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

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

Outer handle mechanism for everted emergency hatch, emergency hatch and aircraft

technical field

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

Background technique

As an important exit for passengers in the passenger cabin to escape in the event of an aircraft emergency, the everted emergency hatch of civil aircraft, on the premise of meeting the requirements of the relevant clauses in CCAR-25-R4, in order to ensure that the everted emergency hatch can be opened and closed normally. It is necessary to design a safe and reliable outer handle mechanism that can be unlinked with the inner handle to minimize the injury degree of passengers and improve the survival rate of personnel.

At present, as the above-mentioned outer handle mechanism, for example, there is an outer handle mechanism disclosed in Patent Document CN106741833B (hereinafter referred to as "Patent Document 1"), which has a crank lock hook mechanism including a driving crank and a crank lock hook; A secondary flap for changing the clutch state of the crank lock hook and the drive crank (the clutch state of the outer handle and the inner handle); and the flap for making the secondary flap to be able to operate the above-mentioned clutch and clutch and open as a whole The primary flipper of the state.

In addition, in the outer handle mechanism of Patent Document 1, the secondary flap and the primary flap are hinged, and at the hinged position, the primary flap and the secondary flap are kept relatively fixed by a torsion spring; The handle main structure is connected by two tension springs; the primary flap is hinged on the outer handle main structure, and maintains a relatively fixed positional relationship with the outer handle main structure through two torsion springs at the hinged position.

SUMMARY OF THE INVENTION

The technical problem to be solved by the invention

However, especially considering the possible machining errors in practice and the assembly accuracy required for aircraft components, the outer handle mechanism of Patent Document 1 has a complex structure, a large number of components, and is difficult to process and maintain. Furthermore, the clutch mechanism driving part and the handle locking mechanism driving part of Patent Document 1 are hinged together by a spring, which further increases the difficulty of processing and maintenance.

In view of the above problems, the present invention provides an outer handle mechanism for an eversion-type emergency cabin door, which can realize the opening and closing of the cabin door, realize the clutch function of the inner and outer handles, has the handle locking function, is safe and reliable, and can reduce the Design and processing difficulty. In addition, the present invention also provides an emergency hatch having the above-mentioned outer handle mechanism and an aircraft having the emergency hatch.

Technical solutions adopted to solve technical problems

An outer handle mechanism for an eversion-type emergency hatch according to one aspect of the present invention includes: a handle body, which is hinged to a lock shaft fixed to the hatch body; a drive crank, which is fixed to the lock shaft A crank lock hook, which is hinged with the handle body, and can be engaged with and separated from the drive crank; a clutch rocker arm, which is hinged with the handle body and connected to the handle body via a connecting rod. The crank lock hook is hinged, and a load in the opening direction or the closing direction is applied by the first elastic member to make the crank lock hook engage or separate from the driving crank via a connecting rod; and an opening cover plate is independent of the clutch. The rocker arm is hingedly connected to the handle body, and can be locked with a door-side latch provided on the door body by being rotated relative to the handle body to limit the movement of the handle body in a closed state and with the door The side lock hooks are disengaged to allow movement of the handle body to switch between open states.

According to one aspect of the present invention, the outer handle mechanism for the eversion-type emergency hatch is completely independent of the clutch mechanism and the cover opening mechanism. This design method simplifies the outer handle mechanism and reduces the processing difficulty of the parts.

In the above-mentioned outer handle mechanism, the opening cover plate may always tend to restrict the movement of the handle body by being loaded by the second elastic member.

According to the outer handle mechanism of the above structure, the second elastic member always exerts a load to make the opening cover tend to be closed, ensuring that the cover is always closed and the handle is always in a locked state when there is no human operation, thereby preventing the outer handle from turning over due to external force interference.

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

According to the outer handle mechanism of the above structure, for example, the operator can easily oppose the applied load of the second elastic mechanism to bring the opening cover into the open state that allows the movement of the handle body, for example, can easily pass the first handle from the outside of the handle body. The penetration portion urges the opening cover inward.

The above-mentioned outer handle mechanism may also be such that among the rotation axis of the lock shaft, the rotation axis of the crank lock hook, the rotation axis of the clutch rocker arm and the rotation axis of the cover opening, at least the rotation axis of the lock shaft is The rotation axis, the rotation axis of the crank lock hook and the rotation axis of the clutch rocker arm are parallel to each other.

In the above-mentioned outer handle mechanism, the handle main body may have: a handle base; and two support parts that extend from the handle base to an axis with the lock shaft on the rear side of the outer handle mechanism. extend in a first orthogonal direction, expand in a second direction orthogonal to the axial direction and the first direction, and are opposite to each other at an interval in the axial direction, the opening cover plate, the clutch rocker The arm, the crank lock hook and the lock shaft are arranged in sequence along the second direction between the two support parts, and are respectively hinged with the two support parts.

The outer handle mechanism may also be such that the handle body has a second penetration portion penetrating the handle body, and the front end portion of the clutch rocker arm passes through the handle body through the relative rotation of the clutch rocker arm and the handle body. The second penetration portion protrudes to the outside of the handle body.

According to the outer handle mechanism of the above structure, for example, the operator can easily make the crank lock hook engage or separate from the drive crank via the above-mentioned connecting rod or the like from the outside of the handle main body, and at the same time, it is possible to reduce the overall operation of the outer handle mechanism perpendicular to the lock shaft. The dimension in the axial direction of the outer handle mechanism, for example, the height direction of the outer handle mechanism, makes the outer handle mechanism more compact.

The above-mentioned outer handle mechanism may also be that, the outer handle mechanism further includes a first adjustment mechanism, and the first adjustment mechanism can adjust the door side lock hook and the open door in a direction perpendicular to the rotation axis of the opening cover plate. When the cover plate is locked, the relative position of the open cover plate relative to the cabin door body is adjusted, so as to realize the adjustment of the relative position of the handle main body relative to the cabin door main body.

According to the outer handle mechanism of the above structure, the opening cover is matched with the side lock hook of the cabin door, so that the locking and step adjustment functions of the outer handle mechanism can be realized.

The above-mentioned outer handle mechanism may also be that, the first adjustment mechanism includes a lock hook flange and two first threaded members, and the hatch side lock hook has a first part at the front end that is locked with the open cover plate, The base end has a cylindrical second portion whose outer peripheral surface is threaded, and the door-side lock hook is fixed to the door body via the lock hook flange slidably nested in the lock hook flange. On the outer circumference of the second part of the door-side lock hook, the two first threaded members are respectively combined with the threads formed on the outer circumference of the second part, and are directly or indirectly connected to the lock from both sides. Hook flange abuts.

According to the outer handle mechanism of the above structure, the opening cover is matched with the door side lock hook, the locking and step adjustment functions of the outer handle can be further reliably realized and the increase in the processing difficulty of the parts can be suppressed. The side lock hook of the cabin door and the main body of the cabin door are connected by threaded connection, and the relative position of the open cover plate relative to the main body of the cabin door when the lock hook of the cabin door side and the open cover plate can be adjusted through the above-mentioned first threaded member, etc. Make adjustments.

In the above-mentioned outer handle mechanism, a lock hook bushing may be sandwiched between the two first threaded members and the lock hook flange, respectively.

In the above-mentioned outer handle mechanism, the handle body may have an abutment receiving portion capable of directly or indirectly abutting with the drive crank in the circumferential direction of the lock shaft to support the drive crank, and the outer handle may The mechanism further includes a second adjustment mechanism that adjusts the relative position of the abutment receiving portion and the drive crank when they are in abutment.

According to the outer handle mechanism of the above structure, the relative position of the handle body and the driving crank can be adjusted by the second adjusting mechanism, which can facilitate the adjustment of the rotation angle relationship between the outer handle mechanism and the lock shaft, and reduce the processing difficulty of the handle body and the driving crank.

In the above-mentioned outer handle mechanism, the second adjustment mechanism may include: a hole portion penetrating the drive crank; and a screw threadedly coupled with the hole portion and capable of abutting with the abutment receiving portion.

According to the outer handle mechanism of the above structure, the clearance between the handle main body and the driving crank can be adjusted through the screw and the hole, which can further reliably facilitate the adjustment of the rotational angle relationship between the outer handle and the lock shaft and restrain the increase in machining difficulty of the parts.

An emergency hatch according to one aspect of the present invention has any one of the above-mentioned outside handle mechanisms.

An aircraft according to one aspect of the present invention has the above-mentioned emergency hatch.

Invention effect

The outer handle mechanism of the everted emergency cabin door, the emergency cabin door and the aircraft according to the present invention can realize the opening and closing of the cabin door, realize the clutch function of the inner and outer handles, and have the handle locking function, and the outer handle mechanism conforms to the CCAR- 25-R4 Section 25.783, for example, in the field of aircraft door mechanism design. The clutch mechanism of the outer handle mechanism of the present invention is completely independent from the cover opening mechanism, and the design method simplifies the outer handle mechanism and reduces the processing difficulty of the parts.

Description of drawings

Fig. 1a is a cross-sectional view schematically showing an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention, in which the outer handle is in an open state and the clutch mechanism is in a "disengaged" state.

Fig. 1b is a cross-sectional view schematically showing a lock hook structure of an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view schematically showing an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention, in which the outer handle is in an open state and the clutch mechanism is in a "closed" state.

3 is a perspective view showing an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention, in which the outer handle is in a closed state and the clutch mechanism is in a “disengaged” state.

4 is a perspective view showing a cover opening mechanism of an outer handle mechanism for an eversion-type emergency hatch according to an embodiment of the present invention.

Fig. 5a is a perspective view showing a lock hook structure of an outer handle mechanism for an eversion-type emergency hatch according to an embodiment of the present invention.

Fig. 5b is a cross-sectional view showing a lock hook structure of an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention.

6 is a perspective view showing a clutch mechanism of an outer handle mechanism for an eversion-type emergency hatch according to an embodiment of the present invention.

FIG. 7 is a working flow of opening a hatch equipped with an outer handle mechanism for an everted emergency hatch according to an embodiment of the present invention.

FIG. 8 is a process of closing the hatch provided with the outer handle mechanism for the eversion-type emergency hatch according to an embodiment of the present invention.

FIG. 9 is a diagram schematically showing the positional relationship between the second bushing and the locking hook when the second bushing returns to the locked state after being disengaged from the locking hook in an axial direction according to an embodiment.

(Symbol Description)

1 handle base;

1a the first penetration part;

2 Open the cover;

3 The first pin;

4 torsion springs;

5 first bushing;

6 second bushing;

7 The second pin;

8 lock hooks;

9 locking hook flange;

10 lock hook adjustment nut;

11 shackle bushing,

12 crank lock hook;

13 connecting rods;

14 The third pin;

15 tension spring;

16 fourth pin;

17 clutch rocker arm;

18 drive crank;

19 screws;

20 lock shaft

Detailed ways

The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention, but it is obvious that the present invention can be implemented in many other ways that are different from those described herein. Those skilled in the art can make similar promotion and deduction according to the actual application situation without violating the connotation of the present invention, so the content of this specific embodiment should not limit the protection scope of the present invention.

Hereinafter, unless otherwise specified, the direction in which the axis of the lock shaft extends is referred to as "axial direction", and the circumferential direction around the axial direction is referred to as "circumferential direction". The direction from the outer handle mechanism to the cabin door when the cabin door is used, and the "outside" of the outer handle mechanism means the direction from the outer handle mechanism to leave the cabin door when the outer handle mechanism is installed on the cabin door.

Embodiment 1

1a is a cross-sectional view schematically illustrating an outer handle mechanism (hereinafter, sometimes referred to as “outer handle”) 100 for an everted 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 open state. "away" state. FIG. 3 is a perspective view showing an outer handle mechanism 100 for an everted emergency hatch according to an embodiment of the present invention, in which the outer handle is in a closed state and the clutch mechanism C is in a “disengaged” state. As shown in Figures 1a and 3, the outer handle mainly includes a handle main structure A, a cover opening mechanism B and a clutch mechanism C.

The handle main structure A includes a handle base 1 and two support portions 1b. In the present embodiment, the handle base 1 is formed in a substantially longitudinally long plate shape, 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 fixed on the main body of the cabin door and used for opening and closing the cabin door. The lock shaft 20 is also the rotation shaft of the handle main structure A. The lock shaft 20 is attached to the door body through a bearing, for example, and is rotatably fixed to the door. 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 with the lock shaft 20 on one side in the longitudinal direction. Here, the “longitudinal side” of the handle main structure A refers to the direction toward the lock shaft 20 , and the “longitudinal side” of the handle main structure A refers to the direction away from the lock axis 20 . The two support portions 1b respectively extend from the handle base 1 to the inner side of the handle mechanism 100, for example, in a direction (first direction) orthogonal to the axial direction and the above-mentioned longitudinal direction, and face each other and are spaced apart in the axial direction. Relatively spaced. The two support parts 1b are each extended in the above-mentioned longitudinal direction, for example. The two support parts 1b are formed to have the same structure, for example. Each of the two support portions 1b extends in a direction orthogonal to the axial direction, for example. The handle base 1 and the two support parts 1b correspond to the "handle body" of the present invention.

The two supporting parts 1b respectively include a plurality of hinge positions. In this embodiment, for example, they include a hinge position 12.1 hinged with the crank lock hook 12 described later, a hinge position 17.3 hinged with the clutch rocker arm 17 described later, and a third hinge position with the later described third. The hinge position where the pin 14 is hinged (see Figure 1a and Figure 6). The two support parts 1b of the handle main structure A also include hinge positions hinged with the opening cover 2 to be described later. In addition, in this embodiment, the handle main structure A is hinged to the lock shaft 20 on the two support portions 1b. That is, the handle main structure A includes a hinge position hinged with the lock shaft 20 , a hinge position hinged with the crank lock hook 12 , a hinge position hinged with the clutch rocker arm 17 , and a hinge position hinged with the opening cover 2 . Each hinge position is arranged in the longitudinal direction of the handle main structure A. In this embodiment, the hinge position where the handle main structure A is hinged with the opening cover 2 , the hinge position where the handle main structure A is hinged with the clutch rocker arm 17 , the hinge position where the handle main structure A is hinged with the crank lock hook 12 , the handle The sequence of the hinge positions where the main structure A is hinged with the lock shaft 20 is arranged in the longitudinal direction of the handle main structure A.

The handle main structure A further includes an abutment receiving portion 1d (see FIG. 2 ) protruding from the handle base 1 to the inner side of the handle mechanism 100 between the two support portions 1b for abutting with the below-described receiving portion 18b.

The handle main structure A further includes a first through portion 1a (see FIG. 2 ) for operating the opening cover 2 described later to unlock the outer handle mechanism 100 . The first through portion 1 a is provided on the other side in the longitudinal direction of the handle base 1 . In the present embodiment, the handle base 1 has a first penetration portion at a position corresponding to the opening cover 2 described later, the first penetration portion penetrates the handle base 1 in the thickness direction, and the operator can pass through the first penetration portion Apply force to the opening cover 2. As shown in FIG. 3 , the widthwise dimension of the portion of the handle base 1 where the first penetration portion 1a is provided is, for example, larger than the remaining portion of the handle base 1 (for example, the portion of the handle base 1 that is closer to the longitudinal direction side than the first penetration portion 1a ). ).

The handle main structure A further includes a second penetration portion 1c (see FIG. 2 ) for passing a part of the clutch rocker arm 17 to be described later. In the present embodiment, the handle base 1 has a second penetration portion 1c at a position corresponding to the head portion 17a (see FIG. 2 ) of the clutch rocker arm 17 described later, and the second penetration portion penetrates the handle base in the thickness direction. 1.

FIG. 4 is a perspective view showing a cover opening mechanism B of the outer handle mechanism 100 for an eversion-type emergency hatch according to Embodiment 1 of the present invention. The cover opening mechanism B mainly includes the opening cover 2 , the first pin 3 , the first bushing 5 and the second elastic member 4 . The first pin 3 is fixed to the opening cover 2 . In this embodiment, the opening cover 2 has a flat 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 shaft fixing portions 2b protrude in a direction orthogonal or substantially to the main body portion 2a from one surface of the main body portion 2a. The two pin shaft fixing portions 2b are opposed to each other at a distance in the axial direction, for example. However, the structure is not limited to the above, and the pin shaft fixing portion 2b may protrude in a direction intersecting with the main body portion 2a from the surface of one side of the main body portion 2a. The two pin shaft fixing portions 2b are formed to have the same structure, for example. The first pin shafts 3 are respectively penetrated and fixed to the two pin shaft fixing portions 2b. Moreover, the first pin shaft 3 is hinged with the two supporting parts 1b of the handle main structure A, respectively, to form a hinge position where the handle main structure A is hinged with the opening cover 2 . In this embodiment, the first pin shaft 3 is connected to the two supporting parts 1b of the handle main structure A via the two support parts 1b of the handle main structure A at the two axial ends of the first pin shaft 3 than the parts fixed to the two pin shaft fixing parts 2b. The handle main structure A is hinged. However, the first pin shaft 3 may be hinged to the handle main structure A at a position farther from the axial end portion than the portion fixed to the pin shaft fixing portion 2b.

The first bushing 5 is in clearance fit with the first pin shaft 3 at the radial outer side of the first pin shaft 3 . On the outer side of the first bushing 5 , a second elastic member 4 that cooperates with the first bushing 5 is provided. The second elastic member 4 applies a load to the opening cover 2 in such a manner that the opening cover 2 tends to be always closed. Here, "closed" in "tends the opening cover 2 to close" means that the opening cover 2 returns to the position where the outer handle can be locked (the movement of the handle body is restricted) in cooperation with the lock hook structure D described later. For the second elastic member 4, a tension spring, a compression spring, a torsion spring, or the like can be used, for example. In the present embodiment, the second elastic member 4 is, for example, a torsion spring, and is in close contact with or abuts against the handle base 1 by the biasing force of the torsion spring 4 as the second elastic member when the opening cover 2 is closed. In addition, for example, when the opening cover 2 is not subjected to an applied load from outside the outer handle mechanism (here, the case where no load is applied by the lock hook structure D described later) is applied, the opening cover 2 is applied by the torsion spring 4 Forcefully press and abut the handle base 1 . Further, by the biasing force of the torsion spring 4, a part of the main body portion 2a of the open cover 2 is fitted into the first penetration portion 1a of the handle main structure A, for example, so as to be located inside the outer surface of the handle base 1 (the open cover 2 The thickness of the main body portion 2a overlaps with the thickness of the handle base portion 1 of the handle main structure A), and other parts abut against the inner surface of the handle base portion 1 . In this case, the thickness dimension of the outer handle mechanism 100 can be further reduced and the first penetration portion 1a can be reinforced. 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 shaft 7 and a second bushing 6 . The second bushing 6 is in clearance fit with the second pin shaft 7 at the radial outer side of the second pin shaft 7 . The second pin shafts 7 are respectively penetrated and fixed to the two pin shaft fixing portions 2b. In the present embodiment, the second pin shaft 7 is, for example, fixed to the pin shaft fixing portion 2b at a position farther from the main body portion 2a than the first pin shaft 3 is.

The outer handle mechanism 100 also has a lock hook structure D ( FIG. 1 b ), and the lock hook structure D can cooperate with the cover opening mechanism B to lock the outer handle mechanism 100 . The lock hook structure D is installed on the hatch. The lock hook structure D includes a lock hook 8, and the lock hook 8 has a locking portion formed into a shape capable of locking the outer handle by hooking on the second bush 6 of the cover opening mechanism B (for example, refer to FIG. 1b). The lock hook structure D, the dotted line represents the second bushing 6). That is, the second bushing 6 cooperates with the locking hook 8 to realize the locking function of the outer handle. The lock hook 8 corresponds to the door side lock hook of the present invention. In this embodiment, as the handle body rotates relative to the lock shaft 20 , the second bushing 6 and the lock hook 8 are relatively close to or apart, for example, in a direction perpendicular to the axial direction. Accompanying this, the lock hook 8 is hooked to or disengaged from the second bush 6 , thereby locking or unlocking the outer handle. Further, the locking portion is recessed in a direction intersecting with the axial direction (in the present embodiment, in a direction perpendicular to the axial direction) so as to match the extending direction of the second bushing 6 . In this embodiment, the recessed portion of the locking portion faces one side in the longitudinal direction of the handle base 1 . For example, when the opening cover 2 is closed, the distance from the axis of the second bushing 6 to the axis of the lock shaft 20 is equal to the distance from the center inside the locking portion to the axis of the lock shaft 20 . In the case where the opening cover 2 is subjected to an applied load from the outside of the outer handle mechanism toward the inward side (here, including the case of applying a load from the lock hook structure D), from the axis of the second bushing 6 to the axis of the lock shaft 20 The distance becomes smaller than the distance from the center of the inside of the locking portion to the axis of the lock shaft 20 in the form of movement.

The lock hook 8 further has a cam portion at the front end portion of the lock portion for guiding the second bush 6 to the lock portion. In the present embodiment, the second bushing 6 is guided to the locking portion by sliding along the edge of the cam portion of the locking hook 8 . For example, when the outer handle is to be unlocked, the cover plate 2 is pressed to open against the applied force of the second elastic member 4, so that the second bush 6 is disengaged from the locking portion of the lock hook 8 (allowing the sports). When the outer handle is to be locked from the unlocked state, the opening cover 2 itself moves along with the handle body under the force of the second elastic member 4, and can move through the action of the cam to interact with the second elastic member. The applied force of 4 resists, so that the second bush 6 automatically enters the locking portion of the lock hook 8 (there is no need to apply an inward load to the opening cover 2). In addition, the second bush 6 may automatically enter the lock portion of the lock hook 8 by applying a load to the open cover 2 toward the back side. 9 schematically shows the positions of the second bushing 6 and the locking hook 8 when the second bushing 6 returns to the locked state through the edge of the cam portion after being disengaged from the locking hook 8 according to Embodiment 1 in the axial direction In the diagram of the relationship, circles C1 to C5 indicated by dotted lines indicate the positions of the second bushings 6 . The case where the second bushing 6 returns to the locked state by the edge of the cam portion after being disengaged from the locking hook 8 includes, for example, an outer handle closing process. As shown in FIG. 9 , the position change from the circle C1 to the circle C3 shows, for example, the movement trajectory after the second bushing 6 contacts the locking hook 8 during the closing process of the outer handle. Next, the positional change from the circle C3 to the circle C5 shows, for example, that after the outer handle is completely closed, the second bushing 6 is locked by the torsion spring when there is no external applied load such as an operator's force on the opening cover 2 . 4 The track that is locked under the action.

In the present embodiment, a part of the open cover 2 is exposed to the outside through the first penetration portion of the handle base 1 . Thereby, the operator can easily urge the open cover 2 from the outside of the handle base 1 to the inside through the first penetration portion. That is, the outer handle mechanism 100 can be unlocked by urging force in a direction opposing the urging force of the second elastic member 4 to unlock (release) the second bush 6 locked by the lock hook 8 . Here, the "rear side" corresponds to the side of the handle base 1 on which the support portion 1b is provided. "Outside" corresponds to the side opposite to the support portion of the handle base 1 .

The lock shaft 20 is hinged to the handle main structure A. In this embodiment, the lock shaft 20 and the handle main structure A are hinged to the two support parts 1b, and the lock shaft 20 and the support part 1b (handle main structure A) can rotate relatively around the axis of the lock shaft 20 . The outer handle mechanism 100 also includes a drive crank 18 (sometimes simply referred to as "crank 18"). The drive crank 18 is fixedly connected with the lock shaft 20 , that is, the drive crank 18 can rotate together with the lock shaft 20 . The drive crank 18 is externally provided on the lock shaft 20 at the position between the hinge joints of the lock shaft 20 and the two support parts 1b. The drive crank 18 has a hooked portion 18 a and a receiving portion 18 b on both sides of the outer peripheral portion across the lock shaft 20 . The hooked portion 18a is provided on the side closer to the clutch mechanism C described later (the other side in the longitudinal direction of the handle main structure A). When the outer handle mechanism 100 is viewed in the axial direction, the hooked portion 18 a 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 away from the clutch mechanism C described later (one side in the longitudinal direction of the handle main structure A), and is in detachable contact with the abutment receiving portion 1d of the handle main structure A, that is, the receiving portion 18b can pass through. For example, the relative rotation of the lock shaft 20 and the support portion 1b abuts against the abutment receiving portion 1d and separates from the abutment receiving portion 1d. In other words, the abutment receiving portion 1d is detachably supported 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 the state in which the receiving portion 18b is in abutment with the abutting receiving portion 1d toward the direction (counterclockwise in FIG. Then, when the receiving portion 18b abuts on the abutting receiving portion 1d, the drive crank 18 can be urged and rotated from the handle main structure A of the outer handle mechanism 100 via the receiving portion 18b. For example, when the hatch is closed and the outer handle is closed (locked), the receiving portion 18b is in contact with the handle main structure A; when the hatch is opened and the outer handle is closed (the door is opened with the inner handle or the door is opened with the outer handle, the clutch is in "off" When the outer handle is closed in the state where the handle is closed), the receiving portion 18b does not contact the handle main structure A; when the hatch is opened and the outer handle is opened (unlocked), the receiving portion 18b is in contact with the handle main structure A.

6 is a perspective view showing the clutch mechanism C of the outer handle mechanism 100 for the eversion-type emergency hatch according to Embodiment 1 of the present invention. The clutch mechanism C mainly includes a clutch rocker arm 17 , a fourth pin 16 , a first elastic member 15 , a third pin 14 , a connecting rod 13 and a crank lock hook 12 . The clutch mechanism C is arranged between the two support portions 1b of the handle main structure A. As shown in FIG. The crank lock hook 12 has a lock hook portion 12a that can be hooked or engaged with the hooked portion 18a of the driving crank 18, and is hinged with the handle main structure A (in FIG. 6, the hinge position 12.1). In this embodiment, the crank lock hook 12 is hinged to the two support parts 1b of the handle main structure A. As shown in FIG. In addition, the crank lock hook 12 is hinged to the connecting rod 13 between the part hinged to the support part 1b and the lock hook part 12a. In this embodiment, when viewed in the axial direction, the crank lock hook 12 has a lock hook portion 12a at one end, and is hinged with the two support portions 1b at the other end through, for example, a pin, and is approximately in the middle portion (in FIG. 6, the hinge position 13.1) Hinged with connecting rod 13. The crank lock hook 12 is driven by the connecting rod 13 so that the lock hook portion 12a is hooked or engaged with the hooked portion 18a, or released from the hooked portion 18a.

One end of the connecting rod 13 is hinged with the crank lock hook 12, and the other end is hinged with the clutch rocker arm 17 (in FIG. 6, the hinge position 17.4). The clutch rocker arm 17 is also hinged with the two support parts 1b of the handle main structure A. In this way, the clutch rocker arm 17 can rotate relative to the handle main structure A. When viewed in the axial direction, the clutch rocker arm 17 has a head 17a at one end (in this embodiment, a front end), and is hinged to the link 13 at the other end (in this embodiment, a base end). In addition, the clutch rocker arm 17 is hinged with the handle main structure A between the part hinged to the link 13 and the head 17a (in FIG. 6, the hinge position 17.3). In this embodiment, the head 17a has a flat surface 17.1 facing the outside of the outer handle mechanism 100, and the flat surface 17.1 is exposed to the outside of the outer handle mechanism 100 through the second through portion 1c. Through the relative rotation of the clutch rocker arm 17 and the handle main structure A, a part of the clutch rocker arm 17 , such as the head 17a, can protrude out of the handle main structure A through the second through portion 1c. The head 17a also has a flat surface 17.5 towards the inside of the outer handle mechanism 100. The first elastic member 15 is hinged with the clutch rocker arm 17 and the two supporting parts 1b of the handle main structure A through the fourth pin 16 and the 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 this U-shape are connected by plane 17.5. In addition, the clutch rocker arm 17 is hinged to the link 13 at the front ends of the two arms, and is hinged to the handle main structure A at the base ends of the two arms. The head 17a extends from the bottom of the U-shape, and when viewed in the axial direction, the head 17a extends from the bottom of the U-shape bent toward the outside of the outer handle mechanism 100 . The first elastic member 15 is located at the inner side of the two arms of the U-shape in the axial direction, and the fourth pin 16 is hinged at the other side in the length direction of the U-shape than the hinge position 17.3. That is, the hinge position 17.2 of the fourth pin shaft 16 and the clutch rocker arm 17 is closer to the other side in the length direction than the hinge position 17.3. When viewed in the axial direction, the hinge position where the third pin 14 is hinged with the two support parts 1b of the handle main structure A is closer to the outside of the outer handle mechanism 100 than the hinge position 17.3, and is closer to the length direction of the handle main structure A than the hinge position 17.3. The hinged position 17.3 is closer to one side in the length direction.

In this way, the crank lock hook 12 can be brought into engagement or disengagement from the drive crank 18 by, for example, applying force to the flat surfaces 17.5, 17.1. That is, by operating the clutch rocker arm 17, the crank lock hook 12 and the drive crank 18 can be engaged or disengaged (switching the engagement or disengagement state of the crank lock hook 12 and the drive crank 18), thereby realizing the clutch control of the inner and outer handles. When the crank lock hook 12 and the drive crank 18 are separated from the first elastic member 15, the load applied by the first elastic member 15 makes the clutch rocker arm 17 tend to close, so that the crank lock hook 12 and the drive crank 18 are kept separated. When the 12 and the driving crank 18 are in the engaged state, the first elastic member 15 acts on the load to make the clutch rocker arm 17 tend to open, so that the crank lock hook 12 and the driving crank 18 are kept in the engaged state. Here, "close" in "tends the clutch rocker arm to close" means that the clutch rocker arm 17 returns to the crank lock hook 12 and the drive crank 18 remains separated and the plane 17.1 (clutch rocker arm 17) and the outside of the handle base 1 The surface can ensure the position of the aerodynamic profile of the fuselage, including the clutch rocker arm 17 is located entirely within the outer surface of the handle base 1, eg plane 17.1 is flush with the outer surface of the handle base 1 (handle main structure A). "Open" in "tends the clutch rocker arm to open" means that the clutch rocker arm 17 is in a position where the crank lock hook 12 remains in engagement with the drive crank 18 and the flat surface 17.1 protrudes from the second penetration portion 1c of the handle base 1 . The setting positions of the fourth pin 16, the first elastic member 15 and the third pin 14 can be changed according to the situation. For example, the first elastic member 15 and the The hinge position where the clutch rocker arm 17 and the handle main structure A are hinged. As the first elastic member 15, a compression spring, a torsion spring, or the like can be used, for example. In this embodiment, the first elastic member 15 is, for example, a tension spring, the third pin 14 is hinged to the handle main structure A, and is connected to the tension spring 15 as the first elastic member; the fourth pin 16 is connected to the clutch rocker arm 17 Hinged and connected with tension spring 15.

In this embodiment, each pin shaft is arranged so that the axis is parallel to the axial direction of the lock shaft 20 . That is, the rotation axis of the lock shaft 20 , the rotation axis of the crank lock hook 12 , the rotation axis of the clutch rocker arm 17 and the rotation axis of the cover plate 2 are parallel to each other. However, it is not limited to the above structure, and at least the rotation axis of the lock shaft 20 , the rotation axis of the crank lock hook 12 and the rotation axis of the clutch rocker arm 17 may be parallel to each other.

(action of opening and closing a hatch equipped with an outer handle mechanism)

Hereinafter, the operation of opening and closing the hatch equipped with the outer handle mechanism 100 for the eversion-type emergency hatch according to Embodiment 1 will be described. The workflow of opening the hatch is shown in Figure 7, and the workflow of closing the hatch is shown in Figure 8.

Steps to open the door:

The inner handle opens the cabin door: when the inner handle opens the cabin door, the lock shaft 20 rotates (in FIG. 1a, the lock shaft 20 rotates counterclockwise relative to the handle main structure A), and the driving crank 18 rotates accordingly. At this time, the outer handle is clutched. The mechanism C is in the disengaged state, the outer handle is stationary, and the outer handle remains closed.

The door is opened by the outer handle: the load of the torsion spring 4 always makes the opening cover 2 tend to close, the finger presses the opening cover 2, and the opening cover 2 is opened. After the opening cover 2 is opened, the second bushing 6 and the lock hook 8 automatically Disengage, the outer handle is unlocked. Pull the outer handle, the handle main structure A rotates, the handle main structure A drives the drive crank 18 to rotate, and the drive crank 18 drives the lock shaft 20 to rotate (in FIG. 1a, the lock shaft 20 rotates counterclockwise relative to the handle main structure A), the cabin The door is unlocked and unlocked with the rotation of the lock shaft 20, and the hatch is opened.

Door closing steps:

The outer handle closes the door (the outer handle is unlocked): the finger presses the upper plane 17.5 of the clutch rocker arm 17, the clutch rocker arm 17 rotates and drives the crank lock hook 12 through the connecting rod 13 to match the drive crank 18, at this time, the main structure A of the handle is rotated , the handle main structure A drives the crank lock hook 12 to rotate, the crank lock hook 12 drives the drive crank 18 to rotate, and the drive crank 18 drives the lock shaft 20 to rotate (in FIG. 2, the lock shaft 20 rotates clockwise relative to the handle main structure A) . When the handle main structure A is rotated, under the action of the cam portion on the lock hook 8, the second bushing 6 slowly rotates until it is matched with the hook groove on the lock hook 8, the outer handle is locked, and the clutch rocker arm 17 still rotates from the handle after the outer handle is locked. The main structure A protrudes, pressing the protruding plane 17.1 on the clutch rocker arm 17, the clutch rocker arm 17 rotates and drives the crank lock hook 12 to separate from the driving crank 18, the clutch rocker arm 17 enters the handle main structure A, and the plane 17.1 is connected to the handle main structure A flush, outer handle closed, hatch closed.

When the outer handle is closed, the opening cover 2 is held in the closed position by the torsion spring 4, and the clutch rocker arm 17 is held in the closed position by the tension spring 15, thereby ensuring the aerodynamic shape of the fuselage.

If the cabin door has been opened by the inner handle and the outer handle is in the closed state, you need to press your finger to open the cover 2 to open the cover 2. After the cover 2 is opened, the second bushing 6 and the lock hook 8 are automatically disengaged. The outer handle is unlocked. Pull the outer handle, the main structure A of the handle rotates, the outer handle is opened, and then the door closing step is performed.

According to the outer handle mechanism 100 for an everted emergency hatch in Embodiment 1, the clutch mechanism C and the cover opening mechanism B are completely independent. This design method simplifies the outer handle mechanism and reduces the processing difficulty of the parts. The load applied by the torsion spring always makes the cover tend to close, ensuring that the cover is always closed when there is no operation, and the handle is always in a locked state, thereby preventing the outer handle from turning over due to external force interference.

(Embodiment 2)

The existing technology of the outer handle of the everted emergency cabin door includes the outer handle mechanism of Airbus series, Bombardier C series aircraft, etc. It is difficult to adjust the handle step difference, which further increases the difficulty of design and processing.

On the other hand, the outer handle mechanism of the second embodiment of the present invention further has a handle step adjustment function, and other structures are the same as those of the first embodiment.

FIGS. 5 a and 5 b show the schematic structure of the lock hook structure D for the outer handle mechanism of the everted emergency hatch according to Embodiment 2 of the present invention. The lock hook structure D includes a lock hook 8 , a lock hook flange 9 , two lock hook adjustment nuts (first threaded members) 10 and two lock hook bushings 11 .

The lock hook 8 has a first portion including a locking portion at the front end and a second cylindrical portion at the base end. The two lock hook adjustment nuts 10 are respectively screwed with the outer peripheral surface of the second part of the lock hook 8 . The lock hook flange 9 is slidably nested on the outer circumference of the lock hook 8 . The two locking hook adjusting nuts 10 are respectively adjoined and disposed on both sides of the locking hook flange 9 across the locking hook bushing 11 . The lock hook structure D is fixed to the cabin door main body structure through the lock hook flange 9 . In detail, the second part of the lock hook 8 has an outer thread on the outer peripheral surface, and the two lock hook adjustment nuts 10 are respectively provided with a hole part with an inner thread on the inner peripheral surface and open at both ends. The shackle flange 9 includes a cylindrical shackle flange body 9a. The front end of the hook flange body 9a is provided with a fixing portion 9b extending radially outward from the outer peripheral surface. For example, the fixing portion 9b is provided with holes, and the hook structure D is fixed to the door body through these holes. When viewed from the axial direction of the hook flange 9 (the hook flange main body 9a), the fixing portion 9b has, for example, a rounded triangular shape, but may have other shapes capable of being fixed to the door main body. That is, the lock hook structure D is attached to the hatch body at the fixing portion 9b. The position of the lock hook 8 is adjusted by screwing the lock hook adjustment nut 10 threaded with the more front end of the lock hook 8 among the two lock hook adjustment nuts 10 . For example, the level difference of the outer handle when the outer handle is closed is controlled by the lock hook 8, and the position of the lock hook 8 is adjusted by the lock hook adjusting nut 10, so that the level difference of the outer handle can be controlled. The lock hook flange 9 and the two lock hook adjustment nuts 10 are respectively components constituting the first adjustment mechanism of the present invention.

According to the outer handle mechanism for the everted emergency hatch of the present embodiment, the second bushing 6 in the opening cover mechanism B cooperates with the locking hook 8 of the door body (the door body), so that the locking of the outer handle can be realized. And the level difference adjustment function, the lock hook 8 is fixed on the door structure through the lock hook flange 9, when the opening cover 2 is closed, the second bushing 6 and the lock hook 8 are matched, and the handle is in a locked state, when the cover is opened. Open, the second bushing 6 and the lock hook 8 are separated, and the outer handle is in an unlocked state. At this time, the cabin door can be opened through the outer handle. The lock hook 8 is connected with the main structure of the door body by a threaded connection, and the nut 10 can be adjusted through the lock hook. Adjust the position of the lock hook 8 relative to the door body, and adjust the relative position of the opening cover 2 relative to the door body when the second bushing 6 is engaged with the lock hook 8, so as to realize the adjustment of the handle level difference.

(Embodiment 3)

The existing technology of the outer handle of the everted emergency cabin door includes the outer handle mechanism of Airbus series, Bombardier C series aircraft, etc. It is difficult to adjust the rotation angle relationship between the outer handle and the lock shaft, which further increases the difficulty of design and processing.

On the other hand, the outer handle mechanism of the third embodiment of the present invention further has the function of adjusting the rotation angle of the outer handle and the lock shaft, and the other structures are the same as those of the first embodiment. Therefore, the same reference numerals are attached to the same structures as those of the first embodiment and the repetition is omitted. illustrate.

In this 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 whose both ends are open. That is, the receiving part 18b has the hole part 18b1 which penetrates the receiving part 18b. A female thread is provided on the inner peripheral surface of the hole of the receiving portion 18b. The screw 19 is screwed into the hole portion 18b1. The screw 19 is provided with a cylindrical male thread portion having a male thread on the outer peripheral surface. One end of the screw 19 has a head with a larger diameter than the male thread portion. In a state where the screw 19 is clutched to the drive crank 18, the drive crank 18 is in contact with the abutment receiving portion 1d of the handle main structure A through the head of the screw 19. That is, the drive crank 18 is in abutment with the abutment receiving portion 1d through the screw 19 . Further, a nut (second screw member) 21 provided with a hole portion having an internal thread on the inner peripheral surface and opening at both ends is screwed to the outer peripheral surface of the screw 19 adjacent to the hole portion 18b1. In addition, a bush may be interposed between the nut 21 and the hole portion 18b1. 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 and the driving crank 18 can be adjusted by the screw 19 . The hole portion 18b1 and the adjustment screw 19 are members constituting the second adjustment mechanism of the present invention, respectively.

According to the outer handle mechanism for the eversion type emergency hatch according to the present embodiment, the drive crank mechanism includes a drive crank 18 and a screw 19, the drive crank 18 is fixedly connected with the lock shaft 20, and when the hatch door is opened through the outer handle, the handle The rotation of the structure A drives the drive crank 18 to rotate, and the lock shaft 20 rotates accordingly. The gap between the handle main structure A and the driving crank 18 can be adjusted by the screw 19. The screw design can facilitate the adjustment of the rotation angle relationship between the outer handle and the lock shaft, and reduce the processing difficulty of the handle main structure A and the driving crank 18. When the outer handle closes the hatch, the handle main structure A drives the drive crank to rotate through the crank lock hook, and the lock shaft 20 rotates accordingly.

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 and implemented without departing from the gist of the invention. In addition, the above-described embodiments and modifications thereof can be appropriately combined arbitrarily.

For example, in Embodiments 1 to 3, the main body portion 2a of the opening cover 2 is formed in a flat plate shape, so that the operator can easily apply force. However, the main body portion of the opening cover 2 is not necessarily a flat plate, and may be any shape as long as it is a structure that the operator can push through, for example, the first penetration portion. The same applies to the planes 17.1 , 17.5 of the head 17a of the clutch rocker arm 17 .

The present invention can be used, for example, for aircrafts such as civil aircraft including an everted emergency hatch.

Claims (13)

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.

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