Wire inlet port sealing structure and connector box

Abstract

The utility model relates to a wire inlet port sealing structure and a connector box. The outer side of a core column is sleeved with an elastic plug block, and the top of the core column is provided with an upper pressing block; the lower pressing block is provided with a core column avoiding channel, the outer side of the bottom of the lower pressing block is provided with a surrounding edge, and a wire inlet port clamping groove is formed between the surrounding edge and the lower pressing block. The vertical adjusting assembly is installed in the core column avoiding channel and connected with the core column. The vertical adjusting assembly is used for adjusting the distance between the lower pressing block and the upper pressing block so as to extrude the elastic plug block. When in use, the end part of the wire inlet port of the connector box which can be sealed by thermal shrinkage is clamped in the wire inlet port clamping groove, the core column and the upper pressing block of the elastic plug block are placed in the wire inlet port, and the vertical adjusting assembly is adjusted, so that the elastic plug block is extruded to plug the inner wall of the wire inlet port, and the sealing is completed, and therefore, the wire inlet port does not need to be changed; mechanical sealing can be adopted, and the cable diameter sealing range of the connector box is expanded; and meanwhile, optical cables outside the box body are fixed through the in-box fixing piece and the reinforcing core fixing plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical cable joint box, in particular to an inlet port sealing structure and a joint box. BACKGROUND

[0002] The optical cable joint box is a commonly used device in communication and network systems, which is used for optical fiber distribution, storage and protective connection between optical fibers in an optical fiber network. In order to ensure stable signal transmission, the optical cable joint box is required to have good sealing performance to protect the precise connection of the optical fibers therein.

[0003] In the related art, the end cover sealing of the cap type joint box is mainly realized by heat shrink sealing and mechanical sealing. Since the heat shrink sealing is limited by the heat shrink ratio of the heat shrink tube, the heat shrink sealing is generally used for sealing of large cable diameters, and the mechanical sealing is limited by the thickness of the cylinder wall and the sealing plug wall, and is generally used for sealing of small cable diameters. The mechanical sealing requires adjustment of the structure of the inlet port or the end cover of the joint box, which makes the end cover structure complex and the operation cumbersome. This results in that the joint box using the heat shrink sealing is difficult to directly apply the mechanical sealing, and the sealing range of the cable diameter of the joint box is small. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide an inlet port sealing structure and a joint box to solve the problem that the end cover of the cap type joint box using the heat shrink sealing is difficult to apply the mechanical sealing, resulting in a small sealing range of the cable diameter of the joint box.

[0005] In a first aspect, an inlet port sealing structure is provided, which comprises:

[0006] a core column, the outer side of which is sleeved with an elastic plug block, and the top of which is provided with an upper pressing block;

[0007] a lower pressing block, the upper side of which is provided with a core column avoiding channel, and the bottom outer side of which is provided with a surrounding edge, and the surrounding edge and the lower pressing block form an inlet port clamping groove;

[0008] a vertical adjusting assembly, which is installed in the core column avoiding channel and connected with the core column; the vertical adjusting assembly is used for adjusting the distance between the lower pressing block and the upper pressing block to extrude the elastic plug block.

[0009] In some embodiments, a first vertical screw hole is arranged in the core column;

[0010] a second vertical screw hole is arranged in the bottom of the lower pressing block and communicated with the core column avoiding channel;

[0011] the vertical adjusting assembly comprises an internal hexagonal screw; the internal hexagonal screw is connected with the second vertical screw hole and the first vertical screw hole.

[0012] In some embodiments, the lower pressing block, the upper pressing block and the elastic plug block are each provided with a cable passage.

[0013] In some embodiments, the top of the upper pressing block is provided with an in-box fixing member, the in-box fixing member is provided with a connecting hole, the connecting hole has a design length in the direction parallel to the core shaft of the core column; and the design length is equal to the maximum moving distance of the upper pressing block.

[0014] In some embodiments, the in-box fixing member comprises a vertically arranged connecting plate, the connecting plate is provided with a reinforcing core fixing plate, and the reinforcing core fixing plate is provided with a plurality of fixing screw holes; each fixing screw hole corresponds to a reinforcing pressing plate, and the reinforcing pressing plate is provided with a fastening screw connected with the fixing screw hole.

[0015] In some embodiments, the reinforcing core fixing plate is vertically connected to the connecting plate on the vertical plane of the connecting plate, the plurality of fixing screw holes are vertically spaced, and the reinforcing pressing plates are distributed on both sides of the thickness direction of the reinforcing core fixing plate.

[0016] In some embodiments, the bottom of the lower pressing block and the periphery of the second vertical screw hole are provided with a plurality of arc-shaped surrounding plates.

[0017] In some embodiments, the vertical length of the core column is equal to the vertical length of the elastic plug block.

[0018] In a second aspect, a joint box is provided, comprising:

[0019] The end cover is provided with a plurality of wire inlet ports, and each wire inlet port is connected with a wire inlet port sealing structure.

[0020] In some embodiments, the top of the upper pressing block of the wire inlet port sealing structure is provided with an in-box fixing member, the in-box fixing member is provided with a connecting hole, the connecting hole has a design length in the direction parallel to the core shaft of the core column; and the design length is equal to the maximum moving distance of the upper pressing block.

[0021] The joint box is provided with a fixing part, and the fixing part is connected with the connecting hole of the in-box fixing member through a screw.

[0022] The technical scheme provided by the present application has the beneficial effects of:

[0023] This application provides an inlet port sealing structure and a junction box. An elastic plug is fitted around the outer side of the core post, and an upper pressure block is provided at the top. A core post clearance channel is provided on the lower pressure block, and a surrounding edge is provided on its bottom outer side, forming an inlet port slot between the surrounding edge and the lower pressure block. A vertical adjustment component is installed within the core post clearance channel and connected to the core post. The vertical adjustment component is used to adjust the distance between the lower and upper pressure blocks to compress the elastic plug. In use, the end of the inlet port of the junction box, which can be heat-shrink sealed, is snapped into the inlet port slot. The core post, elastic plug, and upper pressure block are placed into the inlet port. Then, the vertical adjustment component is adjusted so that the elastic plug is compressed to seal the inner wall of the inlet port, completing the seal. Therefore, without altering the inlet port, a mechanical seal can be used, increasing the cable diameter sealing range of the junction box. Simultaneously, the internal fixing component and the reinforcing core fixing plate integrate the cable fixing and reinforcing core fixing structures into the inlet port sealing structure, enabling external optical cable fixing operations. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 Provides a schematic diagram of heat shrinkable junction boxes for related technologies;

[0026] Figure 2 This is an overall schematic diagram of the inlet port sealing structure provided in the embodiments of this application;

[0027] Figure 3 An exploded view of the inlet port sealing structure provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram showing the connection between the inlet port sealing structure and the junction box end cover provided in an embodiment of this application.

[0029] In the diagram: 1. Core column; 2. Elastic plug; 3. Upper pressure block; 4. Surrounding edge; 5. Lower pressure block; 6. Vertical adjustment component; 7. Fixing part; 8. Optical cable channel; 9. Internal fixing component; 10. Connection hole; 11. Reinforcing core fixing plate; 12. Fixing screw hole; 13. Reinforcing pressure plate; 14. Fastening screw; 15. Arc-shaped surrounding plate; 16. End cap; 17. Inlet port. Detailed Implementation

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] In the cap joint box, the end cover sealing of the optical cable joint box is mainly realized by heat shrink sealing and mechanical sealing. Since the heat shrink sealing is limited by the heat shrink ratio of the heat shrink tube, the heat shrink sealing is generally used for sealing of large cable diameters, and the mechanical sealing is limited by the wall thickness of the barrel and the sealing plug, and is generally used for sealing of small cable diameters. The mechanical sealing needs to adjust the structure of the wire inlet port or the end cover of the joint box, which makes the end cover structure complex and the operation cumbersome. This leads to the fact that the joint box using the heat shrink sealing is difficult to directly apply the mechanical sealing, and the joint box cannot adapt to the upper and lower limit of the extreme cable diameter, and the cable diameter sealing range is small.

[0032] Referring to Figure 1 For the heat shrink sealing method, the heat shrink tube A seals the entering port of the wire inlet port 17 on the optical cable B and the end cover 16. One feature of this solution is that a field power source or a fire source is needed to perform the heat shrink operation of the tube; and once the optical cable has been installed and sealed, it cannot be easily removed. In addition, since the heat shrink tube operation needs a certain space, the number of entering ports is limited.

[0033] Therefore, it is necessary to propose a joint box which can apply mechanical sealing without changing the structure of the end cover, so that the joint box can meet a larger cable diameter sealing range.

[0034] To solve the above problems, the embodiments of the present application provide a wire inlet port sealing structure and a joint box to solve the problem that the end cover of the cap joint box in the related art which applies heat shrink sealing is difficult to apply mechanical sealing, leading to a small cable diameter sealing range of the joint box.

[0035] Referring to Figures 2-4 A wire inlet port sealing structure includes:

[0036] A core column 1 has an elastic plug 2 sleeved on the outer side thereof, and an upper pressing block 3 arranged at the top thereof;

[0037] A lower pressing block 5 is arranged on the upper pressing block 3, and has a core column avoiding channel arranged thereon, and a surrounding edge 4 arranged on the bottom outer side thereof, so as to form a wire inlet port clamping groove between the surrounding edge 4 and the lower pressing block 5. The lower pressing block 5, the upper pressing block 3 and the elastic plug 2 are all provided with optical cable channels 8.

[0038] The vertical adjusting assembly 6 is installed in the core column avoiding channel and connected with the core column 1. The vertical adjusting assembly 6 is used to adjust the distance between the lower pressing block 5 and the upper pressing block 3 to extrude the elastic plug 2.

[0039] In use, the end of the wire inlet port of the joint box with heat shrink sealing is clamped in the wire inlet port clamping groove, the core column 1, the elastic plug 2 and the upper pressing block 3 are put into the wire inlet port, and then the vertical adjusting assembly 6 is adjusted so that the elastic plug 2 is extruded to block the inner wall of the wire inlet port, the sealing is completed, and the mechanical sealing can be used without changing the wire inlet port, thereby improving the sealing range of the cable diameter of the joint box.

[0040] The above surrounding edge 4 can be a blocking ring, which does not form a wire inlet port clamping groove with the outer side of the lower pressing block 5, and only needs to ensure that the diameter of the blocking ring is greater than the outer diameter of the wire inlet port 17.

[0041] In some preferred embodiments, the vertical adjusting assembly 6 can be a telescopic member, such as an electric telescopic rod. The top of the electric telescopic rod is connected with the core column 1, and the electric telescopic rod is located in the core column avoiding channel.

[0042] Of course, there is an optimal way to ensure the cost while achieving adjustment and facilitating installation, which is as follows:

[0043] The core column 1 is provided with a first vertical screw hole;

[0044] The bottom of the lower pressing block 5 is provided with a second vertical screw hole which is in communication with the core column avoiding channel;

[0045] The vertical adjusting assembly 6 comprises an internal hexagonal screw. The internal hexagonal screw is connected with the second vertical screw hole and the first vertical screw hole.

[0046] The above structure is simple, and the wire inlet port sealing structure can be divided into multiple parts to facilitate the fixation of the optical fibers of the cable.

[0047] The vertical length of the core column 1 is equal to the vertical length of the elastic plug 2. This arrangement can avoid ineffective rotation of the internal hexagonal screw, i.e., avoid the situation that the elastic plug 2 and the lower pressing block 5 are not extruded after the internal hexagonal screw is rotated.

[0048] Reference Figure 2 And Figure 4 In some preferred embodiments, since the fixation force of the cable is weak only by the friction between the elastic plug 2 and the inner wall of the wire inlet port, the following arrangement is provided:

[0049] The top of the upper pressing block 3 is provided with an in-box fixing member 9. The in-box fixing member 9 is provided with a connecting hole 10 which has a designed length in the direction parallel to the core shaft of the core column 1. The designed length is equal to the maximum moving distance of the upper pressing block 3.

[0050] The above not only realizes, strengthens the connection stability of the optical fiber of the cable in the joint box, but also does not affect the above adjustment function, that is, the design length of the connecting hole 10 meets the downward movement demand of the upper pressing block 3, and the connecting hole 10 is a long waist-shaped hole.

[0051] In some preferred embodiments, the joint box cable fixing and reinforcing core fixing are generally connected with the structure in the joint box. The following describes the realization of the optical cable fixing operation outside the box body:

[0052] The in-box fixing member 9 includes a vertically arranged connecting plate, the connecting plate is provided with a reinforcing core fixing plate 11, and the reinforcing core fixing plate 11 is provided with a plurality of fixing screw holes 12; each fixing screw hole 12 corresponds to a reinforcing pressing plate 13, and the reinforcing pressing plate 13 is provided with a fastening screw 14 connected with the fixing screw hole 12.

[0053] The reinforcing core fixing plate 11 is vertically connected on the vertical plane of the connecting plate, and the connecting hole 10 is located above the reinforcing pressing plate 13; the plurality of fixing screw holes 12 are vertically spaced, and the reinforcing pressing plates 13 are distributed on both sides in the thickness direction of the reinforcing core fixing plate 11. The distribution of the reinforcing pressing plates 13 on both sides can increase the fixing points on the reinforcing core fixing plate 11, avoid interference between the reinforcing pressing plates 13, and facilitate the fixing of the optical fiber.

[0054] The structure of the cable entry fixing and the reinforcing core fixing is integrated on the wire entry port sealing structure, so that the optical cable fixing operation outside the box body is realized, and the construction steps are accelerated.

[0055] In some preferred embodiments, a plurality of arc-shaped surrounding plates 15 are arranged at the bottom of the lower pressing block 5 and around the second vertical screw hole. The arc-shaped surrounding plates 15 facilitate the entry and limiting of the optical fiber of the cable.

[0056] The application also provides a joint box, which comprises:

[0057] The end cover 16 is provided with a plurality of wire entry ports 17, each of which is connected with one or more wire entry port sealing structures.

[0058] Through the above arrangement, the sealing of the wire entry port 17 can be completed without heat shrinkage, that is, in use, the end part of the wire entry port of the joint box using heat shrinkage is clamped in the wire entry port clamping groove, the core column 1, the elastic plug 2 and the upper pressing block 3 are put into the wire entry port, then the vertical adjusting assembly 6 is adjusted, so that the elastic plug 2 is extruded to block the inner wall of the wire entry port, the sealing is completed, and thus the mechanical sealing can be used without changing the wire entry port, thereby improving the cable diameter sealing range of the joint box.

[0059] Further, the top of the upper pressing block 3 of the incoming line port sealing structure is provided with an in-box fixing part 9, the in-box fixing part 9 is provided with a connecting hole 10, the connecting hole 10 has a designed length in the direction of the shaft of the core column 1, and the designed length is equal to the maximum moving distance of the upper pressing block 3.

[0060] The in-box fixing part 9 is provided with a fixing part 7, and the fixing part 7 is connected with the connecting hole 10 of the in-box fixing part 9 through a screw.

[0061] The above not only realizes the connection stability of the optical fiber of the cable in the joint box, but also does not affect the above adjustment function, that is, the designed length of the connecting hole 10 meets the downward moving requirement of the upper pressing block 3, and the connecting hole 10 is a long waist-shaped hole.

[0062] In addition, the in-box fixing part 9 includes a vertically arranged connecting plate, the connecting plate is provided with a reinforcing core fixing plate 11, the reinforcing core fixing plate 11 is provided with a plurality of fixing screw holes 12, each fixing screw hole 12 corresponds to a reinforcing pressing plate 13, and the reinforcing pressing plate 13 is provided with a fastening screw 14 connected with the fixing screw hole 12. The structure of the cable fixing and the reinforcing core fixing is integrated on the incoming line port sealing structure, so that the optical cable fixing operation is realized outside the box body, and the construction steps are accelerated.

[0063] The beneficial effects of the present application are as follows:

[0064] (1) The end part of the incoming line port of the joint box that can be sealed by heat shrinkage is clamped in the incoming line port clamping groove, the core column 1, the elastic plug block 2 and the upper pressing block 3 are put into the incoming line port, then the vertical adjusting assembly 6 is adjusted, so that the elastic plug block 2 is extruded to block the inner wall of the incoming line port, the sealing is completed, and thus the mechanical sealing can be adopted without changing the incoming line port, and the sealing range of the cable diameter of the joint box is improved.

[0065] (2) The in-box fixing part 9 is provided with a fixing part 7, and the fixing part 7 is connected with the connecting hole 10 of the in-box fixing part 9 through a screw, which increases the fixing point in the joint box, and avoids that the incoming line port sealing structure falls off from the incoming line port 17.

[0066] In addition, the in-box fixing part 9 includes a vertically arranged connecting plate, the connecting plate is provided with a reinforcing core fixing plate 11, the reinforcing core fixing plate 11 is provided with a plurality of fixing screw holes 12, each fixing screw hole 12 corresponds to a reinforcing pressing plate 13, and the reinforcing pressing plate 13 is provided with a fastening screw 14 connected with the fixing screw hole 12. After assembly, the optical cable is inserted into the cable inlet of the incoming line port, the reinforcing core is fixed on the reinforcing pressing plate 13, then the entire incoming line port sealing structure is assembled into the base, the connecting screw at the top is brought (not locked), the internal hexagonal screw is tightened, the upper pressing block 3 is extruded by the lower pressing block 5, and thus the sealing is realized, and finally the connecting screw at the top of the in-box fixing part 9 is locked.

[0067] The structure of fixing the incoming cable and reinforcing the core is integrated on the incoming port sealing structure, so that the fixing operation of the optical cable is performed outside the box body, and the construction steps are accelerated.

[0068] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0070] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An incoming line port seal structure, characterized by, It comprises: a core column (1) with an elastic plug (2) on its outer side and an upper pressing block (3) on its top; a lower pressing block (5) with a core column avoiding channel on its top and a surrounding edge (4) on its bottom, forming a wire inlet port clamping groove between the surrounding edge (4) and the lower pressing block (5); a vertical adjusting assembly (6) installed in the core column avoiding channel and connected with the core column (1), used to adjust the distance between the lower pressing block (5) and the upper pressing block (3) to squeeze the elastic plug (2).

2. The wire inlet port sealing structure according to claim 1, wherein: a first vertical screw hole is arranged in the core column (1); a second vertical screw hole is arranged in the bottom of the lower pressing block (5) and communicated with the core column avoiding channel; the vertical adjusting assembly (6) comprises an Allen screw connected with the second vertical screw hole and the first vertical screw hole.

3. The wire inlet port sealing structure according to claim 1, wherein: optical cable channels (8) are arranged on the lower pressing block (5), the upper pressing block (3) and the elastic plug (2).

4. The wire inlet port sealing structure according to claim 1, wherein: a box-in fixing member (9) is arranged on the top of the upper pressing block (3), the box-in fixing member (9) is provided with a connecting hole (10) with a designed length in the direction parallel to the central axis of the core column (1), and the designed length is equal to the maximum moving distance of the upper pressing block (3).

5. The wire inlet port sealing structure according to claim 4, wherein: the box-in fixing member (9) comprises a vertically arranged connecting plate, the connecting plate is provided with a reinforcing core fixing plate (11), the reinforcing core fixing plate (11) is provided with a plurality of fixing screw holes (12), each fixing screw hole (12) corresponds to a reinforcing pressing plate (13), and the reinforcing pressing plate (13) is provided with a fastening screw (14) connected with the fixing screw hole (12).

6. The wire inlet port sealing structure according to claim 5, wherein: the reinforcing core fixing plate (11) is vertically connected to the vertical plane of the connecting plate, the plurality of fixing screw holes (12) are vertically spaced, and the reinforcing pressing plates (13) are distributed on both sides of the thickness direction of the reinforcing core fixing plate (11).

7. The wire inlet port sealing structure according to claim 2, wherein: a plurality of arc-shaped surrounding plates (15) are arranged on the bottom of the lower pressing block (5) and around the second vertical screw hole.

8. The wire inlet port sealing structure according to claim 1, wherein: the vertical length of the core column (1) is equal to the vertical length of the elastic plug (2).

9. A splice holder, characterized by It comprises: an end cover (16) provided with a plurality of wire inlet ports (17) each connected with a wire inlet port sealing structure according to claim 1.

10. The joint box according to claim 9, wherein: The top of the upper pressing block (3) of the incoming line port sealing structure is provided with an in-box fixing part (9), the in-box fixing part (9) is provided with a connecting hole (10), the connecting hole (10) has a design length in the direction of the core shaft in the parallel core column (1); the design length is equal to the maximum moving distance of the upper pressing block (3); The joint box is provided with a fixing part (7), and the fixing part (7) is connected with the connecting hole (10) of the in-box fixing part (9) through a screw.

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