Small-size one-driving-two mechanical optical switch

Abstract

The invention relates to an optical conduction component, in particular to a small-size one-to-two mechanical optical switch, which comprises a relay body and an extension arm arranged on the relay body, and is characterized in that the extension arm is connected with a wedge lens, four-hole tubes are arranged on two sides of the wedge lens respectively, a single-fiber collimator is mounted on one of the four-hole tubes, and a single-fiber collimator is mounted on the other of the four-hole tubes. A double-fiber collimator is mounted on the other four-hole tube; a light conduction pipe is arranged between the two four-hole pipes, a light shielding sleeve is arranged in the light conduction pipe, and an insertion opening matched with the wedge-surface lens is formed in one side of the light conduction pipe; the relay body is provided with a plurality of PINs, the plurality of PINs are divided into two rows, and the extension arm is provided with an electromagnetic structure used for driving the wedge lens to go in and out of the socket. The optical switch provided by the invention has a one-to-two function, and when an optical fiber is broken or transmission faults of other routes occur, the optical switch provided by the invention is utilized to realize signal roundabout routing and switch from a main route to a standby route, so that uninterrupted communication is ensured.

Description

Technical Field

[0001] The invention relates to a light-conducting component, in particular to a small-sized one-to-two mechanical optical switch. Background Art

[0002] With the rapid development of optical communication technology and the widespread application of DWDM technology, optical fiber is not only widely used in backbone networks, but is also being extended to metropolitan area networks and access networks, and is gradually penetrating into thousands of households (FTTH).

[0003] Optical switches can directly realize functions such as self-healing protection and routing selection of optical paths in optical communications, overcome the electronic bottleneck of optical-electrical-optical conversion, and fully reflect the characteristics of large-capacity, high-speed transmission and switching of optical networks. It can be widely used in optical network protection, optical signal up / down channel multiplexing / demultiplexing (OADM), optical cross connectors (OXC), testing of optical fiber communication system components, channel monitoring and testing of optical fiber networks, etc., and is gradually becoming a basic component for information exchange in optical networks.

[0004] However, most conventional optical switches currently use circuit module control to achieve switching. When the optical fiber is broken or other route transmission failures occur, there will be a gap in the switching between the main route and the backup route, and communication will be interrupted. Summary of the invention

[0005] The object of the present invention is to provide a small-sized one-to-two mechanical optical switch to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A small-sized one-to-two mechanical optical switch comprises a relay body, an extension arm is arranged on the relay body, and the extension arm is connected to a wedge lens; A four-hole tube is arranged on each side of the wedge lens, a single-fiber collimator is installed on one of the four-hole tubes, and a double-fiber collimator is installed on the other four-hole tube; A light transmission tube is arranged between the two four-hole tubes, a light-proof sleeve is arranged inside the light transmission tube, and a socket matched with a wedge-face lens is arranged on one side of the light transmission tube; The relay body is provided with a plurality of PIN pins, which are divided into two rows, and the extension arm is provided with an electromagnetic structure for driving the wedge lens to enter and exit the socket; When the wedge lens enters the socket, the two PIN pins on one row of PIN pins are powered off, and the two PIN pins on the other row of PIN pins are powered on; When the wedge-shaped lens is withdrawn from the socket, two PIN pins on one row of PIN pins are powered on, two PIN pins on the other row of PIN pins are powered off, and the light-proof sleeve closes the socket.

[0007] The small-sized one-to-two mechanical optical switch as described above: the electromagnetic structure is connected to the plug-in component, and the wedge-face lens is embedded in the plug-in component; An elastic cavity and a sleeve channel which are in communication with each other are formed inside the light transmission tube, a light-shielding sleeve is slidably arranged in the elastic cavity and the sleeve channel, and a second spring connecting the light-shielding sleeve and the inner wall of the light transmission tube is also arranged in the elastic cavity; Wherein, a section of the plug-in component corresponding to the socket has an inclined surface, and a head end of the light-shielding sleeve is formed with a conical surface.

[0008] The small-sized one-to-two mechanical optical switch as described above: the light-transmitting tube is divided into two parts, namely a first tube body and a second tube body; A sleeve channel is formed inside the second tube body, the tail end of the light-shielding sleeve is slidably engaged in the sleeve channel, and a step is formed outside the head end of the light-shielding sleeve, the step dividing the outer wall of the light-shielding sleeve into a thick diameter section and a thin diameter section; The conical surface is arranged at the end of the thick diameter section, the second spring is sleeved outside the thin diameter section, one end of the second spring abuts against the step, the other end of the second spring abuts against the tail end surface of the elastic cavity, and the tail end of the thin diameter section is slidably engaged in the sleeve; The socket is arranged on the first tube body, one side of the socket is flush with the head end surface of the elastic cavity, and lugs are arranged on the outer walls of the first tube body and the second tube body.

[0009] The small-sized one-to-two mechanical optical switch as described above: the electromagnetic structure comprises two electromagnetic drivers mounted on the extension arm, a slider is arranged between the two electromagnetic drivers, the slider is fixedly connected to the plug-in, and the slider is also slidably matched with the extension arm; Two PIN pins on one row of PIN pins correspond to two card pins on one docking frame through two wiring terminals; The two PIN pins on the other row of PIN pins correspond to the two card pins on another docking frame through the other two wiring terminals; The two docking frames are arranged one high and one low, and are both connected with a pull rod, and the pull rod is connected with the plug-in piece.

[0010] The small-sized one-to-two mechanical optical switch as described above: a pin module is installed on each side of the relay body, the wiring terminal is arranged on the pin module, and the pin module is connected to the PIN pin; Each pin module is provided with a row of wiring terminals, the wiring terminals matching the card pins are located at the head and tail of the same row of wiring terminals, and the remaining wiring terminals are connected to the connector; A central module is installed at the central position of the relay body, two groups of guide columns are fixedly arranged on the central module, and guide holes which are slidably matched with the guide columns are opened on the docking frame.

[0011] The small-sized one-to-two mechanical optical switch as described above: the central module is provided with a pull hole, the pull rod is slidably matched with the pull hole, a stopper is fixedly mounted on the pull rod, and the central module is provided with a receiving hole; A first spring is arranged in the accommodating hole. The first spring is sleeved on the outside of a section of the pull rod, and one end of the first spring abuts against the inner wall of the accommodating hole, and the other end of the first spring abuts against the stopper.

[0012] As described above, the small-sized one-to-two mechanical optical switch: a convex column is fixedly provided at one end of the pull rod close to the light-transmitting tube, an insertion channel is provided on the plug-in component, and straight grooves are provided on both sides of the plug-in component, the straight grooves are connected to the insertion channel, and the convex column is slidably engaged in the straight grooves.

[0013] The small-sized one-to-two mechanical optical switch as described above: two groups of first fixing columns and second fixing columns are fixed on the pull rod, and the first fixing columns and the second fixing columns are distributed vertically; The first fixing column and the second fixing column are located on both sides of the pull rod, one end of the first fixing column is rotatably connected to the upper end of one set of hinge rods, and the lower end of the hinge rod is connected to the docking frame on the same side through a set of extension columns; One end of the second fixed column is rotatably connected to the lower end of another set of hinge rods, and the upper end of the hinge rod is connected to the docking frame on the same side through another set of extension columns.

[0014] The small-sized one-to-two mechanical optical switch as described above: the pull rod is a two-section structure, and the two sections are connected by a fixing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the single-fiber collimator is used as the optical input end, and when the wedge lens does not enter the optical transmission tube, the optical path is output through one of the pigtails of the dual-fiber collimator; when the wedge lens enters the optical transmission tube, firstly, the local PIN pin of the relay body is switched on and off to realize the switching between the main route and the backup route; secondly, the optical path is refracted by the wedge lens to output through the other pigtail of the dual-fiber collimator; in this way, the optical switch in the present invention has a one-to-two function, and when the optical fiber is broken or other route transmission failures occur, the optical switch in the present invention is used to realize the signal detour route, switching from the main route to the backup route, thereby ensuring uninterrupted communication.

[0016] In addition, when the wedge lens exits the socket, the socket can be sealed with the help of a light-proof sleeve to prevent scattering, refraction, and diffuse reflection of the light signal in the light-transmitting tube and the eight-hole tube, thereby ensuring the consistency of the light signal as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a small-sized one-to-two mechanical optical switch.

[0018] Figure 2 This is a structural diagram of another aspect of a small-sized one-to-two mechanical optical switch.

[0019] Figure 3 This is a schematic diagram of the partially disassembled structure of a small-sized one-to-two mechanical optical switch.

[0020] Figure 4 It is a schematic diagram of the structure of the eight-hole tube and the extension arm.

[0021] Figure 5 This is a schematic diagram of the structure of the eight-hole tube after disassembly.

[0022] Figure 6 It is a schematic diagram of the structure of the plug-in component and the light transmission tube.

[0023] Figure 7 For Figure 6 Schematic diagram of the structure after removing the central module.

[0024] Figure 8 for Figure 7 Schematic diagram of the structure from another perspective.

[0025] Fig. 9 It is a schematic diagram of the structure of the pull rod and the docking frames on both sides.

[0026] Fig.10 for Fig. 9 Enlarged view of point A in the middle.

[0027] Fig.11 It is a schematic diagram of the structure after a section of the pull rod is removed from the insertion channel.

[0028] Fig.12 It is a front view of the light transmission tube.

[0029] Fig.13 for Fig.12 MM section view.

[0030] Fig.14 for Fig.13 Schematic diagram of the three-dimensional structure.

[0031] Fig.15 for Fig.14 Disassembly diagram of .

[0032] Fig.16 for Fig.15 Stereoscopic diagram.

[0033] In the figure: 1. relay body; 2. dual-fiber collimator; 3. single-fiber collimator; 4. extension arm; 5. wedge lens; 6. light-transmitting tube; 61. first tube body; 62. second tube body; 601. socket; 602. sleeve; 603. elastic cavity; 7. PIN pin; 8. plug-in; 801. socket; 802. straight groove; 9. central module; 901. accommodating hole; 902. guide column; 903. pull hole; 10. pin module; 11. electromagnetic driver; 12. slider; 13. terminal block; 14. connector; 15. docking frame; 16. clamping foot; 17. pull rod; 1701. fixing plate; 1702. convex column; 18. first spring; 19. stopper; 20. first fixing column; 21. second fixing column; 22. hinge rod; 23. extension column; 24. light-shielding sleeve; 25. second spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] See also Figure 1 to Figure 16 As an embodiment of the present invention, the small-sized one-to-two mechanical optical switch comprises a relay body 1, an extension arm 4 is arranged on the relay body 1, and the extension arm 4 is connected to a wedge lens 5; A four-hole tube is arranged on each side of the wedge lens 5, a single-fiber collimator 3 is installed on one of the four-hole tubes, and a double-fiber collimator 2 is installed on the other four-hole tube, and the two four-hole tubes form an eight-hole tube; A light transmission tube 6 is arranged between the two four-hole tubes, a light-shielding sleeve 24 is arranged inside the light transmission tube 6, and a socket 601 adapted to the wedge-face lens 5 is arranged on one side of the light transmission tube 6; The relay body 1 is provided with a plurality of PIN pins 7, which are divided into two rows, and the extension arm 4 is provided with an electromagnetic structure for driving the wedge lens 5 to enter and exit the socket 601; When the wedge lens 5 enters the socket 601, two PIN pins 7 on one row of PIN pins 7 are powered off, and two PIN pins 7 on another row of PIN pins 7 are powered on; When the wedge-shaped lens 5 is withdrawn from the socket 601 , two PIN pins 7 on one row of PIN pins 7 are powered on, and two PIN pins 7 on another row of PIN pins 7 are powered off, and the light-shielding sleeve 24 closes the socket 601 .

[0036] In this embodiment, the single-fiber collimator 3 serves as the optical input end. When the wedge lens 5 does not enter the optical transmission tube 6, the optical path is output through one of the pigtails of the dual-fiber collimator 2. When the wedge lens 5 enters the optical transmission tube 6, the local PIN pin 7 of the relay body 1 is firstly switched on and off to realize the switching between the main route and the backup route. Secondly, the optical path is refracted by the wedge lens 5 to be output through the other pigtail of the dual-fiber collimator 2. In this way, the optical switch in the present invention has a one-to-two function. When the optical fiber is broken or other route transmission failures occur, the optical switch in the present invention is used to realize the signal detour route, switching from the main route to the backup route, to ensure uninterrupted communication.

[0037] In addition, when the wedge lens 5 exits the socket 601, the socket 601 can be sealed with the aid of the light-shielding sleeve 24 to prevent the light signal from being scattered, refracted, and diffusely reflected in the light-transmitting tube 6 and the eight-hole tube, thereby ensuring the consistency of the light signal as much as possible.

[0038] As a further solution of the present invention, the electromagnetic structure is connected to the plug-in component 8, and the wedge lens 5 is embedded in the plug-in component 8; The light transmission tube 6 has an elastic cavity 603 and a sleeve 602 that are connected to each other. The light-shielding sleeve 24 is slidably arranged in the elastic cavity 603 and the sleeve 602. A second spring 25 connecting the light-shielding sleeve 24 and the inner wall of the light transmission tube 6 is also arranged in the elastic cavity 603. The section of the plug-in component 8 corresponding to the socket 601 has an inclined surface, and the head end of the light-shielding sleeve 24 has a conical surface.

[0039] In this embodiment, when the plug-in component 8 carries the wedge-shaped lens 5 through the socket 601 and enters the interior of the light-transmitting tube 6, a section of the inclined surface on the plug-in component 8 contacts the conical surface at the head end of the light-shielding sleeve 24 and squeezes the conical surface backward, thereby driving the light-shielding sleeve 24 to retreat and further compress the second spring 25.

[0040] When the insert 8 and the wedge lens 5 are withdrawn from the socket 601, the second spring 25 can drive the light-shielding sleeve 24 to close the socket 601, so that a nearly complete cylindrical channel is formed inside the light-transmitting tube 6 for the light path to be output along a predetermined route.

[0041] As a further solution of the present invention, in order to facilitate the placement of the light-shielding sleeve 24 and the second spring 25 into the elastic cavity 603, the light-transmitting tube 6 is divided into two parts, namely a first tube body 61 and a second tube body 62; A sleeve 602 is formed inside the second tube body 62, and the tail end of the light-shielding sleeve 24 is slidably engaged in the sleeve 602. A step is formed outside the head end of the light-shielding sleeve 24, and the step divides the outer wall of the light-shielding sleeve 24 into a thick diameter section and a thin diameter section. The conical surface is arranged at the end of the thick diameter section, the second spring 25 is sleeved outside the thin diameter section, and one end of the second spring 25 abuts against the step, and the other end of the second spring 25 abuts against the tail end surface of the elastic cavity 603, and the tail end of the thin diameter section is slidably engaged in the sleeve 602; The socket 601 is arranged on the first tube body 61 , one side of the socket 601 is flush with the head end surface of the elastic cavity 603 , and lugs are arranged on the outer walls of the first tube body 61 and the second tube body 62 .

[0042] In this embodiment, the first tube body 61 and the second tube body 62 can be fixedly connected via the lugs to form a complete light transmission tube 6 .

[0043] It should be noted that one side of the wedge-surface lens 5 is a plane and is parallel to the head end face of the elastic cavity 603, and the other side of the wedge-surface lens 5 is parallel to the inclined surface on the plug-in piece 8. A through hole is formed on the plug-in piece 8, and the wedge-surface lens 5 is embedded in the through hole, and both sides of the wedge-surface lens 5 are lower than the plug-in piece 8; in this way, the light-shielding sleeve 24 can be driven to give way and reset through the interaction between the plug-in piece 8 and the conical surface of the head end of the light-shielding sleeve 24, and the wedge-surface lens 5 will not directly rub against the light-shielding sleeve 24, thereby ensuring that the surface of the wedge-surface lens 5 is not worn.

[0044] As a further solution of the present invention, the electromagnetic structure includes two electromagnetic drivers 11 installed on the extension arm 4, a slider 12 is arranged between the two electromagnetic drivers 11, the slider 12 is fixedly connected to the plug-in 8, and the slider 12 is also slidably matched with the extension arm 4; Two PIN pins 7 on one row of PIN pins 7 correspond to two clamping pins 16 on one docking frame 15 through two wiring terminals 13; Two PIN pins 7 on another row of PIN pins 7 correspond to two clamping pins 16 on another docking frame 15 through two other wiring terminals 13; The two docking frames 15 are arranged one high and one low, and both are connected to the pull rod 17 , and the pull rod 17 is connected to the plug-in piece 8 .

[0045] In this embodiment, two electromagnetic drivers 11 drive the slider 12 to move, thereby driving the plug-in member 8 and the wedge-shaped lens 5 fixed on the plug-in member 8 to enter and exit the socket 601; In the process of the plug-in component 8 driving the wedge lens 5 in and out of the socket 601, the two docking frames 15 are also driven to rise and fall through the pull rod 17, wherein the two clamping pins 16 on the descending docking frame 15 are clamped into the corresponding two wiring terminals 13 to energize them, and finally the two PIN pins 7 on the corresponding row are energized; while the two clamping pins 16 on the ascending docking frame 15 are detached from the other two wiring terminals 13 to cut off the power.

[0046] As a further solution of the present invention, a pin module 10 is installed on each side of the relay body 1, the connection terminal 13 is arranged on the pin module 10, and the pin module 10 is connected to the PIN pin 7; Each pin module 10 is provided with a row of connection terminals 13, the connection terminals 13 matched with the card pins 16 are located at the head and the tail of the same row of connection terminals 13, and the remaining connection terminals 13 are connected to the connector 14; A central module 9 is installed at the central position of the relay body 1 , and two groups of guide pillars 902 are fixedly arranged on the central module 9 . The docking frame 15 is provided with guide holes that are slidably matched with the guide pillars 902 .

[0047] In this embodiment, the first and last two terminals 13 in one row of terminals 13 correspond to PIN1 and PIN5 of PIN pins 7 respectively, and the first and last two terminals 13 in another row of terminals 13 correspond to PIN6 and PIN10 of PIN pins 7 respectively.

[0048] PIN2, PIN3, and PIN4 are connected to the three connectors 14 on one side, and PIN7, PIN8, and PIN9 are connected to the three connectors 14 on the other side.

[0049] The guide posts 902 cooperate with the guide holes so that the docking frames 15 on both sides can only perform lifting movements.

[0050] As a further solution of the present invention, a pull hole 903 is provided on the central module 9, the pull rod 17 is slidably matched with the pull hole 903, a stopper 19 is fixedly installed on the pull rod 17, and a receiving hole 901 is provided on the central module 9; A first spring 18 is disposed in the accommodating hole 901 . The first spring 18 is sleeved on the outside of a section of the pull rod 17 , and one end of the first spring 18 abuts against the inner wall of the accommodating hole 901 , and the other end of the first spring 18 abuts against the stopper 19 .

[0051] In this embodiment, the stopper 19 and the accommodating hole 901, as well as the first spring 18 in the accommodating hole 901, can keep the pull rod 17 always having a tendency to move away from the eight-hole tube, thereby ensuring that when the slider 12 moves away from the formation end point of the eight-hole tube (i.e., the wedge-shaped lens 5 is outside the light-transmitting tube 6), PIN1 and PIN5 remain in a powered-on state, and PIN6 and PIN10 remain in a powered-off state; and when the electromagnetic driver 11 drives the wedge-shaped lens 5 to be inside the light-transmitting tube 6 through the slider 12 and the plug-in member 8, PIN1 and PIN5 are switched to a powered-off state, and PIN6 and PIN10 are switched to a powered-on state.

[0052] As a further solution of the present invention, a protrusion 1702 is fixedly provided at one end of the pull rod 17 close to the light-conducting tube 6, an insertion channel 801 is opened on the plug-in component 8, and straight grooves 802 are provided on both sides of the plug-in component 8. The straight grooves 802 are connected to the insertion channel 801, and the protrusion 1702 is slidably engaged in the straight grooves 802.

[0053] In this embodiment, when the plug-in member 8 carries the wedge-face lens 5 into the interior of the light-transmitting tube 6 through the socket 601, in the initial stage, the first spring 18 always gives the pull rod 17 a tendency to move away from the eight-hole tube. Therefore, the protrusion 1702 slides in the straight groove 802, and the pull rod 17 also slides in the insertion channel 801, so that the pull rod 17 remains stationary.

[0054] When the protruding column 1702 reaches the end of the straight groove 802, as the plug-in component 8 continues to be inserted into the light-transmitting tube 6 with the wedge-shaped lens 5, the plug-in component 8 will drive the protruding column 1702 to approach the light-transmitting tube 6, thereby driving the pull rod 17 to move in the direction of approaching the light-transmitting tube 6 and further compressing the first spring 18; this will drive the two docking frames 15 to rise and fall, so that the two clamping feet 16 on the descending docking frame 15 are clamped into the corresponding two wiring terminals 13, and the two clamping feet 16 on the ascending docking frame 15 are detached from the other two wiring terminals 13 to cut off the power.

[0055] As a further solution of the present invention, two groups of first fixing columns 20 and second fixing columns 21 are fixed on the pull rod 17, and the first fixing columns 20 and the second fixing columns 21 are distributed up and down; The first fixing column 20 and the second fixing column 21 are located on both sides of the pull rod 17, one end of the first fixing column 20 is rotatably connected to the upper end of one set of hinge rods 22, and the lower end of the hinge rod 22 is connected to the docking frame 15 on the same side through a set of extension columns 23; One end of the second fixing column 21 is rotatably connected to the lower end of another set of hinge rods 22 , and the upper end of the hinge rods 22 is connected to the docking frame 15 on the same side via another set of extension columns 23 .

[0056] Specifically, the hinge rod 22 is rotatably connected to the extension column 23 , and the extension column 23 is fixed on the docking frame 15 .

[0057] In this embodiment, when the pull rod 17 approaches the light-transmitting tube 6, the first fixing column 20 drives the extension column 23 on the same side to move upward through the hinge rod 22 on the same side, thereby driving the docking frame 15 on the same side to rise; The second fixing column 21 drives the extension column 23 on the same side to move downward through the hinge rod 22 on the same side, thereby driving the docking frame 15 on the same side to move downward.

[0058] As a further solution of the present invention, in order to conveniently and quickly insert the pull rod 17 into the pull hole 903, the pull rod 17 is configured as a two-section structure, and the two sections are connected by a fixing plate 1701.

[0059] In this embodiment, the fixing sheet 1701 is provided so that the two sections of the pull rod 17 can be inserted into the pull hole 903 and then connected together through the fixing sheet 1701 to form a whole pull rod 17 .

[0060] The above embodiments are exemplary rather than restrictive, so the technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic features of the present invention are all included in the present invention.

Claims

1. A small-sized one-to-two mechanical optical switch, comprising a relay body with an extension arm provided on the relay body, characterized in that: The extension arm is connected to the wedge lens, and a four-hole tube is provided on each side of the wedge lens, wherein a single-fiber collimator is installed on one of the four-hole tubes, and a double-fiber collimator is installed on the other four-hole tube; A light transmission tube is arranged between the two four-hole tubes, a light-proof sleeve is arranged inside the light transmission tube, and a socket adapted to the wedge lens is arranged on one side of the light transmission tube; The relay body is provided with multiple PIN pins, which are divided into two rows. The extension arm is provided with an electromagnetic structure for driving the wedge lens in and out of the socket; When the wedge lens enters the socket, the two PIN pins on one row of PIN pins are powered off, and the two PIN pins on the other row of PIN pins are powered on; When the wedge lens is withdrawn from the socket, two PIN pins on one row of PIN pins are energized, and two PIN pins on the other row of PIN pins are de-energized, and the light-proof sleeve closes the socket.

2. The small-sized one-to-two mechanical optical switch according to claim 1, characterized in that: The electromagnetic structure is connected to the plug-in component, and the wedge lens is embedded in the plug-in component; An elastic cavity and a sleeve communicating with each other are formed inside the light transmission tube, a light-shielding sleeve is slidably arranged in the elastic cavity and the sleeve, and a second spring connecting the light-shielding sleeve and the inner wall of the light transmission tube is also arranged in the elastic cavity; A section of the plug-in component corresponding to the socket is provided with an inclined surface, and a head end of the light-shielding sleeve is formed with a cone surface.

3. The small-sized one-to-two mechanical optical switch according to claim 2, characterized in that: The light transmission tube is composed of two parts, namely a first tube body and a second tube body; A sleeve is formed inside the second tube body, and the tail end of the light-shielding sleeve is slidably engaged in the sleeve. A step is formed on the outside of the head end of the light-shielding sleeve, and the step divides the outer wall of the light-shielding sleeve into a thick diameter section and a thin diameter section; The conical surface is provided at the end of the large diameter section, the second spring is sleeved on the outside of the small diameter section, one end of the second spring abuts against the step, the other end of the second spring abuts against the tail end surface of the elastic cavity, and the tail end of the small diameter section is slidably engaged in the sleeve; The socket is arranged on the first tube body, one side of the socket is flush with the head end surface of the elastic cavity, and lugs are arranged on the outer walls of the first tube body and the second tube body.

4. The small-sized one-to-two mechanical optical switch according to claim 2, characterized in that: The electromagnetic structure includes two electromagnetic drivers mounted on the extension arm, a slider is provided between the two electromagnetic drivers, the slider is fixedly connected to the plug-in member, and the slider is also slidably engaged with the extension arm; The two PIN pins on one row of PIN pins correspond to the two card pins on one of the docking frames through two wiring terminals; The two PIN pins on the other row of PIN pins correspond to the two card pins on another docking frame through two other wiring terminals; The two docking frames are arranged one high and one low, and both are connected with pull rods, and the pull rods are connected with the plug-in parts.

5. The small-sized one-to-two mechanical optical switch according to claim 4, characterized in that: A pin module is installed on each side of the relay body, the connection terminal is set on the pin module, and the pin module is connected to the PIN pin; Each pin module is provided with a row of wiring terminals. The wiring terminals that match the card pins are located at the beginning and end of the same row of wiring terminals, and the remaining wiring terminals are connected to the connector; A central module is installed at the central position of the relay body. Two groups of guide columns are fixedly arranged on the central module. The docking frame is provided with guide holes that are slidably matched with the guide columns.

6. The small-sized one-to-two mechanical optical switch according to claim 5, characterized in that: The central module is provided with a pull hole, a pull rod is slidably engaged with the pull hole, a stopper is fixedly mounted on the pull rod, and a receiving hole is provided on the central module; A first spring is arranged in the accommodating hole. The first spring is sleeved on the outside of a section of the pull rod, and one end of the first spring contacts the inner wall of the accommodating hole, and the other end of the first spring contacts the stopper.

7. The small-sized one-to-two mechanical optical switch according to claim 4, characterized in that: A protruding column is fixedly provided at one end of the pull rod close to the light transmission tube, an insertion channel is provided on the plug-in component, and straight grooves are provided on both sides of the plug-in component. The straight grooves are connected to the insertion channel, and the protruding column is slidably embedded in the straight grooves.

8. The small-sized one-to-two mechanical optical switch according to claim 4, characterized in that: Two groups of first fixing columns and second fixing columns are fixed on the pull rod, and the first fixing columns and the second fixing columns are distributed up and down; The first fixing column and the second fixing column are located on both sides of the pull rod, one end of the first fixing column is rotatably connected to the upper end of one set of hinge rods, and the lower end of the hinge rod is connected to the docking frame on the same side through a set of extension columns; One end of the second fixed column is rotatably connected to the lower end of another set of hinge rods, and the upper end of the hinge rod is connected to the docking frame on the same side through another set of extension columns.

9. The small-sized one-to-two mechanical optical switch according to claim 4, characterized in that: The pull rod is a two-section structure, and the two sections are connected by a fixing plate.

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