CN218563296U

CN218563296U - Internal and external handle mechanism of aircraft emergency door

Info

Publication number: CN218563296U
Application number: CN202222692742.8U
Authority: CN
Inventors: 王哲; 李高胜; 丁钰良
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-03
Anticipated expiration: 2032-10-12

Abstract

The application belongs to the technical field of aviation, and particularly relates to an inner and outer handle mechanism of an aircraft emergency door, which comprises a lock, wherein the lock is hinged with an adjustable pull rod, and the adjustable pull rod enables the lock to rotate clockwise or anticlockwise around a rotating shaft so that a bayonet is clamped or separated from a roller; one end of the inner handle bracket is fixedly hinged on the support, and the other end of the inner handle bracket is hinged with the adjustable pull rod; the inner handle bracket has a handle inside the emergency exit door; install the extension spring between interior handle support and the support, the extension spring provides interior handle support anticlockwise pivoted pretightning force, and the torsional spring is installed between support and outer handle support, and when outer handle support clockwise turning, outer handle support makes interior handle support clockwise turning through outer handle gyro wheel. The lock can be unlocked in two modes of the inner handle support and the outer handle support, the outer handle support needs to overcome the double resistance of the tension spring and the torsion spring when being unlocked, the airplane is prevented from being accidentally unlocked by the outer handle support due to the resistance, and the resistance of the tension spring only needs to be overcome when the inner handle support is unlocked.

Description

Internal and external handle mechanism of aircraft emergency door

Technical Field

The application belongs to the technical field of aviation, in particular to an interior and exterior handle mechanism of an aircraft emergency door.

Background

The emergency door of the airplane is used for emergency evacuation of the airplane, the emergency door can be conveniently and quickly opened inside and outside the airplane under emergency conditions, the emergency door cannot be accidentally opened in a normal flying state, and the emergency door is firmly locked. The invention discloses a connecting rod rocker arm lock, which has various forms of inner and outer handle lock mechanisms. The mechanism is simple and firm, and the cost is low. The inner handle moves inwards, the outer handle is not moved, the inner handle moves to drive the adjustable pull rod to drive the lock to be separated from the lock wheel, and the two locks are synchronized by a rotating shaft so that the two locks are stressed. The outer handle moves inwards, and the inner handle is pushed by the roller to move and unlock. The outer handle is small outside and large inside, a skin thickness step is reserved, the outer handle is flush with the outer skin through the clamping of the outer skin, and the outer handle is far larger than the pneumatic load borne by the outer handle due to the fact that the outer handle is reset by the torsion spring force rod. The inner handle is provided with two limit position limiting piles, and the two tension springs enable the inner handle to move through a dead point, so that locking is achieved, and unlocking is not easy.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the present application provides an aircraft emergency door inside and outside handle mechanism, including:

the lock is hinged to the emergency door structure through a rotating shaft, the lock is hinged with an adjustable pull rod, the lockset is provided with a bayonet, and the adjustable pull rod enables the lock to rotate clockwise or anticlockwise around the rotating shaft so that the bayonet is clamped or separated from the roller, so that locking or unlocking of the lock is realized;

one end of the inner handle bracket is fixedly hinged on the support, and the other end of the inner handle bracket is hinged with the adjustable pull rod; the inner handle bracket has a handle inside the emergency exit door; a tension spring is arranged between the inner handle bracket and the support, the tension spring provides pre-tightening force for the counterclockwise rotation of the inner handle bracket, the counterclockwise rotation of the inner handle bracket is limited by a locking limiting pile at a first preset angle, and the lock is kept locked at the moment; when the inner handle bracket is rotated clockwise, the inner handle bracket is limited by the disengagement limiting pile at a second preset angle, and the lock is disengaged at the moment;

the outer handle support is fixedly hinged on the support and provided with an outer handle, an outer handle roller and a torsion spring; the torsion spring is arranged between the support and the outer handle bracket, the torsion spring provides pre-tightening force for anticlockwise rotation of the outer handle bracket, so that the outer handle is pressed on the outer skin, and the outer skin is provided with an opening through which the outer handle cannot pass; the outer handle roller is abutted to the inner handle bracket, and when the outer handle bracket rotates clockwise, the outer handle bracket enables the inner handle bracket to rotate clockwise through the outer handle roller.

Preferably, the contact surface of the inner handle bracket and the outer handle roller is a smooth and flat surface.

Preferably, adjustable pull rod includes well core rod and connects two connecting rods at well core rod both ends, and the connecting rod includes the monaural and has the threaded rod of external screw thread, and well core rod's both ends face has seted up the internal thread hole, and the connecting rod passes through the threaded rod is connected with the internal thread hole to through the length of threaded rod and the adjustable pull rod of internal thread hole screw in length adjustment.

Preferably, an outer handle backing plate is mounted on the outer handle, and the outer handle backing plate covers and presses on the opening.

Preferably, the torsion spring comprises two symmetrically distributed.

Preferably, the tension spring comprises two symmetrically distributed tension springs

The advantages of the application include: can unblank through interior handle support and outer handle support dual mode to reset through extension spring and torsional spring, outer handle support unblanks to need overcome the dual resistance of extension spring and torsional spring, avoids the aircraft to unblank because the resistance makes outer handle support accident, and interior handle support unblanks only need overcome the resistance of extension spring, conveniently unblanks, and this application mechanism is simple, labour saving and time saving, low cost.

Drawings

Fig. 1 is a schematic view of an internal and external handle mechanism of an emergency door of the present invention;

fig. 2 is a left side view of the inner and outer handle mechanism of the emergency door of the present invention, fig. 1.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.

As shown in fig. 1 and 2, an internal and external handle mechanism of an airplane emergency door mainly comprises a hinge bolt 1, a roller 2, a lock 3, a rotating shaft 4, a support 5, an adjustable pull rod 6, an internal handle support 7, an adjustable pull rod lower end hinge 8, an internal handle support hinge 9, a locking limit pile 10, a releasing limit pile 11, a tension spring lower hanging point 12, a tension spring upper hanging point 13, an external handle hinge 14, a torsion spring limit shaft 15, a fixed external handle roller bolt 16, an external handle roller support 14, an external handle 18, a fixed plate 19, an adjustable pull rod upper end hinge 20, a roller support 21, an internal handle sleeve 22, an external handle roller 23, a tension spring 24, a torsion spring 25, an internal handle shaft 26, an external handle backing plate 27, a support and the like 28, and an external handle support 29; wherein:

the lock 3 is hinged to the emergency door structure through a rotating shaft 4, the lock 3 is hinged to an adjustable pull rod 6, the lock 3 is provided with a bayonet, the adjustable pull rod 6 enables the lock 3 to rotate clockwise or anticlockwise around the rotating shaft 4 to enable the bayonet to be clamped or separated from the roller 2, and locking or unlocking of the lock 3 is achieved;

one end of the inner handle bracket 7 is fixedly hinged on the support 28, and the other end of the inner handle bracket 7 is hinged with the adjustable pull rod 6; the inner handle bracket 7 has a handle inside the emergency exit door; a tension spring 24 is arranged between the inner handle bracket 7 and the support 28, the tension spring 24 provides pre-tightening force for the counterclockwise rotation of the inner handle bracket 7, the inner handle bracket 7 is limited to rotate counterclockwise by the locking limiting pile 10 at a first preset angle, and the lock 3 is locked at the moment; when the inner handle bracket 7 is rotated clockwise, the inner handle bracket 7 is limited by the disengagement limiting pile 11 at a second preset angle, and the lock 3 is disengaged at the moment;

an outer handle bracket 29 fixedly hinged on the support 28, the outer handle bracket 29 having an outer handle 18, an outer handle roller 23 and a torsion spring 25; the torsion spring 25 is arranged between the support 28 and the outer handle bracket 29, the torsion spring 25 provides a pre-tightening force for the counterclockwise rotation of the outer handle bracket 29, so that the outer handle 18 is pressed on the outer skin, and the outer skin is provided with an opening through which the outer handle 18 cannot pass; the outer handle roller 23 abuts on the inner handle holder 7, and when the outer handle holder 29 is rotated clockwise, the outer handle holder 29 rotates the inner handle holder 7 clockwise by the outer handle roller 23.

The contact surface of the inner handle bracket 7 and the outer handle roller 23 is a smooth and flat surface. Adjustable pull rod 6 includes well core rod and connects two connecting rods at well core rod both ends, and the connecting rod includes the monaural and has the threaded rod of external screw thread, and the internal thread hole has been seted up to well core rod's both ends face, and the connecting rod passes through the threaded rod is connected with the internal thread hole to through the length of threaded rod and internal thread hole screw in length adjustment adjustable pull rod 6. An outer handle pad 27 is mounted on the outer handle 18 and the outer handle pad 27 covers and presses against the opening. The torsion spring 25 includes two symmetrically disposed.

In actual operation, an opening is formed in the outer skin according to the size of the outer handle 18, the outer handle backing plate 27 is larger than the outer handle 18 and is riveted with the outer handle so that the outer handle does not protrude out of the outer skin, the outer handle roller support 17 is connected to the outer handle 18 and the outer handle backing plate 27, the outer handle roller support 17 is provided with a fixed outer handle roller bolt 16, the outer handle roller 23 is connected with the fixed outer handle roller bolt 16, the whole outer handle assembly connected with the outer handle support is connected to the support 28 through the outer handle hinge 14, and the support 28 is fixed to the emergency door structure.

The inner handle sleeve 22 is connected to the inner handle support 7 through an inner handle shaft 26, the lower end of the adjustable pull rod 6 is connected to the inner handle support 7 through an adjustable pull rod lower end hinge 8, the upper end of the adjustable pull rod 6 is connected to the lock 3 through an adjustable pull rod upper end hinge 20, the inner handle support 7 is connected to the support 28 through an inner handle support hinge 9, the inner handle support 7 can rotate between the locking limiting pile 10 and the unlocking limiting pile 11, the rotation angle is designed according to locking and unlocking, the positions of the locking limiting pile 10 and the unlocking limiting pile 11 are also determined, the inner handle support 7 is connected with the tension spring 24 through a tension spring upper hanging point 13, the tension spring is connected with the support 28 through a tension spring lower hanging point 12, and the power assistance and the resistance of the tension spring are applied to the movement of the inner handle to form a dead point locking.

The lock 3 is connected on a support 5 through a rotating shaft 4, and the support 5 is fixed on the emergency door structure. The roller support 21 is fixed on an upper door frame of the emergency door, the roller 2 is connected to the roller support 21 through a hinge bolt 1, and the lock 3 is driven by an adjustable pull rod 6 to be clamped on the roller 2 to be locked and separated from the emergency door to be unlocked.

The outer handle can be pulled to lock and unlock, and the inner handle can be pulled to lock and unlock.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An aircraft emergency door inside and outside handle mechanism, comprising:

the emergency door is characterized by comprising a lock (3), the lock (3) is hinged to an emergency door structure through a rotating shaft (4), the lock (3) is hinged to an adjustable pull rod (6), the lock (3) is provided with a bayonet, and the adjustable pull rod (6) enables the lock (3) to rotate clockwise or anticlockwise around the rotating shaft (4) so that the bayonet is clamped on or separated from the roller (2), and locking or unlocking of the lock (3) is achieved;

one end of the inner handle bracket (7) is fixedly hinged on the support (28), and the other end is hinged with the adjustable pull rod (6); the inner handle bracket (7) has a handle inside the emergency exit door; a tension spring (24) is installed between the inner handle support (7) and the support (28), the tension spring (24) provides pre-tightening force for counterclockwise rotation of the inner handle support (7), the inner handle support (7) is limited to counterclockwise rotation through the locking limiting pile (10) at a first preset angle, and the lock (3) is kept locked at the moment; when the inner handle support (7) is rotated clockwise, the inner handle support (7) is limited by the disengagement limiting pile (11) at a second preset angle, and the lock (3) is disengaged at the moment;

the outer handle support (29) is fixedly hinged on the support (28), and the outer handle support (29) is provided with an outer handle (18), an outer handle roller (23) and a torsion spring (25); the torsion spring (25) is arranged between the support (28) and the outer handle bracket (29), the torsion spring (25) provides a pre-tightening force for the anticlockwise rotation of the outer handle bracket (29) so that the outer handle (18) is pressed on the outer skin, and the outer skin is provided with an opening through which the outer handle (18) cannot pass; the outer handle roller (23) is abutted against the inner handle bracket (7), and when the outer handle bracket (29) rotates clockwise, the outer handle bracket (29) enables the inner handle bracket (7) to rotate clockwise through the outer handle roller (23).

2. An aircraft emergency door inner and outer handle mechanism according to claim 1, wherein the contact surface of the inner handle bracket (7) and the outer handle roller (23) is smooth and flat.

3. The aircraft emergency door inside and outside handle mechanism according to claim 1, wherein the adjustable pull rod (6) comprises a central rod and two connecting rods connected to both ends of the central rod, the connecting rods comprise a single lug and a threaded rod with external threads, both end surfaces of the central rod are provided with internal threaded holes, the connecting rods are connected with the internal threaded holes through the threaded rod, and the length of the adjustable pull rod (6) is adjusted by screwing the threaded rod into the internal threaded holes.

4. An aircraft emergency door inner and outer handle mechanism according to claim 1, wherein the outer handle (18) is provided with an outer handle pad (27), the outer handle pad (27) overlying and bearing against said opening.

5. An aircraft emergency door inner and outer handle mechanism according to claim 1, characterised in that the torsion spring (25) comprises two symmetrically distributed.

6. An aircraft emergency door inner and outer handle mechanism according to claim 1, characterized in that the tension spring (24) comprises two symmetrically distributed.