CN107235137A - A kind of discharge structure of aircraft door - Google Patents
A kind of discharge structure of aircraft door Download PDFInfo
- Publication number
- CN107235137A CN107235137A CN201710508600.2A CN201710508600A CN107235137A CN 107235137 A CN107235137 A CN 107235137A CN 201710508600 A CN201710508600 A CN 201710508600A CN 107235137 A CN107235137 A CN 107235137A
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- CN
- China
- Prior art keywords
- water
- bar
- interior
- discharge structure
- aircraft door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000003860 storage Methods 0.000 claims abstract description 31
- 239000003351 stiffener Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 206010061688 Barotrauma Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
- B64C1/1407—Doors; surrounding frames
- B64C1/1453—Drain masts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention provides a kind of discharge structure of aircraft door, including draining kerve, water bar, drainpipe and check-valves；Water storage tank, driving chamber and the water-blocking groove for including bottom land seat in draining kerve and being set along bottom land seat length direction；Bellmouth is provided with the trench bottom of water storage tank；Drainpipe is fixedly connected on the lower section of bellmouth；Check-valves is serially connected on drainpipe.The discharge structure of the aircraft door can be realized when the closure of cone seal head is on bellmouth and is fully sealed, realize that it is self-closed to close hatch door, ensure that air pressure is normal, ensure safe take-off, and when aircraft door is opened, draining is realized automatically, and is not in ponding because the effect of water bar also stops to the water droplet of hatch door edge.
Description
Technical field
The present invention relates to a kind of discharge structure, especially a kind of discharge structure of aircraft door.
Background technology
With economic prosperity, the continuous raising of people's living standard, the development of production technology is become better and better, people
To the security and comfortableness of trip requirement also more and more higher, aircraft be a kind of more convenient and efficiently trip mode it
One, situations such as aircraft is occurred into water unavoidably in hatch door opening process, therefore added discharge structure, cabin at hatch door aboard
Door discharge structure is that rainwater is discharged into nacelle exterior, it is to avoid ponding operation normal to aircraft is adversely affected.In current art
It is to set foraminate covering that water is guided out outside cabin in fuselage lower end, but equally can be also made to the air pressure in the flight of aircraft
Into influence, security is not high, but also can there is a situation where that ponding is not clean.
The content of the invention
The technical problem to be solved in the present invention can be impacted to the air pressure in the flight of aircraft in current art, safety
Property is not high, but also can there is a situation where that ponding is not clean.
In order to solve the above-mentioned technical problem, the invention provides a kind of discharge structure of aircraft door, including draining kerve,
Water bar, drainpipe and check-valves；Draining kerve include bottom land seat and along bottom land seat length direction set water storage tank,
Driving chamber and water-blocking groove；Water storage tank is located at the left side of bottom land seat, and driving chamber and water-blocking groove are located at the right side of bottom land seat, and drive
Dynamic chamber is located at the lower section of water-blocking groove；Bellmouth is provided with the trench bottom of water storage tank；Laterally set on the left and right sides inwall of water storage tank
There is horizontal support, fix bar is vertically provided with the lower section of horizontal support；Sliding sleeve is arranged with fix bar；Under sliding sleeve
End is provided with the cone seal head relative with bellmouth；Bearing is provided with the left side wall of water storage tank, installation is hinged on bearing
There is rectangle frame, be provided with rectangular opening before and after rectangle frame on side frame；Sliding sleeve runs through rectangle frame, and on the inwall of sliding sleeve
Provided with the short axle being embedded in rectangular opening；T-shaped plate is provided with the right side of rectangle frame, bar shaped chute is provided with T-shaped plate；Water bar
Bottom is embedded in water-blocking groove, and is provided with lead in the lower section of water bar；Stage clip is arranged with lead；The lower end of lead
Stretched to through dash trench bottom in driving chamber, and provided with the sealing ring being set on lead on dash trench bottom；Driving
Dynamic intracavitary rotary type is horizontally arranged with drive shaft；Drive gear is provided with drive shaft；It is located in lead in driving chamber
End sides be provided with the sliding tooth that is meshed with drive gear；Drive shaft, which runs through to the right, to be stretched in water storage tank, and
Inserting end is provided with swing rod；Provided with the driving post being embedded in bar shaped chute on the free end of swing rod；Drainpipe is fixedly connected on
The lower section of bellmouth；Check-valves is serially connected on drainpipe.
Using being arranged with sliding sleeve in fix bar, and sliding sleeve bottom lock, so that in the closure of cone seal head in cone
, also will not the gas leakage at sliding sleeve when on shape hole；A sliding sleeve is constituted using rectangle frame, T-shaped plate, swing rod and driving post to insert
Pull out drive mechanism so that sliding sleeve is slided up and down along fix bar；Oneself of water bar is constituted using water bar, lead and stage clip
Dynamic lifting, is pressed against on water bar so that water bar is moved downward when aircraft door is closed, and the drive shaft below driving turns
It is dynamic, so as to drive the closure of cone seal head on bellmouth, realize that it is self-closed to close hatch door, it is ensured that air pressure is normal, it is ensured that peace
Take off entirely, and when aircraft door is opened, due to the effect of stage clip, water bar rises, and drives drive shaft to rotate backward, and enters one
Step drives cone seal head to rise, and draining is realized automatically, and because the effect of water bar is also carried out to the water droplet of hatch door edge
Stop, be not in ponding；It can prevent moisture content from entering driving chamber using sealing ring, internal gear is effectively protected.
As the further limits scheme of the present invention, check-valves includes valve shell, upper end connecting tube, catch basin and pressure
Spring；Provided with sliding cavity in valve shell；Upper end connecting tube is vertically inserted on valve shell, and the lower end of upper end connecting tube is stretched
Enter to slide in cavity；Catch basin is slidably mounted in sliding cavity, and stage clip is supported on reservoir bases and sliding cavity bottom
Between；The upside notch of catch basin is set on the lower end of upper end connecting tube；It is provided with the lower end of valve shell and sliding cavity
The delivery port being connected.Non-return can be played a part of using check-valves, effects of air pressure current are further prevented, or prevent other
Produce and pour in down a chimney when the current in place converge；It is slidably mounted at using catch basin in sliding cavity, can be in upper end connecting tube
Moved down when hydraulic pressure reaches to a certain degree, so that water can continue to flow downward along drainpipe, and in upper end connecting tube
When hydraulic pressure is less than certain value, catch basin upward sliding in the presence of stage clip, so as to be blocked to upper end connecting tube, is realized
According to the function of hydraulic pressure automatic open-close.
As the further limits scheme of the present invention, apopore is provided with the lower end tube wall of upper end connecting tube.Using going out
Water hole can accelerate water outlet efficiency, prevent ponding.
As the further limits scheme of the present invention, T-shaped slippage slot is axially arranged with along it on the inwall of sliding cavity；
The lateral wall of catch basin is provided with the T-shaped sliding block being embedded in T-shaped slippage slot.Using the effect of T-shaped slippage slot and T-shaped sliding block, energy
Enough so that T-shaped slippage slot smooth sliding.
As the further limits scheme of the present invention, provided with support guard bar at the notch of water storage tank；Under support guard bar
Side is provided with screen pack.It can realize that current are filtered using screen pack, prevent from causing the blocking of check-valves.
As the further limits scheme of the present invention, it is provided with and adds in the left and right sides inwall junction of horizontal support and water storage tank
Strengthening tendons plate.The structural strength of horizontal support can effectively be strengthened using stiffener plate.
As the present invention further limits scheme, water bar by bottom rectangular strip and be arranged on rectangular strip top
Left slope and right slope are constituted.Using the setting of left slope and right slope, left slope is used to quickly lead current
Enter in water storage tank, right slope is used to carry out downthrust with aircraft door, realizes the pressing and relieving of water bar.
As the further limits scheme of the present invention, limit sliding chutes are provided with the groove inwall of water-blocking groove；In rectangular strip
Left and right side is provided with the position limiting slide block being embedded in limit sliding chutes.Dash can be realized using the effect of limit sliding chutes and position limiting slide block
Bar it is spacing, prevent from being rebounded out outside water-blocking groove by stage clip.
As the further limits scheme of the present invention, permeable hole is provided between water-blocking groove and water storage tank.Using permeable hole
Ponding in water-blocking groove can be flowed rapidly into water storage tank, prevent water-blocking groove internal water accumulation.
As the further limits scheme of the present invention, bottom sleeve is provided with driving chamber；The lower slide formula of lead
It is inserted into bottom sleeve.The lower end of lead can be carried out spacing, it is ensured that the snap-in force of teeth, prevented using bottom sleeve
Slip teeth.
The beneficial effects of the present invention are：Using being arranged with sliding sleeve in fix bar, and sliding sleeve bottom lock, so that
, also will not the gas leakage at sliding sleeve when the closure of cone seal head is on bellmouth；Using rectangle frame, T-shaped plate, swing rod and drive
Dynamic post constitutes a sliding sleeve plug drive mechanism so that sliding sleeve is slided up and down along fix bar；Use water bar, lead with
And stage clip constitutes the automatic lifting of water bar, is pressed against when aircraft door is closed on water bar so that water bar is moved downward,
Drive shaft below driving is rotated, so as to drive the closure of cone seal head on bellmouth, realizes that it is self-closed to close hatch door,
Ensure that air pressure is normal, it is ensured that safe take-off, and when aircraft door is opened, due to the effect of stage clip, water bar rises, and drives and drives
Dynamic rotating shaft is rotated backward, and is further driven to the rise of cone seal head, draining is realized automatically, and because the effect of water bar is also to cabin
The water droplet of door edge is stopped, is not in ponding；It can prevent moisture content from entering driving chamber using sealing ring, to inner teeth
Wheel is effectively protected.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is draining kerve internal structure schematic diagram of the invention；
Fig. 3 is check valve structure schematic diagram of the invention；
Fig. 4 is T-shaped plate structural representation of the invention.
In figure:1st, draining kerve, 2, water bar, 3, drainpipe, 4, check-valves, 101, bottom land seat, 102, water storage tank, 103,
Water-blocking groove, 104, driving chamber, 105, support guard bar, 106, screen pack, 107, horizontal support, 108, fix bar, 109, sliding sleeve,
110th, cone seal head, 111, rectangle frame, 112, bearing, 113, T-shaped plate, 114, rectangular opening, 115, short axle, 116, reinforcement
Plate, 117, permeable hole, 118, limit sliding chutes, 119, lead, 120, stage clip, 121, sealing ring, 122, bottom sleeve, 123, drive
Dynamic tooth, 124, drive shaft, 125, drive gear, 126, swing rod, 127, bar shaped chute, 128, bellmouth, 129, sealing fin,
201st, rectangular strip, 202, left slope, 203, right slope, 401, valve shell, 402, upper end connecting tube, 403, catch basin,
404th, stage clip, 405, sliding cavity, 406, delivery port, 407, apopore, 408, T-shaped slippage slot, 409, T-shaped sliding block.
Embodiment
As Figure 1-4, the discharge structure of aircraft door of the invention includes：Draining kerve 1, water bar 2, drainpipe 3
And check-valves 4；In the water storage tank 102 that draining kerve 1 includes bottom land seat 101 and is set along bottom land 101 length directions of seat, drive
Dynamic chamber 104 and water-blocking groove 103；Water storage tank 102 is located at the left side of bottom land seat 101, and driving chamber 104 and water-blocking groove 103 are located at
The right side of bottom land seat 101, and driving chamber 104 is located at the lower section of water-blocking groove 103；Bellmouth is provided with the trench bottom of water storage tank 102
128；Horizontal support 107 is transversely provided with the left and right sides inwall of water storage tank 102, is vertically provided with the lower section of horizontal support 107
Fix bar 108；Sliding sleeve 109 is arranged with fix bar 108；Provided with relative with bellmouth 128 on the lower end of sliding sleeve 109
Cone seal first 110；Provided with sealing fin 129 on the conical surface of cone seal first 110；On the left side wall of water storage tank 102
Provided with bearing 112, it is hinged on bearing 112 and rectangle frame 111 is installed, is being provided with rectangle before and after rectangle frame 111 on side frame
Hole 114；Sliding sleeve 109 runs through rectangle frame 111, and provided with the short axle being embedded in rectangular opening 114 on the inwall of sliding sleeve 109
115；T-shaped plate 113 is provided with the right side of rectangle frame 111, bar shaped chute 127 is provided with T-shaped plate 113；The bottom of water bar 2 is embedding
Lead 119 is provided with water-blocking groove 103, and in the lower section of water bar 2；Stage clip 120 is arranged with lead 119；It is oriented to
The lower end of post 119 is stretched in driving chamber 104 through the bottom of water-blocking groove 103, and is led on the bottom of water-blocking groove 103 provided with being set in
To the sealing ring 121 on post 119；Rotary type is horizontally arranged with drive shaft 124 in driving chamber 104；In drive shaft 124
Provided with drive gear 125；It is provided with and is meshed with drive gear 125 in the end sides that lead 119 is located in driving chamber 104
Sliding tooth 123；Drive shaft 124, which runs through to the right, to be stretched in water storage tank 102, and provided with swing rod 126 on inserting end；In pendulum
The free end of bar 126 is provided with the driving post being embedded in bar shaped chute 127；Drainpipe 3 is fixedly connected under bellmouth 128
Side；Check-valves 4 is serially connected on drainpipe 3.
As shown in figure 3, check-valves 4 includes valve shell 401, upper end connecting tube 402, catch basin 403 and stage clip 404；
Provided with sliding cavity 405 in valve shell 401；Upper end connecting tube 402 is vertically on inserting valve shell 401, and upper end is connected
The lower end of pipe 402 is stretched into sliding cavity 405；Catch basin 403 is slidably mounted in sliding cavity 405, and stage clip 404 is supported on
Between the bottom of catch basin 403 and sliding cavity 405 bottom；The upside notch of catch basin 403 is set under upper end connecting tube 402
On end；The delivery port 406 being connected with sliding cavity 405 is provided with the lower end of valve shell 401.The connecting tube 402 in upper end
Lower end tube wall is provided with apopore 407.It is axially arranged with T-shaped slippage slot 408 along it on the inwall of sliding cavity 405；In retaining
The lateral wall of groove 403 is provided with the T-shaped sliding block 409 being embedded in T-shaped slippage slot 408.
Provided with support guard bar 105 at the notch of water storage tank 102；Screen pack 106 is provided with below support guard bar 105.
The left and right sides inwall junction of horizontal support 107 and water storage tank 102 is provided with stiffener plate 116.Water bar 2 by bottom rectangular strip
201 and it is arranged on the left slope 202 and right slope 203 on the top of rectangular strip 201 and constitutes.In the groove inwall of water-blocking groove 103
It is provided with limit sliding chutes 118；The position limiting slide block 204 being embedded in limit sliding chutes 118 is provided with the left and right side of rectangular strip 201.
Permeable hole 117 is provided between water-blocking groove 103 and water storage tank 102.Bottom sleeve 122 is provided with driving chamber 104；Lead 119
Lower slide formula be inserted into bottom sleeve 122.
The discharge structure of the aircraft door of the present invention when in use, utilizes water bar 2, lead 119 and the structure of stage clip 120
Into the automatic lifting of water bar 2, it is pressed against on water bar 2 so that water bar 2 is moved downward, drives when aircraft door is closed
The drive shaft 124 of lower section is rotated, so as to drive cone seal first 110 to block on bellmouth 128, realizes that it is automatic to close hatch door
Closing, it is ensured that air pressure is normal, it is ensured that safe take-off；And when aircraft door is opened, due to the effect of stage clip 12,2 liters of water bar
Rise, drive drive shaft 124 to rotate backward, be further driven to cone seal first 110 and rise, draining is realized automatically, and due to gear
The effect of water bar 2 also stops to the water droplet of hatch door edge, is not in edge ponding；Under current direction in drainpipe 3
During motion, when the hydraulic pressure of upper end connecting tube 402 reaches to a certain degree, catch basin 403 is moved down, so as to enable water to from storage
Tank 403 overflows, and continuation flows downward along drainpipe 3；And when the hydraulic pressure of upper end connecting tube 402 is less than certain value, catch basin
403 in the presence of stage clip 404 upward sliding, so as to be blocked to upper end connecting tube 402, realize and opened automatically according to hydraulic pressure
The function of conjunction；Using rectangle frame 111, T-shaped plate 113, driving post, swing rod 126, drive shaft 124, drive gear 125 and lead
A plug drive mechanism of sliding sleeve 109 is constituted to the sliding tooth 123 on post 119 so that sliding sleeve 109 is along in fix bar 108
Lower slider, so as to drive the plug of cone seal first 110 and bellmouth 128.
Claims (10)
1. a kind of discharge structure of aircraft door, it is characterised in that：Including draining kerve（1）, water bar（2）, drainpipe（3）With
And check-valves（4）；In draining kerve（1）Including bottom land seat（101）And along bottom land seat（101）The water storage tank that length direction is set
（102）, driving chamber（104）And water-blocking groove（103）；Water storage tank（102）Positioned at bottom land seat（101）Left side, driving chamber（104）
And water-blocking groove（103）Positioned at bottom land seat（101）Right side, and driving chamber（104）Positioned at water-blocking groove（103）Lower section；In product
Tank（102）Trench bottom be provided with bellmouth（128）；In water storage tank（102）Left and right sides inwall on be transversely provided with horizontal support
（107）, in horizontal support（107）Lower section vertically be provided with fix bar（108）；In fix bar（108）On be arranged with sliding sleeve
（109）；In sliding sleeve（109）Lower end be provided with and bellmouth（128）Relative cone seal head（110）；In water storage tank
（102）Left side wall be provided with bearing（112）, in bearing（112）On be hinged rectangle frame be installed（111）, in rectangle frame（111）
Front and rear side frame be provided with rectangular opening（114）；Sliding sleeve（109）Through rectangle frame（111）, and in sliding sleeve（109）It is interior
Wall is provided with and is embedded in rectangular opening（114）Interior short axle（115）；In rectangle frame（111）Right side be provided with T-shaped plate（113）, in T-shaped
Plate（113）It is provided with bar shaped chute（127）；Water bar（2）Bottom be embedded in water-blocking groove（103）It is interior, and in water bar（2）Under
Side is provided with lead（119）；In lead（119）On be arranged with stage clip（120）；Lead（119）Lower end run through water-blocking groove
（103）Bottom stretches to driving chamber（104）It is interior, and in water-blocking groove（103）Bottom is provided with and is set in lead（119）On it is close
Seal（121）；In driving chamber（104）Interior rotary type is horizontally arranged with drive shaft（124）；In drive shaft（124）It is provided with
Drive gear（125）；In lead（119）Positioned at driving chamber（104）Interior end sides are provided with and drive gear（125）Phase
The sliding tooth of engagement（123）；Drive shaft（124）Run through to the right and stretch to water storage tank（102）It is interior, and provided with pendulum on inserting end
Bar（126）；In swing rod（126）Free end provided with being embedded in bar shaped chute（127）Interior driving post；Drainpipe（3）It is fixed to connect
It is connected on bellmouth（128）Lower section；Check-valves（4）It is serially connected in drainpipe（3）On.
2. the discharge structure of aircraft door according to claim 1, it is characterised in that：Check-valves（4）Including valve shell
（401）, upper end connecting tube（402）, catch basin（403）And stage clip（404）；In valve shell（401）It is interior to be provided with sliding cavity
（405）；Upper end connecting tube（402）Vertical inserting valve shell（401）On, and upper end connecting tube（402）Lower end stretch into sliding
Cavity（405）It is interior；Catch basin（403）It is slidably mounted at sliding cavity（405）It is interior, stage clip（404）It is supported on catch basin（403）
Bottom and sliding cavity（405）Between bottom；Catch basin（403）Upside notch be set in upper end connecting tube（402）Lower end
On；In valve shell（401）Lower end be provided with and sliding cavity（405）The delivery port being connected（406）.
3. the discharge structure of aircraft door according to claim 2, it is characterised in that：In upper end connecting tube（402）Under
End pipe wall is provided with apopore（407）.
4. the discharge structure of aircraft door according to claim 2, it is characterised in that：In sliding cavity（405）Inwall
On be axially arranged with T-shaped slippage slot along it（408）；In catch basin（403）Lateral wall provided with being embedded in T-shaped slippage slot（408）It is interior
T-shaped sliding block（409）.
5. the discharge structure of aircraft door according to claim 1, it is characterised in that：In water storage tank（102）Notch at
Provided with support guard bar（105）；In support guard bar（105）Lower section is provided with screen pack（106）.
6. the discharge structure of aircraft door according to claim 1, it is characterised in that：In horizontal support（107）With ponding
Groove（102）Left and right sides inwall junction be provided with stiffener plate（116）.
7. the discharge structure of aircraft door according to claim 1, it is characterised in that：Water bar（2）Rectangle by bottom
Bar（201）And it is arranged on rectangular strip（201）The left slope on top（202）With right slope（203）Constitute.
8. the discharge structure of aircraft door according to claim 7, it is characterised in that：In water-blocking groove（103）Groove inwall
It is provided with limit sliding chutes（118）；In rectangular strip（201）Left and right side provided with being embedded in limit sliding chutes（118）Interior position limiting slide block
（204）.
9. the discharge structure of aircraft door according to claim 1, it is characterised in that：In water-blocking groove（103）With water storage tank
（102）Between be provided with permeable hole（117）.
10. the discharge structure of aircraft door according to claim 1, it is characterised in that：In driving chamber（104）It is interior to be provided with bottom
Parts casing pipe（122）；Lead（119）Lower slide formula be inserted into bottom sleeve（122）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508600.2A CN107235137A (en) | 2017-06-28 | 2017-06-28 | A kind of discharge structure of aircraft door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508600.2A CN107235137A (en) | 2017-06-28 | 2017-06-28 | A kind of discharge structure of aircraft door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107235137A true CN107235137A (en) | 2017-10-10 |
Family
ID=59990172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508600.2A Pending CN107235137A (en) | 2017-06-28 | 2017-06-28 | A kind of discharge structure of aircraft door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107235137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748927A (en) * | 2022-04-08 | 2022-07-15 | 中国商用飞机有限责任公司 | Filter screen subassembly and drainage device |
-
2017
- 2017-06-28 CN CN201710508600.2A patent/CN107235137A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748927A (en) * | 2022-04-08 | 2022-07-15 | 中国商用飞机有限责任公司 | Filter screen subassembly and drainage device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171010 |
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| RJ01 | Rejection of invention patent application after publication |