal on the first mounting portion or the second mounting portion. The first mounting portion has a first mounting portion side surface that is in surface contact with the second positioning surface when the pedestal portion is mounted. The second mounting portion has a second mounting portion side surface that comes into surface contact with the second positioning surface when the pedestal portion is mounted.

11. The optical fiber cutting device according to claim 10, characterized in that: When the scar applying knife is located at a position to apply a scar to the optical fiber, the distance between the side surface of the first mounting part and the scar applying knife in the normal direction of the side surface of the first mounting part is approximately equal to the distance between the side surface of the second mounting part and the scar applying knife in the normal direction of the side surface of the second mounting part.

12. The optical fiber cutting device according to claim 10, characterized in that: The base portion includes a second pressing portion that presses the second positioning surface toward a side surface of the first mounting portion or a side surface of the second mounting portion when the base portion is mounted on the first mounting portion or the second mounting portion.

13. The optical fiber cutting device according to any one of claims 1 to 4 and 7, characterized in that: A waste box portion is further provided. The waste box portion has a storage space capable of storing optical fiber waste generated from the optical fiber and can be mounted on each of the first mounting portion and the second mounting portion.

14. The optical fiber cutting device according to claim 13, characterized in that: The waste box portion has a third pressing portion that presses the waste box portion toward the first mounting portion or the second mounting portion when the waste box portion is mounted on the first mounting portion or the second mounting portion.

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