CN113104193A - Pressurization prevention mechanism of airplane cabin door - Google Patents
Pressurization prevention mechanism of airplane cabin door Download PDFInfo
- Publication number
- CN113104193A CN113104193A CN202110534991.1A CN202110534991A CN113104193A CN 113104193 A CN113104193 A CN 113104193A CN 202110534991 A CN202110534991 A CN 202110534991A CN 113104193 A CN113104193 A CN 113104193A
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- supercharging
- main body
- cover plate
- rotating shaft
- rocker arm
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- 230000007246 mechanism Effects 0.000 title claims abstract description 74
- 230000002265 prevention Effects 0.000 title claims description 100
- 230000010354 integration Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011321 prophylaxis Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides a pressurization preventing mechanism of an airplane cabin door, which comprises a pressurization preventing cover plate, a rotating shaft and at least one rocker arm, wherein the rocker arm radially extends out of the rotating shaft and is fixed relative to the rotating shaft. The supercharging preventing cover plate comprises a plate main body, a closing engagement member and an opening engagement member which are fixed to or integrated with the plate main body, and can rotate between a closing position and an opening position around a rotating shaft; when the rotating shaft rotates in the opening direction, the rocker arm rotates together with the rotating shaft and rotates to engage with an opening engagement member on the supercharging preventing cover plate, thereby pushing the supercharging preventing cover plate to rotate to the opening position in the opening direction around the rotating shaft, and when the rotating shaft rotates in the closing direction opposite to the opening direction, the rocker arm rotates together with the rotating shaft and rotates to engage with a closing engagement member on the supercharging preventing cover plate, thereby pushing the supercharging preventing cover plate to rotate to the closing position in the closing direction around the rotating shaft. The mechanism has two sets of driving mechanisms, and is high in reliability, simple in driving mechanism form, high in integration degree and small in occupied space.
Description
Technical Field
The invention relates to an airplane cabin door, in particular to a pressurization prevention mechanism of the airplane cabin door.
Background
1. The problem sources are as follows:
according to the CCAR25.783(c) article "there must be measures to prevent any pressurized door from pressurizing the aircraft to unsafe levels without fully closing, latching and locking", the current mainstream models are to meet the requirements of this article, and there are usually two ways to achieve the requirements of this article, namely, a pressurization suppression circuit, and a pressurization prevention wicket, i.e., a pressurization prevention mechanism, which is only closed when the door is fully closed, latched and locked, is added to the door.
2. The prior art is as follows:
the common pressure increase prevention mechanisms are driven by connecting rods, for example, patent document CN204937463U "a pressure increase prevention mechanism", and the solution includes a pressure relief mechanism and a lock mechanism, which are connected by a connecting rod to realize linkage of the pressure relief mechanism and the lock mechanism.
Another solution is to control the ventilation opening of the door by a cam, for example, in CN106347627A, "a cam-controlled multifunctional door ventilation opening device", in which the ventilation opening of the door is controlled by a cam, a handle shaft drives the cam to rotate together, and a roller moves inside the cam, thereby driving the ventilation opening to open and close.
For example, CN104443350B "passenger aircraft door pressure locking mechanism" is a solution in which the opening and closing of the ventilation opening is driven by a cam-rocker mechanism.
3. There are problems:
the mechanism for directly driving the pressurization prevention door through the single connecting rod has the problem of connecting rod failure, and if the driving connecting rod fails, the pressurization prevention mechanism fails, so that the reliability is low. In addition, the door closing position of the supercharging preventive door is adjusted through the driving connecting rod, the driving connecting rod is connected with other mechanisms, the length change of the driving connecting rod can cause the rotation position change of the other mechanisms, and the mechanism relevance is not beneficial to adjustment.
The cam driving mode has high requirements on the manufacturing and assembling precision of the cam and high manufacturing cost. If foreign matters fall into the cam, the mechanism is easy to be stuck, and the maintenance of the air route is not facilitated. Therefore, the structural simplicity and safety of use of the pressurization prevention mechanism of the aircraft door are the primary concerns.
Disclosure of Invention
The object of the present invention is to improve the above-mentioned disadvantages.
The invention provides a pressurization preventing mechanism of an airplane door, which comprises a pressurization preventing cover plate, a rotating shaft and at least one rocker arm, wherein the rocker arm radially extends out of the rotating shaft and is fixed relative to the rotating shaft. The supercharging preventing cover plate comprises a plate main body, a closing engagement member and an opening engagement member fixed to or integrated with the plate main body; the pressure boost prevention cover plate is pivotally mounted on the rotating shaft so that the pressure boost prevention cover plate can rotate around the rotating shaft between a closed position and an open position; when the rotating shaft rotates in an opening direction, the rocker arm rotates together with the rotating shaft and rotates to engage with the opening engagement member on the supercharging preventing cover plate, thereby pushing the supercharging preventing cover plate to rotate around the rotating shaft in the opening direction to the opening position, and when the rotating shaft rotates in a closing direction opposite to the opening direction, the rocker arm rotates together with the rotating shaft and rotates to engage with the closing engagement member on the supercharging preventing cover plate, thereby pushing the supercharging preventing cover plate to rotate around the rotating shaft in the closing direction to the closing position.
On the basis of the above technical solution of the supercharging prevention mechanism of an aircraft door, preferably, the rocker arm includes an arm main body, a closing pushing portion on one side of the arm main body, and an opening pushing portion on the other side of the arm main body, the closing pushing portion of the rocker arm is engageable with the closing engagement member of the supercharging prevention cover, and the opening pushing portion of the rocker arm is engageable with the opening engagement member of the supercharging prevention cover.
In addition to the above-mentioned technical solution of the supercharging preventing mechanism for an aircraft door, preferably, the rocker arm includes a through hole formed in the arm main body and a mounting fastener mounted into the arm main body, and the rocker arm is mounted to the rotating shaft through the through hole and fixed to the rotating shaft by the mounting fastener.
On the basis of the technical scheme of the pressurization prevention mechanism of the aircraft door, preferably, the mounting fastener comprises a pin, and the pin fixes the rocker arm and the rotating shaft together.
On the basis of the above-described technical solution of the supercharging prevention mechanism for an aircraft door, preferably, the closing urging portion includes an urging protrusion protruding from the arm main body of the rocker arm toward the closing engagement member of the supercharging prevention cover, and the closing engagement member includes an engagement protrusion protruding from the plate main body of the supercharging prevention cover toward the urging protrusion, so that the urging protrusion can urge the supercharging prevention cover to rotate to the closed position by engagement with the engagement protrusion.
On the basis of the technical solution of the above-mentioned supercharging preventing mechanism for an aircraft door, preferably, the opening pushing portion includes a pushing recess portion facing the opening engagement member of the supercharging preventing cover plate from the arm main body of the rocker arm, and the opening engagement member includes an engagement pin fixed relative to the plate main body of the supercharging preventing cover plate, so that the pushing recess portion can push the supercharging preventing cover plate to rotate to the opening position by engagement with the engagement pin.
On the basis of the above technical solution of the supercharging preventing mechanism for an aircraft door, preferably, the pushing projection of the rocker arm includes an adjusting bolt screwed in the arm body and a lock nut locking the adjusting bolt with respect to the arm body, so that the length of the adjusting bolt protruding with respect to the arm body is adjustable.
On the basis of the above-mentioned solution of the pressurisation prevention mechanism for an aircraft door, it is preferred that the engagement projection of the pressurisation prevention cover plate comprises a stop pin connected to the plate body.
On the basis of the above-described technical solution of the pressurization prevention mechanism for an aircraft door, it is preferable that the stop pin is configured to be adjustable in length with respect to the plate body.
On the basis of the technical solution of the pressurization prevention mechanism for an aircraft door described above, preferably, the pressurization prevention mechanism further includes a sealing member that is tightly hooped on the periphery of the plate main body of the pressurization prevention cover plate.
In addition to the above-mentioned technical solution of the pressurization preventing mechanism for an aircraft door, preferably, the pressurization preventing cover plate further includes a plurality of mounting holes around a periphery of the plate body for fixing the sealing member to the plate body.
On the basis of the technical solution of the pressurization preventing mechanism for an aircraft door described above, preferably, the plate body further includes at least one pair of support plates, the support plates extend from the plate body on both sides of the at least one rocker arm, so that the rotating shaft is pivotally mounted to the support plates, and the engagement pin is fixedly mounted to the support plates.
On the basis of the technical scheme of the pressurization prevention mechanism of the aircraft door, preferably, the at least one rocker arm is a pair of rocker arms.
Therefore, according to the technical scheme, the pressurization prevention mechanism of the airplane cabin door provided by the invention has the advantages of two sets of driving mechanisms, high reliability, simple driving mechanism form, high integration degree and small occupied space.
Drawings
Fig. 1 is a schematic perspective view of a pressurisation prevention mechanism for an aircraft door according to the present invention, showing the basic components of the pressurisation prevention mechanism;
FIG. 2 is a perspective view similar to FIG. 1, showing the basic components of a pressure gain prevention cover in the pressure gain prevention mechanism;
fig. 3 is a schematic perspective view similar to fig. 1, showing the basic composition of the rocker arm in the supercharging prevention mechanism.
The figures are purely diagrammatic and not drawn true to scale.
List of reference numbers in the figures and examples:
1-a pressurized prophylaxis cover comprising:
11-the main body of the plate,
12-a stop pin for the purpose of stopping the screw,
13-engaging the pin roll with the pin roll,
14-a sealing member-the sealing member,
15-the mounting hole is formed in the base plate,
16-a support plate, wherein the support plate is provided with a plurality of support plates,
2-a rotating shaft;
3-a rocker arm comprising:
31-the body of the arm(s),
32-a through-hole, which is,
33-the recess of the mould part,
34-adjusting the bolt, namely adjusting the bolt,
35-locking the nut, and locking the nut,
36-Pin.
Detailed Description
The terminology used herein for the convenience of describing embodiments of the invention is set forth below.
Opening direction: referring to the opening direction of the pressure boost prevention cover, the rocker arm moves in the opening direction and engages one end of the rocker arm with the pressure boost prevention cover to push the pressure boost prevention cover to an open position, shown in the figure as clockwise.
Closing direction: referring to the closing direction of the pressure gain prevention cover, the rocker arm moves in the closing direction and engages the pressure gain prevention cover at the other end opposite the one end to push the pressure gain prevention cover to the closed position, shown in the figure as counterclockwise.
The present invention will be further described with reference to the accompanying drawings and examples, so that the inventive principles and advantageous effects of the present invention can be more clearly understood.
Fig. 1 shows an embodiment of a pressurisation prevention mechanism for an aircraft door according to the present invention, the pressurisation prevention mechanism consisting essentially of: the device comprises a pressurization prevention cover plate 1, a rotating shaft 2, a rocker arm 3, an adjusting bolt 34, a locking nut 35, a meshing pin shaft 13, a pin 36, a stop nail 12 and a sealing element 14.
Thus, according to the embodiment shown in fig. 1, the present invention provides a pressurisation prevention mechanism for an aircraft door, the pressurisation prevention mechanism comprising a pressurisation prevention cover plate 1, a shaft 2 and at least one rocker arm 3. The supercharging preventing cover 1 includes a plate main body 11, a closing engagement member and an opening engagement member fixed to or integral with the plate main body 11, and the supercharging preventing cover 1 is pivotably mounted on the rotating shaft 2 such that the supercharging preventing cover 1 can swing or rotate about the rotating shaft 2 between a closed position and an open position.
The closing engagement means of the supercharging preventing cover 1 may be a portion of the plate body 11 of the supercharging preventing cover 1 itself facing the rocker arm 3, or may be an engagement projection projecting from the plate body 11 of the supercharging preventing cover 1 toward the rocker arm 3, preferably, as shown in fig. 2, the engagement projection is a stopper pin 12 fixed to the plate body 11, and the stopper pin 12 may also be made adjustable in its projecting length with respect to the plate body 11 so as to adjust the distance of the contact surface of the stopper pin 12 with respect to the plate body 11.
In the embodiment shown in fig. 2, the opening engagement member of the supercharging preventing cover plate 1 is an engagement pin 13 fixed relative to the plate main body 11 of the supercharging preventing cover plate 1, and in the illustrated embodiment, both ends of the engagement pin 13 are fixed to a pair of support plates 16 protruding from the plate main body 11 of the supercharging preventing cover plate 1 on both sides of the rocker arm 3.
As shown in fig. 1 and 2, the swing arm 3 radially protrudes from the rotating shaft 2 and is fixed to the rotating shaft 2, the support plate 16 has a through-hole, and the support plate 16 pivotally mounted to the plate main body 11 through the through-hole rotating shaft 2, that is, pivotally supported to the supercharging preventing cover plate 1, enables the rotating shaft 2 and the supercharging preventing cover plate 1 to rotate relative to each other, whereby the plate main body 11 can swing or rotate relative to the rotating shaft 2. When the rotating shaft 2 rotates along the opening direction, the rocker arm 3 rotates together with the rotating shaft 2 until the rocker arm rotates to be meshed with the meshing pin 13 on the supercharging preventing cover plate 1, the rocker arm 3 continues to rotate along with the rotating shaft 2, and therefore the meshing pin 13 is pushed, and the supercharging preventing cover plate 1 is further pushed to rotate to the opening position along the opening direction around the rotating shaft 2. When the rotation shaft 2 rotates in a closing direction opposite to the opening direction, the rocker arm 3 rotates together with the rotation shaft 2 until rotating to engage with the stopper pins 12 on the supercharging preventing cover plate 1, and the rocker arm 3 continues to rotate with the rotation shaft 2, thereby pushing the stopper pins 12 and thus the supercharging preventing cover plate 1 to rotate in the closing direction to the closed position around the rotation shaft 2. In the embodiment shown in fig. 1, the left end of the rotating shaft 2 is taken as the front end, the right end of the rotating shaft 2 is taken as the rear end, the opening direction is clockwise, and the closing direction is counterclockwise.
According to the embodiment shown in fig. 1, the rocker arm 3 comprises an arm body 31, a closing push portion on one side of the arm body 31 and an opening push portion on the other side of the arm body 31.
The closing pushing portion of the rocker arm 3 is a pushing projection projecting from the arm main body 31 of the rocker arm 3 toward the stopper pin 12 of the supercharging prevention cover plate 1, and preferably, in the embodiment shown in fig. 3, the pushing projection of the rocker arm 3 includes an adjusting bolt 34 and a lock nut 35, the adjusting bolt 34 being screwed in the arm main body 31 so that the projecting length of the adjusting bolt 34 with respect to the arm main body 31 is adjustable, and the lock nut 35 locking the adjusting bolt 34 to the arm main body 31 to fix the projecting length of the bolt screwing. The rocker arm 3 can push the rotation of the supercharging preventing cover plate 1 to the closed position by the engagement of the adjusting bolt 34 thereon with the stop nail 12 of the supercharging preventing cover plate 1.
In the embodiment shown in fig. 3, the opening pushing portion of the rocker arm 3 is a pushing recess 33 from the arm body 31 of the rocker arm 3 toward the engagement pin 13 of the supercharging preventing cover 1, and the opening pushing portion of the rocker arm 3 is made into the pushing recess 33 to facilitate engagement with the engagement pin 13 of the supercharging preventing cover 1, so that the rocker arm 3 can push the supercharging preventing cover 1 to rotate to the open position by engagement of the pushing recess 33 thereon with the engagement pin 13 of the supercharging preventing cover 1.
As shown in fig. 3, a through hole 32 is formed in the arm main body 31 of the rocker arm 3. As shown in fig. 1, the swing arm 3 is mounted to the rotary shaft 2 through the through hole 32, and the pin 36 penetrates the arm body 31 of the swing arm 3 into the rotary shaft 2, whereby the swing arm 3 is fixed to the rotary shaft 2 by the pin 36.
As shown in fig. 1, the supercharging prevention mechanism needs to be sealed to the cabin door, and therefore, the supercharging prevention mechanism further includes a seal member 14 which is tightened around the outer periphery of the plate main body 11 of the supercharging prevention cover 1. To facilitate mounting of the seal 14 to the supercharging prevention cover plate 1, the plate body 11 of the supercharging prevention cover plate 1 has a groove in its outer periphery for receiving the seal 14, while also including a plurality of mounting holes 15 for fixing the seal 14 to the plate body 11.
In the embodiment shown in fig. 1 and 2, there are two sets of driving means for driving the supercharging preventing cover 1 to be closed and opened, i.e., the rocker arms 3 are a pair of rocker arms 3.
Examples of applications and advantages of the pressurisation prevention mechanism of an aircraft door according to the invention are as follows:
the rotating shaft 22 is a rotating shaft 2, two rocker arms 3 are used as two sets of driving mechanisms, the rocker arms 3 are fixed on the rotating shaft 2 through two pins 36, the rotating shaft 2 and the rocker arms 3 move simultaneously, when the rotating shaft 2 rotates, the rocker arms 3 rotate around the axis of the rotating shaft 2, and the rocker arms 3 drive the pressurizing prevention cover plate 1 to open and close. The adjusting bolt 34 is connected with the rocker arm 3 through threads, the relative position relation between the adjusting bolt 34 and the rocker arm 3 can be controlled by rotating the adjusting bolt 34, and the locking nut 35 is used for fixing the position of the adjusting bolt 34.
When the pressure boost preventing cover plate 1 is closed, the rotating shaft 2 rotates counterclockwise relative to the pressure boost preventing cover plate 1, and the adjusting bolt 34 fixed on the rocker arm 3 contacts the pressure boost preventing cover plate 1, preferably, contacts the stop nail 12 on the pressure boost preventing cover plate 1, drives the pressure boost preventing cover plate 1 to rotate around the axis of the rotating shaft 2, and controls the pressure boost preventing cover plate 1 to be closed. The stopper pins 12 function to prevent the adjuster bolt 34 from directly contacting the pressurizing prevention cover plate 1, and to prevent damage to the pressurizing prevention cover plate 1. The length of the adjusting bolt 34 can control the final closing position of the supercharging preventing cover plate 1, thereby controlling the step difference and air tightness between the supercharging preventing cover plate 1 and the cabin door appearance when the supercharging preventing cover plate 1 is closed. Preferably, the length of the adjusting bolt 34 is adjusted in the closed state of the supercharging preventing cover 1, thereby adjusting the step difference and the airtightness with the cabin door profile in the closed state of the supercharging preventing cover 1. The adjusting bolt 34 is close to the axis of the rotating shaft 2, and the adjusting efficiency is high. The stepless adjustment can be realized by adopting a threaded mode, the adjusting bolt 34 is an independent adjusting measure, the positions of other mechanisms are not influenced during adjustment, the adjustment is convenient, and other parts do not need to be detached. After the adjustment is completed, the lock nut 35 is tightened to fix the relative position of the adjusting bolt 34.
When the pressure boost prevention cover plate 1 is opened, the rotating shaft 2 rotates clockwise relative to the pressure boost prevention cover plate 1, the rocker arm 3 contacts with the pressure boost prevention cover plate 1, preferably, the pushing concave part 33 of the rocker arm 3 is meshed with the meshing pin shaft 13 on the pressure boost prevention cover plate 1, the meshing pin shaft 13 is fixedly connected with the pressure boost prevention cover plate 1, the rotation of the rocker arm 3 is transmitted to the pressure boost prevention cover plate 1 through the meshing pin shaft 13, and therefore the pressure boost prevention cover plate 1 is pushed to move clockwise around the axis of the rotating shaft 2, and the opening of the pressure boost prevention cover plate 1 is achieved.
The pressurizing prevention cover plate 1 and the rotating shaft 2 are in a rotating relationship, and can be directly replaced when needing to be replaced, the mounting hole 15 does not need to be repaired, and the maintainability of components is good.
The pressurization prevention cover plate 1 is provided with a mounting hole 15 for mounting a sealing element 14, and the sealing element 14 and the pressurization prevention cover plate 1 can be directly connected through the mounting hole 15 without additional fasteners.
Therefore, the present invention has the following advantageous effects:
1. the integration level of the pressurization prevention mechanism is high, and the occupied space is small. According to the preferred embodiment of the invention, the two rocker arms 3 are used for driving the pressurization to prevent the door from being opened and closed, and the rocker arms 3 are arranged in the cover plate, so that other spaces are not occupied, and the arrangement of other mechanisms of the cabin door is facilitated.
2. The step adjustment of the pressurization prevention cover plate 1 and the appearance of the cabin door is simple, the closing position of the cover plate can be adjusted through the adjusting bolt 34 on the rocker arm 3, the adjusting influence value is single, the positions of other mechanisms of the cabin door cannot be influenced, the adjusting bolt 34 is close to the cover plate rotating shaft 2, and the adjusting efficiency is high.
3. The mechanism has high reliability, the two rocker arms 3 are designed to jointly drive the pressurization prevention cover plate 1 to be opened and closed, when one set of driving mechanism fails, the other set of driving mechanism is still effective, and the movement reliability of the mechanism is improved.
4. The maintainability is good. The pressurizing prevention cover plate 1 and the rotating shaft 2 are in a rotating relationship, and can be directly replaced when the pressurizing prevention cover plate 1 needs to be replaced, and additional assembling and positioning are not needed.
While specific embodiments of the invention have been described above with reference to the accompanying drawings, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principle and spirit of the invention, and such changes and modifications fall within the scope of the invention.
Claims (13)
1. A pressurization prevention mechanism for an aircraft door, comprising:
a supercharging prevention cover plate (1), the supercharging prevention cover plate (1) comprising a plate main body (11), a closing engagement member and an opening engagement member fixed to or integral with the plate main body (11);
a rotating shaft (2), the supercharging prevention cover plate (1) being pivotably mounted on the rotating shaft (2) such that the supercharging prevention cover plate (1) can rotate around the rotating shaft (2) between a closed position and an open position;
at least one rocker arm (3) extending radially from the rotary shaft (2) and fixed relative to the rotary shaft (2), the rocker arm (3) rotating with the rotary shaft (2) and rotating into engagement with the opening engagement member on the supercharging prevention cover plate (1) when the rotary shaft (2) rotates in an opening direction, thereby urging the supercharging prevention cover plate (1) to rotate around the rotary shaft (2) in an opening direction to the open position, and the rocker arm (3) rotating with the rotary shaft (2) and rotating into engagement with the closing engagement member on the supercharging prevention cover plate (1) when the rotary shaft (2) rotates in a closing direction opposite to the opening direction, thereby urging the supercharging prevention cover plate (1) to rotate around the rotary shaft (2) in a closing direction to the closed position.
2. The aircraft door pressurization prevention mechanism according to claim 1,
the rocker arm (3) includes an arm main body (31), a closing push portion at one side of the arm main body (31), and an opening push portion at the other side of the arm main body (31), the closing push portion of the rocker arm (3) being engageable with the closing engagement member of the supercharging prevention cover (1), the opening push portion of the rocker arm (3) being engageable with the opening engagement member of the supercharging prevention cover (1).
3. The aircraft door pressurization prevention mechanism according to claim 2,
the swing arm (3) includes a through hole (32) formed in the arm main body (31) and a mounting fastener mounted into the arm main body (31), and the swing arm (3) is mounted to the rotary shaft (2) through the through hole (32) and fixed to the rotary shaft (2) by the mounting fastener.
4. The aircraft door pressurization prevention mechanism according to claim 3,
the mounting fastener comprises a pin (36), and the pin (36) fixes the rocker arm (3) and the rotating shaft (2) together.
5. The aircraft door pressurization prevention mechanism according to claim 2,
the closing urging portion includes an urging protrusion protruding from the arm main body (31) of the rocker arm (3) toward the closing engagement member of the supercharging prevention cover (1), and the closing engagement member includes an engagement protrusion protruding from the plate main body (11) of the supercharging prevention cover (1) toward the urging protrusion, so that the urging protrusion can urge the supercharging prevention cover (1) to rotate to the closed position by engagement with the engagement protrusion.
6. The aircraft door pressurization prevention mechanism according to claim 5,
the opening pushing portion includes a pushing recess (33) from the arm main body (31) of the rocker arm (3) toward the opening engagement member of the supercharging prevention cover (1), the opening engagement member including an engagement pin (13) fixed relative to the plate main body (11) of the supercharging prevention cover (1), so that the pushing recess (33) can push the supercharging prevention cover (1) to rotate to the open position by engagement with the engagement pin (13).
7. The aircraft door pressurization prevention mechanism according to claim 6,
the push protrusion of the rocker arm (3) includes:
an adjusting bolt (34) screwed in the arm main body (31); and
and a lock nut (35) for locking the adjusting bolt (34) with respect to the arm body (31) so that the length of the adjusting bolt (34) protruding with respect to the arm body (31) is adjustable.
8. The aircraft door pressurization prevention mechanism according to claim 7,
the engagement protrusion of the pressurization preventing cover plate (1) includes a stopper pin (12) connected to the plate main body (11).
9. The aircraft door pressurization prevention mechanism according to claim 8,
the stop pin (12) is configured to be adjustable in length protruding relative to the plate body (11).
10. The aircraft door pressurization prevention mechanism according to claim 1,
the pressurization preventing mechanism further comprises a seal member (14) which is tightened around the outer periphery of the plate main body (11) of the pressurization preventing cover plate (1).
11. The aircraft door pressurization prevention mechanism according to claim 10,
the supercharging prevention cover plate (1) further comprises a plurality of mounting holes (15) around the outer periphery of the plate main body (11) for fixing the seal (14) to the plate main body (11).
12. Pressurization preventing mechanism for an aircraft door according to any one of claims 1 to 11,
the plate body (11) further comprises at least one pair of support plates (16), the support plates (16) extend from the plate body (11) on both sides of the at least one swing arm (3) such that the rotating shaft (2) is pivotably mounted to the support plates (16), and the engagement pin shaft (13) is fixedly mounted to the support plates (16).
13. The aircraft door pressurization prevention mechanism according to claim 12,
the at least one rocker arm (3) is a pair of rocker arms (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110534991.1A CN113104193A (en) | 2021-05-17 | 2021-05-17 | Pressurization prevention mechanism of airplane cabin door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110534991.1A CN113104193A (en) | 2021-05-17 | 2021-05-17 | Pressurization prevention mechanism of airplane cabin door |
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| Publication Number | Publication Date |
|---|---|
| CN113104193A true CN113104193A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110534991.1A Pending CN113104193A (en) | 2021-05-17 | 2021-05-17 | Pressurization prevention mechanism of airplane cabin door |
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| CN (1) | CN113104193A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115556918A (en) * | 2022-11-01 | 2023-01-03 | 中国商用飞机有限责任公司 | Aircraft door pressurization prevention device |
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2021
- 2021-05-17 CN CN202110534991.1A patent/CN113104193A/en active Pending
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| WO2009092964A1 (en) * | 2008-01-21 | 2009-07-30 | Airbus France | Pressurised aircraft carrier with open air exposure flap |
| CN204937463U (en) * | 2015-08-14 | 2016-01-06 | 中国航空工业集团公司西安飞机设计研究所 | A kind of hatch door supercharging disease-prevention institutions |
| CN108349582A (en) * | 2015-11-03 | 2018-07-31 | 拉太柯艾尔 | Aircraft emergency exit door with integrated mechanism and method for opening/closing the exit door |
| CN105667757A (en) * | 2016-04-05 | 2016-06-15 | 中航沈飞民用飞机有限责任公司 | Double-bent-section and semi-blocking type cargo space door of civil airplane |
| CN106347627A (en) * | 2016-08-30 | 2017-01-25 | 中航沈飞民用飞机有限责任公司 | Multifunctional cabin door ventilation opening device controlled through cam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115556918A (en) * | 2022-11-01 | 2023-01-03 | 中国商用飞机有限责任公司 | Aircraft door pressurization prevention device |
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Application publication date: 20210713 |
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