CN106677612B

CN106677612B - Handle internal locking mechanism

Info

Publication number: CN106677612B
Application number: CN201710009056.7A
Authority: CN
Inventors: 由振华; 孙帆; 杜尚飞; 梁东明; 张彦军; 吕鹏; 赵小龙
Original assignee: Jiangsu Meilong Zhenhua Technology Co ltd
Current assignee: Jiangsu Meilong Zhenhua Technology Co ltd
Priority date: 2017-01-06
Filing date: 2017-01-06
Publication date: 2021-12-31
Anticipated expiration: 2037-01-06
Also published as: CN106677612A

Abstract

The invention discloses a door handle internal locking mechanism which is arranged between a cabin door frame and a machine body frame and is characterized in that the internal locking mechanism comprises a handle shaft stop block, a handle lock stop block, a lock shaft, a limiting pin, a rocker arm, a roller and a torsional spring, wherein a limiting surface is lifted; the handle shaft is provided with a handle shaft stop block which is used for being matched and locked with the handle lock stop block; one end of the lock shaft is provided with a handle lock stop block; the other end is provided with a rocker arm; a roller is arranged at the free end of the rocker arm; the roller rolls along a lifting limiting surface arranged on the frame of the machine body; the limiting pin is installed on a cabin door frame, the torsion spring is sleeved on the lock shaft, one end of the torsion spring is fixed on the limiting pin, the other end of the torsion spring is connected with the rocker arm, the rocker arm is enabled to tend to rotate towards the direction in the cabin, and when the cabin door is lifted, the roller is limited to roll in the lifting limiting face. The invention is characterized in that the descending of the hatch door at the opening position is prevented, and the correct position of the hatch door when being closed is ensured. And simple structure, easily operation has reduced the assembly degree of difficulty, lightens the weight of hatch door.

Description

Handle internal locking mechanism

Technical Field

The invention belongs to the technical field of airplane design, and relates to a handle internal locking mechanism.

Prior Art

The opening process of the semi-plugged cabin door of the civil aircraft is generally divided into 4 stages, firstly, the cabin door is unlocked and unlocked, and then, an opening handle is lifted; the process of pushing the door open is the end. When the cabin door is in an open state, the cabin door is limited to slide downwards under the action of gravity, and the handle needs to be locked, so that the aim of preventing misoperation of the handle caused by human or other reasons is to enable the cabin door of the airplane to sink at an open position, and the cabin door cannot enter the closed position correctly.

At present, a semi-blocking type cabin door in the existing machine type is generally locked by additionally arranging a set of mechanism at the handle, the mechanism is more complicated, the assembly difficulty is increased, and the weight of the cabin door is increased.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide a handle locking mechanism, which can lock a handle at an open position of a cabin door by adding a simple lock mechanism at one end of a handle shaft, so as to prevent the cabin door from descending at the open position and ensure the correct position of the cabin door when the cabin door is closed.

The technical scheme adopted by the invention is as follows:

the invention relates to a handle internal locking mechanism which comprises a handle shaft stop block, a handle lock stop block, a lock shaft, a limiting pin, a rocker arm, a roller, a torsion spring and a lifting limiting surface, wherein the handle shaft stop block is arranged on the handle shaft; the handle shaft stop block is fixedly connected to the handle shaft and is used for being matched and locked with the handle lock stop block; one end of the lock shaft is provided with a handle lock stop block; the other end is provided with a rocker arm; a roller is arranged at the free end of the rocker arm; the roller rolls along a lifting limiting surface arranged on the frame of the machine body; the limiting pin is installed on a cabin door frame, the limiting handle locks the stop block, the torsional spring is sleeved on the lock shaft, one end of the torsional spring is fixed on the limiting pin, the other end of the torsional spring is connected with the rocker arm, the rocker arm is enabled to have a tendency of rotating towards the direction in the cabin, and the roller is limited to roll in the lifting limiting face when the cabin door is lifted.

Furthermore, handle lock dog one end sets up a lock axle dog, with handle axle dog cooperation locking, the other end sets up two limit stop, respectively with the spacer pin cooperation spacing, one side limit stop restriction lock axle is in the latched position termination, opposite side limit stop restriction lock axle turned angle.

Further, two dogs do not contact when normal locking between handle axle dog and lock axle dog, reserve clearance L between two dogs and be 2 ~ 5 mm.

Further, under the locking state, when the handle abnormally rotates, the handle shaft stop dog contacts with the lock shaft stop dog, an included angle alpha between acting force F of the handle shaft stop dog on the lock shaft stop dog and a connecting line of a contact point of the handle shaft stop dog and the lock shaft center is 0-5 degrees, and the acting force F has a tendency that the lock shaft rotates towards the locking direction.

Furthermore, the rocker arm is fixedly connected with the roller, and the roller is cylindrical.

The invention relates to an airplane cabin door which is provided with the handle internal locking mechanism.

The invention has the beneficial effects that:

1. the invention prevents the cabin door from descending at the opening position by matching the handle shaft stop block and the handle lock stop block.

2. The invention ensures the correct position of the hatch door when the hatch door is closed by locking the handle shaft.

3. The invention has simple structure, easy operation, reduced assembly difficulty and reduced weight of the cabin door.

Drawings

FIG. 1 is a view of the position of the mechanism of the present invention.

Fig. 2 is an assembly view of the mechanism of the present invention.

Fig. 3 is a movement principle diagram of the mechanism of the invention.

Fig. 4 is a schematic view of the tendency of the lock of the present invention to rotate in the axial locking direction.

Wherein: 1-handle shaft, 2-cabin door frame, 3-body frame, 4-handle shaft stop block, 5-handle lock stop block, 51-lock shaft stop block, 52-limit stop block, 6-lock shaft, 7-limit pin, 8-rocker arm, 9-lifting limit surface, 10-roller, 11-torsion spring, a-handle shaft stop block rotation direction, b-cabin door lifting curve motion track, c-cabin door outward motion direction, d-motion track after roller is separated from lifting limit surface.

Detailed Description

The technical solution in the embodiments of the present invention is described in more detail below with reference to the accompanying drawings.

Example (b): referring to fig. 1,2 and 4, the handle interlock mechanism of the present invention is shown in a position diagram and a schematic structural view for use in an aircraft door. The handle internal locking mechanism is positioned at one end of the handle shaft 1 and between the cabin door frame 2 and the machine body frame 3. The handle internal locking mechanism comprises a handle shaft stop block 4, a handle lock stop block 5, a lock shaft 6, a limiting pin 7, a rocker arm 8, a roller 10, a torsion spring 11 and a lifting limiting surface 9; the handle shaft stop block 4 is fixedly connected to the handle shaft 1 and is used for being matched and locked with the handle lock stop block 5; one end of the lock shaft 6 is provided with a handle lock stop block 5; one end of the handle lock stop 5 is provided with a lock shaft stop 51 which is matched and locked with the handle shaft stop 4, the other end of the handle lock stop is provided with two limit stops 52 which are matched and limited with the limit pin 7, one limit stop limits the end of the lock shaft at a locking position, and the other limit stop limits the rotation angle of the lock shaft; two stoppers do not contact under the normal locking condition between handle axle dog 4 and lock axle dog 51 to there is design reserve clearance L between two stoppers to be 2 ~ 5 mm. When the handle rotates abnormally, the handle shaft stop block 4 contacts the lock shaft stop block 51, an included angle alpha between an acting force F of the handle shaft stop block 4 on the lock shaft stop block 51 and a connecting line of the contact point and the center of the lock shaft 6 is 0-5 degrees, and the acting force F enables the lock shaft 6 to have a trend of rotating in the locking direction (as shown in a rotating direction e in fig. 4), so that the locking is more stable. The limit stop 52 at one side limits the locking shaft to stop at the locking position, and the limit stop 52 at the other side prevents the locking shaft from rotating for an overlarge angle to damage the torsion spring; the other end of the lock shaft 6 is provided with a rocker arm 8; a roller 10 is arranged at the free end of the rocker arm 8; the roller 10 rolls along the lifting limiting surface 9 arranged on the frame of the machine body; the limit pin 7 is fixedly arranged on the cabin door frame 2, and realizes the limit function of the invention through the limit of two limit stops 52 on the handle lock stop 5; the limiting handle locks the stop block 5, the torsional spring 11 is sleeved on the lock shaft 6, one end of the torsional spring is fixed on the limiting pin 7, and the other end of the torsional spring is connected with the rocker arm 8, so that the rocker arm 8 has a tendency of rotating towards the direction in the cabin, and the roller is limited to roll in the lifting limiting surface 9 when the cabin door is lifted. The lifting limit surface 9 is fixedly connected with the machine body frame 3, and the lifting limit surface 9 is obtained by simulating the lifting of the cabin door according to the lifting track of the cabin door. The rocker arm 8 is fixedly connected with the lock shaft 6; the roller 10 is installed on the rocker arm 8, the rocker arm 8 is fixedly connected with the roller 10, and the roller 10 is cylindrical and freely rolls along the lifting limiting surface 9.

As shown in fig. 3, the working principle of the present invention is as follows:

in the initial position (as shown in fig. 3I), the rocker arm 8 is acted by the torsion spring 11, so that the roller 10 is always in contact with the lift limiting surface 9.

In the stage before the lift of the cabin door (as shown in II in figure 3), when the cabin door is unlocked and unlocked, the handle is rotated, so that the handle shaft stop 4 rotates along with the handle shaft 1 (as shown in motion a in figure 3 II), while the rest of the mechanism remains stationary; when the cabin door enters a lifting stage (shown as III in fig. 3), the handle shaft 1 continues to rotate, the movement track (shown as movement a in III in fig. 3) of the handle shaft is, and the roller 10 moves according to the lifting limiting surface 9; in this phase the lock shaft 6 does not rotate, so the handle lock stop 5 remains stationary during the lifting phase, when the handle is rotated to the end position, the hatch door reaches the lifting end position, at which point the handle cannot continue to rotate.

When the cabin door enters an opening stage (as shown in fig. 3, iv), the cabin door is pushed, the door body structure moves outwards (as shown in fig. 3, iv, motion c), the roller 10 is separated from the limit of the lifting limit surface 9, the rocker arm 8 starts to rotate under the action of the torsion spring 11 (as shown in fig. 3, iv, motion d), the rocker arm 8 drives the lock shaft 6 to rotate until another limit stop 52 on the handle lock stop 5 contacts with the limit pin 7, at this time, the lock shaft stop 51 on the handle lock stop 5 and the handle shaft stop 4 complete locking, and the handle shaft 1 cannot rotate, so that the locking purpose is achieved.

Claims

1. A handle internal locking mechanism is characterized by comprising a handle shaft stop block (4), a handle lock stop block (5), a lock shaft (6), a limiting pin (7), a rocker arm (8), a roller (10), a torsion spring (11) and a lifting limiting surface (9); the handle shaft stop block (4) is fixedly connected to the handle shaft (1) and is used for being matched and locked with the handle lock stop block (5); one end of the lock shaft (6) is provided with a handle lock stop block (5); the other end is provided with a rocker arm (8); a roller (10) is arranged at the free end of the rocker arm (8); the roller (10) rolls along a lifting limiting surface (9) arranged on the frame of the machine body; the limiting pin (7) is arranged on the side frame of the cabin door, the limiting handle locks the stop block (5), the torsional spring (11) is sleeved on the locking shaft (6), one end of the torsional spring is fixed on the limiting pin (7), the other end of the torsional spring is connected with the rocker arm (8), so that the rocker arm (8) has a tendency of rotating towards the direction in the cabin, and the roller is limited to roll in the lifting limiting surface (9) when the cabin door is lifted; one end of the handle lock stop block (5) is provided with a lock shaft stop block (51) which is matched and locked with the handle shaft stop block (4), the other end of the handle lock stop block is provided with two limit stop blocks (52) which are respectively matched and limited with the limit pin (7), one side of the limit stop block limits the stop of the lock shaft at a locking position, and the other side of the limit stop block limits the rotation angle of the lock shaft; the handle shaft stop block (4) is not contacted with the lock shaft stop block (51) when the lock shaft stop block is normally locked; in the locking state, when the handle rotates abnormally, the handle shaft stop block (4) is contacted with the lock shaft stop block (51).

2. The handle internal lock mechanism according to claim 1, wherein a gap of 2-5 mm is reserved between the handle shaft stop (4) and the lock shaft stop (51).

3. The handle interlock mechanism according to claim 1 wherein the angle α between the force F of the handle shaft stop (4) on the lock shaft stop (51) and the line connecting the contact point of the two and the center of the lock shaft (6) is 0 to 5 ° and the force F has a tendency to rotate the lock shaft (6) in the locking direction.

4. The handle interlock mechanism according to claim 1 wherein the rocker arm (8) is fixedly connected to a roller (10), the roller (10) being cylindrical.

5. An aircraft door provided with an internal handle lock mechanism as claimed in any one of claims 1 to 4.