Digital-to-analog converter for optical fiber communication

Abstract

The utility model relates to the technical field of optical fiber communication, and discloses a digital-to-analog converter for optical fiber communication, which comprises a digital-to-analog converter main body, heat dissipation holes are uniformly formed in two ends of the digital-to-analog converter main body, and fixing frames are fixedly mounted at positions, corresponding to the heat dissipation holes, of inner walls of two ends of the digital-to-analog converter main body. The digital-to-analog converter for optical fiber communication is scientific and reasonable in structure, and through the arrangement of the connecting seat, the base, the contact block, the fixed telescopic rod, the fixed clamping block, the movable telescopic rod and the movable clamping block, the digital-to-analog converter for optical fiber communication can be rapidly and stably installed during use; according to the digital-to-analog converter for optical fiber communication, the installation stability of the digital-to-analog converter for optical fiber communication in use is improved, through arrangement of heat dissipation holes, a fixing frame and an ultra-black coating, it is guaranteed that the interior of the digital-to-analog converter body cannot be aged due to the fact that external light enters the digital-to-analog converter body, the digital-to-analog converter body can be isolated and protected, and the service life of the digital-to-analog converter is prolonged. And the protection performance of the digital-to-analog converter for optical fiber communication in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to a digital-to-analog converter for optical fiber communication. Background Art

[0002] With the rapid popularization of fiber-optic communication networks around the world, miniaturized, highly sensitive, and low-loss communication equipment will become our main direction of progress. Its stability and efficiency will also be one of our main research directions. With the development of signal processing and communication technology, the speed and accuracy of conversion between digital and analog signals have huge restrictions on the system. The role of high-speed and high-precision digital-to-analog converters, that is, digital-to-analog converters DAC, is obvious. The digital-to-analog converter is a device in the field of communications that converts continuous analog signals into discrete digital signals. Its working principle is to simulate electronic switches, operational amplifiers, and reference voltage sources to convert continuous curve waveforms into digital discrete signals.

[0003] However, in daily use, the existing digital-to-analog converters on the market are installed in various locations due to their different scopes of application. After the digital-to-analog converters are directly installed in different locations, they cannot be well separated and disassembled. In addition, due to the different environments of different installation locations, the digital-to-analog converters are easily affected by external humid air, causing the digital-to-analog converters to become damp and damaged.

[0004] In view of the deficiencies in the prior art, the utility model provides a digital-to-analog converter for optical fiber communication, which has the advantages of easy disassembly and separation, light blocking protection, sealed isolation and interface protection, etc., and solves the problem that due to the different application ranges of digital-to-analog converters, digital-to-analog converters will be installed in various locations, and the digital-to-analog converters cannot be well separated and disassembled after being directly installed in different locations. In addition, due to the different environments of different installation locations, the digital-to-analog converters are easily affected by external humid air, resulting in moisture damage to the digital-to-analog converter. Utility Model Content

[0005] In order to achieve the above-mentioned purposes of easy disassembly and separation, light blocking protection, sealing isolation and interface protection, the utility model provides the following technical solutions:

[0006] A digital-to-analog converter for optical fiber communication, comprising a digital-to-analog converter body, heat dissipation holes are evenly opened at both ends of the digital-to-analog converter body, and an adjustable heat dissipation and light blocking mechanism is fixedly installed at the positions of the heat dissipation holes on the inner walls of the two ends of the digital-to-analog converter body, and the adjustable heat dissipation and light blocking mechanism comprises a fixing frame, an ultra-black coating, a placement groove and a moving plate;

[0007] A fixing frame is fixedly installed at the positions of the heat dissipation holes on the inner walls of both ends of the main body of the digital-to-analog converter, the inner wall of one end of the fixing frame is coated with an ultra-black coating, and a placement groove is symmetrically opened at one end of the fixing frame, and a movable plate is placed inside the placement groove;

[0008] A convenient separation assembly mechanism is installed at the bottom end of the digital-to-analog converter body, and the convenient separation assembly mechanism includes a connecting seat, a base and a contact block;

[0009] A connecting seat is fixedly installed at the bottom end of the digital-to-analog converter body, a base is placed at the bottom end of the connecting seat, and contact blocks are fixedly connected to both ends of the connecting seat;

[0010] A wiring protection mechanism is installed at one end of the digital-to-analog converter body, and the wiring protection mechanism includes a mounting groove, a sliding rod and a movable frame;

[0011] One end of the digital-to-analog converter body is symmetrically provided with a mounting groove, the inner wall of the mounting groove is fixedly connected with a slide bar, and the outer side of the slide bar is slidably mounted with a moving frame.

[0012] According to the above technical features, the heat dissipation and light blocking mechanism further comprises a contact gasket, a rotating head, a threaded rod, a pulley and a transmission belt;

[0013] A contact gasket is fixedly connected to the outer side of the movable plate, and a rotating head is symmetrically embedded and rotatably installed at one end of the digital-to-analog converter body corresponding to the position of the movable plate. A threaded rod is fixedly connected to one end of the rotating head, and a pulley is fixedly connected to the other end of the threaded rod. The outer side of the pulley is connected through the inner side of a transmission belt.

[0014] According to the above technical features, the thickness of the ultra-black coating is 5 mm, and the length of the ultra-black coating is smaller than the width of the fixing frame.

[0015] According to the above technical features, the threaded rod is connected to the movable plate via threads, and the outer side of the contact gasket is in contact with the inner wall of the fixing frame.

[0016] According to the above technical features, the convenient separation assembly mechanism also includes a fixed telescopic rod, a fixed card block, a fixed plate, a fixed rod, an adjustment plate, an adjustment screw, a mobile telescopic rod, a mobile card block and a mounting ear;

[0017] A fixed telescopic rod is evenly and symmetrically fixedly installed on the inner wall of one end of the base, one end of the fixed telescopic rod is fixedly connected by one end of a fixed clamping block, a fixed plate is fixedly connected to the top of the base, one end of the fixed plate is symmetrically fixedly connected to the fixed rod, an adjusting plate is placed on the outside of the fixed rod, one end of the adjusting plate is embedded with an adjusting screw for rotatable installation, a movable telescopic rod is evenly and symmetrically fixedly installed on one end of the adjusting plate, one end of the movable telescopic rod is fixedly connected by one end of a movable clamping block, and both ends of the base are symmetrically fixedly connected with mounting ears.

[0018] According to the above technical features, the bottom end of the connecting seat contacts the inner wall of the bottom end of the base, and wear-resistant sheets are attached to the outer sides of the fixed block and the movable block.

[0019] According to the above technical features, the adjusting screw and the adjusting plate are connected via threads, and the fixed block and the movable block are respectively in fit contact with the contact block.

[0020] According to the above technical features, the wiring protection mechanism also includes a reset spring, a protective cover, a desiccant plate and a contact cotton pad;

[0021] A return spring is sleeved on the outer side of the slide rod, a protective cover is fixedly connected to one end of the movable frame, a desiccant plate is connected to the inner wall of the protective cover, and a contact cotton pad is connected to the inner wall of the desiccant plate.

[0022] According to the above technical features, a contact pad is installed at the connection between the two protective covers, and the other end of the return spring is in contact with one end of the moving frame.

[0023] According to the above technical features, bolts are embedded and installed at the position of the desiccant plate on the outer side of the protective cover, and the desiccant plate and the protective cover are installed by bolts.

[0024] Compared with the prior art, the utility model provides a digital-to-analog converter for optical fiber communication, which has the following beneficial effects:

[0025] 1. By setting the connection seat, base, contact block, fixed telescopic rod, fixed clamping block, mobile telescopic rod and mobile clamping block, the base can be placed at the installation position, and the base can be fixedly installed at the installation position using external bolts and mounting ears, and the connection seat and the contact block are moved down to the inside of the base, and the contact block will contact with the fixed clamping block and the mobile clamping block, so that the fixed telescopic rod and the mobile telescopic rod will shrink, and combined with the rebound of the fixed telescopic rod and the mobile telescopic rod, the fixed clamping block and the mobile clamping block can be moved to fit with the contact block, so that the fixed clamping block and the mobile clamping block are used to clamp the contact block, so that the base is used to stably support and place the main body of the digital-to-analog converter, and the digital-to-analog converter for optical fiber communication is quickly and stably installed when in use;

[0026] By setting the fixed plate, fixed rod, adjustment plate, adjustment screw and movable telescopic rod, the adjustment screw can be rotated. Combined with the threaded connection between the adjustment screw and the adjustment plate, the adjustment plate, movable telescopic rod and movable card block can be driven to move, so that the movable card block is separated from the contact block, so that the connecting seat and the base can be quickly disassembled and separated, thereby improving the installation stability of the digital-to-analog converter for optical fiber communication when in use, and also increasing the convenience of disassembly and separation of the digital-to-analog converter for optical fiber communication when in use.

[0027] 2. Through the heat dissipation holes, fixing frames and ultra-black coating, the heat dissipation holes can be used to dissipate heat inside the main body of the digital-to-analog converter, and the ultra-black coating can also be used to absorb the light entering through the heat dissipation holes, thereby ensuring that the main body of the digital-to-analog converter will not age due to the entry of external light;

[0028] The rotating head can also be rotated to drive the threaded rod to rotate, so that the movable plate moves along the placement groove, and drives the movable plate to move until the contact gasket contacts the inner wall of the fixed frame, and the movable plate and the fixed frame are used to separate the digital-to-analog converter body from the outside world, so as to achieve the effect of isolating and protecting the digital-to-analog converter body, and thus can ensure the stable operation of the digital-to-analog converter body in a cold and humid environment, and will not cause rust and damage inside the digital-to-analog converter body due to humid air, thereby ensuring the isolation protection of the digital-to-analog converter for optical fiber communication when in use, and improving the protection performance of the digital-to-analog converter for optical fiber communication when in use.

[0029] 3. Through the wiring protection mechanism, when the optical fiber is inserted into the main interface of the digital-to-analog converter, the optical fiber connection port contacts the two protective covers respectively, so that the protective cover and the movable frame move along the installation slot, drive the reset spring to contract, and move the protective cover to the outside of the optical fiber interface. The protective cover is used to provide contact protection for the outside of the optical fiber interface. Combined with the desiccant plate on the inner wall of the protective cover, the connection between the optical fiber interface and the main interface of the digital-to-analog converter can be dried and protected, reducing the moisture caused by external water vapor between the optical fiber interface and the main interface of the digital-to-analog converter.

[0030] The contact cotton pad inside the protective cover can provide buffer protection when the protective cover contacts the optical fiber interface, thereby ensuring the stability of the optical fiber interface when connected to the interface of the digital-to-analog converter body, avoiding loosening and separation between the optical fiber and the digital-to-analog converter body caused by accidental external contact, improving the stability of the connection between the light and the digital-to-analog converter body, and increasing the interface protection performance when the digital-to-analog converter for optical fiber communication is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0032] In the attached picture:

[0033] Figure 1 It is a structural schematic diagram of the utility model;

[0034] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0035] Figure 3 It is a structural schematic diagram of the utility model's heat dissipation and light blocking mechanism;

[0036] Figure 4 It is a schematic diagram of the installation structure of the rotating head and the threaded rod of the utility model;

[0037] Figure 5 It is a structural schematic diagram of the convenient separation and assembly mechanism of the utility model;

[0038] Figure 6 It is a schematic diagram of the installation structure of the adjusting plate and the adjusting screw of the utility model;

[0039] Figure 7 It is a structural schematic diagram of the wiring protection mechanism of the utility model;

[0040] Numbers in the figure: 1, main body of the digital-to-analog converter; 2, heat dissipation holes;

[0041] 3. Adjust heat dissipation and light blocking mechanism; 301. Fixing frame; 302. Ultra-black coating; 303. Placement slot; 304. Moving plate; 305. Contact pad; 306. Rotating head; 307. Threaded rod; 308. Pulley; 309. Transmission belt;

[0042] 4. Convenient separation and assembly mechanism; 401. Connecting seat; 402. Base; 403. Contact block; 404. Fixed telescopic rod; 405. Fixed card block; 406. Fixed plate; 407. Fixed rod; 408. Adjustment plate; 409. Adjustment screw; 410. Mobile telescopic rod; 411. Mobile card block; 412. Mounting ear;

[0043] 5. Wiring protection mechanism; 501. Mounting slot; 502. Sliding rod; 503. Moving frame; 504. Reset spring; 505. Protective cover; 506. Desiccant plate; 507. Contact cotton pad. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0045] Embodiment: The utility model provides a technical solution, a digital-to-analog converter for optical fiber communication, such as Figure 1-7 As shown, it includes a digital-to-analog converter body 1, heat dissipation holes 2 are evenly opened at both ends of the digital-to-analog converter body 1, and heat dissipation and light blocking mechanisms 3 are fixedly installed at the positions of the heat dissipation holes 2 on the inner walls of the two ends of the digital-to-analog converter body 1, and the heat dissipation and light blocking mechanisms 3 include a fixing frame 301, an ultra-black coating 302, a placement slot 303 and a moving plate 304;

[0046] A fixing frame 301 is fixedly installed at the positions of the heat dissipation holes 2 on the inner walls of both ends of the main body 1 of the digital-to-analog converter. The inner wall of one end of the fixing frame 301 is coated with an ultra-black coating 302. The thickness of the ultra-black coating 302 is 5 mm, and the length of the ultra-black coating 302 is smaller than the width of the fixing frame 301, thereby improving the ultra-black coating 302's absorption effect on the light entering the heat dissipation holes 2. A placement groove 303 is symmetrically opened at one end of the fixing frame 301, and a movable plate 304 is placed inside the placement groove 303.

[0047] The heat dissipation and light blocking mechanism 3 further comprises a contact pad 305, a rotating head 306, a threaded rod 307, a pulley 308 and a transmission belt 309;

[0048] A contact gasket 305 is fixedly connected to the outer side of the movable plate 304, and the outer side of the contact gasket 305 contacts the inner wall of the fixed frame 301, so that the contact gasket 305 can be used to seal the connection between the fixed frame 301 and the movable plate 304. One end of the digital-to-analog converter body 1 is symmetrically embedded and rotatably installed at the position corresponding to the movable plate 304. A threaded rod 307 is fixedly connected to one end of the rotating head 306. The threaded rod 307 is threadedly connected to the movable plate 304, so that the movable plate 304 can be moved when the threaded rod 307 rotates. A pulley 308 is fixedly connected to the other end of the threaded rod 307, and the outer side of the pulley 308 is connected to the inner side of a transmission belt 309.

[0049] A convenient separation assembly mechanism 4 is installed at the bottom end of the digital-to-analog converter body 1, and the convenient separation assembly mechanism 4 includes a connecting seat 401, a base 402 and a contact block 403;

[0050] A connection base 401 is fixedly installed at the bottom end of the digital-to-analog converter body 1, and a base 402 is placed at the bottom end of the connection base 401. The bottom end of the connection base 401 contacts the inner wall of the bottom end of the base 402. The contact between the base 402 and the connection base 401 can be used to stabilize the digital-to-analog converter body 1 and the base 402. Both ends of the connection base 401 are fixedly connected with contact blocks 403.

[0051] The convenient separation assembly mechanism 4 also includes a fixed telescopic rod 404, a fixed block 405, a fixed plate 406, a fixed rod 407, an adjustment plate 408, an adjustment screw 409, a movable telescopic rod 410, a movable block 411 and a mounting ear 412;

[0052] A fixed telescopic rod 404 is evenly and symmetrically fixedly installed on the inner wall of one end of the base 402, and one end of the fixed telescopic rod 404 is fixedly connected through one end of a fixed block 405. A fixed plate 406 is fixedly connected to the top of the base 402, and one end of the fixed plate 406 is symmetrically fixedly connected to a fixed rod 407. An adjustment plate 408 is placed on the outer side of the fixed rod 407, and an adjustment screw 409 is embedded and rotatably installed at one end of the adjustment plate 408. The adjustment screw 409 and the adjustment plate 408 are connected by a thread, so that when the adjustment screw 409 rotates, the adjustment plate 408 is driven to move along the fixed rod 407. The movable telescopic rod 410 is evenly and symmetrically fixedly installed at one end of the adjustment plate 408, and one end of the movable telescopic rod 410 is fixedly connected through one end of the movable clamping block 411. The fixed clamping block 405 and the movable clamping block 411 are respectively fitted and contacted with the contact block 403, so that the contact block 403 can be used to facilitate the contact and connection between the fixed clamping block 405 and the movable clamping block 411. Wear-resistant sheets are attached to the outer sides of the fixed clamping block 405 and the movable clamping block 411, which improves the wear resistance of the outer sides of the fixed clamping block 405 and the movable clamping block 411. The two ends of the base 402 are symmetrically fixedly connected with mounting ears 412.

[0053] A wiring protection mechanism 5 is installed at one end of the digital-to-analog converter body 1, and the wiring protection mechanism 5 includes a mounting groove 501, a sliding rod 502 and a moving frame 503;

[0054] A mounting groove 501 is symmetrically provided at one end of the main body 1 of the digital-to-analog converter. A slide bar 502 is fixedly connected to the inner wall of the mounting groove 501. A movable frame 503 is slidably installed on the outer side of the slide bar 502.

[0055] The wiring protection mechanism 5 also includes a reset spring 504, a protective cover 505, a desiccant plate 506 and a contact cotton pad 507;

[0056] A return spring 504 is sleeved on the outer side of the slide bar 502, and the other end of the return spring 504 contacts one end of the moving frame 503, so that the return spring 504 can be used to press the moving frame 503. A protective cover 505 is fixedly connected to one end of the moving frame 503, and a contact pad is installed at the connection between the two protective covers 505 to improve the softness of the two protective covers 505 when they are in contact. A desiccant plate 506 is connected to the inner wall of the protective cover 505, and bolts are embedded and installed at the position of the desiccant plate 506 on the outer side of the protective cover 505 corresponding to the position of the desiccant plate 506, and the desiccant plate 506 and the protective cover 505 are installed by bolts, which is convenient for installation and disassembly between the desiccant plate 506 and the protective cover 505, and a contact cotton pad 507 is connected to the inner wall of the desiccant plate 506.

[0057] Working principle: When installing the digital-to-analog converter for optical fiber communication, the base 402 can be placed at the installation position, and the base 402 can be fixed at the installation position using external bolts and mounting ears 412. Then, the main body 1 of the digital-to-analog converter is placed on the top of the base 402, so that the connecting seat 401 and the contact block 403 move down to the inside of the base 402, and the contact block 403 will contact the fixed card block 405 and the movable card block 411, and cause the fixed telescopic rod 404 and the movable telescopic rod 410 to contract. As the connecting seat 401 moves down to contact the inner wall of the base 402, the contact block 403 will move to separate from the fixed card block 405 and the movable card block 411. Combined with the rebound of the fixed telescopic rod 404 and the movable telescopic rod 410, the fixed card block 405 and the movable card block 411 can be moved to contact the contact block 403. The fixing block 405 and the moving block 411 are matched, so that the contact block 403 is connected by the fixing block 405 and the moving block 411, so that the base 402 is used to stably support and place the main body 1 of the digital-to-analog converter. If the main body 1 of the digital-to-analog converter needs to be disassembled, the adjusting screw 409 can be rotated, and the threaded connection between the adjusting screw 409 and the adjusting plate 408 can drive the adjusting plate 408, the moving telescopic rod 410 and the moving block 411 to move, so that the moving block 411 is separated from the contact block 403, so that the connecting seat 401 and the base 402 can be quickly disassembled and separated, which is convenient for the fast and stable installation of the digital-to-analog converter for optical fiber communication when in use, improves the installation stability of the digital-to-analog converter for optical fiber communication when in use, and also increases the convenience of disassembly and separation of the digital-to-analog converter for optical fiber communication when in use;

[0058] When the digital-to-analog converter for optical fiber communication is in use, the heat dissipation holes 2 can be used to dissipate heat inside the main body 1 of the digital-to-analog converter. While dissipating heat for the main body 1 of the digital-to-analog converter, the ultra-black coating 302 can be used to absorb light entering through the heat dissipation holes 2, thereby ensuring that the inside of the main body 1 of the digital-to-analog converter will not age due to the entry of external light. When heat dissipation protection is not required, the rotating head 306 can be rotated to drive the threaded rod 307 to rotate. In combination with the pulley 308 and the transmission belt 309 at one end of the threaded rod 307, the four threaded rods 307 can rotate at the same time, thereby connecting the threaded rod 307 with the movable plate 304 through the threaded connection , the movable plate 304 can be moved along the placement groove 303, driving the movable plate 304 to move until the contact pad 305 contacts the inner wall of the fixing frame 301, so that the movable plate 304 and the fixing frame 301 are used to separate the digital-to-analog converter body 1 from the outside world, so as to achieve the effect of isolating and protecting the digital-to-analog converter body 1, and then the stable operation of the digital-to-analog converter body 1 can be ensured in a cold and humid environment, and the internal corrosion and damage of the digital-to-analog converter body 1 will not occur due to the humidity of the air, thereby ensuring the isolation protection of the digital-to-analog converter for optical fiber communication when in use, and improving the protection performance of the digital-to-analog converter for optical fiber communication when in use;

[0059] When the optical fiber is connected to the digital-to-analog converter body 1, the optical fiber is first inserted into the interface at one end of the digital-to-analog converter body 1. The optical fiber connection port will contact the two protective covers 505 respectively, so that the protective cover 505 and the movable frame 503 move along the installation groove 501, driving the return spring 504 to contract. With the entry of the optical fiber connection port, combined with the rebound of the return spring 504, the movable frame 503 can be driven to move along the slide bar 502 in the installation groove 501, so that the protective cover 505 moves to the outside of the optical fiber interface, so that the protective cover 505 can be used to protect the outside of the optical fiber interface. Combined with the desiccant plate 505 on the inner wall of the protective cover 505, 06, the connection between the optical fiber interface and the interface of the digital-to-analog converter body 1 can be dried and protected, reducing the moisture between the optical fiber interface and the interface of the digital-to-analog converter body 1 caused by external water vapor. Combined with the installed contact cotton pad 507, the protective cover 505 can be buffered when in contact with the optical fiber interface, thereby ensuring the stability of the optical fiber interface and the interface of the digital-to-analog converter body 1 when connected, avoiding the loosening and separation between the optical fiber and the digital-to-analog converter body 1 caused by accidental contact from the outside, improving the stability of the connection between the light and the digital-to-analog converter body 1, and also increasing the interface protection performance of the digital-to-analog converter for optical fiber communication when in use.

[0060] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A digital-to-analog converter for optical fiber communication, comprising a digital-to-analog converter body (1), characterized in that: Heat dissipation holes (2) are evenly provided at both ends of the digital-to-analog converter body (1); heat dissipation and light blocking mechanisms (3) are fixedly installed at the positions of the heat dissipation holes (2) on the inner walls of both ends of the digital-to-analog converter body (1); the heat dissipation and light blocking mechanisms (3) comprise a fixing frame (301), an ultra-black coating (302), a placement slot (303) and a movable plate (304); A fixing frame (301) is fixedly installed at the positions of the heat dissipation holes (2) on the inner walls at both ends of the digital-to-analog converter body (1); the inner wall of one end of the fixing frame (301) is coated with an ultra-black coating (302); a placement groove (303) is symmetrically provided at one end of the fixing frame (301); a movable plate (304) is placed inside the placement groove (303); A convenient separation assembly mechanism (4) is installed at the bottom end of the digital-to-analog converter body (1), and the convenient separation assembly mechanism (4) comprises a connecting seat (401), a base (402) and a contact block (403); A connecting seat (401) is fixedly mounted at the bottom end of the digital-to-analog converter body (1), a base (402) is placed at the bottom end of the connecting seat (401), and contact blocks (403) are fixedly connected at both ends of the connecting seat (401); A wiring protection mechanism (5) is installed at one end of the digital-to-analog converter body (1), and the wiring protection mechanism (5) comprises a mounting groove (501), a sliding rod (502) and a movable frame (503); One end of the digital-to-analog converter body (1) is symmetrically provided with an installation groove (501), the inner wall of the installation groove (501) is fixedly connected with a slide bar (502), and the outer side of the slide bar (502) is slidably mounted with a moving frame (503).

2. A digital-to-analog converter for optical fiber communication according to claim 1, characterized in that: The heat dissipation and light blocking mechanism (3) further comprises a contact pad (305), a rotating head (306), a threaded rod (307), a pulley (308) and a transmission belt (309); A contact gasket (305) is fixedly connected to the outer side of the movable plate (304); a rotating head (306) is symmetrically embedded and rotatably installed at one end of the digital-to-analog converter body (1) at a position corresponding to the movable plate (304); a threaded rod (307) is fixedly connected to one end of the rotating head (306); a pulley (308) is fixedly connected to the other end of the threaded rod (307); and the outer side of the pulley (308) is connected to the inner side of a transmission belt (309).

3. A digital-to-analog converter for optical fiber communication according to claim 2, characterized in that: The thickness of the ultra-black coating (302) is 5 mm, and the length of the ultra-black coating (302) is smaller than the width of the fixing frame (301).

4. A digital-to-analog converter for optical fiber communication according to claim 2, characterized in that: The threaded rod (307) is connected to the movable plate (304) via threads, and the outer side of the contact gasket (305) is in contact with the inner wall of the fixing frame (301).

5. A digital-to-analog converter for optical fiber communication according to claim 1, characterized in that: The convenient separation assembly mechanism (4) further comprises a fixed telescopic rod (404), a fixed block (405), a fixed plate (406), a fixed rod (407), an adjustment plate (408), an adjustment screw (409), a movable telescopic rod (410), a movable block (411) and a mounting ear (412); A fixed telescopic rod (404) is evenly and symmetrically fixedly installed on the inner wall of one end of the base (402), one end of the fixed telescopic rod (404) is fixedly connected through one end of a fixed clamp (405), a fixed plate (406) is fixedly connected to the top of the base (402), one end of the fixed plate (406) is symmetrically fixedly connected to a fixed rod (407), an adjustment plate (408) is placed outside the fixed rod (407), one end of the adjustment plate (408) is embedded with an adjustment screw (409) for rotation, one end of the adjustment plate (408) is evenly and symmetrically fixedly installed with a movable telescopic rod (410), one end of the movable telescopic rod (410) is fixedly connected through one end of a movable clamp (411), and both ends of the base (402) are symmetrically fixedly connected with mounting ears (412).

6. A digital-to-analog converter for optical fiber communication according to claim 5, characterized in that: The bottom end of the connecting seat (401) contacts the inner wall of the bottom end of the base (402), and wear-resistant sheets are attached to the outer sides of the fixed block (405) and the movable block (411).

7. A digital-to-analog converter for optical fiber communication according to claim 5, characterized in that: The adjusting screw rod (409) is connected to the adjusting plate (408) via threads, and the fixed clamping block (405) and the movable clamping block (411) are respectively in contact with the contact block (403).

8. A digital-to-analog converter for optical fiber communication according to claim 1, characterized in that: The wiring protection mechanism (5) further comprises a reset spring (504), a protective cover (505), a desiccant plate (506) and a contact cotton pad (507); A return spring (504) is sleeved on the outer side of the sliding rod (502), a protective cover (505) is fixedly connected to one end of the movable frame (503), a desiccant plate (506) is connected to the inner wall of the protective cover (505), and a contact cotton pad (507) is connected to the inner wall of the desiccant plate (506).

9. A digital-to-analog converter for optical fiber communication according to claim 8, characterized in that: A contact cushion is installed at the connection between the two protective covers (505), and the other end of the return spring (504) is in contact with one end of the moving frame (503).

10. A digital-to-analog converter for optical fiber communication according to claim 8, characterized in that: Bolts are embedded and installed at the position of the outer side of the protective cover (505) corresponding to the desiccant plate (506), and the desiccant plate (506) and the protective cover (505) are installed by bolts.

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