JP2018205723A - Changeover mechanism of changeover switch - Google Patents

Abstract

To provide a changeover mechanism of a changeover switch which can be easily operated within a range of mechanical accuracy without the necessity for a power supply, a complicated procedure and the skill of a user.SOLUTION: A changeover mechanism 10 for switching a connecting state of connecting ports 127, 129 of a changeover switch 90 is arranged so as to abut on an abutted face 130 for adding a force for returning energization forces of springs 170A, 170B, and an abutted face 134 for adding a force for returning energization forces of springs 170C to 170E, and a side face 20r is rotatably arranged so as to abut on the abutted face 130. The changeover mechanism comprises: a column body 20 having abutment faces 22A, 22B and 22C which are equal in distances from rotation centers at the side face 20r; a column body 40 which is arranged so that a side face 40r abuts on the abutted face 134, and has a plurality of abutment faces 42A, 42B and 42C which are different in distances from rotation centers at the side face 40r; and a connecting part 60 for rotating the column body 40 behind a start of the rotation of the column body 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a switching mechanism of a changeover switch.

  In general, a changeover switch capable of switching a plurality of light beams that have passed through an optical waveguide such as an optical fiber to a plurality of prepared different optical paths is a spatial optical component using a condensing lens, a mirror, or the like as disclosed in Patent Document 1. It is configured on the basis. The reduction of insertion loss of these changeover switches has been promoted, and a changeover switch having a relatively low insertion loss of less than 1 dB has been realized.

  However, when the above-mentioned changeover switch is used in combination with a measuring device for optical path switching using a spatial optical component, a dead zone may be created due to Fresnel reflection at the switching portion, and a portion that cannot be measured may occur. there were. As an optical path switching measuring instrument, for example, there is a measuring instrument that receives and measures Rayleigh scattered light of an optical fiber based on OTDR (Optical Time Domain Reflecto-meter). In order to cope with the situation as described above and realize a changeover switch that suppresses Fresnel reflection, a method of switching by physically connecting an optical fiber or the like is effective (for example, see Patent Document 2).

  In addition to the changeover switch that suppresses Fresnel reflection as described above, for example, as shown in Patent Documents 2 and 3, a changeover method using an optical waveguide has been proposed. In the optical path changeover switch described in Patent Document 2 and the optical fiber core line switching device described in Patent Document 3, switching is performed by devising an optical waveguide axis alignment method.

JP 2014-67004 A JP-A-6-300979 JP 2014-77919 A

  A common single mode fiber has a core diameter of about 10 μm. When an optical waveguide such as an optical fiber is physically connected, it is necessary to align the core in accordance with the core diameter. However, due to the current accuracy of mechanical control, it is difficult to manually realize an alignment mechanism with an accuracy of 10 μm or less, and connection loss may increase or switching may not be performed normally. . On the other hand, a solution to suppress the above-mentioned mechanical accuracy range using an optical fiber with an expanded core diameter is also conceivable, but the propagation mode of guided light becomes multi-mode and the insertion loss increases. was there.

  Therefore, as a changeover switch that allows errors in the mechanical control mechanism, an alignment mechanism that aligns the input port, the plurality of output ports, the axis of the input port and the axis of one of the plurality of output ports. And a changeover switch with the In such a change-over switch, the plurality of output ports are arranged so as to be parallel to the axial direction at predetermined intervals in a direction orthogonal to the axial direction. Further, the alignment mechanism includes a fitting portion provided on the input surface facing the input port, and a fitted portion provided on the output surface facing the output port and capable of fitting into the fitting portion. Yes.

  In the above-mentioned changeover switch, taking advantage of the characteristics of optical fiber, a single mode is maintained especially in SMF (Single Mode Fiber), and the output port connected to the input port has a low loss within a range that allows an error in mechanical accuracy. And the Fresnel reflection can be suppressed. However, when the above-described changeover switch is actually used, a switching mechanism that switches the output port connected to the input port to a desired output port is required. In particular, for the purpose of enabling the above-mentioned changeover switch to be used as an emergency signal transmission source of the user in an emergency, it does not require a power source and can be easily and without complicated procedures and user skill. There has been a demand for a switching mechanism (switching mechanism of a changeover switch) that can operate within the range of machine accuracy.

  The present invention has been made in view of the above-described problems, and does not require a power source, and can be easily operated within a range of machine accuracy without complicated procedures and user skill. The purpose is to provide.

  The changeover mechanism of the changeover switch concerning the present invention is a changeover mechanism of the changeover switch which changes the connection state of a connection port, and the changeover switch includes a fixed first member and a second movable in a plane. A member, a first urging means for urging the second member in the direction of the first member, and a second urging means for urging the second member in the direction of the switching mechanism; Each of the first member and the second member has connection ports that can be connected to each other on opposing surfaces, the opposing surfaces are brought into contact with each other, and the connection ports are connected to each other, At least one of the first member and the second member has a plurality of connection ports, and the second member applies a force to push back the force urged by the first urging means. The first abutted surface and the second urging means urge A second abutted surface for applying a force to push back, and the switching mechanism is rotatably arranged such that the side surface abuts on the first abutted surface, and the side surface is rotated from the center of rotation. A first column having a plurality of first abutting planes that are equal in distance to each other and rotatable in accordance with the rotation of the first column so that the side surface abuts on the second abutted surface. A second column having a plurality of second contact planes arranged on the side surfaces and having different distances from the rotation center, and the second column rotated after the start of rotation of the first column And a connecting portion to be provided.

  In the changeover mechanism of the changeover switch, the connecting portion is formed on the connecting member fixed to one of the first pillar and the second pillar and the other, and the connecting member moves inside. It has a possible recessed part, and the elastic body which connects the said connection member and the said recessed part, It is characterized by the above-mentioned.

  In the switching mechanism of the changeover switch, when the second abutted surface and the second abutting plane are in contact, the first abutted surface and the first abutting plane A gap exists between the two.

  In the switching mechanism of the changeover switch, the first column body includes a positioning portion when the first contacted surface and the first contact flat surface are in contact with each other.

  In the changeover mechanism of the changeover switch, each of the first member and the second member has fitting portions that can be fitted to each other on opposite surfaces.

  According to the change-over mechanism of the change-over switch according to the present invention, it is possible to operate easily and with the required accuracy without requiring a power source, without complicated procedures and user skill, and the connection port of the change-over switch. The connection state can be switched.

It is a top view of the changeover switch provided with the change mechanism in this embodiment. It is an enlarged plan view which shows the connection state of the connection port of an input part, and the connection port of an output part. It is sectional drawing at the time of seeing a change-over switch by the II-II line of FIG. FIG. 4 is a cross-sectional view of the changeover switch taken along the line III-III in FIG. 3. It is sectional drawing at the time of seeing a switching mechanism by the IV-IV line of FIG. FIG. 5 is a cross-sectional view when the switching mechanism is viewed along the line VV in FIG. 4. It is sectional drawing at the time of seeing the switching mechanism at the time of starting a handle | steering-wheel by the IV-IV line. It is sectional drawing at the time of seeing the switching mechanism at the time of FIG. 7 by the VV line. FIG. 9 is an enlarged plan view showing a proximity state of an input unit and an output unit in the state of FIGS. It is sectional drawing at the time of seeing the switching mechanism when the handle | steering-wheel is further rotated from the state of FIG. 7 by the IV-IV line. It is sectional drawing at the time of seeing the switching mechanism at the time of FIG. 10 by the VV line. It is sectional drawing at the time of seeing the switching mechanism when the handle | steering-wheel is further rotated from the state of FIG. 10 by the IV-IV line. It is sectional drawing at the time of seeing the switching mechanism at the time of FIG. 12 by the VV line. FIG. 14 is an enlarged plan view showing a proximity state of the input unit and the output unit in the state of FIGS. It is sectional drawing at the time of seeing the switching mechanism at the time of finishing a handle | steering-wheel by the IV-IV line. It is sectional drawing at the time of seeing the switching mechanism at the time of FIG. 15 by the VV line. FIG. 17 is an enlarged plan view showing a connection state of the connection port of the input unit and the connection port of the output unit in the state of FIGS.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The drawings used in the following description are schematic, and ratios of length, width, thickness, etc. are not necessarily the same as actual ones, and can be changed as appropriate, and the effects of the present invention Has been changed as appropriate so that it can be easily understood.

[Changeover switch]
The changeover switch 90 provided with the changeover mechanism 10 of this embodiment is demonstrated.

  FIG. 1 is a plan view of a changeover switch 90 provided with a changeover mechanism 10 according to the present embodiment. The changeover switch 90 shown in the figure is a switch for switching the connection state between the connection port 129 of the input unit 114 and the connection ports 127A, 127B, and 127C (hereinafter sometimes referred to as “connection port 127”) of the output unit 112. . The changeover switch 90 switches so that the connection port 129 is connected to any one of the connection ports 127A, 127B, and 127C. The size of the changeover switch 90 is about 70 mm × 70 mm. This size is an example, and is not limited to this size.

  First, the input unit 114 and the output unit 112 will be described.

  The input unit 114 and the output unit 112 are configured by a planar lightwave circuit (PLC). The connection ports 127 and 129 are constituted by single-mode optical waveguides that form the core of the PLC. Since the shape of such an optical waveguide is rectangular in a plan view and a side view, it is easy to change and adjust the height and width of the optical waveguide, and the height of the optical waveguide is reduced and only the width is increased. You can also. In the present embodiment, the relative refractive index difference, the height, and the width of the rectangular optical waveguide are appropriately adjusted, and are set to the size of the waveguide that allows an error in mechanical accuracy.

  The optical fiber 104 is connected to the left side of the input unit 114 in the figure, and the optical waveguide 105 of the optical fiber 104 is connected to the optical waveguide of the input unit 114. The connection port 129 is on the right side of the optical waveguide of the input unit 114 in the drawing. The end surface of the connection port 129 is exposed at the connected surface 114 a facing the output unit 112.

  The output unit 112 includes three connection ports 127A, 127B, and 127C arranged at a predetermined interval Λ along the K direction in the drawing. The left side of the optical waveguide of the output unit 112 in the drawing is the connection ports 127A, 127B, and 127C. The predetermined interval Λ is, for example, 250 μm and corresponds to twice the outer diameter of a normal single mode optical fiber of 125 μm. The end surfaces of the connection ports 127A, 127B, and 127C are exposed at the connected surface 112a that faces the input unit 114. The optical fiber 107 is connected to the right side of the output unit 112 in the drawing, and the optical waveguides 108A, 108B, and 108C of the optical fiber 107 are connected to the optical waveguides of the output unit 112, respectively.

  The connected surfaces 112a and 114a facing each other of the input unit 114 and the output unit 112 are brought into contact with each other to connect the connection port 129 to any one of the connection ports 127A, 127B, and 127C. By changing the position of the input unit 114 in the K direction and bringing the input unit 114 and the output unit 112 into contact with each other, the connection ports 127A, 127B, and 127C connected to the connection port 129 can be switched. Note that the input unit 114 may include a plurality of connection ports, and the output unit 112 may include one connection port. Alternatively, each of the input unit 114 and the output unit 112 may include a plurality of connection ports.

  The optical fibers 104 and 107 are, for example, ITU-TG. A standard single-mode fiber such as 652D. The core center of the optical waveguide of the input unit 114 and the core center of the optical waveguide 105 of the optical fiber 104 are aligned and connected to each other. The three optical waveguides 108A, 108B, 108C of the optical fiber 107 are arranged at a predetermined interval Λ along the K direction. The core centers of the optical waveguides of the output unit 112 and the core centers of the optical waveguides 108A, 108B, and 108C are aligned and connected to each other.

  The width dimension (that is, the dimension in the K direction) of the connection surface 129 of the connection port 129 is larger than the width dimension of the optical waveguide of the input unit 114. The width dimension of each of the connection ports 127A, 127B, and 127C on the connected surface 112a is equal to the width dimension of the connection port 129 on the connected surface 114a, and is larger than the width dimension of the optical waveguide of the output unit 112. That is, the output side end portion 129e of the connection port 129 and the input side end portion 127f of the connection port 127 have a so-called tapered shape in plan view. The plan view shape of the connection port 127 is the same as the plan view shape in which the input side and the output side of the connection port 129 are interchanged. Specifically, the width dimension of the connection port 129 is substantially constant on the input side, and is formed so that the width dimension gradually increases toward the output side of the connection port 129. On the other hand, the width dimension of the connection port 127 is formed so that the width dimension gradually decreases toward the output side on the input side, and is substantially constant on the output side.

  As shown in FIG. 2, as a centering mechanism for aligning the axis of the connection port 129 and the axis of any of the connection ports 127A, 127B, 127C, a fitting portion 120 is provided on the connected surface 112a, and the connected surface 114a. Is provided with a fitted portion 122 that can be fitted to the fitting portion 120.

  The fitting portion 120 is a V-shaped protrusion that protrudes from the connected surface 112a in plan view. The width dimension along the K direction of the fitting part 120 decreases as the input part 114 is approached along the J direction. The fitted portion 122 is a V-shaped groove that is recessed inward from the connected surface 114a in plan view. The width dimension along the K direction of the fitted part 122 decreases as the distance from the output part 112 increases along the J direction. The interval between the fitting parts 120 adjacent to each other in the K direction and the fitted parts 122 is 250 μm, similarly to the predetermined gap Λ.

  By providing the alignment mechanism composed of the fitting portion 120 and the fitted portion 122, a general error in mechanical accuracy can be sufficiently allowed.

  In this embodiment, the fitting portion 120 and the fitted portion 122 are provided near the connection ports 127 and 129, but the fitting portion 120 and the fitted portion 122 are provided anywhere on the connected surfaces 112a and 114a. Also good. The fitting portion 120 may be provided on the connected surface 114a, and the fitting portion 122 may be provided on the connected surface 112a. Or the fitting part 120 and the to-be-fitted part 122 do not need to be provided.

  Next, the arrangement of the output unit 112 and the input unit 114 will be described.

  The output unit 112 is fixed on the base 165, and the base 165 is fixed to the base 100 via the support member 155. That is, the output unit 112 is fixed and disposed in the changeover switch 90 so as not to move.

  The input unit 114 is fixed on the base 166, and an extending part 110 extending in the K direction is connected to the left side (side to which the optical fiber 104 is connected) of the base 166. The base 166 is movably disposed on a support member 156 fixed to the base 100. That is, the input unit 114, the base 166, and the extending unit 110 are arranged so as to be movable together. You may comprise the base 166 and the extension part 110 integrally.

  In the present embodiment, the connection port 129 of the input unit 114 and the connection port 127C formed at the bottom of the output unit 112 in the drawing are connected, and the lower side of the base 166 that fixes the input unit 114 is connected. The surface (contacted surface 134) and the lower surface of the base 165 that fixes the output unit 112 are on the same plane. In this state, the contacted surface 134 of the base 166 is supported by being in contact with a surface perpendicular to the K direction of the support members 155 and 156 so that the base 166 does not move further downward in the drawing.

  The springs 170A and 170B are arranged on the left side of the extending portion 110, and urge the input portion 114, the base 166, and the extending portion 110 toward the output portion 112 along the J direction. The connected surfaces 112a and 114a are brought into close contact with each other by the springs 170A and 170B, and the connection between the connection port 129 and the connection port 127 is kept good.

  The springs 170C, 170D, and 170E are disposed on the upper side of the base 166, and urge the base 166 toward the switching mechanism 10 along the K direction. The base 166 is pressed against the switching mechanism 10 by the springs 170C, 170D, and 170E. As will be described in detail later, the switching mechanism 10 determines the position of the input unit 114 in the K direction, and the connection states of the connection ports 127 and 129 are switched.

  The springs 170F and 170G are arranged on the front side of the input unit 114 in FIG. 1 to suppress the input unit 114 from floating and restrict the movement of the input unit 114, the base 166, and the extending unit 110 to a plane.

  As the springs 170A to 170G, for example, coil springs inserted into holes formed in the base 100 of the changeover switch 90 are used. A bolt or a pin is inserted from the outside of the changeover switch 90 to hold one end of the coil spring. The other end of the coil spring is brought into contact with the extending part 110, the base 166, and the input part 114. The other end of the coil spring may or may not be bonded to the extending portion 110, the base 166, and the input portion 114.

  As long as the springs 170 </ b> A to 170 </ b> G energize the extending part 110, the base 166, and the input part 114, leaf springs or the like may be used. In this embodiment, the extension part 110, the base 166, and the input part 114 are pressed and urged by the springs 170A to 170G. However, the extension part 110, the base 166, and the input part 114 are pulled and desired. The direction may be biased.

[Switching mechanism]
Next, the switching mechanism 10 of this embodiment will be described.

  In FIG. 1, the switching mechanism 10 is in contact with the contact surface 130 of the extension portion 110 and the contact surface 134 of the base 166 on the right side of the extension portion 110 and below the base 166. Are arranged as follows.

  As shown in FIGS. 1, 3, and 4, the switching mechanism 10 includes a columnar body 20 that is rotatably arranged in a plane including the J direction and the K direction, and a column that is coaxially rotated with the columnar body 20. The body 40 and a connecting portion 60 that rotates the column body 40 with a delay from the start of rotation of the column body 20 are provided. The columnar body 20 and the columnar body 40 are independent of each other, the columnar body 20 and the columnar body 40 are overlapped with the rotation center aligned, and a rotation shaft provided with locking portions 82 and 84 at the upper and lower ends is inserted. Yes. The column body 20 and the column body 40 are connected to each other at the connecting portion 60 by inserting a pin 62 fixed to the bottom of the column body 20 into a recess 68 formed in the upper portion of the column body 40.

  As shown in FIG. 3, the side surface 20 r of the columnar body 20 is disposed so as to be in contact with the contacted surface 130 of the extending portion 110. The column body 20 applies a force to the abutted surface 130, whereby a force that pushes back the force urged by the springs 170 </ b> A and 170 </ b> B can be applied to the extending portion 110. The columnar body 20 does not contact the contacted surface 134 of the base 166.

  As shown in FIG. 4, the side surface 40 r of the column body 40 is disposed so as to come into contact with the contacted surface 134 of the base 166. When the column body 40 applies a force to the abutted surface 134, a force that pushes back the force urged by the springs 170C, 170D, and 170E can be applied to the base 166. The column body 40 does not contact the contacted surface 130 of the extending portion 110.

  A handle 30 that protrudes in the radial direction from the side surface 20 r is provided at the upper end of the column 20. When the user rotates the handle 30, the column body 20 rotates together with the handle 30, and the column body 40 starts to rotate with a delay from the start of rotation of the column body 20. Details of the operation of the switching mechanism 10 will be described later.

  As shown in FIG. 5, the columnar body 20 is a cylinder having a radius r20, and contact planes 22A, 22B, and 22C that can contact the contacted surface 130 of the extending portion 110 are formed on the side surface 20r. Yes. The contact planes 22A, 22B, and 22C form a chord of a virtual circumference E20 having a radius r20 in plan view. The distances h22 between the rotation center of the column 20 and the contact planes 22A, 22B, 22C are equal to each other. Between the contact flat surfaces 22A, 22B, and 22C, contact arcuate surfaces 23A, 23B, and 23C that can contact the contacted surface 130 are formed. The contact arc surfaces 23A, 23B, and 23C overlap with the virtual circumference E20.

  When the column 20 rotates, the ends of the contact planes 22A, 22B, and 22C or the contact arcuate surfaces 23A, 23B, and 23C push the contacted surface 130 to the left along the J direction. The base 166 and the input unit 114 are moved to the left, and the output unit 112 and the connected surfaces 112a and 114a of the input unit 114 are separated from each other.

  The distance between the connected surfaces 112a and 114a is larger than the protruding dimension protruding from the connected surface 112a along at least the J direction of the fitting portion 120, and is preferably 10% or more of the protruding dimension. More preferably, it is 30% or more of the dimension. The distance between the connected surfaces 112a and 114a is determined by the difference between the distance h22 from the center of the column 20 to the contact planes 22A, 22B, and 22C and the radius r20 of the virtual circumference E20. The difference between the distance h22 and the radius r20 is the distance at which the connected surfaces 112a and 114a are separated. When the difference between the distance h22 and the radius r20 satisfies the above-described condition, there is no possibility that the fitting unit 120 contacts the input unit 114 when the connection state between the input unit 114 and the output unit 112 is switched. 120 can be prevented from being damaged or damaged. Even when the fitting portion 120 and the fitted portion 122 are not provided, if the input portion 114 is moved in the K direction while the connected surfaces 112a and 114a are in close contact, the end faces of the connection ports 127 and 129 are not moved. There is a risk of injury. Therefore, when switching the connection state, it is necessary to separate the connected surfaces 112a and 114a.

  The column body 20 only needs to be able to push the contacted surface 130 when switching the connection state. Therefore, when the connected surfaces 112a and 114a are in close contact, that is, when the connection port 129 is connected to any one of the connection ports 127A, 127B, and 127C, the contacted surface 130 and the contact flat surfaces 22A, 22B, and 22C. There may be a gap between them. Rather, in order to improve the close contact state of the connected surfaces 112a and 114a, there should be a gap between the contacted surface 130 and the contact flat surfaces 22A, 22B, and 22C.

  The abutted surface 130 is arranged perpendicular to the abutted surface 134, but the present invention is not limited to this. It is only necessary that the input unit 114 can be moved away from the output unit 112 by pressing the abutted surface 130 by the column body 20.

  As shown in FIG. 6, the column body 40 is a cylinder having a radius r40, and contact surfaces 42A, 42B, and 42C that can contact the contacted surface 134 of the base 166 are formed on the side surface 40r. Yes. The distances h42A, h42B, and h42C between the rotation center of the column 40 and the contact planes 42A, 42B, and 42C are different from each other. That is, in the state in which the abutted surface 134 is in contact with the contact plane 42A, the state in contact with the contact plane 42B, and the state in contact with the contact plane 42C, the input portion 114 in the K direction. The positions are different, and the connection ports 127A, 127B, and 127C connected to the connection port 129 are different. The connection port 129 is connected to the connection port 127 </ b> C formed at the bottom of the output portion 112 in the drawing in a state where the contact plane 42 </ b> A having the shortest distance from the center is in contact with the contacted surface 134. . The distances h42A, h42B, and h42C are increased by a predetermined interval Λ (250 μm in this embodiment). The connection port 129 is connected to the connection port 127B in a state where the contact flat surface 42B is in contact with the contacted surface 134, and the connection port 129 is connected in a state where the contact flat surface 42C is in contact with the contacted surface 134. Is connected to the connection port 127C.

  When the connection port 129 is connected to the connection port 127C, the abutted surface 134 is supported by the support members 155 and 156, and therefore there may be a gap between the abutting plane 42A and the abutted surface 134. That is, in a state where the connection port 129 is connected to the connection port 127 </ b> C, the column body 40 does not support the base 166, and the support members 155 and 156 support the base 166. Thereby, when the connection port 129 is connected to the connection port 127C, the switching mechanism 10 is not loaded.

  A contact arc surface 43A is formed between the contact planes 42B and 42C, and the contact arc surface 43A overlaps a virtual circumference E40 having a radius r40 in plan view. No contact arc surface is formed between the contact planes 42A and 42B. The presence or absence of the contact arc surface is a design matter based on the relationship between the distances h42A, h42B, and h42C to the contact planes 42A, 42B, and 42C and the radius r40 of the virtual circumference E40, and is related to the action of the column body 40. Not what you want.

  The connecting portion 60 includes a pin 62 fixed to the bottom of the columnar body 20 and a recess 68 formed in the upper portion of the columnar body 40. The pin 62 is inserted into the recess 68 to connect the columnar body 20 and the columnar body 40. In the pin 62, the lower part 62z has a smaller diameter than the upper part 62x. The recess 68 includes a recess upper portion 69 in which the upper portion 62x of the pin 62 can move and a recess lower portion 70 in which the lower portion 62z of the pin 62 can move.

  When the column body 20 is rotated, the connecting portion 60 has a role of rotating the column body 40 with a delay from the start of the rotation of the column body 20. When the handle 30 is turned to rotate the column 20, the pin 62 moves in the recess 68. When the column 20 is further rotated, the lower portion 62z of the pin 62 pushes the inner wall of the recess lower portion 70, and the column 40 starts to rotate.

  The upper part 62 x of the pin 62 is connected to the inner wall of the concave upper part 69 by springs 64 and 66. The concave upper part 69 is wider than the concave lower part 70 in order to arrange the springs 64 and 66. The springs 64 and 66 have a role of correctly adjusting the positions of the column bodies 20 and 40 after the column bodies 20 and 40 are rotated.

  In addition, as the connection part 60, a recess may be formed in the column body 20 and a pin may be fixed to the column body 40. In this case, the column 40 starts to rotate after the inner wall of the recess of the column 20 starts to push the pin.

[Operation of switching mechanism]
Next, the operation of the switching mechanism 10 will be described.

  Assume that the connection port 127C is connected to the connection port 129 as shown in FIGS. At this time, the abutting plane 22A of the column body 20 abuts on the abutted surface 130 of the extending portion 110, and the abutting plane 42A of the column body 40 abuts on the abutted surface 134 of the base 166. Yes. The initial state is an example, and any of the connection ports 127A, 127B, and 127C connected to the connection port 129 may be set as the initial state.

  When the user rotates the handle 30 in the R direction, the column body 20 rotates together with the handle 30. As shown in FIG. 7, when the column body 20 rotates, the lower end of the contact flat surface 22 </ b> A of the column body 20 or the contact arc surface 23 </ b> A pushes the contacted surface 130, and the extended portion 110, the base 166, and the input The part 114 moves in the direction away from the output part 112 along the J direction. When the contact plane 22A pushes the contacted surface 130, the input unit 114 moves away from the output unit 112, and while the contact arc surface 23A is in contact with the contacted surface 130, the input unit 114 moves. The state where the unit 114 and the output unit 112 are separated is maintained.

  While the column body 20 starts to rotate, the pin 62 of the connecting portion 60 moves inside the recess 68, that is, after the column body 20 starts to rotate, the lower portion 62z of the pin 62 contacts the edge 70b of the recess lower portion 70. Until it comes into contact, the column 40 does not rotate. Therefore, as shown in FIG. 8, the contact flat surface 42 </ b> A of the column body 40 remains in contact with the contacted surface 134 of the base 166, and the extended portion 110, the base 166, and the K of the input portion 114. The direction position does not change.

  As shown in FIG. 9, the contact state of the connected surfaces 112a and 114a in the state of FIGS. 7 and 8 is the state where the connected surfaces 112a and 114a are separated without changing the position of the connection port 129 in the K direction. It is.

  After the lower part 62z of the pin 62 comes into contact with the edge 70b of the lower part 70 of the recess, when the handle 30 is further rotated in the R direction, as shown in FIG. Pushes the edge 70b, and the column 40 rotates in the R direction.

  When the column body 40 rotates, as shown in FIG. 11, the corner between the contact planes 42A and 42B pushes up the contacted surface 134 of the base 166, so that the extended portion 110, the base 166, and the input portion 114 moves upward along the K direction. The K direction is a direction in which the connection destination of the connection port 129 is switched.

  10 and 11, when the user further rotates the handle 30 in the R direction, the column body 40 rotates in the R direction as the column body 20 rotates.

  When the column body 40 rotates and the position of the corner between the contact planes 42A and 42B pushing the contacted surface 134 exceeds the line extending in the K direction through the center of the column body 40, the springs 170C, 170D, and 170E The urging force (the force by which the springs 170C, 170D, and 170E push the base 166 and the abutted surface 134 of the base 166 pushes the column 40) works to rotate the column 40 in the R direction. The column 40 rotates by itself in the R direction independently of the column 20.

  As a result, as shown in FIGS. 12 and 13, before the abutting plane 22 </ b> B of the column body 20 abuts against the abutted surface 130 of the extending portion 110, the column body 40 is against the abutted surface 134 of the base 166. The abutting plane 42B abuts. That is, as shown in FIG. 14, the position of the connection port 129 in the K direction is adjusted to the position corresponding to the connection port 127B with the connected surfaces 112a and 114a spaced apart. The alignment to the connection port 127B connected to the connection port 129 is completed by the rotation of the column body 40 so far.

  12 and 13, when the user further rotates the handle 30 in the R direction, the column body 20 rotates, and the extending portion 110, the base 166, and the input portion 114 are output along the J direction. Move in a direction approaching 112. As shown in FIG. 15, the input portion 114 and the output portion 112 are in contact with each other, and the contact flat surface 22 </ b> B of the columnar body 20 is in contact with the contacted surface 130 of the extending portion 110. Since the rotation of the column 40 has already been completed at the stage of FIG. 13, the state of the column 40 is not different from that of FIG. 13, as shown in FIG.

  When the column bodies 20 and 40 are rotated, the force by which the abutted surface 134 of the base 166 presses the abutting plane 42B of the column body 40 and the springs 64 and 66 of the connecting portion 60 try to return to the original state. The rotation angle of the column body 40 is finely adjusted by the force, and the connection between the connection port 129 and the connection port 127B becomes better.

  With the above operation, as shown in FIG. 17, the fitting portion 120B is fitted into the fitted portion 122, the connection port 127B is connected to the connection port 129, and the switching of the connection state is completed.

  15 and 16, when the user rotates the handle 30 in the R direction, the connection port 127A can be connected to the connection port 129 by the same operation as described above. When the handle 30 is further rotated in the R direction from the state in which the connection port 127A is connected to the connection port 129 and the handle 30 makes one turn, the connection port 127C can be connected to the connection port 129. Similarly, when the handle 30 is rotated in the V direction, the connection state can be switched.

  Note that the contact surface 134 and the contact flat surfaces 22A, 22B, and 22C are in contact with the column body 20 or the handle 30, that is, the connection port 129 is connected to any one of the connection ports 127A, 127B, and 127C. There may be provided positioning means for positioning. For example, the column body 20 or the handle 30 is provided with three recesses corresponding to each of the three connection states, and the ball plunger is disposed so that the ball plunger engages with each recess in each connection state. By providing means for positioning the column body 20 or the handle 30, the user can clearly know that the connection state has been switched, and further, the column body 20 can be moved with the connection ports 127 and 129 connected. Connection failure of the connected surfaces 112a and 114a due to slight movement can be suppressed.

  As described above, according to the present embodiment, the fixed output unit 112, the input unit 114 that can move together with the extending unit 110 and the base 166, and the input unit 114 are connected to the output unit 112. A connection port 129 of the input unit 114 of the changeover switch 90 including springs 170A and 170B biasing in the direction toward the direction and springs 170C, 170D and 170E biasing the base 166 in the direction toward the switching mechanism 10. The contact surface 130 and the springs 170C and 170D for applying a force by which the switching mechanism 10 for switching the connection state of the output unit 112 with the connection ports 127A, 127B, and 127C pushes back the biasing force of the springs 170A and 170B. , 170E is arranged so as to abut against the abutted surface 134 for applying a force to push back the urging force, and the side surface 20r abuts against the abutted surface 130. The columnar body 20 having the contact planes 22A, 22B, and 22C having the same distance from the rotation center on the side surface 20r and the side surface 40r can be rotated so as to contact the contacted surface 134. The column body 40 having a plurality of contact planes 42A, 42B, and 42C that are different in distance from the rotation center on the side surface 40r, and a connecting portion 60 that rotates the column body 40 with a delay from the start of rotation of the column body 20. With.

  As a result, when the column body 20 rotates, the extending portion 110, the base 166, and the input portion 114 move in the direction away from the output portion 112 along the J direction, and then the column body 40 starts to rotate and extends. Since the installation unit 110, the base 166, and the input unit 114 are moved in the direction of switching the connection state between the connection port 129 and the connection ports 127A, 127B, and 127C along the K direction, a power source is not required, and the column 20 The connection state of the connection ports 127 and 129 of the changeover switch 90 can be easily switched by simply rotating the handle 30 provided on the switch. Since the alignment of the connection port 129 is determined by the contact planes 42A, 42B, and 42C of the column body 40, the connection state of the connection ports 127 and 129 can be switched within the range of machine accuracy. Further, since the connection ports 127 and 129 are aligned after the connected surface 114a of the input unit 114 and the connected surface 112a of the output unit 112 are separated from each other, the end surfaces of the connection ports 127 and 129 are not damaged.

  An application example of this embodiment will be described. A change-over switch 90 including the change-over mechanism 10 according to the present embodiment is arranged in an ONU (optical line terminating device) in a user's house, the optical fiber 104 is connected to an equipment building, and the optical waveguides 108A, 108B, 108C of the optical fiber 107 are connected. Are connected to filters that reflect different wavelength test light. In normal times, for example, the optical fiber 104 is connected to the optical waveguide 108A. Even in the event of a power failure at the user's home, the switching mechanism 10 can switch the connection destination of the optical fiber 104 to the optical waveguides 108B and 108C in an emergency. By transmitting the test light from the equipment building and receiving the response signal light, the state of the changeover switch 90 can be grasped even during a power failure, and an appropriate response to the user can be implemented.

DESCRIPTION OF SYMBOLS 10 ... Switching mechanism 20, 40 ... Column 30 ... Handle 60 ... Connection part 90 ... Changeover switch 112 ... Output part 114 ... Input part 127A, 127B, 127C, 129 ... Connection port 110 ... Extension part 165,166 ... Base

Claims (5)

A changeover mechanism for a changeover switch that changes the connection state of a connection port,
The changeover switch is
A fixed first member, a second member movable in a plane, a first biasing means for biasing the second member in the direction of the first member, and the second member Second urging means for urging the member in the direction of the switching mechanism,
Each of the first member and the second member has a connection port that can be connected to each other on the opposing surfaces, the opposing surfaces are brought into contact with each other to connect the connection ports, and the first member And at least one of the second members has a plurality of connection ports,
The second member includes a first abutting surface for applying a force for pushing back the force biased by the first biasing means, and a force for pushing back the force biased by the second biasing means. A second abutted surface for adding
The switching mechanism is
A first column having a plurality of first abutting planes, the side surfaces of which are rotatably arranged so as to abut against the first abutted surface;
A plurality of second abutting planes that are disposed so as to rotate in accordance with the rotation of the first column so that the side surface abuts on the second abutted surface, and whose distances from the rotation center are different from each other on the side surface. A second pillar having
A switching mechanism for a changeover switch, comprising: a connecting portion that rotates the second pillar body after the start of rotation of the first pillar body. The connecting portion is
A connecting member fixed to one of the first pillar and the second pillar;
A recess formed on the other side, in which the connecting member is movable,
The changeover switch switching mechanism according to claim 1, further comprising: an elastic body that connects the connecting member and the recess.   There is a gap between the first contacted surface and the first contact plane when the second contacted surface and the second contact plane are in contact with each other. The changeover mechanism of the changeover switch according to claim 1 or 2 characterized by these.   The said 1st pillar body is equipped with the positioning part when said 1st to-be-contacted surface and said 1st contact plane contact | abut, It is any one of Claim 1 thru | or 3 characterized by the above-mentioned. Changeover mechanism of changeover switch.   5. The changeover switch switching mechanism according to claim 1, wherein each of the first member and the second member has a fitting portion that can be fitted to each other on opposite surfaces. 6.

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