An expandable optical cable junction box

Abstract

The present invention relates to the technical field of joint boxes, and in particular to an expandable optical cable joint box, comprising: a box body, with mounting grooves at both ends; a sealing plug, arranged in the mounting groove; a winding assembly, comprising: a basic disk, with two basic winding areas and a plurality of basic card slots; a first fixture, arranged between the two basic winding areas, with a plurality of first card slots; an expansion disk, with two expansion winding areas and a plurality of expansion card slots; a second fixture, arranged between the two expansion winding areas, with a plurality of second card slots; a cover plate, rotatably mounted on the basic disk; an optical fiber connection point is placed in the first card slot and the second card slot; the optical fiber is wound into a ring shape along the outer circumference of the two basic winding areas on the basic disk; and the optical fiber is wound into an "8" shape along the circumference of the two expansion winding areas on the expansion disk. The present invention can effectively solve the problem that the old optical fiber and the new optical fiber in the traditional joint box will cross and entangle together.

Description

Technical Field

[0001] The invention relates to the technical field of joint boxes, and in particular to an expandable optical cable joint box. Background Art

[0002] The optical cable splice box is a device used to protect the optical fiber splice point. In the optical fiber communication system, the optical fiber cable needs to be spliced ​​during the installation, repair and maintenance process, and the splice box is a key device used to ensure the safety and stability of the splice point. With the continuous increase in the demand for optical fiber communication, there will be new optical fibers that need to be connected, so the splice box needs to have a certain expansion capacity.

[0003] In the existing related technologies, the fiber splicing point usually requires a certain length of fiber to be reserved on both sides for future use. These fibers are wound into a circle and placed in the splice box. During the subsequent expansion, as new fibers are added to the box, the old fibers and new fibers stored in the box will cross and entangle with each other, becoming difficult to distinguish, causing great trouble for installation and maintenance. Summary of the invention

[0004] The present invention provides an expandable optical cable joint box, which can effectively solve the problem that old optical fibers and new optical fibers in a traditional joint box in the background art are crossed and entangled.

[0005] The present invention provides an expandable optical cable junction box, comprising:

[0006] The box body has mounting grooves at both ends;

[0007] A sealing plug is arranged in the installation groove, and the optical cable passes through the sealing plug;

[0008] Two winding assemblies are arranged in the box body, and each winding assembly includes:

[0009] The basic disk is provided with two basic winding areas, and a plurality of basic wire clamping grooves are provided in the circumference of each basic winding area;

[0010] A first fixture is arranged between the two basic winding areas; the first fixture is provided with a plurality of first slots extending along the length direction of the box body;

[0011] The expansion disk is provided with two expansion winding areas, each expansion winding area is installed in a corresponding basic winding area; a plurality of expansion card slots are arranged in the circumference of each expansion winding area;

[0012] The second fixture is arranged between the two extended winding areas and is provided with a plurality of second slots forming a certain angle with the length direction of the box body;

[0013] A cover plate, rotatably mounted on the base plate;

[0014] The optical fiber connection point is placed in the first card slot and the second card slot; the optical fiber is wound into a ring shape along the outer circumference of two basic winding areas on the basic disk; the optical fiber is wound into an "8" shape along the circumference of two extended winding areas on the extended disk.

[0015] Furthermore, the sealing plug includes a detachable first body and a second body, and the first body and the second body clamp the optical cable along the height direction of the box body.

[0016] Furthermore, the inner wall of the installation groove and the outer side surface of the sealing plug are both in a shape that gradually converges outward along the inside of the box body, and the inner wall of the installation groove and the outer side surface of the sealing plug are in close contact with each other.

[0017] Furthermore, the sealing plug also includes an elastic connecting section, and two ends of the elastic connecting section are respectively connected to the first split body and the second split body.

[0018] Further, the winding assembly is not fixedly placed in the box;

[0019] Both ends of the base plate along the length direction of the box body are provided with hooks, and the elastic connecting section is hooked on the hooks and is in a taut state.

[0020] Furthermore, a slide plate and a clamping plate are respectively provided at both ends of the base plate; the slide plate slides along the length direction of the box body; the clamping plate and the hook are both fixedly connected to the slide plate;

[0021] Two limiting grooves are arranged on the inner wall of each side of the box body at two ends of the winding assembly, and the openings of the limiting grooves are opposite to each other;

[0022] When the two slide plates move to the outer side of the box body to the limit position, the two clamping plates extend into the corresponding limit grooves respectively;

[0023] When the two slide plates move toward the inner side of the box body to the limit position, the two clamping plates move out of the corresponding limit grooves.

[0024] Furthermore, the winding assembly also includes a plurality of branching posts. When the slide plate moves toward the outside of the box body, the branching posts move away from the extended winding area, and when the slide plate moves toward the inside of the box body, the branching posts move toward the extended winding area.

[0025] Further, the plurality of branching posts include a first branching post and a second branching post;

[0026] The first branching posts are arranged at two ends of the base plate and are fixedly connected to the slide plate;

[0027] The middle section of the base plate is provided with a first waist hole extending along the width direction of the box body, the slide plate is provided with a second waist hole extending in a direction forming a certain angle with the width direction of the box body, and the second branching column passes through the first waist hole and the second waist hole at the same time.

[0028] Furthermore, both ends of the first slot are bent toward the inner side or the outer side of the box body at the same time.

[0029] Furthermore, the box body includes a first shell and a second shell fixedly connected to each other, a sealing groove is arranged on the surface of the first shell that fits with the second shell, and a sealing rib is arranged on the surface of the second shell that fits with the first shell, and the sealing rib extends into the sealing groove.

[0030] The technical solution of the present invention can achieve the following technical effects:

[0031] The present invention can effectively separate two groups of cables by combining the basic disk and the expansion disk and making the optical cable present different winding modes on the disk. The sealing plug of the present invention can be replaced according to the use requirements on site, thereby ensuring that the box body can maintain good sealing before and after the expansion. The two winding assemblies can further divide the cables, and the other winding assembly does not need to be moved during maintenance, thereby avoiding damage to the new optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the expandable optical cable junction box of the present invention;

[0034] Figure 2 It is a structural disassembly diagram of the expandable optical cable junction box in the present invention;

[0035] Figure 3 It is a structural schematic diagram of the winding assembly in the present invention;

[0036] Figure 4 A schematic diagram of the winding path of the optical fiber on the base disk in the present invention;

[0037] Figure 5 A schematic diagram of the winding path of the optical fiber on the expansion tray in the present invention;

[0038] Figure 6 This is a structural breakdown diagram of the bottom of the winding assembly in the present invention;

[0039] Figure 7 It is a schematic diagram of the structure of the sealing plug in the present invention;

[0040] Figure numerals: 1. box body; 11. installation groove; 12. limit groove; 2. sealing plug; 21. first sub-body; 22. second sub-body; 23. elastic connecting section; 3. base plate; 31. basic winding area; 32. basic wire clamping groove; 33. first waist hole; 4. first fixer; 5. extension plate; 51. extended winding area; 52. extended wire clamping groove; 6. second fixer; 7. cover plate; 81. hook; 82. slide plate; 82a, second waist hole; 83. clamping plate; 84. first branching column; 85. second branching column. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The present invention relates to an expandable optical cable junction box. Figures 1 to 6 As shown, it includes a box body 1, a sealing plug 2 and two winding assemblies. The specific structure of each component is as follows:

[0045] The box body 1 has a hollow structure inside, and mounting grooves 11 are arranged at both ends of the box body 1.

[0046] The sealing plug 2 is arranged in the installation groove 11, and the optical cable passes through the sealing plug 2; the sealing plug 2 is made of rubber material and can effectively seal the fitting part; the shape of the sealing plug 2 can be designed into various forms such as no hole, two holes and three holes according to the use requirements to meet different use requirements.

[0047] Two winding assemblies are arranged in the box body 1, and each winding assembly includes:

[0048] The basic disk 3 is provided with two basic winding areas 31, and a plurality of basic wire clamping grooves 32 are provided at the outermost circumferential edge of each basic winding area 31, and the notches of the basic wire clamping grooves 32 face the basic winding area 31;

[0049] The first fixture 4 is arranged between the two basic winding areas 31; the first fixture 4 is provided with a plurality of first card slots extending along the length direction of the box body 1, and the first card slots clamp the protective cover of the optical fiber splicing point to prevent the optical fiber splicing point from being twisted, stretched, etc., which may cause the splicing point to break;

[0050] The expansion disk 5 is provided with two expansion winding areas 51, each expansion winding area 51 is installed in a corresponding basic winding area 31, and the radius of the expansion winding area 51 is smaller than the basic winding area 31, and the height of the expansion winding area 51 is higher than the basic winding area 31, so that a groove body is formed between the expansion winding area 51 and the basic winding area 31; a plurality of expansion card slots 52 are provided at the outermost circumferential edge of each expansion winding area 51, and the slots of the expansion card slots 52 face the expansion winding area 51;

[0051] The second fixture 6 is disposed between the two extended winding areas 51 and is provided with a plurality of second slots forming a certain angle with the length direction of the box body 1;

[0052] The cover plate 7 is rotatably mounted on the base plate 3 .

[0053] The specific method of using the splice box is as follows: pass the two optical cables to be connected through the sealing plug 2 (depending on the layout of the cables on site, the two cables can be inserted into the box body 1 from the same sealing plug 2, or from the middle of two different sealing plugs 2), and peel off the outer rubber layer of the optical cable inserted into the box body 1 to expose the optical fiber; if the optical cable is basically not disassembled (such as user optical cable, etc.), then after the connection is completed, it can be Figure 4 As shown, the optical fiber connection point is placed in the first card slot, and then the reserved part of the optical fiber is wound into a ring along the outer circumference of the two basic winding areas 31 on the basic disk 3. After winding, the reserved optical cable is in a flat "O" shape, and the reserved optical fiber is placed in the basic card slot 32 to fix the position of the reserved optical fiber.

[0054] If the optical cable needs to be frequently disassembled and assembled (such as debugging the optical cable), or a newly added optical cable is added later, in order to avoid interference between its optical fiber and the previous optical fiber, such as Figure 5 As shown, at this time, it is necessary to place the connection points of these optical fibers in the second card slot, and then wind the reserved optical fiber on the expansion disk 5 along the two extended winding areas 51 to form an "8" shape, and put the reserved optical fiber into the extended card slot 52 to fix the position of the reserved optical fiber.

[0055] Through the combination of the basic plate 3 and the expansion plate 5, and making the optical cable present different winding modes on it, the two groups of cables can be effectively separated, and the sealing plug 2 can be replaced according to the use requirements on site, so as to ensure that the box body can maintain good sealing before and after the expansion. The two winding assemblies can also further divide the cables. For example, one is used to install the optical fiber of the old user, and the other is used to install the optical fiber of the new user during the expansion. In subsequent use, the optical fiber of the old user will be damaged first because it has been used for a relatively long time. When repairing, the other winding assembly does not need to be moved, thereby avoiding damage to the new optical fiber.

[0056] In order to facilitate the replacement of the sealing plug 2 during capacity expansion, the joint box has a special design for the structure of the sealing plug 2, such as Figure 7 As shown, the sealing plug 2 includes a detachable first body 21 and a second body 22, which clamp the optical cable along the height direction of the box body 1. In this way, when the optical cable is expanded, it is not necessary to remove the installed optical cable. Two wire clamping grooves are respectively provided on the first body 21 and the second body 22, and a raised sealing rib is provided in the wire clamping groove. The optical cable will be placed in the wire clamping groove. After the cable is installed, the sealing rib will form an interference fit with the outer side of the optical cable, thereby sealing this place. Under this structure, multiple sealing plugs 2 can be provided, and the first body 21 and the second body 22 of each sealing plug 2 have different numbers of wire clamping grooves to meet different usage requirements; multiple wire clamping grooves can also be provided in the first body 21 and the second body 22 of a sealing plug 2, and then for the wire clamping groove that does not need to be used, a solid rubber column with the same diameter as the optical cable is inserted therein, thereby sealing the corresponding part.

[0057] Preferably, the inner wall of the installation groove 11 and the outer side of the sealing plug 2 are both in a shape that gradually converges outward from the inside of the box body 1, and the inner wall of the installation groove 11 and the outer side of the sealing plug 2 fit together. This structure can achieve further sealing at the sealing plug 2 and protect the optical cable. The specific principle is: since the optical cable is usually pulled outward, under this structure, if the optical cable is pulled outward, it will drive the sealing plug 2 to move outward. At this time, the inner wall of the installation groove 11 that gradually converges outward will make the first sub-body 21 and the second sub-body 22 fit more closely, and the friction force on the optical cable will increase rapidly, thereby inhibiting the movement of the optical cable and protecting the optical fiber in the box body 1, especially the optical fiber connection point, from being pulled by external forces.

[0058] Preferably, the sealing plug 2 also includes an elastic connecting section 23, the two ends of which are respectively connected to the first sub-body 21 and the second sub-body 22. The elastic connecting section 23 can make the sealing plug 2 an integral part to avoid the loss of the first sub-body 21 and the second sub-body 22 during disassembly.

[0059] In traditional joint boxes, the winding assembly is usually fixed to the box body. Since there are multiple smooth optical fibers inside the optical cable, even if the outermost rubber layer of the optical cable is fixed, the optical fibers inside will still have a certain tendency to be pulled outwards as the optical cable moves and bends, which will cause the optical fibers inside the box to be pulled and cause the connection point to break. In order to solve the above problem, this joint box adopts the following structure:

[0060] Both winding assemblies are placed in the box body 1 in a non-fixed manner;

[0061] Hooks 81 are provided at both ends of the base plate 3 along the length direction of the box body 1 , and the elastic connecting section 23 is hooked on the hooks 81 and is in a taut state.

[0062] Through this structure, the winding assembly as a whole has a certain rotation space when subjected to tension. When the optical fiber is pulled outward, the force will be transmitted to the winding assembly through the optical fiber wound in the winding assembly, causing the winding assembly to rotate to a certain extent, thereby preventing the optical fiber from being pulled too much and causing it to break. At the same time, when the outer layer of the optical cable is pulled outward, the sealing plug 2 will clamp the optical cable, and the elastic connecting section 23 at the other end will first suppress the sealing plug 2 at this place from moving out too much, avoiding the sealing plug 2 from exerting too much pressure on the optical cable; and when the external force is withdrawn, if this clamping force is not released, the sealing ribs in the sealing plug 2 will continue to exert pressure on the optical cable, pressing the internal optical fiber. At this time, if the problem of the optical fiber being pulled outward occurs at the other sealing plug 2, then the optical fibers at both ends will be in a tensioned state, causing the optical fiber to break easily. Under this structure, when the force pulling the outer layer of the optical cable is removed, the elastic connecting section 23 at the other end will pull the entire winding assembly and the sealing plug 2 inward until the pulling forces of the two elastic connecting sections 23 are the same, thereby releasing the clamping force of the sealing plug 2 and avoiding excessive clamping force on the optical cable.

[0063] Although the winding assembly in the joint box needs to be arranged in an unfixed manner, it is still necessary to avoid excessive shaking to cause new problems. Therefore, the joint box is also provided with:

[0064] The two ends of the base plate 3 are also provided with a slide plate 82 and a clamping plate 83 respectively; the slide plate 82 slides along the length direction of the box body 1; the clamping plate 83 and the hook 81 are fixedly connected to the slide plate 82;

[0065] Two limiting grooves 12 are arranged on the inner wall of each side of the box body 1 at the two ends of the winding assembly, and the openings of the limiting grooves 12 are opposite to each other;

[0066] After the elastic connecting section 23 is hooked on the hook 81, it will drive the two slide plates 82 to move to the outer side of the box body 1 to the limit position. At this time, the two clamping plates 83 extend into the corresponding limit grooves 12 respectively, thereby limiting the movement of the base plate 3 so that it can only rotate without shaking.

[0067] After the elastic connecting section 23 is removed from the hook 81, the two slides 82 are manually pushed toward the inner side of the box body 1 to the extreme position. At this time, the two snap-on plates 83 are moved out of the corresponding limit grooves 12, and the base plate 3 can be removed, so that the winding assembly can be separated from the box body 1, which is convenient for personnel to operate.

[0068] In order to better restrict the optical fiber and avoid mutual interference between the optical fibers in the basic winding area 31 and the extended winding area 51, it is preferred that a plurality of branching posts are further provided in the winding assembly, and the branching posts are located between the boundaries of the basic winding area 31 and the extended winding area 51. When the slide plate 82 moves toward the outside of the box body 1 (that is, after the installation is completed, the elastic connecting section 23 is put on the hook 81), the branching posts are away from the extended winding area 51, thereby supporting the optical fiber in the basic winding area 31 and preventing it from moving toward the extended winding area 51; when the slide plate 82 moves toward the inside of the box body 1, the branching posts are close to the extended winding area 51, making space for taking and placing the optical fiber in the basic winding area 31, so as to facilitate operation by personnel.

[0069] Since only the slide plate 82 can be used as the power source of the branching pole in the winding assembly, the branching poles at different positions may not have the same moving path as the slide plate 82, so it is necessary to split the multiple branching poles into the first branching pole 84 and the second branching pole 85;

[0070] The first branching posts 84 are arranged at both ends of the base plate 3. Here, the first branching posts 84 move along the length direction of the box body 1 similarly to the slide plate 82, so it is sufficient to fix it to the slide plate 82;

[0071] The second branching column 85 needs to be located at the center of the winding assembly. Here, the second branching column 85 moves along the width direction of the box body 1. Therefore, it is necessary to set a first waist hole 33 extending along the width direction of the box body 1 in the middle section of the base plate 3, and set a second waist hole 82a extending in a direction forming a certain angle with the width direction of the box body 1 on the slide plate 82, so that the second branching column 85 passes through the first waist hole 33 and the second waist hole 82a at the same time, so as to realize the movement of the second branching column 85.

[0072] It is preferred to bend both ends of the first slot toward the inside or outside of the box body 1 at the same time, so that the first slot forms a V-shape, thereby ensuring a stronger clamping effect on the protective cover of the optical fiber connection point, and preventing the optical fiber connection point from detaching from the first slot when the winding assembly is disassembled or rotated.

[0073] The box body 1 is preferably designed to be a first shell and a second shell that can be fixedly connected to each other. This split design makes it easier for personnel to perform installation and wiring operations. A sealing groove can be provided on the surface of the first shell that fits with the second shell, and a sealing rib can be provided on the surface of the second shell that fits with the first shell. The sealing rib extends into the sealing groove. In this way, the sealing of the fitting surfaces of the two shells is increased, thereby better protecting the optical fiber inside the box body 1.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An expandable optical cable junction box, characterized in that: include: The box body (1) is provided with mounting grooves (11) at both ends; A sealing plug (2) is arranged in the installation groove (11), the optical cable passes through the sealing plug (2), and an elastic connecting section (23) is also arranged; Two winding assemblies are flexibly placed in the box body (1), each winding assembly comprising: The basic plate (3) is provided with two basic winding areas (31), each of the basic winding areas (31) is provided with a plurality of basic wire clamping grooves (32) in the circumferential direction, and hooks (81) are provided at both ends, and the elastic connecting section (23) is hooked on the hooks (81) and is in a tight state; A first fixture (4) is arranged between the two basic winding areas (31); the first fixture (4) is provided with a plurality of first slots extending along the length direction of the box body (1); The expansion disk (5) is provided with two expansion winding areas (51), each of the expansion winding areas (51) is installed in a corresponding one of the basic winding areas (31), and the radius of the expansion winding area (51) is smaller than that of the basic winding area (31), and the height of the expansion winding area (51) is higher than that of the basic winding area (31); a plurality of expansion card slots (52) are arranged in the circumference of each of the expansion winding areas (51); A second fixer (6) is arranged between the two extended winding areas (51) and is provided with a plurality of second slots forming a certain angle with the length direction of the box body (1); A cover plate (7) rotatably mounted on the base plate (3); The optical fiber connection point is placed in the first card slot and the second card slot; the optical fiber is wound into a ring shape along the outer circumference of the two basic winding areas (31) on the basic disk (3); and the optical fiber is wound into an "8" shape along the circumference of the two extended winding areas (51) on the extended disk (5).

2. The expandable optical cable junction box according to claim 1, characterized in that: The sealing plug (2) comprises a detachable first body (21) and a second body (22), wherein the first body (21) and the second body (22) clamp the optical cable along the height direction of the box body (1); Two ends of the elastic connecting section (23) are respectively connected to the first sub-body (21) and the second sub-body (22).

3. The expandable optical cable junction box according to claim 2, characterized in that: The inner wall of the installation groove (11) and the outer side surface of the sealing plug (2) are both in a shape that gradually converges outward along the inside of the box body (1), and the inner wall of the installation groove (11) and the outer side surface of the sealing plug (2) are in close contact with each other.

4. The expandable optical cable splice box according to claim 2, characterized in that: A slide plate (82) and a clamping plate (83) are respectively provided at both ends of the base plate (3); the slide plate (82) slides along the length direction of the box body (1); the clamping plate (83) and the hook (81) are both fixedly connected to the slide plate (82); Two limiting grooves (12) are arranged on the inner wall of each side of the box body (1) and are located at two ends of the winding assembly, and the openings of the limiting grooves (12) are opposite to each other; When the two slide plates (82) move to the outer side of the box body (1) to the limit position, the two clamping plates (83) extend into the corresponding limiting grooves (12) respectively; When the two slide plates (82) move toward the inside of the box body (1) to the limit position, the two clamping plates (83) both move out of the corresponding limit grooves (12).

5. The expandable optical cable splice box according to claim 4, characterized in that: The winding assembly also includes a plurality of branching posts. When the slide plate (82) moves toward the outside of the box body (1), the branching posts move away from the extended winding area (51), and when the slide plate (82) moves toward the inside of the box body (1), the branching posts move toward the extended winding area (51).

6. The expandable optical cable splice box according to claim 5, characterized in that: The plurality of branching posts include a first branching post (84) and a second branching post (85); The first branching column (84) is arranged at two ends of the base plate (3) and is fixedly connected to the slide plate (82); The middle section of the base plate (3) is provided with a first waist hole (33) extending along the width direction of the box body (1), the slide plate (82) is provided with a second waist hole (82a) extending in a direction forming a certain angle with the width direction of the box body (1), and the second branching column (85) passes through the first waist hole (33) and the second waist hole (82a) at the same time.

7. The expandable optical cable splice box according to claim 1, characterized in that: Both ends of the first card slot are bent toward the inside or outside of the box body (1) at the same time.

8. The expandable optical cable splice box according to claim 1, characterized in that: The box body (1) comprises a first shell and a second shell fixedly connected to each other, a sealing groove is provided on the surface of the first shell that is in contact with the second shell, and a sealing rib is provided on the surface of the second shell that is in contact with the first shell, and the sealing rib extends into the sealing groove.

Images