CN110501793B - Optical cable joint box with good sealing effect - Google Patents
Optical cable joint box with good sealing effect Download PDFInfo
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- CN110501793B CN110501793B CN201910585782.2A CN201910585782A CN110501793B CN 110501793 B CN110501793 B CN 110501793B CN 201910585782 A CN201910585782 A CN 201910585782A CN 110501793 B CN110501793 B CN 110501793B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
- G02B6/44465—Seals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4442—Cap coupling boxes
- G02B6/4444—Seals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4446—Cable boxes, e.g. splicing boxes with two or more multi fibre cables
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an optical cable joint box with good sealing effect, and aims to provide an optical cable joint box with good sealing effect, which is convenient for optical cable connection operation and has good sealing effect. It includes box body down, go up the box body, optical cable entry and seal assembly, the optical cable entry is by setting up under the optical cable on the up end of box body under the entry with set up the optical cable on the lower terminal surface of last box body and enter the mouth and constitute, be equipped with the bottom seal circle mounting groove on the up end of box body down, be equipped with the top seal circle mounting groove on the lower terminal surface of last box body, seal assembly includes sealing member and lower sealing member, lower sealing member is including setting up sealed piece under the optical cable in the intraoral optical cable and setting up the bottom seal strip in bottom seal circle mounting groove, bottom seal strip is connected as an organic wholely with the optical cable bottom seal piece, go up the sealing member including setting up sealed piece on the intraoral optical cable on the optical cable and set up the top seal strip in last sealing ring.
Description
Technical Field
The invention relates to an optical cable joint box, in particular to an optical cable joint box with a good sealing effect.
Background
The optical cable joint box connects two or more optical cables together, has a connection part for protecting components, is free from the influence of the external environment, keeps a stable and reliable operation state, is necessary to be adopted in the engineering construction of optical cable lines, is one of very important equipment, and directly influences the quality of the optical cable lines and the service life of the optical cable lines. Humidity is an important environmental physical parameter in production and life, directly influences the characteristic function of engineering materials and the safety guarantee of important materials, and the humidity in the optical cable joint box directly influences the quality of optical cable lines in the optical cable joint box and the service life of the optical cable lines, so that the optical cable joint box has higher requirements on sealing performance. The existing optical cable joint box generally comprises a lower box body, an upper box body and a sealing element arranged between the lower box body and the upper box body, wherein optical cable inlets are formed in two ends of the optical cable joint box, each optical cable inlet consists of an optical cable lower inlet arranged on the upper end face of the lower box body and an optical cable upper inlet arranged on the lower end face of the upper box body, and each optical cable inlet is provided with an optical cable sealing sleeve for sealing an optical cable. Because the setting of optical cable entry, the sealing strip is cut off by the optical cable seal cover, and the sealing member will constitute by multistage sealing strip (the sealing strip can't form an end to end connection's annular sealing strip), and the assembly workman has the clearance easily between sealing strip and the optical cable seal cover when the actual installation, influences the sealing performance between box body and the last box body down for external moisture and rainwater get into the optical cable splice box easily, influence the quality of optical cable circuit and the life of optical cable circuit.
On the other hand, for the optical cable joint box applied outdoors, because the sealing performance of the optical cable joint box is good, the optical cable joint box is affected by day and night temperature differences, especially the day and night temperature differences in summer and winter are large, the air pressure fluctuation in the optical cable joint box is large, and when the temperature is high in day, the air pressure in the optical cable joint box is high (the air pressure in the optical cable joint box is higher than the external atmospheric pressure), so that the sealing performance of the optical cable joint box is further affected, and even the connection structure in the optical cable joint box can be affected.
Disclosure of Invention
The invention aims to provide an optical cable joint box which is good in sealing effect, convenient in optical cable connection operation and good in sealing effect.
The technical scheme of the invention is as follows:
an optical cable joint box with good sealing effect comprises a lower box body, an upper box body, an optical cable inlet and a sealing assembly arranged between the lower box body and the upper box body, wherein the optical cable inlet consists of an optical cable lower inlet arranged on the upper end face of the lower box body and an optical cable upper inlet arranged on the lower end face of the upper box body, a lower sealing ring mounting groove is arranged on the upper end face of the lower box body, the edge of the upper end face of the lower box body along which the lower sealing ring mounting groove extends, is communicated with the optical cable lower inlet, an upper sealing ring mounting groove is arranged on the lower end face of the upper box body, the edge of the lower end face of the upper box body along which the upper sealing ring mounting groove extends, is communicated with the optical cable upper inlet, the sealing assembly comprises an upper sealing piece and a lower sealing piece, the lower sealing piece comprises an optical cable lower sealing block arranged in the optical cable lower inlet and a lower sealing strip, the lower sealing strip is connected with the optical cable lower sealing block into a whole, and the upper surface of the optical cable lower sealing block is provided with a lower sealing through groove with a semicircular cross section; the upper sealing element comprises an optical cable upper sealing block arranged in an optical cable upper inlet and an upper sealing strip arranged in an upper sealing ring mounting groove, the upper sealing strip and the optical cable upper sealing block are connected into a whole, and an upper sealing through groove with a semicircular cross section is arranged on the lower surface of the optical cable upper sealing block; the lower box body passes through bolted connection with the last box body, the lower sealing strip closely laminates with the upper sealing strip, and the cable is sealed the piece and is closely laminated with the optical cable on to make box body and last box body under the sealing assembly sealing connection, the lower sealing leads to the groove and leads to the groove with the upper sealing and form the optical cable via hole jointly.
Compared with the prior art that a gap is easy to exist between a sealing strip and an optical cable sealing sleeve of the optical cable joint box, which affects the sealing performance between the lower box body and the upper box body, so that external moisture and rainwater easily enter the optical cable joint box, which affects the quality of an optical cable circuit and the service life of the optical cable circuit, in the scheme, the lower sealing strip is connected with the optical cable lower sealing block into a whole, and the upper sealing strip is connected with the optical cable upper sealing block into a whole, so that no gap exists between the lower sealing strip and the optical cable lower sealing block, and no gap exists between the upper sealing strip and the optical cable upper sealing block, therefore, the lower box body is connected with the upper box body through bolts, so that the lower sealing strip is tightly attached with the upper sealing strip, the optical cable lower sealing block is tightly attached with the optical cable upper sealing block, the sealing assembly is reliably connected with the lower box, the sealing effect is good. On the other hand, the lower sealing through groove and the upper sealing through groove form an optical cable through hole together, so that when two or more optical cables are connected together in the optical cable joint box, the two or more optical cables can be directly connected together, and then the optical cables are placed in the corresponding lower sealing through grooves; then, the upper box body is covered, the optical cable is arranged in the corresponding upper sealing through groove, and then the lower box body is connected with the upper box body through the bolt, so that the optical cable connecting box has the characteristic of convenience in operation.
Preferably, the inner side surface of the lower sealing through groove is provided with a plurality of semicircular lower convex ribs which are sequentially distributed along the length direction of the lower sealing through groove.
Preferably, the inner side surface of the upper sealed through groove is provided with a plurality of semicircular upper convex ribs, and the upper convex ribs are distributed in sequence along the length direction of the upper sealed through groove.
Preferably, the lower sealing strip is integrally formed with the cable lower sealing block.
Preferably, the upper sealing strip is integrally formed with the cable upper sealing block.
Preferably, the cable connector box further comprises a pressure self-adjusting structure, the pressure self-adjusting structure comprises a vertical cylinder body arranged on the lower box body, a limiting block arranged on the upper portion of the inner side face of the vertical cylinder body, a supporting piece arranged in the vertical cylinder body and located below the limiting block, and a sliding piston arranged in the vertical cylinder body in a sliding mode, the upper end of the vertical cylinder body is communicated with an inner cavity of the cable connector box, the lower end of the vertical cylinder body is communicated with the outer side of the cable connector box, the sliding piston is located between the limiting block and the supporting piece, and a reset spring is further arranged between the. Therefore, when the external environment temperature is high and the air pressure in the optical cable joint box is increased, the air pressure in the optical cable joint box overcomes the elasticity of the reset spring, so that the sliding piston moves downwards along the vertical cylinder body, and the air pressure in the optical cable joint box is reduced by increasing the volume in the optical cable joint box; when the external environment temperature is reduced and the air pressure in the optical cable joint box is reduced, the sliding piston moves upwards under the action of the reset spring, so that the air pressure in the optical cable joint box is automatically balanced, and the overlarge air pressure in the optical cable joint box is avoided.
Preferably, the alarm device further comprises an alarm device, a sliding column is further arranged in the vertical cylinder body, the sliding column is located between the sliding piston and a support piece, a pressure sensor is arranged on one side, facing the sliding column, of the support piece, and the return spring is located between the sliding piston and the sliding column so that the sliding column is pressed against the pressure sensor; and when the fluctuation range of the pressure value detected by the pressure sensor is smaller than a set value in a set time period, the alarm device gives an alarm. Under the influence of day and night temperature difference, under the condition that the sealing performance of the optical cable joint box is good, the air pressure in the optical cable joint box is high in the day, the sliding piston overcomes the elasticity of the return spring and moves downwards along the vertical cylinder body at the moment, the air pressure in the optical cable joint box is low at night, the sliding piston moves upwards under the action of the return spring at the moment, namely, under the influence of day and night temperature difference, the sliding piston moves upwards and downwards along the vertical cylinder body, so that the pressure of the return spring acting on the pressure sensor through the sliding column changes along with the pressure, when the sliding piston moves downwards along the vertical cylinder body, the pressure of the return spring acting on the pressure sensor through the sliding column is increased, and when the sliding piston moves upwards along the vertical cylinder body, the pressure of the return spring acting on the pressure sensor through the sliding column; if the optical cable joint box has poor sealing in the long-term use process, when the air pressure in the optical cable joint box rises, the air in the optical cable joint box is discharged through the poor sealing part, and when the air pressure in the optical cable joint box is reduced, the external air enters the optical cable joint box through the poor sealing part, so that if the optical cable joint box has poor sealing in the long-term use process, the sliding piston cannot move up and down along the vertical cylinder body; by utilizing the characteristic, in the scheme, if the fluctuation range of the detected pressure value of the pressure sensor is smaller than the set value in the set time period, the sealing failure of the optical cable joint box in the long-term use process is shown, and then the alarm device gives an alarm to remind a maintainer of overhauling.
Preferably, the lower end of the vertical cylinder body is provided with an opening, the supporting piece is arranged in the lower end opening of the vertical cylinder body, the supporting piece and the vertical cylinder body are detachably connected into a whole through threads or buckles, and the supporting piece is provided with a first vent hole penetrating through the upper end face and the lower end face of the supporting piece.
Preferably, the sliding column is provided with a second vent hole penetrating through the upper and lower end faces of the sliding column.
The invention has the beneficial effects that:
first, not only sealed effectual, optical cable connects convenient operation moreover.
And secondly, the air pressure in the optical cable joint box can be automatically balanced, and the overlarge air pressure in the optical cable joint box is avoided.
Drawings
Fig. 1 is a schematic cross-sectional view of a cable closure according to the present invention with a good sealing effect.
Fig. 2 is a top view of the lower case of the present invention.
Fig. 3 is a top view of the lower seal of the present invention mounted to the lower cartridge body.
Fig. 4 is a partial enlarged view of a portion a of fig. 1.
In the figure:
a lower box body 1;
an upper box body 2;
the optical cable sealing device comprises a sealing component 3, an upper sealing element 3.1, an optical cable upper sealing block 3.11, an upper sealing strip 3.12, a lower sealing element 3.2, an optical cable lower sealing block 3.21 and a lower sealing strip 3.22;
the optical cable passes through the hole 4, the upper sealed through groove 4.1, the lower sealed through groove 4.2 and the lower convex rib 4.21;
a lower seal ring mounting groove 5;
a lower optical cable inlet 6.1;
the device comprises a pressure self-adjusting structure 7, a vertical cylinder body 7.1, a limiting block 7.2, a supporting piece 7.3, a sliding piston 7.4 and a return spring 7.5;
controller 8.0, sliding column 8.1, pressure sensor 8.2.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, 2 and 3, the optical cable joint box with good sealing effect comprises a lower box body 1, an upper box body 2, an optical cable inlet and a sealing component 3 arranged between the lower box body and the upper box body. In this embodiment, two ends of the optical cable joint box are respectively provided with two optical cable inlets. The optical cable inlet is composed of an optical cable lower inlet 6.1 arranged on the upper end face of the lower box body and an optical cable upper inlet arranged on the lower end face of the upper box body. And a lower sealing ring mounting groove 5 is arranged on the upper end face of the lower box body, the edge of the upper end face of the lower box body along which the lower sealing ring mounting groove extends, and the lower sealing ring mounting groove is communicated with the lower inlet of the optical cable. An upper sealing ring mounting groove is arranged on the lower end face of the upper box body, the edge of the lower end face of the upper box body along the upper sealing ring mounting groove extends, and the upper sealing ring mounting groove is communicated with the upper inlet of the optical cable.
The seal assembly 3 comprises an upper seal 3.1 and a lower seal 3.2. The upper sealing element 3.1 comprises an optical cable upper sealing block 3.11 arranged in an inlet on the optical cable and an upper sealing strip 3.12 arranged in an upper sealing ring mounting groove, the optical cable upper sealing block and the optical cable upper inlet are in one-to-one correspondence, the upper sealing strip and the optical cable upper sealing block are connected into a whole, and an upper sealing through groove 4.1 with a semicircular cross section is arranged on the lower surface of the optical cable upper sealing block. The lower sealing element 3.2 comprises an optical cable lower sealing block 3.21 arranged in the optical cable lower inlet and a lower sealing strip 3.22 arranged in the lower sealing ring mounting groove, the optical cable lower sealing block corresponds to the optical cable lower inlet one by one, the lower sealing strip and the optical cable lower sealing block are connected into a whole, and a lower sealing through groove 4.2 with a semicircular cross section is formed in the upper surface of the optical cable lower sealing block. The lower box body is connected with the upper box body through a bolt, so that the lower sealing strip is tightly attached to the upper sealing strip, the cable lower sealing block is tightly attached to the optical cable upper sealing block, and the sealing assembly is connected with the lower box body and the upper box body in a sealing mode. The lower sealing through grooves correspond to the upper sealing through grooves one by one, and the lower sealing through grooves and the corresponding upper sealing through grooves form optical cable through holes 4 together.
Compared with the prior art that a gap is easy to exist between a sealing strip and an optical cable sealing sleeve of the optical cable joint box, which affects the sealing performance between the lower box body and the upper box body, so that external moisture and rainwater easily enter the optical cable joint box, which affects the quality of an optical cable circuit and the service life of the optical cable circuit, in the scheme, the lower sealing strip is connected with the optical cable lower sealing block into a whole, and the upper sealing strip is connected with the optical cable upper sealing block into a whole, so that no gap exists between the lower sealing strip and the optical cable lower sealing block, and no gap exists between the upper sealing strip and the optical cable upper sealing block, therefore, the lower box body is connected with the upper box body through bolts, so that the lower sealing strip is tightly attached with the upper sealing strip, the optical cable lower sealing block is tightly attached with the optical cable upper sealing block, the sealing assembly is reliably connected with the lower box, the sealing effect is good.
On the other hand, the lower sealing through groove and the upper sealing through groove form an optical cable through hole together, so that when two or more optical cables are connected together in the optical cable joint box, the two or more optical cables can be directly connected together, and then the optical cables are placed in the corresponding lower sealing through grooves; then, the upper box body is covered, the optical cable is arranged in the corresponding upper sealing through groove, and then the lower box body is connected with the upper box body through the bolt, so that the optical cable connecting box has the characteristic of convenience in operation.
Furthermore, a plurality of semicircular lower convex ribs 4.21 are arranged on the inner side surface of the lower sealing through groove 4.2, and the lower convex ribs are distributed in sequence along the length direction of the lower sealing through groove. The inner side surface of the upper sealed through groove is provided with a plurality of semicircular upper convex ribs, and the upper convex ribs are distributed in sequence along the length direction of the upper sealed through groove. The lower convex ribs correspond to the upper convex ribs one to one.
Further, the lower sealing strip and the optical cable lower sealing block are integrally formed. The upper sealing strip and the optical cable upper sealing block are integrally formed.
The second embodiment is as follows: the remaining structure of this embodiment refers to the first embodiment, and the difference is that:
as shown in fig. 1 and 4, the optical cable joint box with good sealing effect further comprises a pressure self-adjusting structure 7. The pressure self-adjusting structure comprises a vertical cylinder body 7.1 arranged on the lower box body 1, a limiting block 7.2 arranged on the upper portion of the inner side face of the vertical cylinder body, a supporting piece 7.3 arranged in the vertical cylinder body and located below the limiting block, and a sliding piston 7.4 arranged in the vertical cylinder body in a sliding mode. The upper end of the vertical cylinder body is communicated with the inner cavity of the optical cable joint box, the lower end of the vertical cylinder body is communicated with the outer side of the optical cable joint box, specifically, the upper end of the vertical cylinder body is open, the upper end of the vertical cylinder body is communicated with the inner cavity of the optical cable joint box, the lower end of the vertical cylinder body is open, and the lower end of the vertical cylinder body is communicated with the outer side of the optical cable joint box. The sliding piston is positioned between the limiting block and the supporting piece. A return spring 7.5 is also arranged between the sliding piston and the support. The sliding piston is propped against the limiting block under the action of the return spring.
Therefore, when the external environment temperature is high and the air pressure in the optical cable joint box is increased, the air pressure in the optical cable joint box overcomes the elasticity of the reset spring, so that the sliding piston moves downwards along the vertical cylinder body, and the air pressure in the optical cable joint box is reduced by increasing the volume in the optical cable joint box; when the external environment temperature is reduced and the air pressure in the optical cable joint box is reduced, the sliding piston moves upwards under the action of the reset spring, so that the air pressure in the optical cable joint box is automatically balanced, and the overlarge air pressure in the optical cable joint box is avoided.
Further, support piece 7.3 sets up in the lower extreme opening of vertical cylinder body, and support piece and vertical cylinder body pass through screw thread or buckle detachable and are connected as an organic wholely, are equipped with the first air vent that runs through support piece up-and-down terminal surface on the support piece.
The third concrete embodiment: the remaining structure of this embodiment refers to the second embodiment, and the difference is that:
as shown in fig. 4, the optical cable joint box with good sealing effect further comprises a controller 8.0 and an alarm device. The alarm device is an alarm. The controller sets up in the outside of optical cable joint box, and the controller is equipped with rain-proof cover outward. The alarm is arranged outside the optical cable joint box or in the control room, and the alarm devices are respectively and electrically connected with the controller. A sliding column 8.1 is further arranged in the vertical cylinder body, the sliding column is positioned between the sliding piston and the supporting piece, a pressure sensor 8.2 is arranged on one side, facing the sliding column, of the supporting piece, and a return spring 7.5 is positioned between the sliding piston and the sliding column so that the sliding column is pressed against the pressure sensor;
the alarm means issues an alarm when the fluctuation range of the detected pressure value of the pressure sensor is smaller than a set value for a set period of time, for example, 24 hours or 36 hours or 48 hours, for example, the fluctuation range of the detected pressure value of the pressure sensor is smaller than 0.5 newton or smaller than 1 newton or smaller than 2 newtons; specifically, in any continuous 24 hours or 36 hours or 48 hours, the fluctuation range of the pressure value detected by the pressure sensor is less than 0.5 newton or less than 1 newton or less than 2 newtons, and the controller controls the alarm device to give an alarm to remind a maintainer of overhauling.
Under the influence of day and night temperature difference, under the condition that the sealing performance of the optical cable joint box is good, the air pressure in the optical cable joint box is high in the day, the sliding piston overcomes the elasticity of the return spring and moves downwards along the vertical cylinder body at the moment, the air pressure in the optical cable joint box is low at night, the sliding piston moves upwards under the action of the return spring at the moment, namely, under the influence of day and night temperature difference, the sliding piston moves upwards and downwards along the vertical cylinder body, so that the pressure of the return spring acting on the pressure sensor through the sliding column changes along with the pressure, when the sliding piston moves downwards along the vertical cylinder body, the pressure of the return spring acting on the pressure sensor through the sliding column is increased, and when the sliding piston moves upwards along the vertical cylinder body, the pressure of the return spring acting on the pressure sensor through the sliding column; if the optical cable joint box has poor sealing in the long-term use process, when the air pressure in the optical cable joint box rises, the air in the optical cable joint box is discharged through the poor sealing part, and when the air pressure in the optical cable joint box is reduced, the external air enters the optical cable joint box through the poor sealing part, so that if the optical cable joint box has poor sealing in the long-term use process, the sliding piston cannot move up and down along the vertical cylinder body; by utilizing the characteristic, in the scheme, if the fluctuation range of the detected pressure value of the pressure sensor is smaller than the set value in the set time period, the sealing failure of the optical cable joint box in the long-term use process is shown, and then the alarm device gives an alarm to remind a maintainer of overhauling.
Furthermore, a second vent hole penetrating through the upper end face and the lower end face of the sliding column is formed in the sliding column.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. An optical cable joint box with good sealing effect comprises a lower box body, an upper box body, an optical cable inlet and a sealing assembly arranged between the lower box body and the upper box body, and is characterized by further comprising a pressure self-adjusting structure, wherein the optical cable inlet consists of an optical cable lower inlet arranged on the upper end surface of the lower box body and an optical cable upper inlet arranged on the lower end surface of the upper box body, a lower sealing ring mounting groove is arranged on the upper end surface of the lower box body, the lower sealing ring mounting groove extends along the edge of the upper end surface of the lower box body, the lower sealing ring mounting groove is communicated with the optical cable lower inlet, an upper sealing ring mounting groove is arranged on the lower end surface of the upper box body, the edge of the lower end surface of the upper box body along the upper sealing ring mounting groove extends, and,
the sealing assembly comprises an upper sealing element and a lower sealing element, the lower sealing element comprises an optical cable lower sealing block arranged in an optical cable lower inlet and a lower sealing strip arranged in a lower sealing ring mounting groove, the lower sealing strip and the optical cable lower sealing block are connected into a whole, and a lower sealing through groove with a semicircular cross section is arranged on the upper surface of the optical cable lower sealing block; the upper sealing element comprises an optical cable upper sealing block arranged in an optical cable upper inlet and an upper sealing strip arranged in an upper sealing ring mounting groove, the upper sealing strip and the optical cable upper sealing block are connected into a whole, and an upper sealing through groove with a semicircular cross section is arranged on the lower surface of the optical cable upper sealing block;
the lower box body is connected with the upper box body through a bolt, the lower sealing strip is tightly attached to the upper sealing strip, the lower cable sealing block is tightly attached to the upper optical cable sealing block, so that the sealing assembly is hermetically connected with the lower box body and the upper box body, and the lower sealing through groove and the upper sealing through groove form an optical cable through hole together;
the upper sealing strip and the optical cable upper sealing block are integrally formed;
the pressure self-adjusting structure comprises a vertical cylinder body arranged on the lower box body, a limiting block arranged on the upper portion of the inner side face of the vertical cylinder body, a supporting piece arranged in the vertical cylinder body and located below the limiting block, and a sliding piston arranged in the vertical cylinder body in a sliding mode, wherein the upper end of the vertical cylinder body is communicated with the inner cavity of the optical cable joint box, the lower end of the vertical cylinder body is communicated with the outer side of the optical cable joint box, the sliding piston is located between the limiting block and the supporting piece, and a reset spring is further arranged between the sliding piston and.
2. The optical cable joint box with good sealing effect as claimed in claim 1, wherein a plurality of semicircular lower ribs are arranged on the inner side surface of the lower sealing through groove, and the lower ribs are distributed along the length direction of the lower sealing through groove in sequence.
3. The optical cable joint box with good sealing effect as claimed in claim 2, wherein a plurality of semicircular upper convex ribs are arranged on the inner side surface of the upper sealing through groove, and the upper convex ribs are sequentially distributed along the length direction of the upper sealing through groove.
4. An optical cable splice closure with improved sealing as claimed in claim 1, 2 or 3, in which the lower sealing strip is integrally formed with the lower sealing block.
5. The optical cable joint box with good sealing effect as claimed in claim 1, further comprising an alarm device, wherein a sliding column is further arranged in the vertical cylinder body, the sliding column is located between the sliding piston and a support member, a pressure sensor is arranged on one side of the support member facing the sliding column, and the return spring is located between the sliding piston and the sliding column so as to enable the sliding column to be pressed against the pressure sensor;
and when the fluctuation range of the pressure value detected by the pressure sensor is smaller than a set value in a set time period, the alarm device gives an alarm.
6. The optical cable joint box with good sealing effect as claimed in claim 1, wherein the lower end of the vertical cylinder body is open, the supporting member is disposed in the lower end opening of the vertical cylinder body, the supporting member and the vertical cylinder body are detachably connected into a whole through a screw thread or a buckle, and the supporting member is provided with a first vent hole penetrating through the upper end face and the lower end face of the supporting member.
7. An optical cable splice closure with improved sealing as claimed in claim 5, in which said sliding post is provided with second vent holes extending through the upper and lower end faces of the sliding post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910585782.2A CN110501793B (en) | 2019-07-01 | 2019-07-01 | Optical cable joint box with good sealing effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910585782.2A CN110501793B (en) | 2019-07-01 | 2019-07-01 | Optical cable joint box with good sealing effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110501793A CN110501793A (en) | 2019-11-26 |
| CN110501793B true CN110501793B (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910585782.2A Active CN110501793B (en) | 2019-07-01 | 2019-07-01 | Optical cable joint box with good sealing effect |
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| CN (1) | CN110501793B (en) |
Citations (13)
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| CN110501793A (en) | 2019-11-26 |
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