CN203688872U - Dustproof and moistureproof protective device - Google Patents
Dustproof and moistureproof protective device Download PDFInfo
- Publication number
- CN203688872U CN203688872U CN201420017430.XU CN201420017430U CN203688872U CN 203688872 U CN203688872 U CN 203688872U CN 201420017430 U CN201420017430 U CN 201420017430U CN 203688872 U CN203688872 U CN 203688872U
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- box
- protective device
- dust
- sealing
- half box
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Abstract
The utility model discloses a dustproof and moistureproof protective device, and aims to provide a protective device having good cooperation and low precision requirements, and ensuring sealing effects under the conditions of pressure bearing and heating. The device comprises an upper half box and a lower half box. The upper half box and the lower half box are connected to form an integrated box body. The two ends of the box body are provided with fiber hole frames. Each fiber hole frame comprises an outer part and an inner part. Each outer part is provided with a fiber inlet sleeve. Each inner part is formed by a semi-hole groove on the lower half box and a semi-hole groove on the upper half box. The semi-hole grooves are provided with corresponding elastic clamp sleeves. The upper half box and the lower half box are both provided with sealing grooves. Sealing strips are disposed inside the sealing grooves. The sealing strips and the elastic clamp sleeves form sealing rings. The cross section of the sealing strips is a trapezoid with an outward long bottom edge. The lower half box is provided with a plurality of predetermined positions. The beneficial effects are that the device effectively protects cable continuing terminals, is low in size precision requirements, accurate and efficient in assembly, good in sealing property, high in dustproof and moistureproof performance and high in integral intensity, and enables the butt joint parts of the sealing rings to be not easy to shift.
Description
Technical field
The utility model belongs to lightguide cable link technical field, relates in particular to a kind of dust and moisture protective device.
Background technology
Dust and moisture protective device, claims to be again optical cable connecting box, belongs to mechanical pressure sealing adaptor system, is between adjacent optical cable, to provide optics, sealing and physical strength the successional end protective device that continues.The straight-through of system of laying such as built on stilts, pipeline, direct-burried that is mainly applicable to various structure optical cables is connected with branch.As the current conventional one end protective device that continues; dust and moisture protective device is widely used; existing dust and moisture protective device; generally formed by two and half boxes; O-ring seal is set therebetween; end arranges optical cable inlet wire or wire hole, in order to realize sealing, pressure-bearing anti-impact and optical cable turnover, continue, and the structure such as fibre-optical splice of internal portion of being used for that plays dust and moisture is protected.But; in the hermetically-sealed construction of existing dust and moisture protective device; the quality of fit of O-ring seal and seal groove is had relatively high expectations; in the time being subject to external pressure, easily there is lateral deviation and cause structure shakiness, partially sealed inefficacy in O-ring seal, moreover; when dust and moisture protective device pressure-bearing, while being heated; softening and the compressive deformation of O-ring seal, easily occurs that overflow part, breakage, affects sealing.
Utility model content
The utility model is to adopt common hermetically-sealed construction in order to overcome dust and moisture protective device in prior art; when pressure-bearing is large, be heated when larger; the situation such as be prone to O-ring seal shakiness, be shifted, overflow; cause the affected deficiency of sealing effectiveness; a kind of no-float is provided, and accuracy requirement is low, and assembling is simple; location effectively, also can ensure the protective device of sealing effectiveness when pressure-bearing is heated.
To achieve these goals, the utility model is by the following technical solutions:
A kind of dust and moisture protective device, comprise first box, second box, between first described box and second box, be connected by screw into a box body, described box body two ends are respectively equipped with at least two optic fibre hole framves, described optic fibre hole frame comprises outer section, inner segment, envelope casting die on the described outer section of semi-cylindrical groove by second box end and first box forms, in described outer section, be provided with optical fiber and enter muzzle, described optical fiber enters the spacing column cap that is provided with some projections in muzzle, described inner segment is made up of jointly half hole slot on half hole slot and first box on second box, in half described hole slot, be provided with the elastic ferrule corresponding with half hole slot, first described box, on second box, be equipped with the seal groove being communicated with half hole slot on half box of self place, in a seal groove, be provided with a sealing strip, elastic ferrule on described sealing strip and self place half box is joined together to form O-ring seal, sealing strip height on one and half boxes exceeds seal groove notch 0.5 on this half box to 1mm, in elastic ferrule at least one half box, be provided with some elasticity side by side and be tamping flange, described sealing strip section is outwardly trapezoidal of large base, described sealing strip width is less than the width of correspondence position on seal groove, second described box is provided with the pre-determined bit portion of some outwardly convexs, first described box is provided with the pre-determined bit groove with pre-determined bit portion adaptation, described pre-determined bit portion is truncated cone-shaped.Optical fiber entrance cover stretches into or stretches out for optical fiber, and optical fiber is also needing through elastic ferrule after optical fiber enters muzzle, then enters in box body, and spacing column cap can be pushed down fibre bundle, avoids it to shake and causes elastic ferrule displacement.Elastic ferrule and sealing strip form O-ring seal jointly, make whole first box lower edge, second box upper limb all there is a complete circle hermetically-sealed construction, this point is compared connector box in the past, has solved the problem that the sealing of optical fiber porch is interrupted, and overall tightness is greatly strengthened.Have many time, on connector box, do not need to use all optical fiber entrances, now can utilize plug to carry out shutoff, elasticity is tamping the existence of flange, can and protruding head between form the multiple sealing that contacts, the optical fiber entrance of having avoided dust, water never to use enters in box.And the section of sealing strip is trapezoidal, the large base contact of two sealing strips, thus greatly reduce accuracy requirement, because contact area is large, even if the seal groove alignment accuracy of two and half boxes is lower, can not affect sealing contact yet.And when sealing strip compressive deformation, expand to both sides, the contact portion of two sealing strips further increases, and sealing strip is while being subject to the power from seal groove bottom land, regardless of the direction of power, directly stressed part is how for sealing strip, always some is eternal press seal groove, so can not be offset as conventional grommet type seals, and sealing strip width is less than the width of correspondence position on seal groove, ensure surplus, prevented that sealing strip from overflowing that seal groove local deformation outer and that cause is excessive, sealing strip is damaged.And, the existence of pre-determined bit portion, the convenient degree while having improved assembling, the degree of registration between can assisted Extraction highly dense seal.
As preferably, first described box, the inside surface of second box are provided with reinforcement structure, described reinforcement structure comprises some horizontal bars, some vertical muscle, described horizontal bar, vertical muscle intert mutually staggered, and the height of intervening portion is consistent, described horizontal bar inside surface is plane, and described vertical muscle inside surface is cambered surface, in described box body, be provided with connector housing base, described connector housing pony sill is located on the reinforcement structure of first box or second box.Strengthen structure and not only can strengthen the load performance of box body, and it is excessive to prevent that box body is out of shape after pressurized, thereby make O-ring seal can too not come out obvious extrusion deformation even occurs, thus the sealing of maintaining.Connector housing base is connected to be strengthened in structure, plays auxiliary positioning and effect fastened to each other, that support.
As preferably, described O-ring seal and on elasticity be tamping flange and be integrated formed structure and made by rubber.Bulk strength is higher, form sealing strip, the elastic ferrule of O-ring seal one-body molded, has improved the integral sealing effect of first box, second all junctions of box, can better ensure the result of use of dust and moisture protective device.
As preferably, between first described box and second box, be provided with two upper arms, described upper arm one end is stretched in box body and is connected with box body by screw.Upper arm can be connected to box body on installation position, improves the stability of working environment.
As preferably, described first box, second box periphery are provided with some abutment rings in correspondence with each other, and the screw that connects first box and second box is fixed and clamped first box and second box by abutment ring.
As preferably, described first box, second box two ends are provided with side plate, and within described optic fibre hole frame is in side plate scope, described semi-cylindrical groove inside surface is provided with some pickup grooves, and described optical fiber entrance puts and is provided with the head into bar corresponding with pickup groove.Head into bar and pickup groove is worked in coordination, in the time of assembling, can carry out pre-determined bit, after assembling, can improve connectivity, guarantee that optical fiber enters muzzle and is in contact with it the stable of structure.
As preferably, end face and bottom surface that described optical fiber enters muzzle are provided with groove, and groove runs through optical fiber and enter the length direction of muzzle.Can improve the contact effect of optical fiber contact sleeve, leave certain elastic deformation space, avoid expanding with heat and contract with cold or dimensional accuracy not high enough and cause optical fiber contact sleeve to be subject to excessive compression, also avoid it that larger position skew occurs.
As preferably, described pre-determined bit portion is on the side plate of second box.
The beneficial effects of the utility model are: the requirement of assembly precision is lower, has saved cost, and O-ring seal joint compresses mutually and is difficult for being shifted, upper second box joint outer rim has totally continuous hermetically-sealed construction, and sealing is good, has reinforcement structure in box body, anti-pressure ability is strong, and bulk strength is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of second box of the utility model;
Fig. 3 is the structural representation of first box of the utility model;
Fig. 4 is the structural representation of sealing strip section in the utility model embodiment 1;
Fig. 5 is the structural representation that the utility model optical fiber enters muzzle place;
Fig. 6 is the structural representation at the utility model elastic ferrule place; .
In figure: first box 1, second box 2, envelope casting die 3, optical fiber enter muzzle 4, spacing column cap 5, elastic ferrule 6, sealing strip 7, elasticity and is tamping flange 8, horizontal bar 9, vertical muscle 10, connector housing base 11, upper arm 12, abutment ring 13, side plate 14, heads into bar 15, groove 16, pre-determined bit portion 17.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, in embodiment shown in Fig. 6, a kind of dust and moisture protective device, comprise first box 1, second box 2, between first described box 1 and second box 2, be connected by screw into a box body, described box body two ends are respectively equipped with at least two optic fibre hole framves, described optic fibre hole frame comprises outer section, inner segment, described outer section is made up of the envelope casting die 3 on semi-cylindrical groove and first box 1 of second box 2 ends, in described outer section, be provided with optical fiber and enter muzzle 4, described optical fiber enters the spacing column cap 5 that is provided with some projections in muzzle 4, described inner segment is made up of jointly half hole slot on half hole slot and first box 1 on second box 2, in half described hole slot, be provided with the elastic ferrule corresponding with half hole slot 6, first described box 1, on second box 2, be equipped with the seal groove being communicated with half hole slot on half box of self place, in a seal groove, be provided with a sealing strip 7, elastic ferrule 6 on described sealing strip 7 and self place half box is joined together to form O-ring seal, sealing strip 7 on one and half boxes highly exceeds seal groove notch 0.5 on this half box to 1mm, in elastic ferrule 6 at least one half box, be provided with some elasticity side by side and be tamping flange 8, described sealing strip 7 sections are outwardly trapezoidal of large base, described sealing strip 7 width are less than the width of correspondence position on seal groove.First described box 1, the inside surface of second box 2 are provided with reinforcement structure, described reinforcement structure comprises some horizontal bars 9, some vertical muscle 10, described horizontal bar 9, vertical muscle 10 intert mutually staggered, and the height of intervening portion is consistent, described horizontal bar 9 inside surfaces are plane, and described vertical muscle 10 inside surfaces are cambered surface.In described box body, be provided with connector housing base 11, described connector housing base 11 is erected on the reinforcement structure of first box 1 or second box 2.Described O-ring seal and on elasticity be tamping flange 8 and be integrated formed structure and made by rubber.Between first described box 1 and second box 2, be provided with two upper arms 12, described upper arm 12 one end are stretched in box body and are connected with box body by screw.Described first box 1, second box 2 peripheries are provided with some abutment rings 13 in correspondence with each other, connect first box 1 and first box 1 are fixed and clamped with second box 2 by abutment ring 13 with the screw of second box 2.Described first box 1, second box 2 two ends are provided with side plate 14, and within described optic fibre hole frame is in side plate 14 scopes, described semi-cylindrical groove inside surface is provided with some pickup grooves, and described optical fiber enters muzzle 4 and is provided with corresponding with the pickup groove bar 15 that heads into.End face and bottom surface that described optical fiber enters muzzle 4 are provided with groove 16, and groove 16 runs through optical fiber and enter the length direction of muzzle 4.Described pre-determined bit portion 17 is on the side plate 14 of second box 2.
Optical fiber enters muzzle 4 for the stretching into or stretch out of optical fiber, and optical fiber also needs through elastic ferrule 6 after entering muzzle 4 through optical fiber, then enters in box body, and spacing column cap 5 can be pushed down fibre bundle, avoids it to shake and causes elastic ferrule 6 to be shifted.Elastic ferrule 6 and the common formation O-ring seal of sealing strip 7, make whole first box 1 lower edge, second box 2 upper limbs all there is a complete circle hermetically-sealed construction, this point is compared connector box in the past, has solved the problem that the sealing of optical fiber porch is interrupted, and overall tightness is greatly strengthened.Have many time, on connector box, do not need to use all optical fiber entrances, now can utilize plug to carry out shutoff, elasticity is tamping the existence of flange 8, can and protruding head between form the multiple sealing that contacts, the optical fiber entrance of having avoided dust, water never to use enters in box.And the section of sealing strip 7 is trapezoidal, the large base contact of two sealing strips 7, thus greatly reduce accuracy requirement, because contact area is large, even if the seal groove alignment accuracy of two and half boxes is lower, can not affect sealing contact yet.And when sealing strip 7 compressive deformation, expand to both sides, the contact portion of two sealing strips 7 further increases, and sealing strip 7 is while being subject to the power from seal groove bottom land, regardless of the direction of power, directly stressed part is how for sealing strip 7, always some is eternal press seal groove, so can not be offset as conventional grommet type seals, and sealing strip 7 width are less than the width of correspondence position on seal groove, ensure surplus, prevented that sealing strip 7 from overflowing that seal groove local deformation outer and that cause is excessive, sealing strip 7 breakages.
Claims (9)
1. a dust and moisture protective device, comprise first box (1), second box (2), between described first box (1) and second box (2), be connected by screw into a box body, it is characterized in that, described box body two ends are respectively equipped with at least two optic fibre hole framves, described optic fibre hole frame comprises outer section, inner segment, described outer section is made up of the envelope casting die (3) on semi-cylindrical groove and first box (1) of second box (2) end, in described outer section, be provided with optical fiber and enter muzzle (4), described optical fiber enters to be provided with in muzzle (4) the spacing column cap (5) of some projections, described inner segment is made up of jointly half hole slot on half hole slot on second box (2) and first box (1), in half described hole slot, be provided with the elastic ferrule corresponding with half hole slot (6), described first box (1), on second box (2), be equipped with the seal groove being communicated with half hole slot on half box of self place, in a seal groove, be provided with a sealing strip (7), elastic ferrule (6) on described sealing strip (7) and self place half box is joined together to form O-ring seal, sealing strip (7) on one and half boxes highly exceeds seal groove notch 0.5 on this half box to 1mm, in elastic ferrule (6) at least one half box, be provided with some elasticity side by side and be tamping flange (8), described sealing strip (7) section is outwardly trapezoidal of large base, described sealing strip (7) width is less than the width of correspondence position on seal groove, second described box is provided with the pre-determined bit portion (17) of some outwardly convexs, first described box is provided with the pre-determined bit groove adaptive with pre-determined bit portion (17), described pre-determined bit portion (17) is truncated cone-shaped.
2. a kind of dust and moisture protective device according to claim 1; it is characterized in that; described first box (1), the inside surface of second box (2) are provided with reinforcement structure; described reinforcement structure comprises some horizontal bars (9), some vertical muscle (10); described horizontal bar (9), vertical muscle (10) intert mutually staggered; and the height of intervening portion is consistent; described horizontal bar (9) inside surface is plane, and described vertical muscle (10) inside surface is cambered surface.
3. a kind of dust and moisture protective device according to claim 2; it is characterized in that; in described box body, be provided with connector housing base (11), described connector housing base (11) is erected on the reinforcement structure of first box (1) or second box (2).
4. according to a kind of dust and moisture protective device described in claim 1 or 2 or 3, it is characterized in that, described O-ring seal and on elasticity be tamping flange (8) and be integrated formed structure and made by rubber.
5. according to a kind of dust and moisture protective device described in claim 1 or 2 or 3; it is characterized in that; between described first box (1) and second box (2), be provided with two upper arms (12), described upper arm (12) one end is stretched in box body and is connected with box body by screw.
6. a kind of dust and moisture protective device according to claim 1 and 2; it is characterized in that; described first box (1), second box (2) periphery are provided with some abutment rings (13) in correspondence with each other, connect first box (1) and first box (1) and second box (2) are fixed and clamped by abutment ring (13) with the screw of second box (2).
7. a kind of dust and moisture protective device according to claim 1; it is characterized in that; described first box (1), second box (2) two ends are provided with side plate (14); within described optic fibre hole frame is in side plate (14) scope; described semi-cylindrical groove inside surface is provided with some pickup grooves, and described optical fiber enters muzzle (4) and is provided with corresponding with the pickup groove bar (15) that heads into.
8. a kind of dust and moisture protective device according to claim 1; it is characterized in that; end face and bottom surface that described optical fiber enters muzzle (4) are provided with groove (16), and groove (16) runs through optical fiber and enter the length direction of muzzle (4).
9. a kind of dust and moisture protective device according to claim 7, is characterized in that, described pre-determined bit portion (17) is on the side plate (14) of second box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017430.XU CN203688872U (en) | 2014-01-10 | 2014-01-10 | Dustproof and moistureproof protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017430.XU CN203688872U (en) | 2014-01-10 | 2014-01-10 | Dustproof and moistureproof protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688872U true CN203688872U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420017430.XU Expired - Fee Related CN203688872U (en) | 2014-01-10 | 2014-01-10 | Dustproof and moistureproof protective device |
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| Country | Link |
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| CN (1) | CN203688872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111061012A (en) * | 2019-11-20 | 2020-04-24 | 杭州昱华科技有限公司 | Optical cable fiber core fusion welding protection device |
| CN114346939A (en) * | 2022-03-10 | 2022-04-15 | 浙江辉旺机械科技股份有限公司 | Air tightness detection device of shell die casting |
-
2014
- 2014-01-10 CN CN201420017430.XU patent/CN203688872U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111061012A (en) * | 2019-11-20 | 2020-04-24 | 杭州昱华科技有限公司 | Optical cable fiber core fusion welding protection device |
| CN114346939A (en) * | 2022-03-10 | 2022-04-15 | 浙江辉旺机械科技股份有限公司 | Air tightness detection device of shell die casting |
| CN114346939B (en) * | 2022-03-10 | 2022-08-16 | 浙江辉旺机械科技股份有限公司 | Air tightness detection device of shell die casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20200110 |