Insertion sheet type optical splitter structure with adjustable closed latch and test method

Abstract

The invention discloses an insert-type optical divider structure with adjustable closing latches and a test method, and relates to the field of insert-type optical divider product drop test, the insert-type optical divider structure comprises an optical divider shell, the optical divider shell is provided with a plurality of tail handle clamping grooves, each tail handle clamping groove is correspondingly provided with a limiting latch, and the limiting latches are arranged in the tail handle clamping grooves. The limiting clamping teeth are inserted into the optical splitter shell in a sliding mode, limiting clamping grooves are formed in the ends, close to the tail handle clamping grooves, of the limiting clamping teeth, the limiting clamping grooves and the tail handle clamping grooves are stepped grooves, and the limiting clamping teeth move close to or away from the optical splitter shell. The limiting clamping groove and the tail handle clamping groove are combined to form an annular step structure matched with the ferrule tail handle, the ferrule tail handle can be comprehensively fixed, the ferrule tail handle can be well fixed to an optical splitter shell after being tested to be qualified, it is ensured that the drop test requirement can be met, and the product testing accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of drop tests for plug-in optical splitters, and specifically to a structure and testing method of a plug-in optical splitter with adjustable closing teeth. Background Art

[0002] With the rapid development of communication networks, plug-in optical splitters have the characteristics of compact structure, small size, wide operating wavelength range, high reliability, good splitting uniformity, etc., and are mainly applied to multiple fields such as fiber optic communication systems, fiber optic sensing systems, passive optical networks, and FTTx projects. In a data center, it is used to efficiently distribute and receive fiber optic signals to meet the large data transmission requirements within and between data centers. In a telecommunication network, it is used in various optical transmission systems, including metropolitan area networks, backbone networks, etc. In a local area network, it is used to connect various network devices to achieve the distribution and convergence of optical signals, improving the network coverage and transmission performance. In the sensor field, it can achieve distributed transmission of optical signals, improving the accuracy and sensitivity of sensors. In passive optical networks (such as EPON, GPON, etc.), it is used to connect the central office and terminal devices and achieve optical signal splitting. In FTTx (fiber to the home / building / roadside, etc.) projects, it can be installed in a wall-mounted FTTH optical cable distribution box to achieve the distribution and transmission of fiber optic signals. At the same time, the plug-in optical splitter also supports installation in various distribution cabinets or chassis, facilitating network deployment and maintenance. During the production process of the plug-in optical splitter, a drop test needs to be carried out. Currently, the structure of the plug-in optical splitter cannot fix the ferrule tail well, resulting in a certain looseness after the ferrule tail is installed during testing. During the testing process, the ferrule may be pushed out of the card slot, resulting in unqualified parameters. When the measured parameters do not meet the requirements, special tools are needed for repair. The operation process requires pulling forcefully, which may cause wear of the clips. When testing again, the ferrule is easily pushed out, resulting in unqualified parameters. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a structure and testing method of a plug-in optical splitter with adjustable closing teeth to solve the deficiencies of the prior art.

[0004] The purpose of the present invention is achieved through the following technical solutions: A structure of a plug-in optical splitter with adjustable closing teeth includes an optical splitter housing. A plurality of ferrule tail slots are opened on the optical splitter housing, and a limit tooth is correspondingly provided for each ferrule tail slot. The limit tooth is slidably inserted into the optical splitter housing. A limit slot is opened at one end of the limit tooth close to the ferrule tail slot. Both the limit slot and the ferrule tail slot are stepped slots. The limit tooth moves closer to or away from the optical splitter housing to make the limit slot and the ferrule tail slot merge to form an annular stepped structure that matches the ferrule tail.

[0005] Further, an installation cavity is provided below the tail handle slot of the optical splitter housing. Two L-shaped lock teeth are oppositely arranged in the installation cavity. The L-shaped lock teeth have the freedom to move in the horizontal direction. The optical splitter housing is provided with jacks on both sides of the tail handle slot. The jacks communicate with the installation cavity. An L-shaped lock tooth is slidably arranged in the jack. One end of the L-shaped lock tooth is fixedly connected to the limit engaging tooth. The L-shaped lock tooth is buckled by the L-shaped lock tooth to fix the limit engaging tooth on the optical splitter housing.

[0006] Further, an upper rack and a lower rack are arranged at intervals up and down in the installation cavity. The upper rack and the lower rack are respectively connected to the two L-shaped lock teeth. A gear is arranged between the upper rack and the lower rack. The gear is rotatably connected to the optical splitter housing. The upper rack and the lower rack are both engaged with the gear.

[0007] Further, the gear is slidably sleeved on a locking screw. Both ends of the gear contact the inner side wall of the installation cavity. One end of the locking screw is threadedly connected to the optical splitter housing, and the other end passes through the optical splitter housing and is connected with a knob.

[0008] Further, a plurality of sliding grooves are uniformly arranged along the circumferential direction of the inner wall of the gear. The sliding grooves penetrate along the axial direction of the gear. A sliding tooth is slidably fitted in the sliding groove. The sliding tooth is fixedly connected to the locking screw.

[0009] Further, two horizontal sliding grooves are provided on the installation cavity of the optical splitter housing. Slide bars are fixed on the side walls of the upper rack and the lower rack respectively. The two slide bars are respectively slidably fitted in the two horizontal sliding grooves.

[0010] Further, a lower pressing plate is fixed on the side of the L-shaped lock tooth away from the L-shaped lock tooth. The bottom of the lower pressing plate is connected with a telescopic rod. One end of the telescopic rod away from the lower pressing plate is connected with the inner bottom wall of the installation cavity. A spring is sleeved on the telescopic rod. When the L-shaped lock tooth buckles the L-shaped lock tooth, the spring is in a compressed state.

[0011] A testing method for a plug-in optical splitter with adjustable closing engaging teeth, using the above plug-in optical splitter structure, includes the following steps:

[0012] S1. Put the polished ferrule tail handle into the tail handle slot of the optical splitter housing, so that the stepped section of the ferrule tail handle is correspondingly matched in the stepped groove of the tail handle slot, and connect the ferrule tail handle with the front adapter in place;

[0013] S2. After passing the test, move the limit clamping teeth downward to form an annular stepped structure between the limit card slot and the tail handle card slot, and lock the limit clamping teeth;

[0014] S3. Ensure that the tail handle of the ferrule cannot be adjusted up and down, left and right, or front and back, and conduct a drop test. The height of the drop test is 1.8 meters, and it is dropped 10 times;

[0015] S4. If the product parameters are qualified, the test ends. When repair is required, move the limit clamping teeth upward, remove the tail handle of the ferrule, change the direction for repair and testing, and then repeat S2.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. It can comprehensively fix the tail handle of the ferrule, and can be well fixed on the optical splitter housing after passing the test, ensuring that it can meet the requirements of the drop test and improving the accuracy of product testing.

[0018] 2. There is no need to use special tools for repair operations, reducing the workload of personnel and greatly improving production efficiency.

[0019] 3. This structure is simple to operate, reduces waste, and improves the production yield.

[0020] 4. The limit clamping teeth are designed for individual fixation, and during the repair process, other qualified products will not be taken out due to the actions generated by adjustment, increasing the workload of reinspection. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a ferrule type optical splitter structure with adjustable closing clamping teeth according to the present invention;

[0022] Figure 2 It is an internal structural schematic diagram of a ferrule type optical splitter structure with adjustable closing clamping teeth according to the present invention;

[0023] Figure 3 It is Figure 2 The enlarged view at A in

[0024] In the figure, 1 - optical splitter housing, 2 - tail handle card slot, 3 - limit clamping teeth, 4 - limit card slot, 5 - installation cavity, 6 - 7-shaped locking teeth, 7 - jack, 8 - L-shaped locking teeth, 9 - upper rack, 10 - lower rack, 11 - gear, 12 - locking screw, 13 - nut, 14 - chute, 15 - sliding teeth, 16 - horizontal chute, 17 - lower pressing plate, 18 - telescopic rod, 19 - spring. Detailed Embodiment

[0025] The technical solution of the present invention will be further described in detail below in conjunction with the drawings, but the protection scope of the present invention is not limited to the following.

[0026] Example 1

[0027] As Figures 1 to 3 shown, an insertion - type optical splitter structure with adjustable closing teeth includes an optical splitter housing 1. A plurality of tail - handle slots 2 are provided on the optical splitter housing 1. Each tail - handle slot 2 is correspondingly provided with a limit tooth 3. The limit tooth 3 is slidably inserted on the optical splitter housing 1. A limit slot 4 is provided at one end of the limit tooth 3 close to the tail - handle slot 2. Both the limit slot 4 and the tail - handle slot 2 are stepped slots. The limit tooth 3 moves closer to or away from the optical splitter housing 1 to make the limit slot 4 and the tail - handle slot 2 merge to form an annular stepped structure matching the core tail - handle. The core tail - handle is in a stepped shape. To prevent the core tail - handle from loosening on the optical splitter housing 1 during the drop test, the tail - handle slot 2 is opened in a shape matching the core tail - handle. For the convenience of installing the core tail - handle, both the tail - handle slot 2 and the limit slot 4 are set as semi - type structures. By setting the slidable limit tooth 3 and changing the distance between the tail - handle slot 2 and the limit slot 4 by moving the limit tooth 3, it is convenient to install and disassemble the core tail - handle. During installation, move the limit tooth 3 upward to separate the limit slot 4 from the tail - handle slot 2, then install the core tail - handle in the tail - handle slot 2, and move the limit tooth 3 downward so that the bottom surface of the limit tooth 3 contacts the top surface of the optical splitter housing 1, making the limit slot 4 and the tail - handle slot 2 merge to form an annular stepped structure, so that the stepped part of the core tail - handle fits into the annular stepped structure, realizing the full - range fixation of the core tail - handle, meeting the requirements of the drop test, ensuring that there is no loosening during the test, and improving the accuracy of product testing.

[0028] Example 2

[0029] On the basis of Example 1, as Figure 2 and Figure 3As shown in the figure, an installation cavity 5 is provided below the tail handle slot 2 of the optical splitter housing 1. Two L-shaped locking teeth 6 are oppositely arranged in the installation cavity 5. The L-shaped locking teeth 6 have the freedom to move horizontally. The optical splitter housing 1 is provided with insertion holes 7 on both sides of the tail handle slot 2. The insertion holes 7 communicate with the installation cavity 5. An L-shaped locking tooth 8 is slidably arranged in the insertion hole 7. One end of the L-shaped locking tooth 8 is fixedly connected to the limit clamping tooth 3. The L-shaped locking tooth 8 is buckled by the L-shaped locking tooth 6 to fix the limit clamping tooth 3 on the optical splitter housing 1. A lower pressing plate 17 is fixed on the side of the L-shaped locking tooth 8 away from the L-shaped locking tooth 6. The bottom of the lower pressing plate 17 is connected to a telescopic rod 18. One end of the telescopic rod 18 away from the lower pressing plate 17 is connected to the inner bottom wall of the installation cavity 5. A spring 19 is sleeved on the telescopic rod 18. When the L-shaped locking tooth 6 buckles the L-shaped locking tooth 8, the spring 19 is in a compressed state. When locking the limit clamping tooth 3, first move the L-shaped locking tooth 6 in the direction away from the L-shaped locking tooth 8 so that the L-shaped locking tooth 6 is located on one side of the L-shaped locking tooth 8, and then move the limit clamping tooth 3 downward so that the horizontal section of the L-shaped locking tooth 8 is located below the horizontal section of the L-shaped locking tooth 6. At this time, the L-shaped locking tooth 8 compresses the spring 19 through the lower pressing plate 17 to make it in a compressed state. Finally, move the L-shaped locking tooth 6 close to the L-shaped locking tooth 8. After the L-shaped locking tooth 6 moves in place, under the reaction force of the compressed spring 19, the top surface of the horizontal section of the L-shaped locking tooth 8 abuts against the bottom surface of the horizontal section of the L-shaped locking tooth 6, so that the L-shaped locking tooth 8 buckles the L-shaped locking tooth 6. The movement freedom of the L-shaped locking tooth 8 is restricted by the L-shaped locking tooth 6, and then the movement freedom of the limit clamping tooth 3 is restricted, realizing good fixation of the ferrule tail handle and ensuring that there will be no loosening during testing to affect the test results.

[0030] Embodiment Three

[0031] On the basis of Embodiment Two, an upper rack 9 and a lower rack 10 are arranged at intervals up and down in the installation cavity 5. The upper rack 9 and the lower rack 10 are respectively connected to the two L-shaped locking teeth 6. A gear 11 is arranged between the upper rack 9 and the lower rack 10. The gear 11 is rotatably connected to the optical splitter housing 1. Both the upper rack 9 and the lower rack 10 are meshed with the gear 11. By rotating the gear 11, the upper rack 9 and the lower rack 10 are driven to move simultaneously. Since the upper rack 9 and the lower rack 10 are arranged oppositely, the moving directions of the upper rack 9 and the lower rack 10 are opposite, and the fixation and opening of the two L-shaped locking teeth 8 on one limit clamping tooth 3 can be completed simultaneously. The structure is simple and the layout space is small, and the fixation and loosening of the ferrule tail handle can be completed in a narrow space.

[0032] Embodiment Four

[0033] Since a drop test is to be carried out, when the optical splitter housing 1 drops, it will generate a large vibration, which is likely to cause the gear 11 to rotate self, affecting the fixation effect of the ferrule tail handle. For this reason, on the basis of Embodiment Three, as Figure 2 and Figure 3As shown in the figure, the gear 11 is slidably sleeved on the locking screw 12. Both ends of the gear 11 are in contact with the inner side wall of the installation cavity 5. One end of the locking screw 12 is threadedly connected to the optical splitter housing 1, and the other end passes through the optical splitter housing 1 and is connected with a knob 13. A plurality of sliding grooves 14 are evenly distributed along the circumferential direction of the inner wall of the gear 11. The sliding grooves 14 penetrate along the axial direction of the gear 11. A sliding tooth 15 is slidably fitted in the sliding groove 14. The sliding tooth 15 is fixedly connected to the locking screw 12. Rotate the knob 13 to tighten the locking screw 12. Since the locking screw 12 is in a screwing-in motion, through the sliding fit between the sliding groove 14 and the sliding tooth 15, there is a relative linear freedom between the locking screw 12 and the gear 11. During the screwing-in process of the locking screw 12, the gear 11 will be driven to rotate. Since both ends of the gear 11 are in contact with the inner side wall of the installation cavity 5, the linear movement freedom of the gear 11 is restricted, ensuring that the gear 11 stably meshes with the upper rack 9 and the lower rack 10. Since the locking screw 12 can move within the gear 11, the locking screw 12 will not interfere with the gear 11. By the threaded connection between the locking screw 12 and the optical splitter housing 1, the rotational freedom of the gear 11 is restricted, so that the gear 11 has strong shock resistance, ensuring that the gear 11 will not rotate during the drop test, thereby improving the installation strength of the limit locking teeth 3 and ensuring that the ferrule shank will not loosen during the test. When it is necessary to disassemble the ferrule shank after the test is completed, rotate the knob 13 in the reverse direction to drive the gear 11 to rotate in the reverse direction, so that the 7-shaped locking tooth 6 moves horizontally and separates from the L-shaped locking tooth 8. At this time, the L-shaped locking tooth 8 pops up upward under the reaction force of the spring 19, separating the limit locking teeth 3 from the optical splitter housing 1, and the ferrule shank can be removed. The operation is simple and fast.

[0034] Furthermore, the optical splitter housing 1 is provided with two horizontal sliding grooves 16 on the installation cavity 5. Slide bars are fixed on the side walls of both the upper rack 9 and the lower rack 10. The two slide bars are respectively slidably fitted in the two horizontal sliding grooves 16. The movement directions of the upper rack 9 and the lower rack 10 are guided through the cooperation between the slide bars and the horizontal sliding grooves 16, so that the 7-shaped locking tooth 6 can accurately engage with the L-shaped locking tooth 8, realizing the stable connection of the limit locking teeth 3.

[0035] A method for testing an in-line optical splitter with adjustable closing locking teeth, using the above in-line optical splitter structure, includes the following steps:

[0036] S1. Place the ferrule shank with qualified grinding into the ferrule shank slot 2 of the optical splitter housing 1, so that the stepped section of the ferrule shank corresponds to and matches in the stepped groove of the ferrule shank slot 2, and connect the ferrule shank and the front adapter in place;

[0037] S2. Energize the front adapter to make it conductive, determine whether the product is qualified. After passing the test, conduct a drop test. Move the limit locking teeth 3 downward to form an annular stepped structure between the limit slot 4 and the tail handle slot 2, and lock the limit locking teeth 3.

[0038] S3. Ensure that the tail handle of the ferrule cannot be adjusted vertically, horizontally, or longitudinally, and conduct a drop test with a height of 1.8 meters and 10 drops.

[0039] S4. After the drop test is completed, energize the front adapter again to observe the product parameters. If the product parameters are qualified, the test ends; if the product parameters are unqualified, disassemble it for repair. During repair, move the limit locking teeth 3 upward, remove the tail handle of the ferrule, change the direction for repair testing, and then repeat S2.

Claims

1. An insertion - type optical splitter structure with adjustable closing teeth, including an optical splitter housing (1), characterized in that, A plurality of tail handle slots (2) are provided on the optical splitter housing (1). Each of the tail handle slots (2) is correspondingly provided with a limit tooth (3). The limit tooth (3) is slidably inserted into the optical splitter housing (1). A limit slot (4) is provided at one end of the limit tooth (3) close to the tail handle slot (2). Both the limit slot (4) and the tail handle slot (2) are stepped slots. The limit tooth (3) moves closer to or away from the optical splitter housing (1) to make the limit slot (4) and the tail handle slot (2) combine to form an annular stepped structure for matching the ferrule tail handle.

2. The structure of an in-line optical splitter with adjustable closing teeth according to claim 1, characterized in that, An installation cavity (5) is provided below the tail handle slot (2) on the optical splitter housing (1). Two 7-shaped locking teeth (6) are oppositely arranged in the installation cavity (5). The 7-shaped locking teeth (6) have the freedom to move in the horizontal direction. Jack holes (7) are provided on both sides of the tail handle slot (2) on the optical splitter housing (1). The jack holes (7) communicate with the installation cavity (5). An L-shaped locking tooth (8) is slidably arranged in the jack hole (7). One end of the L-shaped locking tooth (8) is fixedly connected to the limit tooth (3). The 7-shaped locking tooth (6) latches the L-shaped locking tooth (8) to fix the limit tooth (3) on the optical splitter housing (1).

3. The structure of an in-line optical splitter with adjustable closing teeth according to claim 2, characterized in that, An upper rack (9) and a lower rack (10) are arranged at intervals up and down in the installation cavity (5). The upper rack (9) and the lower rack (10) are respectively connected to the two 7-shaped locking teeth (6). A gear (11) is arranged between the upper rack (9) and the lower rack (10). The gear (11) is rotatably connected to the optical splitter housing (1). Both the upper rack (9) and the lower rack (10) are meshed with the gear (11).

4. A plug-in optical splitter structure with adjustable closing teeth according to claim 3, characterized in that, The gear (11) is slidably sleeved on a locking screw (12). Both ends of the gear (11) contact the inner side wall of the installation cavity (5). One end of the locking screw (12) is threadedly connected to the optical splitter housing (1), and the other end passes through the optical splitter housing (1) and is connected with a knob (13).

5. The structure of a plug-in optical splitter with adjustable closing teeth according to claim 4, characterized in that, A plurality of sliding slots (14) are evenly distributed along the circumferential direction of the inner wall of the gear (11). The sliding slots (14) penetrate along the axial direction of the gear (11). A sliding tooth (15) is slidably fitted in the sliding slot (14). The sliding tooth (15) is fixedly connected to the locking screw (12).

6. The structure of an in-line optical splitter with adjustable closing teeth according to claim 2, characterized in that, Two horizontal sliding slots (16) are provided on the optical splitter housing (1) at the installation cavity (5). A sliding bar is fixed to the side wall of the upper rack (9) and the side wall of the lower rack (10). The two sliding bars are respectively slidably fitted in the two horizontal sliding slots (16).

7. The structure of a plug-in optical splitter with adjustable closing teeth according to claim 2, wherein, On one side of the L-shaped locking tooth (8) away from the 7-shaped locking tooth (6), a lower pressing plate (17) is fixed. The bottom of the lower pressing plate (17) is connected to a telescopic rod (18). One end of the telescopic rod (18) away from the lower pressing plate (17) is connected to the inner bottom wall of the installation cavity (5). A spring (19) is sleeved on the telescopic rod (18). When the 7-shaped locking tooth (6) latches the L-shaped locking tooth (8), the spring (19) is in a compressed state.

8. A method for testing an insert-type optical splitter with adjustable closing teeth, which uses the insert-type optical splitter structure as described in claim 1, characterized in that, It includes the following steps: S1. Put the polished ferrule shank into the shank slot (2) of the optical splitter housing (1), make the stepped section of the ferrule shank correspond to and fit in the stepped slot of the shank slot (2), and connect the ferrule shank and the front adapter in place; S2. After passing the test, move the limit locking tooth (3) downward to form an annular stepped structure between the limit slot (4) and the shank slot (2), and lock the limit locking tooth (3); S3. Ensure that the ferrule shank cannot be adjusted up and down, left and right, or front and back, and conduct a drop test with a drop height of 1.8 meters and 10 drops; S4. If the product parameters are qualified, the test ends. When repair is needed, move the limit locking tooth (3) upward, take out the ferrule shank, change the direction for repair and testing, and then repeat S2.

Images