CN205689756U - Black box - Google Patents
Black box Download PDFInfo
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- CN205689756U CN205689756U CN201620615545.8U CN201620615545U CN205689756U CN 205689756 U CN205689756 U CN 205689756U CN 201620615545 U CN201620615545 U CN 201620615545U CN 205689756 U CN205689756 U CN 205689756U
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- Prior art keywords
- sealing ring
- curved portions
- black box
- cell wall
- annular groove
- Prior art date
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Abstract
This utility model relates to the field of sealing technology of fluid line, especially relates to a kind of black box.This black box includes that the first sealing ring and the second sealing ring, the endocyclic area of described first sealing ring and the second sealing ring are provided with annular groove, and the cross section of the side cell wall of described annular groove includes the curved portions to groove direction protrusion；Described first sealing ring and the second sealing ring stacking are arranged, and the curved portions place cell wall of the curved portions place cell wall of described first sealing ring and the second sealing ring is adjacent.Above-mentioned black box can realize good sealing effectiveness when the pressure medium in pipeline is bigger, thus avoid the occurrence of and occur that because the pressure medium in pipeline is excessive the situation of leakage occurs.
Description
Technical field
This utility model relates to the field of sealing technology of fluid line, especially relates to a kind of black box.
Background technology
Sealing ring is widely used in every field as a kind of seal member.Difference based on the field of use, sealing ring
It is designed to various different shape, such as: U-shaped, O type, Y type, rectangle etc..Such as, fire hydrant uses O type rubber seal
Circle；It is installed on the packing holder that fire hydrant seals in boring cover.After O type rubber seal is loaded into packing holder, its
Cross section is born contact compression stress and is produced elastic deformation, and contact surface is produced certain initial contact force；Even if not being situated between
Matter pressure or pressure are the least, and O type rubber seal also can rely on the elastic force of self to realize sealing.Packing holder is provided with ditch
Groove, is used for connecting water band, and when fire hydrant is toward conveying water in water band, water can flow through boring cover, now can be by hydraulic pressure inside sealing ring
Compression, shifts to low-pressure side, and its elastic deformation strengthens further, thus causes contact pressure on sealing contact surface, plays sealing
Effect.
But traditional sealing ring, when pressure medium in pipeline is bigger, there will be gap between described sealing ring, from
And good sealing cannot be realized, thus there will be the leakage of medium.The most in practice, we often can see fire hydrant
In use, at boring cover, constantly spray water, here it is because occurring in that gap between sealing ring and pipeline at boring cover, thus,
Water can from pipeline internal leakage out, the most not only waste water resource, and reduces the hydraulic pressure in pipeline, and use is caused one
Determine harmful effect.
Utility model content
The purpose of this utility model is to provide a kind of black box, to solve present in prior art in fluid line
The sealing ring technical problem that sealing effectiveness is the best when pipeline internal medium pressure is bigger.
This utility model provides a kind of black box, and described black box includes the first sealing ring and the second sealing ring, institute
The endocyclic area stating the first sealing ring and the second sealing ring is provided with annular groove, and the horizontal stroke of the side cell wall of described annular groove
Cross section includes the curved portions protruded to groove direction；Described first sealing ring and the second sealing ring stacking are arranged, and described first
The curved portions place cell wall of sealing ring and the curved portions place cell wall of the second sealing ring are adjacent.
Further, the cross section of the opposite side of the described annular groove that described curved portions is relative is straight line, and described directly
Line is parallel to the plane at described annular groove place.
Further, the described curved portions in described first sealing ring and the second sealing ring described curved portions and together with
Form a parabola.
Further, the height of described curved portions side cell wall is more than the height of the opposite side cell wall of described annular groove
Degree.
Further, described curved portions is circular arc.
Further, described curved portions is elliptic arc, and the short axle of elliptic arc place ellipse points to and described curved portions institute
At another sidewall of the relative described annular groove of sidewall, major axis points to the opening direction of described annular groove.
Further, the side relative with the second sealing ring that be used for of described first sealing ring is provided with first annular depression
District, the side relative with the first sealing ring that be used for of described second sealing ring is provided with the second ring-shaped depression district, described first ring
Shape depressed area is corresponding with described second ring-shaped depression district, in order to when the first sealing ring and the second sealing ring stacking, close first
Toroidal cavity is formed between seal and the second sealing ring.
Further, the cross section of described toroidal cavity is tetragon；Or, the cross section of described toroidal cavity is oval
Shape.
Further, the material of described first sealing ring and the second sealing ring is nitrile rubber.
Further, the outer region of described first sealing ring and the second sealing ring is provided with annular protrusion.
The black box that this utility model provides, the annular that the endocyclic area of its first sealing ring and the second sealing ring is arranged
The cross section of the side cell wall of groove includes the curved portions protruded to groove direction；It is used at the first sealing ring and the second sealing ring
During the sealing of pipeline, the medium in pipeline is applied to the direction of a component of the pressure in described curved portions towards described arc
The inner side in portion, the side deviating from annular groove of the most described curved portions side cell wall.And due to described black box
The first sealing ring and the second sealing ring stacking arrange, and the curved portions place cell wall of described first sealing ring and the second sealing ring
Curved portions place cell wall adjacent, so, the curved portions of the first sealing ring makes the cell wall of this curved portions side be managed
The pressure towards the second sealing ring that medium in road is applied, the curved portions of the second sealing ring makes this curved portions side
The pressure towards the first sealing ring that cell wall is applied by the medium in pipeline, say, that the pressure of the medium in pipeline
The side that the first sealing ring and the second sealing ring can be made to connect is tight, and, the pressure of the medium in pipeline is the biggest, and first seals
The joint of circle and the second sealing ring will be all the more tight, and sealing effectiveness is more preferable, thus, the sealing group that this utility model provides
Part can improve the problem that the pressure of the medium in pipeline is bad compared with sealing effectiveness in the case of big, the pressure medium in pipeline
Good sealing effectiveness is realized time bigger.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, will use required in embodiment below
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiment of the present utility model, the most should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other relevant accompanying drawings according to these accompanying drawings.
The schematic diagram of the black box that Fig. 1 provides for this utility model embodiment 1；
Fig. 2 be black box shown in Fig. 1 partly cut open schematic diagram；
Fig. 3 is the enlarged diagram in A portion in Fig. 2；
The schematic diagram of the black box that Fig. 4 provides for this utility model embodiment 2；
Fig. 5 is the enlarged diagram in B portion in Fig. 4.
Reference:
1-the first sealing ring；
2-the second sealing ring；
3-annular groove；
4-curved portions；
5-toroidal cavity；
6-annular protrusion.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described
Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only
Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, described art can be understood with concrete condition
Language concrete meaning in this utility model.
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that herein
Described detailed description of the invention is merely to illustrate and explains this utility model, is not limited to this utility model.This practicality
Novel offer one black box, and provide embodiment.
Embodiment 1
The black box in this utility model embodiment 1 it is shown in Fig. 1 and Fig. 2.As depicted in figs. 1 and 2, described sealing
Assembly includes the first sealing ring 1 and the second sealing ring 2, and described first sealing ring 1 sets respectively with the endocyclic area of the second sealing ring 2
It is equipped with annular groove 3, and the cross section of the side cell wall of described annular groove 3 includes the curved portions 4 to groove direction protrusion；Institute
State the first sealing ring 1 and the second sealing ring 2 stacking to arrange, and the curved portions 4 place cell wall of described first sealing ring 1 and second close
The curved portions 4 place cell wall of seal 2 is adjacent.
In above-mentioned black box, the annular groove 3 that the endocyclic area of its first sealing ring 1 and the second sealing ring 2 is arranged
The cross section of side cell wall includes the curved portions 4 protruded to groove direction；It is used for managing at the first sealing ring 1 and the second sealing ring 2
During the sealing in road, the medium in pipeline is applied to the direction of a component of the pressure in described curved portions 4 towards described arc
The inner side in portion 4, the side deviating from annular groove 3 of the most described curved portions 4 side cell wall.And due to described sealing group
First sealing ring 1 of part and the second sealing ring 2 stacking are arranged, and the curved portions 4 place cell wall and second of described first sealing ring 1
The curved portions 4 place cell wall of sealing ring 2 is adjacent, and so, the curved portions 4 of the first sealing ring 1 makes this curved portions 4 side
The pressure towards the second sealing ring 2 that cell wall is applied by the medium in pipeline；Similarly, the curved portions 4 of the second sealing ring 2
Also the pressure towards the first sealing ring 1 that the cell wall of this curved portions 4 side is applied by the medium in pipeline can be made.?
In the case of this, the side that the pressure of the medium in pipeline can make the first sealing ring 1 and the second sealing ring 2 connect is tight, and, pipe
The pressure of the medium in road is the biggest, and the joint of the first sealing ring 1 and the second sealing ring 2 will be all the more tight, and sealing effectiveness is just
More preferably, thus, above-mentioned black box can realize good sealing effectiveness in the case of the pressure medium in pipeline is relatively big, changes
It is kind because the pressure of the medium in pipeline is compared with big and sealing effectiveness is bad and then problem that leakage occur.
As it is shown on figure 3, the described curved portions 4 of described curved portions 4 in described first sealing ring 1 and the second sealing ring 2 is also
A parabola can be formed together, so make between described first sealing ring 1 and the second sealing ring 2 in smoothing junction, in pipeline
Medium to be applied to described first sealing ring 1 be uniform with the power on the second sealing ring 2, it is to avoid the first sealing ring and second close
Seal, because producing gap between discontinuity, affects sealing effectiveness.
Specifically, the described curved portions 4 in the first sealing ring 1 and the second sealing ring 2 can be circular arc；Or, curved portions 4
For elliptic arc.When described curved portions 4 is elliptic arc, the short axle of elliptic arc place ellipse points to and side, described curved portions 4 place
Another sidewall of the described annular groove 3 that wall is relative, major axis points to the opening direction of described annular groove 3.
In the present embodiment 1, the material of the first sealing ring and the second sealing ring can be fluorosioloxane rubber, neoprene, butyl
Rubber, silicone rubber or nitrile rubber, but preferably nitrile rubber.Butadiene-propylene nitrile rubber is by butadiene and acrylonitrile two
Plant the copolymer that monomer prepares through emulsion polymerization, be called for short nitrile rubber (NBR).Nitrile rubber mainly uses low temperature emulsion to be polymerized
Method produces, and oil resistivity is fabulous, and wearability is higher, and thermostability is preferable, and bonding force is strong, and nitrile rubber is mainly for the manufacture of oil resistant rubber
Goods, are oil resistant (especially alkane oil), the preferable synthetic rubber of ageing-resistant performance.In nitrile rubber acrylonitrile content have 42～
46%, 36～41%, 31～35%, 25～30% and 18～24% 5 kind, acrylonitrile content is the most, and oil resistivity is the best, but resistance to
Cold, decline accordingly, nitrile rubber is amorphism amorphous polymer, and green strength is relatively low, it is necessary to adds reinforcing agent and just has
Use value, the nitrile rubber that acrylonitrile mass fraction is higher is had to be favorably improved intensity and the wearability of vulcanizate；It is permissible
Use for a long time in the air of 120 DEG C or in the oil of 150 DEG C, heat oxygen aging resistance and day photooxidation aging property preferable, additionally, it is also
There is good resistance to water, air-tightness and excellent adhesive property, be widely used in system various oil resistant rubber goods, multiple resistance to lubricating pad
Circle, pad, good sealing effect.Additionally nitrile rubber sealing ring, is suitable for petroleum hydraulic oil, glycol system hydraulic oil, diester-based
The media such as lubricating oil, gasoline, water, silicone grease, silicone oil use, is the rubber seal that current purposes is the widest, cost is minimum.
In succession develop the nitrile rubber new varieties with property, such as hydrogenated nitrile-butadiene rubber, PNBR, liquid both at home and abroad
Nitrile rubber, and improve the combination property of nitrile rubber from different blend rubbers, rubber and plastic etc. so that nitrile rubber produces
Product seriation, functionalization, superior.
The outer region of described first sealing ring 1 and the second sealing ring 2 is provided with annular protrusion 6.Described annular protrusion 6 is right
Described first sealing ring 1 and the second sealing ring 2 play fixation when being arranged on packing holder, and annular protrusion 6 makes sealing
Assembly produces certain pretension amount when mounted, it is achieved the passive seal of black box；The shape of annular protrusion 6 can be according to close
The structure of seal seat is designed, such as the shape shown in Fig. 3, does not do particular requirement.
Embodiment 2
The black box in this utility model embodiment 2 it is shown in Fig. 4 and Fig. 5.As shown in Figure 4 and Figure 5, embodiment 1
Difference with embodiment 2 is, the side relative with the second sealing ring 2 that be used for of described first sealing ring 1 is provided with the first ring
Shape depressed area, the side relative with the first sealing ring 1 that be used for of described second sealing ring 2 is provided with the second ring-shaped depression district, institute
State first annular depressed area corresponding with described second ring-shaped depression district, in order in the first sealing ring 1 and the second sealing ring 2 stacking
Time, between the first sealing ring 1 and the second sealing ring 2, form toroidal cavity 5.The cross section of described toroidal cavity 5 can be four
Limit shape or ellipse.
As shown in Figure 4 and Figure 5, described black box includes the first sealing ring 1 and the second sealing ring 2, and described first seals
Circle 1 and second endocyclic area of sealing ring 2 are respectively arranged with annular groove 3, and the side cell wall of described annular groove 3 is transversal
Face includes the curved portions 4 protruded to groove direction；Described first sealing ring 1 and the second sealing ring 2 stacking are arranged, and described first
The curved portions 4 place cell wall of sealing ring 1 and the curved portions 4 place cell wall of the second sealing ring 2 are adjacent.
In above-mentioned black box, the annular groove 3 that the endocyclic area of its first sealing ring 1 and the second sealing ring 2 is arranged
The cross section of side cell wall includes the curved portions 4 protruded to groove direction；It is used for managing at the first sealing ring 1 and the second sealing ring 2
During the sealing in road, the medium in pipeline is applied to the direction of a component of the pressure in described curved portions 4 towards described arc
The inner side in portion 4, the side deviating from annular groove 3 of the most described curved portions 4 side cell wall.And due to described sealing group
First sealing ring 1 of part and the second sealing ring 2 stacking are arranged, and the curved portions 4 place cell wall and second of described first sealing ring 1
The curved portions 4 place cell wall of sealing ring 2 is adjacent, and so, the curved portions 4 of the first sealing ring 1 makes this curved portions 4 side
The pressure towards the second sealing ring 2 that cell wall is applied by the medium in pipeline；Similarly, the curved portions 4 of the second sealing ring 2
Also the pressure towards the first sealing ring 1 that the cell wall of this curved portions 4 side is applied by the medium in pipeline can be made.?
In the case of this, under force, the curved portions 4 relative motion extruding toroidal cavity 5 of the first sealing ring 1 and the second sealing ring 2,
Rather than the power that medium applies acts directly on sealing ring, crush seal circle, this avoid the first sealing ring 1 close with second
Seal 2, by excessive compression, causes expendable deformation, thus affects sealing effectiveness.
The side that the pressure of the medium in pipeline can make the first sealing ring 1 and the second sealing ring 2 connect is tight, and, pipe
The pressure of the medium in road is the biggest, and the joint of the first sealing ring 1 and the second sealing ring 2 will be all the more tight, and sealing effectiveness is just
More preferably, compare the black box in embodiment 1, the black box in the present embodiment 2, add toroidal cavity 5, thus, this reality
Execute the black box in example 2 and can compare the black box in embodiment 1 in pipeline, bear bigger pressure medium, it is achieved
Good sealing effectiveness, preferably improves because the pressure of the medium in pipeline is compared with big and sealing effectiveness is bad and then leakage occurs
Problem.
As it is shown in figure 5, the described curved portions 4 of described curved portions 4 in described first sealing ring 1 and the second sealing ring 2 is also
A parabola can be formed together, so make between described first sealing ring 1 and the second sealing ring 2 in smoothing junction, in pipeline
Medium to be applied to described first sealing ring 1 be uniform with the power on the second sealing ring 2, it is to avoid the first sealing ring and second close
Seal, because producing gap between discontinuity, affects sealing effectiveness.
Specifically, the described curved portions 4 in the first sealing ring 1 and the second sealing ring 2 can be circular arc；Or, curved portions 4
For elliptic arc.When described curved portions 4 is elliptic arc, the short axle of elliptic arc place ellipse points to and side, described curved portions 4 place
Another sidewall of the described annular groove 3 that wall is relative, major axis points to the opening direction of described annular groove 3.
In the present embodiment 2, the material of the first sealing ring and the second sealing ring can be fluorosioloxane rubber, neoprene, butyl
Rubber, silicone rubber or nitrile rubber, but preferably nitrile rubber.Butadiene-propylene nitrile rubber is by butadiene and acrylonitrile two
Plant the copolymer that monomer prepares through emulsion polymerization, be called for short nitrile rubber (NBR).Nitrile rubber mainly uses low temperature emulsion to be polymerized
Method produces, and oil resistivity is fabulous, and wearability is higher, and thermostability is preferable, and bonding force is strong, and nitrile rubber is mainly for the manufacture of oil resistant rubber
Goods, are oil resistant (especially alkane oil), the preferable synthetic rubber of ageing-resistant performance.In nitrile rubber acrylonitrile content have 42～
46%, 36～41%, 31～35%, 25～30% and 18～24% 5 kind, acrylonitrile content is the most, and oil resistivity is the best, but resistance to
Cold, decline accordingly, nitrile rubber is amorphism amorphous polymer, and green strength is relatively low, it is necessary to adds reinforcing agent and just has
Use value, the nitrile rubber that acrylonitrile mass fraction is higher is had to be favorably improved intensity and the wearability of vulcanizate；It is permissible
Use for a long time in the air of 120 DEG C or in the oil of 150 DEG C, heat oxygen aging resistance and day photooxidation aging property preferable, additionally, it is also
There is good resistance to water, air-tightness and excellent adhesive property, be widely used in system various oil resistant rubber goods, multiple resistance to lubricating pad
Circle, pad, good sealing effect.Additionally nitrile rubber sealing ring, is suitable for petroleum hydraulic oil, glycol system hydraulic oil, diester-based
The media such as lubricating oil, gasoline, water, silicone grease, silicone oil use, is the rubber seal that current purposes is the widest, cost is minimum.
In succession develop the nitrile rubber new varieties with property, such as hydrogenated nitrile-butadiene rubber, PNBR, liquid both at home and abroad
Nitrile rubber, and improve the combination property of nitrile rubber from different blend rubbers, rubber and plastic etc. so that nitrile rubber produces
Product seriation, functionalization, superior.
The outer region of described first sealing ring 1 and the second sealing ring 2 is provided with annular protrusion 6.Described annular protrusion 6 is right
Described first sealing ring 1 and the second sealing ring 2 play fixation when being arranged on packing holder, and annular protrusion 6 makes sealing
Assembly produces certain pretension amount when mounted, it is achieved the passive seal of black box；The shape of annular protrusion 6 can be according to close
The structure of seal seat is designed, for example, the shape shown in Fig. 5, does not do particular requirement.
In sum, the black box that this utility model provides, its first sealing ring 1 and interior ring region of the second sealing ring 2
The cross section of the side cell wall of the annular groove 3 that territory is arranged includes the curved portions 4 protruded to groove direction；At the first sealing ring 1
When being used for the sealing of pipeline with the second sealing ring 2, the medium in pipeline is applied to a component of the pressure in described curved portions 4
Direction towards the inner side of described curved portions 4, the most described curved portions 4 side cell wall deviate from the one of annular groove 3
Side.And owing to the first sealing ring 1 and second sealing ring 2 stacking of described black box are arranged, and the arc of described first sealing ring 1
The curved portions 4 place cell wall of shape portion 4 place cell wall and the second sealing ring 2 is adjacent, and so, the curved portions 4 of the first sealing ring 1 makes
The pressure towards the second sealing ring 2 that the cell wall of this curved portions 4 side is applied by the medium in pipeline, second seals
The curved portions 4 of circle 2 make the cell wall of this curved portions 4 side by the medium in pipeline applied towards the first sealing ring 1
Pressure, say, that the pressure of the medium in pipeline can make the side that the first sealing ring 1 and the second sealing ring 2 connect tight,
And, the pressure of the medium in pipeline is the biggest, and the joint of the first sealing ring 1 and the second sealing ring 2 will be all the more tight, seals
Effect just more preferably, thus, the black box that this utility model provides can improve the situation that the pressure of the medium in pipeline is bigger
The problem that lower seal effect is bad, realizes good sealing effectiveness when pressure medium in pipeline is bigger.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail this utility model with reference to foregoing embodiments, those of ordinary skill in the art should
Understand: the technical scheme described in foregoing embodiments still can be modified by it, or to the most some or all of
Technical characteristic carries out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of type each embodiment technical scheme.
Claims (10)
1. a black box, it is characterised in that include the first sealing ring and the second sealing ring, described first sealing ring and second
The endocyclic area of sealing ring is provided with annular groove, and the cross section of the side cell wall of described annular groove includes to groove direction
The curved portions protruded；
Described first sealing ring and the second sealing ring stacking are arranged, and the curved portions place cell wall and second of described first sealing ring
The curved portions place cell wall of sealing ring is adjacent.
Black box the most according to claim 1, it is characterised in that the described annular groove that described curved portions is relative another
The cross section of side is straight line, and described straight line parallel is in the plane at described annular groove place.
Black box the most according to claim 1 and 2, it is characterised in that the described curved portions in the first sealing ring and the
The described curved portions of two sealing rings also forms a parabola together.
Black box the most according to claim 1 and 2, it is characterised in that the height of described curved portions side cell wall
Height more than the opposite side cell wall of described annular groove.
Black box the most according to claim 1 and 2, it is characterised in that described curved portions is circular arc.
Black box the most according to claim 1 and 2, it is characterised in that described curved portions is elliptic arc, and elliptic arc institute
Point to another sidewall of the described annular groove relative with described curved portions place sidewall at oval short axle, major axis points to described
The opening direction of annular groove.
Black box the most according to claim 1 and 2, it is characterised in that being used for of described first sealing ring is close with second
The relative side of seal is provided with first annular depressed area, described second sealing ring for the side relative with the first sealing ring
Being provided with the second ring-shaped depression district, described first annular sunk area is corresponding with described second ring-shaped depression district, in order to first
When sealing ring and the second sealing ring stacking, between the first sealing ring and the second sealing ring, form toroidal cavity.
Black box the most according to claim 7, it is characterised in that the cross section of described toroidal cavity is tetragon；
Or, the cross section of described toroidal cavity is oval.
Black box the most according to claim 1 and 2, it is characterised in that described first sealing ring and the second sealing ring
Material is nitrile rubber.
Black box the most according to claim 1, it is characterised in that outside described first sealing ring and the second sealing ring
Ring region territory is provided with annular protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615545.8U CN205689756U (en) | 2016-06-21 | 2016-06-21 | Black box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615545.8U CN205689756U (en) | 2016-06-21 | 2016-06-21 | Black box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689756U true CN205689756U (en) | 2016-11-16 |
Family
ID=57416498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620615545.8U Expired - Fee Related CN205689756U (en) | 2016-06-21 | 2016-06-21 | Black box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143711A (en) * | 2017-06-22 | 2017-09-08 | 合肥聪亨新型建材科技有限公司 | A kind of flange gasket |
-
2016
- 2016-06-21 CN CN201620615545.8U patent/CN205689756U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143711A (en) * | 2017-06-22 | 2017-09-08 | 合肥聪亨新型建材科技有限公司 | A kind of flange gasket |
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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 |
Granted publication date: 20161116 Termination date: 20170621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |