CN113685101B

CN113685101B - A outer handle mechanism, emergent hatch door and aircraft for out-turning formula emergent hatch door

Info

Publication number: CN113685101B
Application number: CN202111025737.5A
Authority: CN
Inventors: 冯正玖; 朱铮铮; 颜晓峰; 唐行微; 朱彤; 丁鸿飞
Original assignee: Commercial Aircraft Corp of China Ltd
Current assignee: Commercial Aircraft Corp of China Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-06-10
Anticipated expiration: 2041-09-02
Also published as: CN113685101A

Abstract

The invention relates to an outer handle mechanism for an outwardly-turned emergency cabin door, an emergency cabin door and an aircraft. The outer handle mechanism includes: the handle main body is hinged with a locking shaft fixed on the cabin door main body; the driving crank is fixedly connected with the lock shaft; the crank locking hook is hinged with the handle main body and can be matched with and separated from the driving crank; a clutch rocker arm hinged to the handle body and hinged to the crank latch via a link, and applied with a load in an opening direction or a closing direction by the first elastic member to engage or disengage the crank latch with or from the drive crank via the link; and an open cover hinged to the handle main body independently of the clutch rocker and capable of switching between a closed state locked with a hatch-side locking hook provided to the hatch main body to restrict movement of the handle main body and an open state disengaged from the hatch-side locking hook to allow movement of the handle main body by rotating relative to the handle main body.

Description

A outer handle mechanism, emergent hatch door and aircraft for out-turning formula emergent hatch door

Technical Field

The invention relates to an outer handle mechanism for an outward-turning emergency cabin door, the emergency cabin door and an aircraft, and belongs to the field of aircraft mechanism design.

Background

The outward-turning emergency cabin door of the civil aircraft is used as an important exit for passengers to escape from the cabin under the emergency condition of the aircraft, and is necessary to design a safe and reliable outer handle mechanism which can not be in linkage relation with an inner handle on the premise of meeting the requirements of relevant terms in CCAR-25-R4 and ensuring that the outward-turning emergency cabin door can be normally opened and closed, the injury degree of the passengers is reduced to the maximum extent, the survival rate of the passengers is improved, and the outer handle mechanism is quite necessary.

Conventionally, as the external handle mechanism, there is an external handle mechanism disclosed in patent document CN106741833B (hereinafter referred to as "patent document 1"), for example, which includes: the crank lock hook mechanism comprises a driving crank and a crank lock hook; the secondary turnover plate changes the clutch state of the crank lock hook and the driving crank (the clutch state of the outer handle and the inner handle) through the connecting rod, the crank and the lug inserting connecting rod; and a primary flap for making the secondary flap into an integrally opened state capable of operating the above-mentioned separating and combining flaps.

Further, in the outer handle mechanism of patent document 1, the secondary flap is hinged to the primary flap, and the primary flap and the secondary flap are held at relatively fixed positions by a torsion spring at the hinged position; the secondary turning plate is connected with the main component of the outer handle by two extension springs; the primary turning plate is hinged on the main outer handle component and is kept in a relatively fixed position relation with the main outer handle component at the hinged position through two torsion springs.

Disclosure of Invention

Technical problem to be solved by the invention

However, the external handle mechanism of patent document 1 is complicated in structure, large in the number of parts, and difficult in processing and maintenance, especially in consideration of machining errors that may exist in practice and assembly accuracy required for aircraft parts. Further, the clutch mechanism driving part and the handle lock mechanism driving part of patent document 1 are hinged together by a spring, so that the difficulty of processing and maintenance is further increased.

In view of the above problems, the present invention provides an external handle mechanism for an outwardly-turned emergency hatch door, which can realize the opening and closing of the hatch door, can realize the clutch function of an internal handle and an external handle, has a handle locking function, is safe and reliable, and can reduce the design and processing difficulties. Furthermore, the invention also provides an emergency hatch door with the external handle mechanism and an aircraft with the emergency hatch door.

Technical scheme for solving technical problem

The present invention provides an external handle mechanism for an outwardly-turned emergency door, including: the handle main body is hinged with a locking shaft fixed on the cabin door main body; the driving crank is fixedly connected with the lock shaft; a crank latch hook hinged to the handle body and capable of engaging and disengaging with the driving crank; a clutch rocker arm hinged to the handle body and hinged to the crank latch via a link, and applied with a load in an opening direction or a closing direction by a first elastic member to engage or disengage the crank latch with or from the drive crank via the link; and an open cover hinged to the handle body independently of the clutch rocker and switchable by rotating relative to the handle body between a closed state locked with a hatch-side locking hook provided to the hatch body to restrict movement of the handle body and an open state disengaged from the hatch-side locking hook to allow movement of the handle body.

According to the outer handle mechanism for the outward-turning emergency cabin door, the clutch mechanism and the cover plate opening mechanism are completely independent, the design mode simplifies the outer handle mechanism and reduces the processing difficulty of parts.

The above-described external handle mechanism may be such that the opening cover is loaded by the second elastic member so as to always tend to restrict the movement of the handle main body.

According to the external handle mechanism with the structure, the second elastic component applies load to always enable the opening cover plate to tend to be closed, so that the cover plate is always closed when no person operates, the handle is always in a locking state, and the external handle is prevented from being overturned due to external force interference.

In the outer handle mechanism, the handle body may have a first through-hole penetrating the handle body, and at least a part of the open cover may be exposed to the outside of the handle body through the first through-hole.

According to the external handle mechanism having the above configuration, for example, the operator can easily put the open cover into the open state in which the movement of the handle main body is allowed against the load applied by the second elastic means, and can easily apply a force to the open cover from the outside of the handle main body to the inside thereof through the first through-hole.

The outer handle mechanism may be configured such that at least the rotation axis of the lock shaft, the rotation axis of the crank hook, the rotation axis of the clutch rocker arm, and the rotation axis of the release cover are parallel to each other.

In the external handle mechanism, the handle main body may include: a handle base; and two support portions extending from the handle base portion toward a first direction orthogonal to an axial direction of the lock shaft on a back side of the outer handle mechanism, extending in a second direction orthogonal to the axial direction and the first direction, and facing each other at intervals in the axial direction, wherein the open cover, the clutch rocker, the crank latch, and the lock shaft are arranged between the two support portions in the second direction in this order, and are hinged to the two support portions, respectively.

In the external handle mechanism, the handle body may have a second through-hole penetrating through the handle body, and a tip end portion of the clutch rocker may protrude to an outside of the handle body through the second through-hole by relative rotation of the clutch rocker and the handle body.

According to the outer handle mechanism having the above configuration, for example, the operator can easily move the crank lock hook and the drive crank together or apart from each other from the outside of the handle main body via the link or the like, and the dimension of the entire outer handle mechanism in the direction perpendicular to the axial direction of the lock shaft, for example, in the height direction of the outer handle mechanism can be reduced, thereby further compactly configuring the outer handle mechanism.

The outer handle mechanism may further include a first adjusting mechanism, and the first adjusting mechanism may adjust a relative position of the opening cover plate with respect to the door main body when the door-side lock hook is locked with the opening cover plate in a direction perpendicular to a rotation axis of the opening cover plate, so as to adjust the relative position of the handle main body with respect to the door main body.

According to the outer handle mechanism with the structure, the opening cover plate is matched with the side lock hook of the cabin door, and the locking and the step difference adjusting functions of the outer handle mechanism can be realized.

The first adjusting mechanism may include a locking hook flange and two first threaded members, the door-side locking hook has a first portion at a front end thereof, the first portion being locked with the opening cover plate, and a cylindrical second portion having a threaded outer peripheral surface at a base end thereof, the door-side locking hook is fixed to the door body via the locking hook flange, the locking hook flange is slidably fitted around the outer periphery of the second portion of the door-side locking hook, and the two first threaded members are respectively engaged with the threads formed on the outer peripheral surface of the second portion, and directly or indirectly abut against the locking hook flange from both sides thereof.

According to the external handle mechanism with the structure, the opening cover plate is matched with the cabin door side lock hook, the locking and the step adjusting functions of the external handle can be further reliably realized, and the increase of the processing difficulty of parts is inhibited. The cabin door side locking hook is in threaded connection with the cabin door main body, and the relative position of the opening cover plate relative to the cabin door main body can be adjusted by adjusting the cabin door side locking hook and the opening cover plate through the first threaded member and the like when the opening cover plate is locked, so that the step difference of the handle can be adjusted.

In the above-described outer handle mechanism, a lock hook bushing may be interposed between each of the two first screw members and the lock hook flange.

In the above-described external handle mechanism, the handle main body may have an abutment receiving portion that is directly or indirectly contactable with the drive crank in the circumferential direction of the lock shaft to support the drive crank, and the external handle mechanism may further include a second adjustment mechanism that adjusts a relative position of the abutment receiving portion when the abutment receiving portion is in abutment with the drive crank.

According to the outer handle mechanism of above-mentioned structure, the relative position when handle main part and drive crank butt can be adjusted by second adjustment mechanism, can make things convenient for outer handle mechanism and the regulation of lock axle rotation angle relation, reduces handle main part and drive crank's the processing degree of difficulty.

The external handle mechanism may further include: a hole portion penetrating the driving crank; and a screw which is screwed into the hole and can abut against the abutting receiving portion.

According to the external handle mechanism with the structure, the gap between the handle main body and the driving crank can be adjusted through the screw and the hole part, the adjustment of the rotating angle relation between the external handle and the lock shaft can be more reliably facilitated, and the increase of the processing difficulty of parts can be inhibited.

An emergency hatch according to an aspect of the present invention has any of the above-described external handle mechanisms.

An aircraft according to an aspect of the present invention includes the emergency hatch.

Effects of the invention

According to the outer handle mechanism of the turnover emergency hatch door, the emergency hatch door and the aircraft, the hatch door can be opened and closed, the clutch function of an inner handle and an outer handle can be realized, the outer handle mechanism has a handle locking function, and the outer handle mechanism meets the requirements of the CCAR-25-R4 item 25.783, such as the design field of airplane hatch doors. The clutch mechanism and the cover plate opening mechanism of the external handle mechanism are completely independent, the design mode simplifies the external handle mechanism, and the processing difficulty of parts is reduced.

Drawings

Figure 1a is a cross-sectional view schematically illustrating an outer handle mechanism for a hatchway hatch according to an embodiment of the invention, with the outer handle in an open position and the clutch mechanism in an "off" position.

Fig. 1b is a cross-sectional view schematically illustrating a latch hook structure of an outer handle mechanism for a flip-up emergency hatch according to an embodiment of the present invention.

Figure 2 is a cross-sectional view schematically illustrating an outer handle mechanism for a flip-up emergency hatch according to an embodiment of the invention, with the outer handle in an open state and the clutch mechanism in an "on" state.

Figure 3 is a perspective view showing the outer handle mechanism for the flip-up emergency hatch door in accordance with one embodiment of the present invention, with the outer handle in the closed position and the clutch mechanism in the "off" position.

Fig. 4 is a perspective view illustrating an opening cover mechanism of an outer handle mechanism for an outwardly-turned emergency hatch according to an embodiment of the present invention.

Fig. 5a is a perspective view illustrating a latch hook structure of an outer handle mechanism for a flip-up emergency hatch according to an embodiment of the present invention.

Fig. 5b is a cross-sectional view illustrating a latch hook structure of an outer handle mechanism for a flip-up emergency hatch according to an embodiment of the present invention.

Fig. 6 is a perspective view illustrating a clutch mechanism of an outer handle mechanism for an out-turned panic hatch according to an embodiment of the present invention.

Figure 7 is a door opening workflow incorporating an external handle mechanism for a flip-up emergency door in accordance with an embodiment of the present invention.

Fig. 8 is a door closing process for closing a door equipped with an external handle mechanism for a flip-up emergency door according to an embodiment of the present invention.

Fig. 9 schematically shows a view of the positional relationship of the second bush with the hook latch in a case where the second bush returns to the locked state after being disengaged from the hook latch in the axial direction of the embodiment.

(symbol description)

1a handle base;

1a first through-hole;

2, opening the cover plate;

3, a first pin shaft;

4 a torsion spring;

5a first bushing;

6 a second bushing;

7, a second pin shaft;

8, a latch hook;

9, locking hook flanges;

10 locking hook adjusting nuts;

11 locking the hook bushing of the hook,

12 crank latch hook;

13 connecting rods;

14 a third pin;

15 a tension spring;

16 a fourth pin;

17a clutch rocker arm;

18 drive the crank;

19 a screw;

20 lock shaft

Detailed Description

The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the invention.

Hereinafter, unless otherwise specified, the direction in which the axis of the lock shaft extends is simply referred to as "axial direction", the circumferential direction around the axial direction is simply referred to as "circumferential direction", the "inner side" of the outer handle mechanism indicates the direction from the outer handle mechanism toward the door when the outer handle mechanism is attached to the door, and the "outer side" of the outer handle mechanism indicates the direction from the outer handle mechanism away from the door when the outer handle mechanism is attached to the door.

Embodiment mode 1

Fig. 1a is a cross-sectional view schematically showing an outer handle mechanism (hereinafter, sometimes simply referred to as "outer handle") 100 for a flip-up emergency hatch according to embodiment 1 of the present invention, in which the outer handle is in an open state and the clutch mechanism C is in an "off" state. Fig. 3 is a perspective view showing the outer handle mechanism 100 for the flip-out emergency hatch door of the embodiment of the present invention, in which the outer handle is in a closed state and the clutch mechanism C is in an "off" state. As shown in figures 1a and 3, the external handle mainly comprises a handle main structure A, an opening cover plate structure B and a clutch mechanism C.

The handle main structure a includes a handle base 1 and two support portions 1 b. In the present embodiment, the handle base 1 is formed in a substantially plate shape that is long, and the longitudinal direction (second direction) of the handle base 1 is orthogonal or substantially orthogonal to the axial direction. The handle main structure A is hinged with a lock shaft 20 which is fixed on the cabin door main body and used for opening and closing the cabin door, and the lock shaft 20 is also a rotating shaft of the handle main structure A. The lock shaft 20 is mounted on the hatch body, for example by means of bearings, rotatably fixed to the hatch. That is, the handle main structure a and the lock shaft 20 can rotate relatively around the axis of the lock shaft 20. In this embodiment, the handle main structure a is hinged to the lock shaft 20 at one side in the longitudinal direction. Here, the "one side in the longitudinal direction" of the handle main structure a indicates a direction toward the lock shaft 20, and the "other side in the longitudinal direction" of the handle main structure a indicates a direction away from the lock shaft 20. The two support portions 1b extend from the handle base portion 1 toward the back side of the outer handle mechanism 100, for example, so as to project in a direction (first direction) orthogonal to the axial direction and the longitudinal direction, face each other, and face each other with a space in the axial direction. The two support portions 1b extend in the longitudinal direction, for example. The two support portions 1b are formed in the same structure, for example. The two support portions 1b are, for example, each extended in a direction orthogonal to the axial direction. The handle base 1 and the two support portions 1b correspond to a "handle main body" of the present invention.

The two support portions 1b each include a plurality of hinge points, and in the present embodiment, for example, a hinge point 12.1 to which a crank latch 12 described later is hinged, a hinge point 17.3 to which a clutch rocker 17 described later is hinged, and a hinge point to which a third pin 14 described later is hinged (see fig. 1a and 6). The two supporting parts 1b of the main handle structure a further include hinge points for hinging with an opening cover plate 2 to be described later. In the present embodiment, the handle main structure a is hinged to the lock shaft 20 at the two support portions 1 b. That is, the handle main structure a includes a hinge point with the lock shaft 20, a hinge point with the crank latch 12, a hinge point with the clutch rocker 17, and a hinge point with the opening cover 2. The hinge points are arranged in the longitudinal direction of the handle main structure A. In the present embodiment, the hinge joint between the handle main structure a and the open cover 2, the hinge joint between the handle main structure a and the clutch rocker 17, the hinge joint between the handle main structure a and the crank latch 12, and the hinge joint between the handle main structure a and the latch shaft 20 are arranged in this order in the longitudinal direction of the handle main structure a.

The handle main structure a further includes, between the two support portions 1b, an abutment receiving portion 1d (see fig. 2) projecting from the handle base 1 toward the inner side of the outer handle mechanism 100, for abutting against a receiving portion 18b described later.

The handle main structure a further includes a first through portion 1a (see fig. 2) for operating an opening cover 2 described later to unlock the external handle mechanism 100. The first through portion 1a is provided on the other longitudinal side of the handle base 1. In the present embodiment, the handle base 1 has a first through-hole portion, which penetrates the handle base 1 in the thickness direction, at a position corresponding to the opening lid 2 described later, and the operator can apply a force to the opening lid 2 through the first through-hole portion. As shown in fig. 3, the portion of the handle base 1 where the first through portion 1a is provided has a larger width dimension than, for example, the remaining portion of the handle base 1 (for example, the portion of the handle base 1 on the longitudinal direction side of the first through portion 1 a).

The handle main structure a further includes a second through portion 1c (see fig. 2) for passing a part of a clutch rocker 17 described later. In the present embodiment, the handle base 1 has a second through-hole 1c that penetrates the handle base 1 in the thickness direction at a position corresponding to a head portion 17a (see fig. 2) of a clutch rocker 17 described later.

Fig. 4 is a perspective view showing the opening flap mechanism B of the outer handle mechanism 100 for the hatchway hatch of the flip-out type according to embodiment 1 of the present invention. The cover plate opening mechanism B mainly includes an opening cover plate 2, a first pin 3, a first bushing 5 and a second elastic member 4. The first pin 3 is fixed to the opening cover 2. In the present embodiment, the opening lid 2 includes a flat plate-shaped main body portion 2a and two pin shaft fixing portions 2b extending from the main body portion 2a and facing each other. In the present embodiment, the two pin fixing portions 2b extend from one surface of the main body portion 2a in a direction perpendicular to or substantially perpendicular to the main body portion 2 a. The two pin shaft fixing portions 2b are opposed to each other at a space in the axial direction, for example. The pin fixing portion 2b may protrude from one surface of the body portion 2a in a direction intersecting the body portion 2 a. The two pin fixing portions 2b are formed in the same structure, for example. The first pins 3 are respectively fixed to the two pin fixing portions 2 b. Moreover, the first pin shaft 3 is hinged with the two supporting parts 1b of the main handle structure a respectively to form a hinged position where the main handle structure a is hinged with the opening cover plate 2. In the present embodiment, the first pin 3 is hinged to the handle main structure a via the two support portions 1b of the handle main structure a at the axial end portions of the first pin 3 that are closer to the two pin fixing portions 2b than the portions fixed to the two pin fixing portions. However, the first pin 3 may be hinged to the handle main structure a at a position farther from both axial ends than the position fixed to the pin fixing portion 2 b.

The first bush 5 is clearance-fitted with the first pin 3 at the radially outer side of the first pin 3. Outside the first bush 5, a second elastic member 4 is provided to engage with the first bush 5. The second elastic member 4 applies a load to the opening flap 2 in such a manner that the opening flap 2 is always urged to close. Here, "close" that "causes the opening cover 2 to tend to close" means that the opening cover 2 is returned to a position where it can lock (restrict the movement of the handle main body) the outer handle in cooperation with a latch hook structure D described later. The second elastic member 4 may be, for example, a tension spring, a compression spring, a torsion spring, or the like. In the present embodiment, the second elastic member 4 is, for example, a torsion spring, and is brought into close contact with or abutted against the handle base 1 by the biasing force of the torsion spring 4 as the second elastic member in the state where the openable lid 2 is closed. Further, for example, when the open cover 2 is not subjected to a load applied from the outside of the external handle mechanism (here, including a case where the load applied by the latch hook structure D described later is not applied), the open cover 2 is pressed by the biasing force of the torsion spring 4 and abuts against the handle base 1. Further, by the biasing force of the torsion spring 4, a part of the main body portion 2a of the opening cover 2 is fitted into the first through portion 1a of the handle main structure a so as to be located within the outer surface of the handle base 1 (the thickness of the main body portion 2a of the opening cover 2 overlaps with the thickness of the handle base 1 of the handle main structure a), for example, and the other part abuts against the inner surface of the handle base 1. In this case, the first through-hole 1a can be reinforced by further reducing the thickness of the outer handle mechanism 100. Here, the outer surface refers to the outer surface of the handle base 1, and the inner surface refers to the inner surface of the handle base 1.

The cover opening mechanism B also has a second pin 7 and a second bushing 6. The second bush 6 is clearance-fitted with the second pin 7 at the radially outer side of the second pin 7. The second pins 7 are respectively fixed to the two pin fixing portions 2 b. In the present embodiment, the second pin 7 is fixed to the pin fixing portion 2b at a position farther from the main body portion 2a than the first pin 3, for example.

The outer handle mechanism 100 also has a latch hook structure D (fig. 1B) that cooperates with the lid opening mechanism B to lock the outer handle mechanism 100. The latch hook structure D is mounted to the cabin door. The latch hook structure D includes a latch hook 8, and the latch hook 8 has a locking portion formed in a shape capable of locking the outer handle by being hooked on the second bush 6 of the opening cover mechanism B (for example, refer to the latch hook structure D in fig. 1B, and a dotted line indicates the second bush 6). That is, the second bush 6 is fitted with the latch hook 8, and the outer handle locking function can be achieved. The latch hook 8 corresponds to the hatch side latch hook of the present invention. In the present embodiment, as the handle body rotates relative to the lock shaft 20, the second bush 6 and the lock hook 8 relatively approach or separate from each other, for example, in a direction perpendicular to the axial direction. Accompanying this, the latch hook 8 is hooked to the second bush 6 or disengaged from the second bush 6, thereby locking or unlocking the outer handle. Further, the locking portion is recessed in a direction intersecting the axial direction (in the present embodiment, in a direction perpendicular to the axial direction) in a form fitting the extending direction of the second bush 6. In the present embodiment, the recessed portion of the locking portion faces one side in the longitudinal direction of the handle base 1. For example, in the case where the opening cover 2 is closed, the distance from the axis of the second bush 6 to the axis of the lock shaft 20 is equal to the distance from the center of the inside of the locking portion to the axis of the lock shaft 20. In the case where the opening lid plate 2 is subjected to an applied load from the outside of the outer handle mechanism toward the inside (here, including the case of being subjected to an applied load by the latch hook structure D), it moves in such a manner that the distance from the axis of the second bush 6 to the axis of the latch shaft 20 becomes smaller than the distance from the center of the inside of the lock portion to the axis of the latch shaft 20.

The latch hook 8 further has a cam portion at a front end portion than the locking portion for guiding the second bush 6 to the locking portion. In the present embodiment, the second bush 6 is guided to the locking portion by sliding along the edge of the cam portion of the locking hook 8. For example, in the case of an attempt to unlock the external handle, the opening cover 2 is pressed against the urging force of the second elastic member 4, thereby disengaging the second bush 6 from the locking portion of the latch hook 8 (allowing movement of the handle main body). In order to lock the outer handle from the unlocked state, the opening cover 2 itself moves along with the handle body in a state where the urging force of the second elastic member 4 acts, and can move by the action of the cam against the urging force of the second elastic member 4, so that the second bush 6 automatically enters the locking portion of the latch hook 8 (without additionally applying a load inward to the opening cover 2). In addition, it is also possible to automatically enter the second bush 6 into the locking portion of the locking hook 8 by applying a load to the opening cover 2 toward the inside. Fig. 9 schematically shows a diagram of embodiment 1 in which the positional relationship of the second bush 6 and the lock hook 8 is viewed in the axial direction in a case where the second bush 6 returns to the locked state by the edge of the cam portion after being disengaged from the lock hook 8, and circles C1 to C5 shown by broken lines indicate the position of the second bush 6. The case where the second bush 6 returns to the locked state by the edge of the cam portion after being disengaged from the latch hook 8 includes, for example, the outer handle closing process. As shown in fig. 9, the change of position from the circular shape C1 to the circular shape C3 shows, for example, the movement locus after the second bush 6 contacts the latch hook 8 during the closing of the outer handle. Next, the change of the position from the circular C3 to the circular C5 shows a trajectory of the second bush 6 locked by the torsion spring 4, for example, when the external handle is completely closed and no external load such as an operator's force is applied to the opening lid 2.

In the present embodiment, a part of the opening cover 2 is exposed to the outside through the first through-hole of the handle base 1. Thus, the operator can easily urge the lid opener 2 from the outside of the handle base 1 to the back side through the first through portion. That is, the second bush 6 locked by the lock hook 8 can be unlocked (disengaged) by biasing in a direction against the biasing force of the second elastic member 4, and the outer handle mechanism 100 can be unlocked. Here, the "back side" corresponds to the side of the handle base 1 on which the support portion 1b is provided. The "outer side" corresponds to the side opposite to the support portion of the handle base 1.

The lock shaft 20 is hinged with the handle main structure A. In the present embodiment, the lock shaft 20 and the handle main structure a are hinged to the two support portions 1b, and the lock shaft 20 and the support portions 1b (the handle main structure a) are rotatable relative to each other about the axis of the lock shaft 20. The external handle mechanism 100 also includes a drive crank 18 (sometimes referred to simply as "crank 18"). The drive crank 18 is fixedly connected to the lock shaft 20, i.e. the drive crank 18 can rotate together with the lock shaft 20. The drive crank 18 is attached to the lock shaft 20 externally at a location between the hinges of the lock shaft 20 with the two bearing portions 1 b. The drive crank 18 has a hooked portion 18a and a receiving portion 18b on both sides of the outer peripheral portion with the lock shaft 20 interposed therebetween. The hooked portion 18a is provided on a side close to a clutch mechanism C (the other side in the longitudinal direction of the handle main structure a) to be described later. When the outer handle mechanism 100 is viewed in the axial direction, the hooked portion 18a extends, for example, from the outer peripheral portion of the drive crank 18 in a direction toward the outside of the outer handle mechanism 100. The receiving portion 18b is provided on the side (the side in the longitudinal direction of the handle main structure a) away from the clutch mechanism C described later, and is detachably in contact with the contact receiving portion 1d of the handle main structure a, that is, the receiving portion 18b can be brought into contact with and separated from the contact receiving portion 1d by, for example, relative rotation of the lock shaft 20 and the support portion 1 b. In other words, the abutment receiving portion 1d is supported in a separable manner in a direction orthogonal to the axial direction, for example, in the circumferential direction of the lock shaft 20. For example, the drive crank 18 is allowed to rotate relative to the handle main structure a from a state where the receiving portion 18b abuts on the abutment receiving portion 1d toward a direction (counterclockwise in fig. 1 a) where the receiving portion 18b separates from the abutment receiving portion 1 d. Then, the driving crank 18 can be urged to rotate from the handle main structure a of the external handle mechanism 100 via the receiving portion 18b by the receiving portion 18b coming into contact with the contact receiving portion 1 d. For example, when the hatch door is closed and the outer handle is closed (locked), the receptacle 18b abuts the handle main structure a; when the cabin door is opened and the outer handle is closed (the outer handle is closed under the condition that the clutch is in an off state after the door is opened by the inner handle or the outer handle is opened by the outer handle), the bearing part 18b is not abutted with the handle main structure A; when the hatch door is opened and the external handle is opened (unlocked), the receiving portion 18b abuts against the handle main structure a.

Fig. 6 is a perspective view showing the clutch mechanism C of the outside handle mechanism 100 for the hatchdoor of the flip-out type according to embodiment 1 of the present invention. The clutch mechanism C mainly includes a clutch rocker 17, a fourth pin 16, a first elastic member 15, a third pin 14, a connecting rod 13, and a crank latch 12. The clutch mechanism C is disposed between the two support portions 1b of the handle main structure a. The crank latch 12 has a latch portion 12a that can be latched or engaged with a latched portion 18a of the drive crank 18, and is hinged to the handle main structure a (in fig. 6, a hinge portion 12.1). In the present embodiment, the crank lock hook 12 is hinged to the two support portions 1b of the handle main structure a. The crank lock hook 12 is hinged to the link 13 between the lock hook 12a and a portion hinged to the support portion 1 b. In the present embodiment, the crank latch 12 has a latch hook portion 12a at one end, and is hinged to the two support portions 1b at the other end by, for example, a pin shaft, and is hinged to the link 13 at a substantially middle portion (in fig. 6, a hinge position 13.1), as viewed in the axial direction. The crank latch 12 is driven by the link 13 to hook or engage the latch hook portion 12a to the hooked portion 18a or disengage from the hooked portion 18 a.

One end of the connecting rod 13 is hinged with the crank latch hook 12, and the other end is hinged with the clutch rocker arm 17 (in fig. 6, a hinged position 17.4). The clutch rocker 17 is also hinged to the two bearing portions 1b of the main handle structure a. In this way, the clutch rocker 17 can rotate relative to the handle main structure A. The clutch rocker 17 has a head portion 17a at one end portion (in the present embodiment, a tip end portion) and is hinged to the link 13 at the other end portion (in the present embodiment, a base end portion) as viewed in the axial direction. The clutch rocker 17 is hinged to the handle main structure a between a portion hinged to the link 13 and the head portion 17a (a hinge portion 17.3 in fig. 6). In the present embodiment, the head 17a has a flat surface 17.1 facing the outside of the outside handle mechanism 100, and the flat surface 17.1 is exposed to the outside of the outside handle mechanism 100 through the second through portion 1 c. By the relative rotation of the clutch rocker 17 and the handle main structure a, a part of the clutch rocker 17, for example, the head 17a can protrude outward of the handle main structure a through the second through portion 1 c. The head 17a also has a flat surface 17.5 facing the inside of the outer handle mechanism 100. The first elastic member 15 is hinged to the clutch rocker 17 and the two supporting portions 1b of the handle main structure a through a fourth pin 16 and a third pin 14, respectively. As shown in fig. 6, the clutch rocker arm 17 has, for example, a U-shaped main body. The two arms in the U are connected by a plane 17.5. The clutch rocker 17 is hinged to the link 13 at the front end of the two arms, and is hinged to the handle main structure a at the base end of the two arms. The head 17a extends from the bottom of the U-shape, and the head 17a extends from the bottom of the U-shape while curving toward the outside of the outer handle mechanism 100 as viewed in the axial direction. The first elastic member 15 is located axially inside the two arms of the U-shape, and the fourth pin shaft 16 is hinged to the other side of the U-shape in the longitudinal direction than the hinge 17.3. That is, the hinge point 17.2 of the fourth pin 16 and the clutch rocker 17 is located at the other side in the length direction than the hinge point 17.3. When viewed axially, the hinge point where the third pin 14 is hinged to the two support portions 1b of the main handle structure a is located further to the outside of the outer handle structure 100 than the hinge point 17.3, and is located further to the length direction side than the hinge point 17.3 in the length direction of the main handle structure a.

In this way, the crank catch 12 can be brought into or out of engagement with the drive crank 18, for example, by applying a force to the flat surfaces 17.5, 17.1. That is, by operating the clutch rocker 17, the crank latch 12 can be engaged with or disengaged from the drive crank 18 (the engagement or disengagement state of the crank latch 12 with or from the drive crank 18 is switched), and the clutch control of the inner and outer handles is realized. The first elastic member 15 applies a load to urge the clutch rocker 17 to close when the crank latch 12 is in a disengaged state from the driving crank 18, thereby keeping the crank latch 12 in a disengaged state from the driving crank 18, and the first elastic member 15 applies a load to urge the clutch rocker 17 to open when the crank latch 12 is in an engaged state with the driving crank 18, thereby keeping the crank latch 12 in an engaged state with the driving crank 18. Here, "close" that "causes the clutch rocker to tend to close" means that the clutch rocker 17 returns to a position where the crank hook 12 is kept away from the drive crank 18 and the flat surface 17.1 (the clutch rocker 17) and the outer surface of the handle base 1 ensure the aerodynamic shape of the body, including that the clutch rocker 17 is entirely located inside the outer surface of the handle base 1, for example, the flat surface 17.1 is flush with the outer surface of the handle base 1 (the handle main structure a). The "open" of "making the trip arm tend to open" means that the trip arm 17 is in a position where the crank hook 12 and the drive crank 18 are kept engaged and the plane 17.1 protrudes from the second through portion 1c of the handle base 1. The positions of the fourth pin 16, the first elastic member 15, and the third pin 14 may be changed according to circumstances, and for example, the hinge positions at which the first elastic member 15 is hinged to the clutch rocker 17 and the handle main structure a may be adjusted according to the different configurations of the handle main structure a and the clutch rocker 17. The first elastic member 15 may be, for example, a compression spring, a torsion spring, or the like. In the present embodiment, the first elastic member 15 is, for example, a tension spring, and the third pin 14 is hinged to the handle main structure a and connected to the tension spring 15 as the first elastic member; the fourth pin 16 is hinged with the clutch rocker 17 and connected with the tension spring 15.

In the present embodiment, each pin is disposed such that its axis is parallel to the axial direction of the lock shaft 20. That is, the rotational axis of the lock shaft 20, the rotational axis of the crank shackle 12, the rotational axis of the clutch rocker 17 and the rotational axis of the access cover 2 are parallel to each other. But not limited to the above-described structure, at least the rotational axis of the lock shaft 20, the rotational axis of the crank latch 12, and the rotational axis of the clutch rocker 17 may be parallel to each other.

(action of opening and closing the door equipped with the external handle mechanism)

Hereinafter, the operation of opening and closing the door to which the outside handle mechanism 100 for the flip-up emergency door according to embodiment 1 is mounted will be described. The hatch opening workflow is shown in fig. 7, and the hatch closing workflow is shown in fig. 8.

A cabin door opening step:

the inner handle opens the cabin door: when the inner handle opens the door, the lock shaft 20 rotates (in fig. 1a, the lock shaft 20 rotates counterclockwise relative to the handle main structure a), the crank 18 is driven to rotate along with the rotation, at this time, the outer handle clutch mechanism C is in a separated state, the outer handle is static, and the outer handle still keeps a closed state.

The outer handle opens the cabin door: the torsion spring 4 applies load to enable the opening cover plate 2 to tend to be closed all the time, fingers press the opening cover plate 2 to open the opening cover plate 2, the second bushing 6 is automatically separated from the locking hook 8 after the opening cover plate 2 is opened, and the outer handle is unlocked. The external handle is pulled, the handle main structure A rotates, the handle main structure A drives the driving crank 18 to rotate, the driving crank 18 drives the lock shaft 20 to rotate (in fig. 1a, the lock shaft 20 rotates towards the anticlockwise direction relative to the handle main structure A), the cabin door rotates along with the lock shaft 20 to be unlocked, and the cabin door is opened.

A cabin door closing step:

outer handle closes hatch (outer handle unlocked): the upper plane 17.5 of the clutch rocker 17 is pressed by fingers, the clutch rocker 17 rotates and drives the crank lock hook 12 to be matched with the driving crank 18 through the connecting rod 13, at the moment, the handle main structure A is rotated, the handle main structure A drives the crank lock hook 12 to rotate, the crank lock hook 12 drives the driving crank 18 to rotate, and the driving crank 18 drives the lock shaft 20 to rotate (in the figure 2, the lock shaft 20 rotates clockwise relative to the handle main structure A). When the handle main structure A is rotated, the second bushing 6 slowly rotates under the action of the cam part on the lock hook 8 until the second bushing is matched with the hook groove on the lock hook 8, the outer handle is locked, the clutch rocker arm 17 still protrudes from the handle main structure A after the outer handle is locked, the protruding plane 17.1 on the clutch rocker arm 17 is pressed, the clutch rocker arm 17 rotates and drives the crank lock hook 12 to be separated from the driving crank 18, the clutch rocker arm 17 enters the handle main structure A, the plane 17.1 is flush with the handle main structure A, the outer handle is closed, and the cabin door is closed.

When the outer handle is closed, the opening cover plate 2 is kept at the closing position through the torsion spring 4, and the clutch rocker arm 17 is kept at the closing position through the tension spring 15, so that the pneumatic appearance of the machine body is ensured.

If the cabin door is opened by the inner handle and the outer handle is in a closed state, the opening cover plate 2 needs to be pressed by fingers at the moment, the opening cover plate 2 is opened, the second lining 6 is automatically separated from the locking hook 8 after the opening cover plate 2 is opened, and the outer handle is unlocked. And pulling the outer handle, rotating the handle main structure A, opening the outer handle, and then executing the step of closing the cabin door.

According to the outer handle mechanism 100 for the outwardly-turned emergency hatch door in the embodiment 1, the clutch mechanism C and the cover plate opening mechanism B are completely independent, the design mode simplifies the outer handle mechanism, and the processing difficulty of parts is reduced. The torsion spring applies load to enable the cover plate to tend to be closed all the time, the cover plate is guaranteed to be closed all the time when no person operates, and the handle is always in a locking state, so that the outer handle is prevented from being overturned due to external force interference.

(embodiment mode 2)

The prior art of the external handle of the external turning type emergency cabin door comprises an external handle mechanism of an airbus series airplane, a bombardier C series airplane and the like, the step difference of the handle is difficult to adjust, and the design and processing difficulty is further increased.

In contrast, since the external handle mechanism according to embodiment 2 of the present invention further has a handle step adjustment function and the other configuration is the same as that of embodiment 1, the same reference numerals are assigned to the same configurations as those of embodiment 1, and redundant description thereof is omitted.

Fig. 5a and 5b show a schematic structure of a latch hook structure D of an outer handle mechanism for a flip-up emergency door according to embodiment 2 of the present invention. The shackle structure D comprises a shackle 8, a shackle flange 9, two shackle adjusting nuts (first threaded members) 10 and two shackle bushings 11.

The latch hook 8 has a first portion including a locking portion at a front end and a cylindrical second portion at a base end. Two latch hook adjusting nuts 10 are respectively screw-coupled to the outer circumferential surfaces of the second portions of the latch hooks 8. The latch hook flange 9 is slidably nested around the periphery of the latch hook 8. Two shackle adjusting nuts 10 are respectively adjacently disposed on both sides of the shackle flange 9 via shackle bushes 11. The locking hook structure D is fixed on the cabin door main body structure through a locking hook flange 9. In detail, the second portion of the locking hook 8 has an external thread on the outer circumferential surface, and the two locking hook adjusting nuts 10 are respectively provided with hole portions having internal threads on the inner circumferential surface and open at both ends. The shackle flange 9 comprises a cylindrical shackle flange body 9 a. The front end of the latch hook flange main body 9a is provided with a fixing portion 9b expanding radially outward from the outer peripheral surface. For example, the fixing portion 9b is provided with hole portions through which the latch hook structure D is fixed to the hatch door main body. The fixing portion 9b is, for example, a rounded triangle when viewed in the axial direction of the latch hook flange 9 (latch hook flange main body 9a), but may have another shape that can be fixed to the door main body. That is, the latch hook structure D is mounted to the hatch body at the fixing portion 9 b. The position of the latch hook 8 is adjusted by screwing the latch hook adjusting nut 10, which is screw-engaged with the closer front end of the latch hook 8, of the two latch hook adjusting nuts 10. For example, the outer handle step difference in the outer handle closed state is controlled by the locking hook 8, and the locking hook 8 is adjusted by the locking hook adjusting nut 10, so that the outer handle step difference can be controlled. The shackle flange 9 and the two shackle adjustment nuts 10 are each a component of the first adjustment mechanism of the present invention.

According to the outer handle mechanism for the outward-turning emergency cabin door in the embodiment, the second lining 6 in the cover plate opening mechanism B is matched with the latch hook 8 on the door body (a cabin door main body) to realize the locking and the step difference adjusting functions of the outer handle, the latch hook 8 is fixed on the door body structure through the latch hook flange 9, when the cover plate 2 is opened and closed, the second lining 6 is matched with the latch hook 8, the handle is in a locking state, when the cover plate is opened, the second lining 6 is separated from the latch hook 8, the outer handle is in an unlocking state, the cabin door can be opened through the outer handle at the moment, the latch hook 8 is in threaded connection with the door body main structure, the position of the latch hook 8 relative to the door body can be adjusted through the latch hook adjusting nut 10, the relative position of the cover plate 2 relative to the door body is opened when the second lining 6 is matched with the latch hook 8, and therefore the adjustment of the step difference of the handle is realized.

(embodiment mode 3)

The prior art of the outer handle of the outward turning type emergency cabin door comprises an outer handle mechanism of aircrafts in airbus series and C series, and the like, the relationship between the outer handle and the rotation angle of the lock shaft is difficult to adjust, and the design and processing difficulty is further increased.

In contrast, since the outer handle mechanism according to embodiment 3 of the present invention further has an outer handle and lock shaft rotation angle adjustment function, and the other configurations are the same as those of embodiment 1, the same reference numerals are given to the same configurations as those of embodiment 1, and redundant description thereof is omitted.

In the present embodiment, there is a drive crank mechanism including a drive crank 18 and a screw 19 (see fig. 2). The receiving portion 18b of the drive crank 18 has a hole portion 18b1 opened at both ends. That is, the socket 18b has a hole 18b1 that penetrates the socket 18 b. The inner circumferential surface of the hole of the receiving portion 18b is provided with female threads. Screw 19 is screwed into hole 18b 1. The screw 19 is provided with a cylindrical male screw portion having a male screw on an outer peripheral surface. One end of the screw 19 has a head portion having a larger diameter than the male screw portion. In a state where the screw 19 is disengaged from the drive crank 18, the drive crank 18 is brought into contact with the contact receiving portion 1d of the handle main structure a via the head of the screw 19. That is, the drive crank 18 abuts on the abutment receiving portion 1d via the screw 19. A nut (second screw member) 21 provided with a hole portion having a female screw on the inner peripheral surface and open at both ends is screwed to the outer peripheral surface of the screw 19 adjacent to the hole portion 18b 1. Further, a bush may be interposed between nut 21 and hole portion 18b 1. By screwing the screw 19 and the nut 21, the position of the screw 19 is adjusted. For example, when the outer handle opens the cabin door, the handle main structure a drives the lock shaft 20 to rotate through the driving crank 18, and the relative position of the handle main structure a when the handle main structure a is abutted to the driving crank 18 can be adjusted through the screw 19. Hole portion 18b1 and adjustment screw 19 are members that constitute the second adjustment mechanism of the present invention, respectively.

According to the outer handle mechanism for the turnover emergency hatch door, the driving crank mechanism comprises the driving crank 18 and the screw 19, the driving crank 18 is fixedly connected with the lock shaft 20, when the hatch door is opened through the outer handle, the handle main structure A rotates to drive the driving crank 18 to rotate, and the lock shaft 20 rotates along with the driving crank. The clearance between the handle main structure A and the driving crank 18 can be adjusted by a screw 19, the design of the screw can facilitate the adjustment of the rotating angle relation between the outer handle and the lock shaft, and the processing difficulty of the handle main structure A and the driving crank 18 is reduced. When the outer handle closes the cabin door, the handle main structure A drives the driving crank to rotate through the crank locking hook, and the locking shaft 20 rotates along with the driving crank.

The embodiments of the present invention have been described above, but the scope of the present invention is not limited thereto, and various modifications can be added within a scope not departing from the gist of the present invention. The embodiments and modifications thereof can be arbitrarily combined as appropriate.

For example, in embodiments 1 to 3, the main body 2a of the opening cover 2 is formed in a flat plate shape, which facilitates the operator to apply force. However, the main body of the opening lid 2 is not necessarily flat, and may have any shape as long as the operator can push the opening lid through the first through-hole, for example. The same is true of the flat surfaces 17.1, 17.5 of the head 17a of the clutch rocker 17.

The invention can be used, for example, in aircraft such as civil aircraft comprising a fold-out emergency hatch.

Claims

1. An external handle mechanism for an outward-turning emergency cabin door is characterized in that,

the outer handle mechanism includes:

a handle body hinged to a locking shaft fixed to the hatch door body;

the driving crank is fixedly connected with the lock shaft;

a crank latch hook hinged to the handle body and capable of engaging and disengaging with the drive crank;

a clutch rocker arm hinged to the handle body and hinged to the crank latch via a link, and applied with a load in an opening direction or a closing direction by a first elastic member to engage or disengage the crank latch with or from the drive crank via the link; and

an open cover hinged to the handle body independently of the clutch rocker and switchable by rotation relative to the handle body between a closed state locked with a hatch-side locking hook provided to the hatch body to restrict movement of the handle body and an open state disengaged from the hatch-side locking hook to allow movement of the handle body,

the handle body has an abutment receiving portion that can directly or indirectly abut against the drive crank in the circumferential direction of the lock shaft to support the drive crank.

2. The external handle mechanism according to claim 1,

the opening cover is loaded by the second elastic member to always tend to restrict the movement of the handle main body.

3. The external handle mechanism according to claim 2,

the handle body has a first through-hole penetrating the handle body, and at least a part of the open cover is exposed to the outside of the handle body through the first through-hole.

4. The external handle mechanism according to claim 1,

at least the rotation axis of the lock shaft, the rotation axis of the crank catch, the rotation axis of the clutch rocker arm and the rotation axis of the opener lid are parallel to each other.

5. The external handle mechanism according to claim 4,

the handle main body has: a handle base; and two support portions extending from the handle base portion toward a first direction orthogonal to an axial direction of the lock shaft on a back side of the outer handle mechanism, extending in a second direction orthogonal to the axial direction and the first direction, and facing each other with a space in the axial direction,

the opening cover plate, the clutch rocker arm, the crank latch hook and the latch shaft are sequentially arranged between the two supporting parts along the second direction and are respectively hinged with the two supporting parts.

6. The external handle mechanism according to claim 1,

the outer handle mechanism further comprises a first adjusting mechanism which can adjust the relative position of the opening cover plate relative to the cabin door main body when the cabin door side locking hook is locked with the opening cover plate in a direction perpendicular to the rotation axis of the opening cover plate, so that the relative position of the handle main body relative to the cabin door main body can be adjusted.

7. The external handle mechanism according to claim 6,

the first adjustment mechanism includes a shackle flange and two first threaded members,

the hatch door side locking hook has a first portion at a front end thereof for locking with the opening cover plate and a cylindrical second portion at a base end thereof having a screw thread formed on an outer circumferential surface thereof,

the hatch door-side locking hook is fixed to the hatch door main body via the locking hook flange,

the lock hook flange is slidably nested on the periphery of the second part of the door-side lock hook, and the two first threaded members are respectively combined with threads formed on the periphery of the second part and are directly or indirectly abutted against the lock hook flange from two sides.

8. The external handle mechanism according to claim 7,

and a locking hook bushing is respectively clamped between the two first threaded members and the locking hook flange.

9. The external handle mechanism according to claim 1,

the outer handle mechanism further includes a second adjustment mechanism that adjusts a relative position of the abutment receiving portion and the drive crank when the abutment receiving portion and the drive crank are in abutment.

10. The external handle mechanism according to claim 9,

the second adjustment mechanism includes:

a hole portion penetrating the driving crank; and

and a screw which is screwed into the hole and can be brought into contact with the contact receiving portion.

11. The external handle mechanism according to claim 1,

the handle body has a second through-hole penetrating through the handle body, and the front end of the clutch rocker protrudes to the outside of the handle body through the second through-hole by relative rotation of the clutch rocker and the handle body.

12. An emergency cabin door is characterized in that,

having an external handle mechanism as claimed in any one of claims 1 to 11.

13. An aircraft is characterized in that the aircraft is provided with a plurality of air ducts,

an emergency door as claimed in claim 12.