An optical cable joint box suitable for connecting part of optical cable cores

Abstract

The present invention relates to the technical field of joint boxes, and specifically discloses an optical cable joint box suitable for connecting part of the optical cable cores, including a joint box upper cover and a joint box lower cover, the edges of the joint box upper cover and the joint box lower cover are both provided with burrs, and the burrs of the joint box upper cover and the joint box lower cover are connected together by bolts; an installation cavity is formed between the joint box upper cover and the joint box lower cover, and an optical fiber fusion tray is arranged in the installation cavity; and also includes a support frame, the upper end and the bottom end of the support frame are both provided with two semicircular card grooves, the support frame is arranged between the ends of one end of the joint box upper cover and the joint box lower cover, the joint box upper cover and the joint box lower cover are provided with semicircular installation grooves corresponding to the semicircular card grooves of the support frame, and the end faces opposite to the ends of the other ends of the joint box upper cover and the joint box lower cover are both provided with two semicircular optical cable access ports. The advantage of the present invention is that it can be applied to the situation where part of the optical cable cores need to be connected.

Description

Technical Field

[0001] The invention relates to the technical field of joint boxes, in particular to an optical cable joint box suitable for connecting part of optical cable cores. Background Art

[0002] The optical cable splice box is a protective device that provides optical fiber splicing, cable sealing and mechanical strength continuity between optical cables. It has the functions of restoring the integrity of optical cable protection, providing electrical connectivity, grounding or disconnection of metal components in the optical cable, protecting the optical cable joints from environmental influences, placing optical fiber joints and storing excess optical fiber. In today's developed communication network system, optical communication plays an important role. With the strong demand of the communication market, my country has carried out large-scale construction of communication facilities with optical fiber replacing copper in recent years, and optical cable splice boxes are increasingly used.

[0003] According to the investigation on the use of optical cable joint boxes by the three major communication operators, China Telecom, China Unicom and China Mobile, the current optical cable joint boxes use a whole optical cable to connect with another whole optical cable. However, in actual use, there are situations where only part of the optical cable core in the optical cable needs to be connected with another optical cable, and the remaining optical cable core continues to be used with the original optical cable. The existing optical cable joint boxes cannot meet such installation requirements. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an optical cable splice box suitable for connecting part of the optical cable core. The purpose of the present invention is achieved by the following technical scheme: an optical cable splice box suitable for connecting part of the optical cable core, comprising an upper cover of the splice box and a lower cover of the splice box, the edges of the upper cover of the splice box and the lower cover of the splice box are both provided with burrs, and the burrs of the upper cover of the splice box and the burrs of the lower cover of the splice box are connected together by bolts;

[0005] An installation cavity is formed between the upper cover and the lower cover of the joint box, and an optical fiber splicing tray is arranged in the installation cavity; it also includes a support frame, and the upper end and the bottom end of the support frame are both provided with two semicircular card grooves, and the support frame is arranged between the ends of the upper cover and one end of the lower cover of the joint box, and the upper cover and the lower cover of the joint box are provided with semicircular installation grooves corresponding to the semicircular card grooves of the support frame, and the end surfaces opposite to the ends of the other ends of the upper cover and the lower cover of the joint box are both provided with two semicircular optical cable access ports, and the semicircular optical cable access ports of the upper cover of the joint box and the semicircular optical cable access ports of the lower cover of the joint box constitute two optical cable access holes;

[0006] A plurality of fixing frames are arranged at one end of the support frame arranged in the installation cavity, and the plurality of fixing frames are distributed along an arc path. Specifically, a sealing groove is arranged on the flash edge of the lower cover of the joint box, a sealing ring is arranged in the sealing groove, and the upper cover of the joint box and the lower cover of the joint box are sealed by pressing the sealing ring.

[0007] Specifically, an integrated optical cable fixing frame is provided at the optical cable access hole at one end of the installation cavity away from the support frame. Specifically, the two semicircular slots at the same end of the support frame have an angle; correspondingly, the semicircular installation slots of the upper cover and the lower cover of the junction box also have an angle.

[0008] Specifically, the fixing frame includes two mounting posts and two fixing clamps. The mounting post is a stepped shaft, which includes a first section, a second section and a third section arranged in sequence. The diameter of the first section is smaller than the diameter of the third section. The first section and the second section are both provided with threads. The fixing clamp includes two semicircular fixing hoops, and the two semicircular fixing hoops are symmetrically arranged to form a circular ring fixing clamp. Both ends of the semicircular fixing hoops are provided with mounting holes. The two fixing clamps are sleeved on the two mounting posts by being arranged in the mounting holes. The two fixing clamps are respectively sleeved on the first section and the second section, and the first section and the second section are threadedly connected with fastening nuts to fix the two fixing clamps on the first section and the second section respectively.

[0009] Specifically, the semicircular card slot, the semicircular installation slot and the semicircular optical cable access port are all provided with a pleated sealing rubber pad.

[0010] Specifically, fixing holes are provided at both ends of the support frame, and the support frame is fixed to the lower cover of the joint box by means of bolts passing through the fixing holes and being threadedly connected with the lower cover of the joint box.

[0011] Specifically, sealing protrusions are provided at the upper and lower ends of the support frame, and grooves are provided corresponding to the sealing protrusions at the upper cover and the lower cover of the joint box, and a sealing rubber ring is provided in the groove. The sealing protrusion is placed in the groove and cooperates with the sealing rubber ring to seal the support frame with the upper cover and the lower cover of the joint box respectively.

[0012] The present invention has the following advantages:

[0013] The present invention arranges a support frame between the upper cover and the lower cover of the joint box, and the top and bottom of the support frame are both provided with two semicircular card grooves, and the two semicircular card grooves on the same side correspond to the entry and exit of an optical cable, and the semicircular card grooves on the support frame and the semicircular installation grooves of the upper cover and the lower cover of the joint box form an optical cable access hole, and after the optical cable is bent, the bent portion is located in the installation cavity, and then the two ends of the bent portion are respectively stuck in the two optical cable access holes on the same side of the support frame, and the optical fiber core in the optical cable is stripped out at the bent portion and then connected with the optical cable core of another optical cable, so that the access of two optical cables can be met, and it can be suitable for the situation that some optical cable cores need to be connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the joint box of the present invention;

[0015] Figure 2 It is a schematic diagram of the side view structure of the joint box of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the lower cover of the joint box of the present invention;

[0017] Figure 4 It is a schematic diagram of the support frame structure of the present invention;

[0018] Figure 5 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0019] Figure 6 It is a schematic diagram of the mounting column structure of the present invention;

[0020] In the figure: 1-junction box lower cover, 2-junction box upper cover, 3-flash, 4-support frame, 41-semicircular card slot, 42-sealing protrusion, 43-fixing hole, 5-semicircular mounting groove, 6-sealing groove, 7-optical fiber fusion tray, 8-integrated optical cable fixing frame, 9-semicircular optical cable access port, 10-pleated sealing pad, 11-fixing frame, 111-installing column, 1111-third section, 1112-second section, 1113-first section, 12-installing cavity. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description. Figure 1-Figure 6 As shown, an optical cable splice box suitable for connecting part of the optical cable cores comprises a splice box upper cover 2 and a splice box lower cover 1, the edges of the splice box upper cover 2 and the splice box lower cover 1 are both provided with burrs 3, and the burrs 3 of the splice box upper cover 2 and the burrs 3 of the splice box lower cover 1 are connected together by bolts;

[0025] An installation cavity 12 is formed between the upper cover 2 and the lower cover 1 of the joint box, and an optical fiber splicing tray 7 is arranged in the installation cavity 12;

[0026] It also includes a support frame 4, the upper end and the bottom end of the support frame 4 are both provided with two semicircular card grooves 41, the support frame 4 is arranged between the ends of the joint box upper cover 2 and the joint box lower cover 1, the joint box upper cover 2 and the joint box lower cover 1 are provided with semicircular mounting grooves 5 corresponding to the semicircular card grooves 41 of the support frame 4, and the joint box upper cover 2 and the joint box lower cover 1 are provided with two semicircular optical cable access ports 9 on the end faces opposite to the ends of the other ends of the joint box upper cover 2 and the joint box lower cover 1, and the semicircular optical cable access ports 9 of the joint box upper cover 2 and the semicircular optical cable access ports 9 of the joint box lower cover 1 constitute two optical cable access holes;

[0027] One end of the mounting cavity 12 where the support frame 4 is disposed is provided with a plurality of fixing frames 11 , and the plurality of fixing frames 11 are distributed along an arc path. The optical cable junction box in this embodiment is suitable for the situation that part of the optical cable cores in the optical cable need to be connected through the junction box. Part of the optical cable cores in the optical cable are connected to other optical cables through the optical cable junction box, and the remaining optical cables continue to be used in the original optical cables. This optical cable needs to pass through the optical cable junction box and then pass out. In this embodiment, an optical fiber splicing tray 7 is arranged in the installation cavity 12, and the optical fiber splicing tray 7 is fixed on an iron plate. The iron plate is fixed in the lower cover 1 of the junction box by bolts, and then a support frame 4 is arranged between the upper cover 2 of the junction box and the lower cover 1 of the junction box. Two semicircular card grooves 41 are arranged on the top and bottom of the support frame 4. The two semicircular card grooves 41 on the same side correspond to the entry and exit of an optical cable. The semicircular card grooves 41 on the support frame 4 and the semicircular mounting grooves 5 of the upper cover 2 of the junction box and the lower cover 1 of the junction box constitute an optical cable access hole. After the optical cable is bent, the bent portion is located in the installation cavity 12, and then the two ends of the bent portion are respectively clamped in the support frame 4 In the two optical cable access holes on the same side, the optical fiber core in the optical cable is stripped out at the bending part and then connected to the optical cable core of the other optical cable. In order to fix the optical cable, a plurality of fixing frames 11 are correspondingly arranged in the installation cavity 12 on one side of the support frame 4. The plurality of fixing frames 11 are distributed in circular arcs to fix the bending part of the optical cable, especially to fix the apex of the bending part of the optical cable. In this way, the optical cable can be fixed by fixing this point to prevent the optical cable from slipping out of the optical cable access hole under the action of tension. Then, a fixing frame 11 is arranged at the optical cable access hole corresponding to the support frame 4 for auxiliary fixation, so that the optical cable maintains the size of the arc bending, so that the optical cable core in the optical cable is damaged by the small curvature of the bending part under the action of tension. In this embodiment, optical cable access holes are arranged at the upper and lower ends of the support frame 4 corresponding to the joint box upper cover 2 and the joint box lower cover 1, so that the access of two optical cables can be met, and it can be suitable for the situation that some optical cable cores need to be connected.

[0028] Furthermore, a sealing groove 6 is provided along the burr 3 of the lower cover 1 of the joint box, a sealing ring is provided in the sealing groove 6, and the upper cover 2 of the joint box and the lower cover 1 of the joint box are sealed by pressing the sealing ring. In this embodiment, the joint box is sealed by providing a sealing ring in the sealing groove 6 of the burr 3 to prevent water from entering the joint box.

[0029] Furthermore, an integrated optical cable fixing frame 8 is provided at the optical cable access hole corresponding to the end of the installation cavity 12 away from the support frame 4. In this embodiment, an integrated optical cable fixing frame 8 is provided at the end of the installation cavity 12 away from the support frame 4 for fixing another optical cable.

[0030] Furthermore, the two semicircular grooves 41 at the same end of the support frame 4 have an angle; correspondingly, the semicircular mounting grooves 5 of the upper cover 2 and the lower cover 1 of the joint box also have an angle. In this embodiment, the two semicircular grooves 41 at the same end of the support frame 4 are designed to have an angle. Specifically, the hole spacing of the two semicircular grooves 41 at the end of the support frame 4 located outside the joint box is greater than the hole spacing at the end located inside the joint box. In this way, the curvature of the bending part of the optical cable in the joint box is large, and it is not easy to cause the optical cable core to break, and it is convenient for the optical cable to bend. Due to the large diameter of the optical cable, it is not convenient to bend with a small curvature.

[0031] Furthermore, the fixing frame 11 includes two mounting posts 111 and two fixing clamps. The mounting post 111 is a stepped shaft, which includes a first section 1113, a second section 1112 and a third section 1111 which are arranged in sequence. The diameter of the first section 1113 is smaller than the diameter of the third section 1111. The first section 1113 and the second section 1112 are both provided with threads. The fixing clamp includes two semicircular fixing hoops 112. The two semicircular fixing hoops 112 are symmetrically arranged to form a circular fixing clamp. Both ends of the semicircular fixing hoops 112 are provided with mounting holes. The two fixing clamps are sleeved on the two mounting posts 111 by being arranged in the mounting holes. The two fixing clamps are respectively sleeved on the first section 1113 and the second section 1112. The first section 1113 and the second section 1112 are threadedly connected with fastening nuts 113 to fix the two fixing clamps on the first section 1113 and the second section 1112 respectively. In this embodiment, the two optical cables are distributed up and down when connected. Specifically, the bending parts of the two optical cables are distributed up and down, and the two optical cables need to be fixed at the same time. In this embodiment, the two optical cables are fixed at the same time by a fixing frame 11. Since the two optical cables are distributed at different heights, two mounting columns 111 are provided in this embodiment. The two mounting columns 111 are fixed on the iron plate of the lower cover 1 of the junction box. The mounting columns 111 are designed as stepped shafts, which are divided into a first section 1113, a second section 1112 and a third section 1111. The diameters of the first section 1113 to the third section 1111 increase successively, so that a transition between two adjacent sections is formed. Steps. In this embodiment, two fixing clips are respectively installed on the mounting column 111 through step limits, so that the two fixing clips have a height difference, so that two optical cables can be fixed. When in use, the optical cable located at the lower layer is fixed first, and then the optical cable located at the upper layer is fixed. The two fixing clips are respectively fixed on the mounting column 111 through fastening nuts 113. Sockets are provided at the corresponding mounting columns 111 in the junction box upper cover 2. When the junction box upper cover 2 and the junction box lower cover 1 are closed, the first section 1113 is inserted into the socket, so that the third section 1111 is connected to the iron plate, and the upper and lower ends of the mounting column 111 are fixed, so that the optical cable is fixed more stably.

[0032] Furthermore, the semicircular card slot 41, the semicircular installation slot 5 and the semicircular cable access port 9 are all provided with a pleated sealing rubber pad 10. In this embodiment, the semicircular card slot 41, the semicircular installation slot 5 and the semicircular cable access port 9 are provided with a pleated sealing rubber pad 10 to seal the optical cable.

[0033] Furthermore, fixing holes 43 are provided at both ends of the support frame 4, and the support frame 4 is fixed to the lower cover 1 of the joint box by threading the support frame 4 through the fixing holes 43 and the lower cover 1 of the joint box. When the support frame 4 in this embodiment is used, the optical cable access hole formed by the support frame 4 and the lower cover 1 of the joint box is preferentially used to connect the optical cable. The support frame 4 is fixed to the lower cover 1 of the joint box by bolts, and then the upper cover 2 of the joint box is connected to the middle part of the support frame 4 by bolts. When opening, the upper cover 2 of the joint box is opened first, and then the optical cable access hole between the support frame 4 and the lower cover 1 of the joint box can be used.

[0034] Furthermore, the support frame 4 is provided with sealing protrusions 42 at both ends, and the joint box upper cover 2 and the joint box lower cover 1 are provided with grooves corresponding to the sealing protrusions 42, and a sealing rubber ring is provided in the groove. The sealing protrusion 42 is placed in the groove and cooperates with the sealing rubber ring to make the support frame 4 seal with the joint box upper cover 2 and the joint box lower cover 1. In this embodiment, the sealing protrusion 42 of the support frame 4 is pressed on the sealing rubber ring to achieve sealing with the joint box upper cover 2 and the joint box lower cover 1.

[0035] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the above-mentioned technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. An optical cable splice box suitable for connecting part of the optical cable core. Features: The joint box comprises an upper cover (2) and a lower cover (1), wherein the edges of the upper cover (2) and the lower cover (1) are both provided with burrs (3), and the burrs (3) of the upper cover (2) and the lower cover (1) are connected together by bolts; An installation cavity (12) is formed between the upper cover (2) and the lower cover (1) of the joint box, and an optical fiber splicing tray (7) is arranged in the installation cavity (12); It also includes a support frame (4), the upper end and the lower end of the support frame (4) are both provided with two semicircular slots (41), the support frame (4) is arranged between the ends of the joint box upper cover (2) and the joint box lower cover (1), the joint box upper cover (2) and the joint box lower cover (1) are provided with semicircular installation grooves (5) corresponding to the semicircular slots (41) of the support frame (4), and the end surfaces opposite to the ends of the other ends of the joint box upper cover (2) and the joint box lower cover (1) are both provided with two semicircular optical cable access ports (9), the semicircular optical cable access ports (9) of the joint box upper cover (2) and the semicircular optical cable access ports (9) of the joint box lower cover (1) constitute two optical cable access holes; One end of the support frame (4) provided in the installation cavity (12) is provided with a plurality of fixing frames (11), and the plurality of fixing frames (11) are distributed along an arc path; The fixing frame (11) comprises two mounting posts (111) and two fixing clamps. The mounting post (111) is a stepped shaft, which comprises a first section (1113), a second section (1112) and a third section (1111) arranged in sequence. The diameter of the first section (1113) is smaller than the diameter of the third section (1111). Both the first section (1113) and the second section (1112) are provided with threads. The fixing clamp comprises two semicircular fixing hoops (112). The two semicircular fixing hoops are provided with threads. The hoops (112) are symmetrically arranged to form a circular fixing clamp, and mounting holes are arranged at both ends of the semicircular fixing hoop (112). The two fixing clamps are sleeved on the two mounting columns (111) by being arranged in the mounting holes. The two fixing clamps are sleeved on the first section (1113) and the second section (1112) respectively, and the first section (1113) and the second section (1112) are threadedly connected with fastening nuts (113) to fix the two fixing clamps on the first section (1113) and the second section (1112) respectively; The two semicircular slots (41) at the same end of the support frame (4) have an included angle; correspondingly, the semicircular mounting slots (5) of the joint box upper cover (2) and the joint box lower cover (1) also have an included angle, and the hole spacing of the two semicircular slots (41) at the end of the support frame (4) located outside the joint box is greater than the hole spacing at the end located inside the joint box.

2. An optical cable splice box suitable for connecting part of the optical cable cores according to claim 1, Features: A sealing groove (6) is provided on the upper edge of the burr (3) of the lower cover (1) of the joint box, a sealing ring is provided in the sealing groove (6), and the upper cover (2) and the lower cover (1) of the joint box are sealed by pressing the sealing ring.

3. An optical cable splice box suitable for connecting part of the optical cable cores according to claim 1, Features: An integrated optical cable fixing frame (8) is provided at the end of the installation cavity (12) away from the support frame (4) corresponding to the optical cable access hole.

4. An optical cable splice box suitable for connecting part of the optical cable cores according to claim 1, Features: The semicircular card slot (41), the semicircular installation slot (5) and the semicircular optical cable access port (9) are all provided with a pleated sealing rubber pad (10).

5. The optical cable splice box suitable for connecting part of the optical cable cores according to claim 1, Features: The support frame (4) is provided with fixing holes (43) at both ends, and the support frame (4) is fixed to the joint box lower cover (1) by means of bolts passing through the fixing holes (43) and being threadedly connected to the joint box lower cover (1).

6. An optical cable splice box suitable for connecting part of the optical cable cores according to claim 1, Features: The support frame (4) is provided with sealing protrusions (42) at the upper and lower ends, and the joint box upper cover (2) and the joint box lower cover (1) are provided with grooves corresponding to the sealing protrusions (42), and a sealing rubber ring is provided in the groove. The sealing protrusion (42) is placed in the groove and cooperates with the sealing rubber ring to seal the support frame (4) with the joint box upper cover (2) and the joint box lower cover (1), respectively.

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