CN108107520B - Optical cable terminal box with observation window - Google Patents
Optical cable terminal box with observation window Download PDFInfo
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- CN108107520B CN108107520B CN201711350338.XA CN201711350338A CN108107520B CN 108107520 B CN108107520 B CN 108107520B CN 201711350338 A CN201711350338 A CN 201711350338A CN 108107520 B CN108107520 B CN 108107520B
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- optical cable
- terminal box
- cable terminal
- observation window
- elastic sealing
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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)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention provides an optical cable terminal box with an observation window, wherein an observation hole is formed in an upper cover of the optical cable terminal box, an opening is also formed in the position of an elastic sealing element corresponding to the observation hole, whether the wiring condition inside the optical cable terminal box is normal or not can be conveniently observed under the condition that the optical cable terminal box is not opened, and the optical cable terminal box has higher strength, good anti-vibration performance, good sealing and waterproof performance and can resist corrosion and aging. The invention also provides an integral optical cable terminal box with an integrated structure, wherein the internal wiring installation is carried out through the reserved observation window opening, the sealing of the observation window opening can be realized through the telescopic jacking piece after the installation is finished, the use of the hole and the threaded connecting piece on the structural piece is avoided, the failure problem caused by threaded connection can be prevented while the effective sealing is formed, and the transparent piece can be removed to open the observation window opening for maintenance operation when the interior of the optical cable terminal box needs maintenance.
Description
Technical Field
The invention relates to the field of optical cable terminal boxes, in particular to an optical cable terminal box with an observation window.
Background
The optical cable terminal box is an auxiliary device for terminal wiring in an optical fiber transmission communication network, is suitable for direct and branch connection of indoor/outdoor optical cables, and plays a role in protecting an optical fiber joint. In the developed communication network system, optical communication plays an important role, and with the strong demand of the communication market, the construction of FTTH communication facilities is performed on a large scale in recent years in China, and optical cable terminal boxes are used more and more abundantly. The door lock and the key of the optical cable terminal box produced by each manufacturer are different, so that the optical cable terminal box is frequently opened when workers construct and maintain, and management is not convenient. In order to avoid the influence of external factors such as light, water, dust, insects, etc. on the optical cable terminal box and the optical cable terminal in the box, the optical cable terminal box needs to have high strength, good vibration resistance, good sealing and water resistance, and can resist corrosion and aging. Present optical cable terminal box is mostly split type structure, need be installed together with lid and box body part preparation again, easily takes place to leak at a plurality of positions to in case need maintain optical cable terminal box when, need open optical cable terminal box and just can operate.
Disclosure of Invention
The invention aims to optimize the structure of the existing optical cable terminal box and provide an optical cable terminal box with an observation window, wherein the optical cable terminal box has good sealing performance and good disassembly and replacement operability.
The purpose of the invention is realized by the following technical scheme: an optical cable terminal box with an observation window comprises an optical cable terminal box upper cover, an elastic sealing element, a transparent element, a bolt and a nut, wherein the elastic sealing element and the transparent element are fixed on the inner side of the optical cable terminal box upper cover by the bolt and the nut, the optical cable terminal box upper cover is provided with an observation hole, and an opening is reserved at the position of the elastic sealing element corresponding to the observation hole.
Preferably, the elastic sealing element is made of fluororubber. Preferably, the elastic sealing element is provided with a U-shaped outer edge boss at the opening position, so that the edge of the observation hole of the upper cover of the optical cable terminal box is matched and clamped in the U-shaped opening, and the elastic sealing element and the edge of the observation hole form sealing fit.
Preferably, set up the sealed lid of resistant time shading with optical cable terminal box upper cover observation hole shape size looks adaptation, sealed lid can block to establish in the observation hole trompil of being wrapped up by elastic sealing element, can cover sealed lid stopper in observation hole trompil when not observing the operation for provide additional waterproof barrier, and can shelter from the ultraviolet ray and prevent that the observation hole transparency is ageing, prevent that external force collision observation hole transparency from causing the damage.
Preferably, a disassembly auxiliary part is arranged below the nuts for fixing the elastic sealing part, the upper cover of the optical cable terminal box and the transparent part, the auxiliary part comprises an inverted T-shaped column, a spring is sleeved on the column body, a ball is embedded at a cap at the lower end of the column body, and the upper end spring abuts against the rear end of the nut. Dismantle the effect that auxiliary member can play the convenience elastic sealing spare on the one hand and change, set aside the handle hole, can unload partial effort under the effect of spring when transparent piece receives external force to strike on the one hand, play good anti-vibration effect.
The utility model provides an optical cable terminal box with observation window, includes optical cable terminal box body, flexible top piece, side cap and transparency, and optical cable terminal box is integral box body through integrated into one piece, and integral box body only leaves the observation window and designs the side for the open mode on the upper surface.
Preferably, the optical cable terminal box is matched with the telescopic jacking member to realize the sealing of the window of the observation window, the telescopic jacking member jacks the lower surface of the transparent member, so that the transparent member is tightly attached to the lower surface of the window of the observation window, the telescopic jacking member is of a three-section structure and comprises a telescopic section, a fixed connecting section and a bottom section, wherein the upper surface of the bottom section is fixedly connected with the fixed connecting section, the fixed connecting section is of a hollow structure, a spring is arranged in the cavity of the hollow structure, the upper end of the fixed connecting section is movably connected with the telescopic section, the lower end of the telescopic section is under the action of the spring in the cavity of the hollow structure, the telescopic section can be compressed into the cavity of the fixed connecting section under the action of the external force, the telescopic section can be pushed out from the cavity of the hollow structure under the action of the spring in the fixed connecting section after the external force is removed, and the uppermost end, the upper surface is the hemisphere face, and flexible section is "ten" font structure, can press from both sides the lug and the base plate section that transversely stretch out on the flexible section in order to compress flexible tight section in top through the instrument when installation.
Preferably, the lower surface of the transparent part is provided with an annular groove, the inner surface of the groove is matched with the shape of a hemispherical surface at the upper end of the telescopic jacking part, the depth of the annular groove at the mounting position corresponding to the telescopic jacking part is deeper, and the upper surface of the transparent part is surrounded and bonded with a circle of elastic sealing element through weather-resistant organic silica gel.
Preferably, the shape of the inner surface of the side cover is matched with the shape of the side opening of the optical cable terminal box so as to ensure that the side cover can be tightly covered on the side opening of the optical cable terminal box through interference fit, the side cover is prepared through a secondary injection molding process, an engineering plastic shell is firstly subjected to one-time injection molding, then a layer of elastomer material is subjected to secondary injection molding on the inner surface of the molded engineering plastic shell, and therefore when the side cover is covered on the side opening, the sealing effect of the covering position of the side cover can be ensured.
Preferably, a weather-resistant, light-blocking, sealing cover is provided over the cable head to provide an additional water-resistant barrier and to block ultraviolet light.
The invention has the following advantages:
1. the optical cable terminal box with the observation window can reduce the maintenance workload of the optical cable terminal box, does not need to carry different types of keys, does not need to open and close the optical cable terminal box, and can observe whether the wiring condition inside the optical cable terminal box is normal or not and whether internal parts are damaged or not and the water seepage in the box body is abnormal or not by directly passing through the observation window.
2. The weather-proof shading sealing cover and the U-shaped opening fluororubber elastic sealing element can effectively improve the waterproofness, the weather resistance, the impact shock resistance and the strength performance of the optical cable terminal box, reduce the possibility of the optical cable terminal box breaking down under severe environmental conditions, and prolong the service life of the optical cable terminal box.
3. The installation position of the transparent part is a position of the optical cable terminal box which is easily affected by external force, the arrangement of the disassembly auxiliary part can play a good anti-vibration role on one hand, on the other hand, the disassembly and the replacement of the parts can be conveniently carried out when the sealing element needs to be replaced, and on the other hand, the operation hole can be reserved by opening the transparent part when the optical cable terminal box needs to carry out internal operation, and the optical cable terminal box does not need to be integrally disassembled;
4. the invention provides an integral optical cable terminal box with an integrated structure, which is characterized in that internal wiring installation is carried out through a reserved observation window opening, and sealing of the observation window opening is realized through a telescopic jacking piece after installation is finished, so that effective sealing of the opening can be realized, and the observation window opening can be opened for maintenance operation by removing a transparent piece when maintenance is needed in the optical cable terminal box; in addition, when the transparent part and the optical cable terminal box are assembled together through threaded connection, the optical cable terminal box is required to be designed into a split structure to complete installation, the threaded connecting part is easily corroded when exposed to the external environment for a long time and is difficult to unscrew, and in order to disassemble the transparent part during maintenance, the threaded connecting part needs to be unscrewed repeatedly, and openings in the optical cable terminal box and the transparent part deform to be difficult to form effective connection and sealing.
Drawings
Fig. 1 is a front view of the structure of the present invention.
FIG. 2 is a sectional view taken along line A-A in example 1 of the present invention.
Fig. 3 is an enlarged view of a part I of the structure in embodiment 1 of the present invention.
Fig. 4 is a partial front view of the upper cover of the cable head.
Fig. 5 is a front view of an elastomeric seal in example 1 of the present invention.
Fig. 6 is a front view of the transparent member.
FIG. 7 is a sectional view taken along line A-A in example 2 of the present invention.
Fig. 8 is a front view of an elastomeric seal in example 2 of the present invention.
Fig. 9 is a schematic view of the disassembly aid.
FIG. 10 is a front view of the structure of the opening of the observation window in example 3.
Fig. 11 is a schematic side opening view of the optical cable terminal box in embodiment 3.
Fig. 12 is a schematic structural view of the optical cable terminal box in embodiment 3 after the upper cover is sleeved on the side surface.
Fig. 13 is a schematic view of the structure of the telescopic ceiling member in embodiment 3.
Fig. 14 is a schematic view of the construction of the cable head according to example 3 in which the retractable jacking members are pushed against the transparent member.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
Example 1
As shown in fig. 1, 2 and 3, a cable head with an observation window comprises: the cable terminal box comprises a nut (1), a bolt (2), an optical cable terminal box upper cover (3), an elastic sealing element (4) and a transparent element (5). The upper cover of the optical cable terminal box is provided with an observation hole (6), and an opening is also reserved at the position of the elastic sealing element corresponding to the observation hole.
An elastic sealing member (4) is arranged between an optical cable terminal box upper cover (3) and a transparent member (5) and is fixed by a bolt (2) and a nut (1).
Maintainer knows, looks over optical cable terminal box internal working environment through observation hole (6), can observe whether the optical cable terminal box is inside to walk the line condition normal to and whether have abnormalities such as inner part damage, box body infiltration.
Example 2
A cable head with a viewing window, comprising: the optical cable terminal box comprises an inner nut (1), a bolt (2), an outer nut (7), an optical cable terminal box upper cover (3), an elastic sealing element (4) and a transparent element (5). The upper cover of the optical cable terminal box is provided with an observation hole (6), and an opening is also reserved at the position of the elastic sealing element corresponding to the observation hole.
An elastic sealing element (4) is arranged between an optical cable terminal box upper cover (3) and a transparent element (5) and is fixed by a bolt (2), an inner nut (1) and an outer nut (7).
The elastic sealing element (4) is made of fluororubber, and a U-shaped outer edge boss is arranged at the opening position of the elastic sealing element, so that the edge of the observation hole of the upper cover of the optical cable terminal box is clamped in the U-shaped opening in a matching manner, and the elastic sealing element and the edge of the observation hole form sealing matching.
Set up and observe sealed lid (8) of resistant time shading of hole shape size looks adaptation with optical cable terminal box upper cover, sealed lid can block to be established in the observation hole trompil of being wrapped up by elastic sealing element, can cover sealed lid stopper when not observing the operation in observing the hole trompil for provide additional waterproof barrier, and can shelter from the ultraviolet ray and prevent that the observation hole transparency is ageing, prevent that external force collision observation hole transparency from causing the damage.
Be used for fixed elastic sealing element, optical cable termination box upper cover, transparent nut below to be provided with dismantlement auxiliary member (9), the auxiliary member is equipped with the spring including the shape of falling T post, cylinder upper end cover, and cylinder lower extreme block department inlays establishes the ball, and the spring supports tight nut rear end. Dismantle the effect that auxiliary member can play on the one hand and make things convenient for elastic sealing spare to change, can unload partial effort under the effect of spring when transparent piece receives external force and assault on the one hand, play good anti-vibration effect. The bottom of the optical cable terminal box is provided with a shallow groove track for the ball of the disassembly auxiliary part to slide in the track.
When the elastic sealing element needs to be disassembled and replaced, the external nut is unscrewed, the spring at the upper end of the disassembling auxiliary element abuts against the lower end of the internal nut under the action of elastic force, and then the transparent element is pressed down gently to take out the elastic sealing element for replacement.
When the transparent part is required to be moved away and an operation hole is reserved, the external nut is unscrewed, the spring at the upper end of the disassembly auxiliary part supports the lower end of the internal nut tightly under the action of elastic force, then the transparent part is pressed down gently, and the transparent part can roll at the bottom of the optical cable terminal box and can move in the optical cable terminal box under the action of the disassembly auxiliary part, so that the transparent part can drive the internal nut and the bolt to move. Push down and remove the transparency, with the transparency from observing hole trompil department and remove, then loosen the overdraft to the transparency, the transparency supports tightly at the box body inner wall of optical cable terminal box under the effect of spring, inside nut, and the space of observing the hole can be reserved and use as the handle hole to when operating the inside of optical cable terminal box, no longer need take the optical cable terminal box whole apart.
Example 3
An optical cable terminal box with an observation window is integrally formed into an integral box body, wherein the integral box body only has an observation window (10) on the upper surface and the side surface is designed into an open state.
The optical cable terminal box is matched with the telescopic jacking piece for use to realize the sealing of the window of the observation window, the telescopic jacking piece jacks the lower surface of the transparent piece, so that the transparent piece is tightly attached to the lower surface of the window of the observation window, the telescopic jacking piece is of a three-section structure and comprises a telescopic section (11), a fixed connecting section (12) and a bottom platform section (13), wherein the upper surface of the bottom platform section (13) is fixedly connected with the fixed connecting section (12), the fixed connecting section (12) is of a hollow structure, wherein a spring (14) is arranged in the cavity of the hollow structure, the upper end of the fixed connecting section (12) is movably connected with the telescopic section (11), the lower end of the telescopic section (11) is acted by the spring (14) in the cavity of the hollow structure, the telescopic section (11) can be compressed into a hollow structure cavity which is contained in the fixed connection section (12) under the action of external force, and the telescopic section (11) can be pushed out of the hollow structure cavity under the action of a spring (14) in the fixed connection section (12) after the external force is removed. The uppermost end of the telescopic section (11) in the telescopic jacking piece is of a hemispherical structure, and the upper surface of the telescopic jacking piece is a hemispherical surface. And the telescopic section is of a cross-shaped structure, and during installation, a lug (10) transversely extending out of the telescopic section and the base section (13) can be clamped by a tool to compress the telescopic tightening section.
The optical cable terminal box fitting further comprises a transparent part and a side cover (15), wherein an annular groove is formed in the lower surface of the transparent part, the inner surface of the groove is matched with the shape of a hemispherical surface at the upper end of the telescopic jacking part, the depth of the annular groove at the position corresponding to the installation position of the telescopic jacking part is deeper, and a circle of elastic sealing element is arranged on the upper surface of the transparent part in a surrounding mode through weather-resistant organic silica gel; the inner surface shape of the side cover (15) is matched with the shape of the side opening of the optical cable terminal box, so that the side cover (15) can be tightly covered at the side opening of the optical cable terminal box through interference fit, the side cover (15) is prepared through a secondary injection molding process, an engineering plastic shell is firstly subjected to one-step injection molding, then a layer of elastomer material is subjected to secondary injection molding on the inner surface of the formed engineering plastic shell, and the sealing effect of the covering position of the side cover (15) can be ensured when the side opening is covered by the side cover (15).
The installation and use processes of the optical cable terminal box are as follows: the method comprises the steps of completing internal wiring arrangement through an observation window reserved on an optical cable terminal box, then conveying a transparent piece to the observation window from a side opening of the optical cable terminal box, aligning an elastic sealing piece on the transparent piece to be close to the lower surface of the observation window, clamping lugs and a bottom platform section on a telescopic section of a telescopic jacking piece by a tool to enable the telescopic jacking piece to be in a compressed state so as to send the telescopic jacking piece into a terminal box, guiding and sending the upper surface of a hemisphere of the telescopic jacking piece to an installation position in a sliding mode in an annular groove of the transparent piece, adjusting the pressure applied to the telescopic jacking piece by the tool, finding the accurate installation position of the telescopic jacking piece through the clamping and matching of the upper surface of the hemisphere of the telescopic jacking piece and a hemisphere groove of the lower surface of the transparent piece, releasing the compressed telescopic jacking piece and withdrawing the tool, and repeating the steps for multiple times so as to send the plurality of telescopic jacking, the flexible top tight piece pushes up the transparent piece under the effort of spring, and the elastic sealing member of transparent piece upper surface closely laminates the lower surface of terminal box upper cover and forms effective sealed. When all the telescopic jacking pieces are installed in place, the side cover is sleeved at the side opening of the optical cable terminal box, and the optical cable terminal box forms an effective sealed whole. Traditional split type optical cable terminal box processes box body and lid respectively, and inside walks to connect the lid on the box body after the line installation is accomplished again, and the leak source that this kind of split type design mechanism formed is more to be difficult to form effective sealedly. The integral optical cable terminal box provided by the invention is of an integral structure, internal wiring installation is carried out through the reserved opening of the observation window, sealing of the opening of the observation window is realized through the telescopic jacking piece after installation is finished, not only can effective sealing of the opening be realized, but also the opening of the observation window can be opened by moving the transparent piece when maintenance is needed in the optical cable terminal box for maintenance operation, when the transparent piece and the optical cable terminal box are assembled together through threaded connection, the optical cable terminal box can be installed only by designing the optical cable terminal box into a split structure, and the threaded connecting piece is easy to be rusted and opened when exposed to the external environment for a long time, in addition, in order to disassemble the transparent piece during maintenance, the threaded connecting piece needs to be unscrewed repeatedly, under the condition of multiple screwing, the openings on the optical cable terminal box and the transparent piece can be deformed, so that effective connection and sealing are difficult to form, the invention realizes sealing of the transparent part through the telescopic jacking piece, avoids the use of holes and threaded connecting pieces on the structural part, and can prevent the failure problem caused by threaded connection while forming effective sealing.
Claims (2)
1. An optical cable head with an observation window, characterized in that: the optical cable terminal box comprises a nut, a bolt, an optical cable terminal box upper cover, an elastic sealing element and a transparent element, wherein the transparent element is a transparent component for observing the internal condition of the optical cable terminal box; the elastic sealing element is made of fluororubber, a U-shaped outer edge boss is arranged at the position of the opening of the elastic sealing element, so that the edge of an observation hole of the upper cover of the optical cable terminal box is clamped in the U-shaped opening in a matching mode, the elastic sealing element and the edge of the observation hole form sealing matching, and a dismounting auxiliary element is arranged below a nut used for fixing the elastic sealing element, the upper cover of the optical cable terminal box and the transparent element; the disassembly auxiliary part comprises an inverted T-shaped column, a spring is sleeved on the column body, a ball is embedded at a cap at the lower end of the column body, and the upper end spring abuts against the rear end of the nut.
2. An optical cable head according to claim 1, characterized in that: the optical cable terminal box further comprises a weather-proof shading sealing cover matched with the shape and size of the observation hole of the upper cover of the optical cable terminal box, the sealing cover can be clamped in the observation hole opening wrapped by the elastic sealing element, the sealing cover can be plugged in the observation hole opening when observation operation is not carried out, and the weather-proof shading sealing cover is made of epoxy resin materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350338.XA CN108107520B (en) | 2017-12-15 | 2017-12-15 | Optical cable terminal box with observation window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350338.XA CN108107520B (en) | 2017-12-15 | 2017-12-15 | Optical cable terminal box with observation window |
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| CN108107520A CN108107520A (en) | 2018-06-01 |
| CN108107520B true CN108107520B (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711350338.XA Active CN108107520B (en) | 2017-12-15 | 2017-12-15 | Optical cable terminal box with observation window |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110471150A (en) * | 2019-09-10 | 2019-11-19 | 安徽屹创智能科技有限公司 | A kind of communication engineering optical cable installation end traction device |
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| CN202561038U (en) * | 2012-04-10 | 2012-11-28 | 上海乐研电气科技有限公司 | Sealing ring for enclosed type instrument filled with gas or liquid |
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