Optical cable joint protection box

Abstract

The utility model relates to the technical field of optical cable communication equipment, in particular to an optical cable joint protection box, which is characterized in that crimping parts symmetrically extend from the side edges of a top cover and a bottom cover, and a plurality of convex crimping inclined planes are uniformly distributed on the crimping parts; the device further comprises an extrusion piece movably arranged on the outer side of the crimping part, the extrusion piece is provided with an insertion opening groove used for being inserted into the crimping part, extrusion blocks corresponding to the crimping inclined faces one to one are fixed to the inner walls of the upper side and the lower side of the insertion opening groove, and the extrusion piece is transversely moved in the distribution direction of the crimping inclined faces. The extrusion block gradually presses down the crimping inclined surface to tightly press and fit the top cover and the bottom cover together; the locking piece and the shell are arranged in a sliding mode, and the locking piece is matched with tightness adjustment of the screw rod to achieve translation and locking of the extrusion piece; the utility model can effectively solve the problems that the conventional connector box is tedious to mount and dismount and is not beneficial to rapid maintenance and response.

Description

Technical Field

[0001] This utility model relates to the field of optical cable communication equipment technology, and specifically to an optical cable connector protection box. Background Technology

[0002] Fiber optic splice boxes are widely used in fiber optic communication networks to protect fiber optic splice points from external environmental influences and ensure stable transmission of communication signals. Depending on the installation method, fiber optic splice boxes can be divided into vertical and horizontal structures. Horizontal fiber optic splice boxes, due to their compact structure, large capacity, and suitability for overhead or wall-mounted installations, are widely used in communication base stations, building cabling, and outdoor splicing scenarios.

[0003] In existing technologies, horizontal optical cable junction boxes typically employ a bolt-locking structure to achieve enclosure and sealing. A typical structure includes a cover and bottom connected by multiple circumferentially distributed bolts, with tightening the bolts achieving both waterproof sealing and mechanical fixation. While this method performs well in terms of sealing performance, it still has the following shortcomings in practical applications:

[0004] 1. Cumbersome installation and disassembly: Each time installation or maintenance is carried out, multiple bolts need to be loosened or tightened in sequence, which is time-consuming and laborious, especially in high-altitude, narrow or inconvenient places (such as overhead lines or wall-mounted environments).

[0005] 2. It is not conducive to rapid maintenance response: In scenarios such as emergency communication repair, the existing structure cannot be opened or closed quickly, which delays the maintenance time.

[0006] Therefore, there is an urgent need for a fiber optic cable connector protection box with a simpler structure, quicker assembly and disassembly, and easier and more efficient maintenance, in order to improve construction efficiency and ease of operation and maintenance. Utility Model Content

[0007] Technical problems to be solved

[0008] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an optical cable connector protection box, which can effectively solve the problems of cumbersome installation and disassembly of existing connector boxes and the inability to quickly maintain and respond to maintenance.

[0009] Technical solution

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] This utility model provides a protective box for optical cable connectors, including a housing and a splicing tray placed inside the housing. The housing has channels communicating with the interior at both ends. The housing is mainly composed of a top cover and a bottom cover that interlock. Crimping portions extend symmetrically from the sides of the top and bottom covers, and each crimping portion has multiple protruding crimping bevels evenly distributed. The box also includes:

[0012] An extrusion member is located on the outside of the crimping part. The extrusion member has a slot for inserting into the crimping part. Extrusion blocks corresponding to the crimping inclined surfaces are fixed on the upper and lower inner walls of the slot. The extrusion member is moved laterally along the distribution direction of the crimping inclined surfaces. The extrusion blocks gradually press down on the crimping inclined surfaces to press the top cover and bottom cover tightly together.

[0013] A locking member is slidably disposed with the housing, and the locking member, in conjunction with the tension adjustment of the screw, enables the extrusion member to be translated and locked.

[0014] Furthermore, the pressing part is symmetrically distributed on one side of the top cover or bottom cover, the extrusion member is symmetrically arranged in line with the pressing part, and the locking member is placed between the symmetrically distributed extrusion members. The two spaced extrusion members can be pulled to move laterally towards each other, and the pressing block is used to gradually press down the pressing slope to press the top cover and bottom cover tightly together.

[0015] Furthermore, the inner ends of the extrusion members are provided with adjustment holes that are perpendicular to the insertion slots. The adjustment holes are vertically penetrating holes. The locking members are symmetrically provided with wedge-shaped heads on both sides. The wedge-shaped heads are inserted into the adjustment holes, and the two spaced extrusion members are pulled laterally towards each other by the lateral extrusion of the wedge-shaped surfaces.

[0016] Furthermore, between the symmetrically distributed pressing parts, a guide seat is fixed in the middle of the side of the top or bottom cover. The guide seat has a vertically penetrating guide hole. The middle of the locking member has a guide post. The locking member is slidably disposed in the guide hole through the guide post. The locking members are symmetrically spaced at the guide seats of the top and bottom covers. When the spacing between the locking members decreases towards each other, the wedge-shaped surface laterally squeezes and pulls the two spaced pressing members to move laterally towards each other.

[0017] Furthermore, the guide post has a vertically arranged threaded through hole for the screw to pass through, and a hexagonal groove is coaxially formed at the outer end of the threaded through hole. The hexagonal groove is used to embed a nut that is threadedly connected to the screw.

[0018] Furthermore, the locking component is integrally cast from zinc alloy.

[0019] Furthermore, the pressing part includes a support plate extending from the side of the top cover or bottom cover, and the support plate has a plurality of protrusions evenly distributed at intervals, one side of the protrusions being the pressing slope.

[0020] Furthermore, a protruding limiting rib is formed in the middle of the pressing slope, and the contact surface between the extrusion block and the pressing slope is an arc surface. An engagement groove that cooperates with the limiting rib is opened on the arc surface. When the extrusion block is pressed tightly against the pressing slope, the engagement groove and the limiting rib together restrict the extrusion part from moving to the outside of the side of the top cover and bottom cover.

[0021] Furthermore, a forming groove is formed on the outer surface of the extrusion piece corresponding to the extrusion block, and a reinforcing rib is fixed inside the forming groove.

[0022] Furthermore, positioning pins and positioning holes for positioning are fixed at opposite corners of the mating surfaces of the top cover and the bottom cover, and a threaded connection hole is provided in the middle of the channel.

[0023] Beneficial effects

[0024] The technical solution provided by this utility model has the following advantages compared with the known public technology:

[0025] This utility model improves the design of the sealing and fixing joint on the side of the protective box shell. It uses an extrusion component to combine the extended pressing part, and a locking component to adjust and lock the lateral movement of the extrusion component. When the extrusion component moves laterally, the extrusion block presses down on the evenly distributed pressing slope to press the entire side of the top cover and bottom cover together. The multi-point balanced force achieves reliable sealing and fixing at the side. When the protective box is disassembled and assembled, only the screws used to connect the locking component need to be tightened or loosened to complete the quick disassembly and assembly of the side of the shell. The operation is convenient and quick, especially in the use of overhead and wall-mounted applications, which greatly improves construction efficiency and maintenance convenience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view showing the housing side sealed by an extrusion member in this embodiment;

[0028] Figure 2 This is a schematic diagram showing the separation of the extrusion member and the locking member at the crimping part in this embodiment;

[0029] Figure 3 This is a cross-sectional view of the sealing connection between the extrusion member and the locking member at the crimping part in this embodiment;

[0030] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0031] Figure 5 This is a schematic diagram showing the preparation of the fastening between the top cover and the bottom cover in this embodiment;

[0032] Figure 6 This is a diagram showing the distribution of the crimping parts on the top cover in this embodiment;

[0033] Figure 7 This is a perspective view of the extruded component on one side of the slot in this embodiment;

[0034] Figure 8 This is a perspective view of the locking component in this embodiment;

[0035] The labels in the diagram represent: 10, shell; 11, top cover; 12, bottom cover; 13, channel; 14, crimping part; 141, support plate; 142, protrusion; 143, crimping bevel; 144, limiting rib; 15, guide seat; 16, guide hole; 17, positioning pin; 18, positioning hole; 19, threaded connection hole; 20, extruded part; 21, insertion slot; 22, extrusion block; 221, arc surface; 222, engagement groove; 23, adjusting hole; 24, forming groove; 30, locking part; 31, guide post; 32, wedge head; 33, wedge surface; 34, threaded through hole; 35, hexagonal groove; 40, screw; 50, nut. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0037] The present invention will be further described below with reference to the embodiments.

[0038] Example:

[0039] This utility model provides a protective box for optical cable splices, an improved version of a horizontal optical cable splice box. It mainly includes a housing 10 and a splicing tray placed inside the housing 10. The housing 10 has channels 13 at both ends communicating with the interior. The housing 10 is mainly composed of a top cover 11 and a bottom cover 12 that interlock. This solution aims to improve the ease of assembly and disassembly of the protective box by modifying the sealing connection structure on the long side of the housing 10, changing the existing method of fixing with multiple bolts, thereby improving construction efficiency and maintenance convenience in practical application scenarios (aerial and wall-mounted). The core design of this solution is to add a quick-connect component to replace multiple bolts, based on minimal adjustments to the existing housing 10 mold. Figure 1-8 The specific design scheme is as follows:

[0040] A pressing portion 14 is symmetrically extended from the sides of the top cover 11 and the bottom cover 12. The pressing portion 14 has a plurality of protruding pressing slopes 143 evenly distributed. Specifically, the pressing portion 14 includes a support plate 141 extending from the side of the top cover 11 or the bottom cover 12. The support plate 141 is a flat plate extending outward along the interface of the top cover 11 or the bottom cover 12. A plurality of protrusions 142 are evenly distributed at intervals on the opposite outer side of the support plate 141. One side of the protrusion 142 is a pressing slope 143. In this embodiment, the angle between the pressing slope 143 and the support plate 141 is 15°.

[0041] It also includes an extrusion member 20 that is movable outside the crimping part 14. The extrusion member 20 is an independent accessory that can be freely disassembled and assembled at the crimping part 14. The extrusion member 20 is provided with a socket groove 21 for insertion into the crimping part 14. The upper and lower inner walls of the socket groove 21 are fixed with extrusion blocks 22 that correspond one-to-one with the crimping slope 143. The extrusion member 20 is moved laterally along the distribution direction of the crimping slope 143. The extrusion block 22 contacts the gradually rising crimping slope 143. The extrusion block 22 gradually presses down on the crimping slope 143 to press the top cover 11 and the bottom cover 12 tightly together, thereby achieving a good seal.

[0042] To quickly and easily achieve translational adjustment and locking of the pressing part 20 and the outer side of the pressing part 14, this design includes a locking member 30 that slides with the housing 10. The locking member 30, in conjunction with the screw 40, adjusts the tightness to achieve translational adjustment of the pressing part 20 and locks it using the self-locking property of the screw 40's thread. By using the pressing part 20 to assemble with the extended pressing part 14, and utilizing the locking member 30 to adjust and lock the lateral movement of the pressing part 20, during the lateral movement of the pressing part 20, the pressing block 22 presses down on the evenly distributed pressing slope 143, pressing the entire side of the top cover 11 and the bottom cover 12 together. This multi-point balanced force ensures reliable sealing and fixation at the side. When disassembling and assembling the protective box, only the screw 40 used to connect the locking member 30 needs to be tightened or loosened to quickly disassemble and assemble the side of the housing 10, making the operation convenient and quick.

[0043] The following is a detailed description of the preferred implementation method of this solution:

[0044] Firstly, in order to improve the balance of force applied to the multi-point pressing slope 143 by the extruder 20 on the long side and to simplify the production process, it is preferable to design the pressing part 14 to be symmetrically distributed on one side of the top cover 11 or the bottom cover 12. The extruder 20 is symmetrically arranged in line with the pressing part 14. The locking part 30 is placed between the symmetrically distributed extruder 20 and is located in the middle of the side of the housing 10. It can pull the two spaced extruder 20 to move laterally towards the middle of the side, so as to use the extrusion block 22 to gradually press down the pressing slope 143 to press the top cover 11 and the bottom cover 12 together.

[0045] Specifically, when adjusting the locking member 30 to move laterally towards the pressing members 20 on both sides, the inner ends of the pressing members 20 are provided with adjustment holes 23 that are perpendicular to the insertion slots 21. The adjustment holes 23 are vertically penetrating holes. The locking member 30 is symmetrically provided with wedge heads 32 on both sides. The ends of the wedge heads 32 can be inserted into the adjustment holes 23. When the wedge heads 32 are pressed down further, the lateral pressing of the wedge surfaces 33 is used to pull the two spaced pressing members 20 to move laterally towards each other. This achieves the pressing and sealing fixation of the pressing part 14.

[0046] In the design of the locking member 30 to achieve vertical displacement in conjunction with the screw 40, a guide seat 15 is fixed in the middle of the side of the top or bottom cover 12 between the symmetrically distributed pressing parts 14. The guide seat 15 is provided with a vertically penetrating guide hole 16. The middle of the locking member 30 is provided with a guide post 31. The locking member 30 is slidably disposed in the guide hole 16 through the guide post 31. The locking members 30 are symmetrically spaced at the guide seats 15 of the top cover 11 and the bottom cover 12 respectively. When the spacing of the locking members 30 decreases towards each other, the wedge surface 33 laterally squeezes and pulls the two spaced pressing members 20 to move laterally towards each other.

[0047] Meanwhile, a threaded through hole 34 for the screw 40 to pass through is vertically provided inside the guide post 31. A hexagonal groove 35 is coaxially provided at the outer end of the threaded through hole 34. The hexagonal groove 35 is used to embed the nut 50 that is threadedly connected to the screw 40. In use, the screw 40 in this embodiment is an internal hexagonal cup head screw 40 that passes through two symmetrically arranged locking members 30 one after the other. Then, with the nut 50 placed in the hexagonal groove 35 at the other end, the locking members 30 are slidably connected. By tightening the screw 40, the distance between the locking members 30 can be reduced. The wedge-shaped heads 32 on both sides of the locking member 30 pull the two side extrusion members 20 to move laterally and lock in real time. When the screw 40 is tightened to the expected torque value, the sealing connection and fixation of the side of the housing 10 is completed.

[0048] In this solution, the locking component 30 is integrally cast from zinc alloy. The wedge-shaped heads 32 on both sides and the guide post 31 in the middle make its main body M-shaped. The material characteristics of zinc alloy have good mechanical strength, which meets the needs of the application scenario. The hexagonal groove 35 satisfies the insertion limit of the nut 50 without affecting the rotation of the cup head screw 40. The locking component 30 with the upper and lower parts aligned also effectively saves production costs.

[0049] To improve the stability of the connection between the extrusion block 20 and the pressing part 14, an anti-detachment design is incorporated in the direction extending along the support plate 141. Specifically, when the extrusion block 22 presses against the pressing inclined surface 143, the extrusion block 22 is also limited in the direction extending along the support plate 141, preventing it from detaching from the pressing part 14 under external force. Specifically, a raised limiting rib 144 is formed in the middle of the pressing inclined surface 143. The contact surface between the extrusion block 22 and the pressing inclined surface 143 is an arc surface 221, which provides more stable contact and smoother downward movement. An engagement groove 222 is provided on the arc surface 221 to mate with the limiting rib 144. When the extrusion block 22 presses against the pressing inclined surface 143, the engagement groove 222 and the limiting rib 144 together restrict the extrusion block 20 from moving outwards towards the sides of the top cover 11 and the bottom cover 12.

[0050] To simplify the injection molding of the extrusion block 22 within the slot 21, a molding groove 24 is formed on the outer surface of the extrusion part 20 corresponding to the extrusion block 22, and reinforcing ribs are fixed inside the molding groove 24. In the mold design, the extrusion block 22 can be formed by a side-pull slider inserted into the molding groove 24 in conjunction with the fixed mold, simplifying the mold design and improving demolding efficiency.

[0051] When using the connector protection box of this product, the specific operation is as follows: After arranging and fixing the spliced ​​optical cable at the splice tray and the inlet / outlet channel 13, fasten the top cover 11 and the bottom cover 12 together. The positioning pins 17 and positioning holes 18 for positioning are fixed at the diagonal of the mating surfaces of the top cover 11 and the bottom cover 12 respectively, so as to achieve precise and quick fastening. Then, use bolts to pre-fix the two ends of the connector protection box using the threaded connection hole 19 set in the middle of the channel 13. Then, remove four extrusion parts 20 and four locking parts 30. First, insert the extrusion parts 20 into the corresponding pressing parts 14 through the insertion slots 21. Then, use the guide post 31 in the middle of the locking part 30 to insert along the guide seat 15. The wedge heads 32 on both sides are inserted into the adjustment holes 23 of the extrusion parts 20 on both sides respectively. Then, connect and tighten the upper and lower locking parts 30 through the screw 40 and nut 50. When the screw 40 reaches the expected torque value, it indicates that the extrusion parts 20, which are pulled in opposite directions, are pressing and sealing the sides of the top cover 11 and the bottom cover 12 in place. During disassembly, only the two screws 40 connecting the locking parts 30 and the two bolts at the end of the housing 10 need to be loosened to separate the top cover 11 and the bottom cover 12. The operation is convenient, quick, and saves time and effort.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective box for an optical cable connector, comprising a housing and a splicing tray disposed inside the housing, wherein the housing has channels communicating with the interior at both ends, and the housing is mainly composed of a top cover and a bottom cover that interlock, characterized in that, The top and bottom covers have symmetrically extending crimping portions on their sides, each crimping portion having a plurality of protruding crimping bevels evenly distributed thereon; it also includes: An extrusion member is located on the outside of the crimping part. The extrusion member has a slot for inserting into the crimping part. Extrusion blocks corresponding to the crimping inclined surfaces are fixed on the upper and lower inner walls of the slot. The extrusion member is moved laterally along the distribution direction of the crimping inclined surfaces. The extrusion blocks gradually press down on the crimping inclined surfaces to press the top cover and bottom cover tightly together. A locking member is slidably disposed with the housing, and the locking member, in conjunction with the tension adjustment of the screw, enables the extrusion member to be translated and locked.

2. The optical cable connector protection box according to claim 1, characterized in that, The pressing parts are symmetrically distributed on one side of the top cover or bottom cover. The extrusion parts are symmetrically arranged in line with the pressing parts. The locking parts are placed between the symmetrically distributed extrusion parts. The two spaced extrusion parts can be pulled to move laterally towards each other. The extrusion blocks are used to gradually press down the pressing slope to press the top cover and bottom cover tightly together.

3. The optical cable connector protection box according to claim 2, characterized in that, The inner ends of the extrusion members are provided with adjustment holes that are perpendicular to the insertion slots. The adjustment holes are vertically through holes. The locking members are symmetrically provided with wedge heads on both sides. The wedge heads are inserted into the adjustment holes, and the two spaced extrusion members are pulled to move laterally towards each other by the lateral extrusion of the wedge surfaces.

4. The optical cable connector protection box according to claim 3, characterized in that, Located between the symmetrically distributed pressing parts, a guide seat is fixed in the middle of the side of the top or bottom cover. The guide seat has a vertically penetrating guide hole. The locking member has a guide post in the middle. The locking member is slidably disposed in the guide hole through the guide post. The locking members are symmetrically spaced at the guide seats of the top and bottom covers. When the spacing between the locking members decreases towards each other, the wedge-shaped surface laterally squeezes and pulls the two spaced pressing members to move laterally towards each other.

5. A protective box for an optical cable connector according to claim 4, characterized in that, The guide post has a vertically provided threaded through hole for the screw to pass through, and a hexagonal groove is coaxially provided at the outer end of the threaded through hole. The hexagonal groove is used to embed a nut that is threadedly connected to the screw.

6. The optical cable connector protection box according to claim 1, characterized in that, The locking component is made of zinc alloy through integral casting.

7. A protective box for an optical cable connector according to claim 3, characterized in that, The pressing part includes a support plate extending from the side of the top cover or bottom cover, and a plurality of protrusions are evenly distributed on the support plate, one side of each protrusion being the pressing slope.

8. A protective box for an optical cable connector according to claim 7, characterized in that, A raised limiting rib is formed in the middle of the pressing slope. The contact surface between the extrusion block and the pressing slope is an arc surface. An engagement groove that cooperates with the limiting rib is opened on the arc surface. When the extrusion block is pressed tightly against the pressing slope, the engagement groove and the limiting rib together restrict the extrusion part from moving to the outside of the side of the top cover and bottom cover.

9. A protective box for an optical cable connector according to claim 8, characterized in that, A forming groove is formed on the outer surface of the extrusion piece corresponding to the extrusion block, and a reinforcing rib is fixed inside the forming groove.

10. A protective box for an optical cable connector according to claim 1, characterized in that, The top cover and bottom cover are fixed with positioning pins and positioning holes at opposite corners of their mating surfaces, and a threaded connection hole is provided in the middle of the channel.

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