WO2022242179A1

WO2022242179A1 - Lock-latch mechanism apparatus

Info

Publication number: WO2022242179A1
Application number: PCT/CN2021/141949
Authority: WO
Inventors: 吴斌; 黄振庭; 张仲桢; 冯正玖; 袁强飞; 武戎戎
Original assignee: 中国商用飞机有限责任公司; 中国商用飞机有限责任公司上海飞机设计研究院
Priority date: 2021-05-21
Filing date: 2021-12-28
Publication date: 2022-11-24
Also published as: CN113202345B; CN113202345A

Abstract

A lock-latch mechanism apparatus, comprising a latch mechanism (10), a lock mechanism (20), and a linkage mechanism (30). The latch mechanism (10) comprises a latch shaft (11) rotatably mounted to a cabin door body. The lock mechanism (20) comprises a lock shaft (21) rotatably mounted to the cabin door body, the lock shaft (21) being configured so that the axis of the lock shaft (21) is fixed with respect to the axis of the latch shaft (11). The linkage mechanism (30) comprises a driven member (31) fixedly connected to the latch shaft (11) and a driving member (32) fixedly connected to the lock shaft (21), the driven member (31) comprising a latched driven end part (31a) and an unlatched driven end part (31b), and the driving member (32) driving the driven member (31) to rotate. A latching and locking method using the aforementioned lock-latch mechanism apparatus, and an unlatching and unlocking method using the aforementioned lock-latch mechanism apparatus are used, which implements that a cabin door must be latched before same can be locked during a closing process, and the cabin door must be unlocked before same can be unlatched during an opening process.

Description

Latch Mechanism

technical field

The invention relates to a latch mechanism device, in particular to a latch mechanism device for a latch and a lock between a door body and a door frame of an aircraft, wherein the door frame is located on the fuselage of the aircraft.

Background technique

1. The source of the problem:

The safety standards for civil passenger aircraft doors require that each door must have measures to prevent it from being opened in flight due to mechanical failure or failure of any single structural element, and has specific requirements for latches and locking mechanisms. Design the latch mechanism to meet the above requirements.

2. Current status and problems of existing technologies:

The lock mechanism and the latch mechanism are important mechanisms of the cabin door in the pressurized area, which are related to the safety of the aircraft operation. Therefore, a large number of structural improvements have been made in this area in this field, such as the patent publication CN108166849A, which relates to the joint drive of the passenger aircraft cabin door latch. A method for controlling a pointing device, comprising the following steps:

1) When the cabin door is opened, the indicator board is driven by the reset device and is located at the limit position away from the indicator window;

2) When the hatch is closed, the latch shaft is rotated for latching. At this time, the latch crank on the latch shaft rotates to push the gear pin up, so that the indicator rotates upward with the central axis of the rotating shaft;

3) After the latch shaft moves, the lock shaft rotates to lock the cabin door. The lock crank on the lock shaft contacts the gear pin, the gear pin continues to lift, the indicator continues to rotate, and the gear pin is separated from the latch crank. , the indicator plate is inserted into the indicator window.

If the latch mechanism fails and the latch is not locked, even if the lock mechanism is locked, the lock crank cannot drive the stop pin to make the indicator plate reach the locked position, and the red area can be seen in the indicator window; if the lock mechanism fails and the lock cannot be fully locked, the lock crank will not The indicator can be driven to the locked position, and the red area can be seen from the indicator window, indicating that the hatch is not fully locked, prompting the operator that the hatch is not latched or locked, and needs to be closed or checked again.

It can be seen that the prior art can only judge whether the bolting and locking are completed from the sign, and the locking can still be carried out under the unfinished situation of the bolting. Therefore, its structural safety needs to be further improved.

Contents of the invention

The task of the present invention is to improve the aforementioned drawbacks.

According to one aspect of the present invention, the present invention provides a latch mechanism device for a latch and a lock between a hatch door body and a hatch door frame. The latch mechanism device includes a latch mechanism, a lock mechanism and a linkage mechanism. The latch mechanism includes a latch shaft that is rotatably installed on the door body of the hatch; the lock mechanism includes a lock shaft that is rotatably installed on the door body of the hatch, and the lock shaft is configured such that the axis of the lock shaft is fixed relative to the axis of the latch shaft; the linkage mechanism includes A driven member fixedly connected to the latch shaft and a drive member fixedly connected to the lock shaft, the driven member includes a latch driven end and an unlatched driven end, and the drive member drives the driven member to rotate. Wherein, the driving member and the driven member are constructed as:

When the latch is locked, the lock shaft rotates around its axis in the locking direction, so that the lock mechanism rotates, and the driving member on it contacts and pushes the latch driven end of the driven member, so that the latch shaft moves along the latch direction. The direction rotates around the axis of the latch shaft, so that the latch mechanism reaches the latch position, and then the driving member moves relative to the driven member, and the lock mechanism reaches the locked position;

When unlocking and unlatching, the lock shaft rotates around its axis in the unlocking direction, the driving member moves relative to the driven member, the lock mechanism rotates to the unlocked position, and then the driving member moves to contact and push the unlatching driven end of the driven member And therefore the latch shaft rotates around the axis of the latch shaft in the unlatching direction, so that the latch mechanism reaches the unlatching position.

Preferably, on the basis of the above technical solution of the present invention, the distance between the point where the driven end of the latch and the driven end of the latch contacts the driving member is set according to the time of locking and unlocking.

Preferably, on the basis of the above-mentioned technical solution of the present invention, the driven member is a "V"-shaped fork ear, and the fork of the "V"-shaped fork ear that contacts the driving member rotating in the locking direction is the latch The driven end, the fork of the "V"-shaped fork ear that is in contact with the driving member rotating in the unlocking direction is the unlatching driven end. Drive rollers at the end of the drive rocker arm.

Preferably, on the basis of the above technical solution of the present invention, the latch mechanism further includes a latch shaft insertion part fixedly connected to the latch shaft and a door frame insertion part fixedly connected to the hatch door frame, the latch shaft insertion part and the door frame insertion part The accessories are configured to be mated together with the latch axis plug-in part and the door frame plug-in part when the latch mechanism is in the latching position, so that the hatch door body is latched relative to the hatch door frame. The lock mechanism includes a latch shaft engaging part and a lock shaft engaging part connected to the lock shaft, and the latch shaft engaging part is at least a part of the latch shaft. The latch shaft engaging part and the lock shaft engaging part are configured such that when the lock mechanism is in the locked position, the lock shaft engaging part is combined with the latch shaft engaging part so that the latch shaft is locked in the latched position.

Preferably, on the basis of the above-mentioned technical solution of the present invention, the latch shaft insertion part includes a latch rocker arm fixedly protruding radially from the latch shaft and a latch roller arranged at the end of the latch rocker arm; the door frame insertion part includes a fixed The base plate connected to the hatch door frame and the latch guide groove formed on the base plate, the latch guide groove is configured so that the latch roller can be inserted into the latch guide groove in the upper latch position; the latch shaft engaging part includes a boss radially protruding from the latch shaft; the lock The shaft engagement member includes a lock block radially protruding from the lock shaft, the rotation of the lock shaft can drive the lock block to rotate, the lock block has a configuration capable of engaging with the boss of the latch shaft, and the lock block and the boss are configured to be in the locked position The lock block and the boss can be combined with each other to prevent the latch shaft from rotating in the unlocking direction.

Preferably, on the basis of the above technical solution of the present invention, the locking block is configured as a U-shaped groove capable of receiving the boss.

Preferably, on the basis of the above technical solution of the present invention, the latch mechanism device further includes a latch limit device and an unlock limit device. In the latched position, the latching limiting device performs two-way limiting on the driven member in the latching direction and in the unlatching direction; in the unlatching position, the unlatching limiting device performs two-way limiting on the driven member.

Preferably, on the basis of the above-mentioned technical solution of the present invention, the latch limit device includes a latch forward stop fixed relative to the axis of the latch shaft and a latch reverse stop fixed relative to the lock shaft. In the latching position, the latching forward stopper restricts the movement of the driven member in the latching direction; in the latching position, the latching reverse stopper restricts the movement of the driven member in the unlatching direction. Further, the unlocking limiting device includes an unlatching forward stopper fixed relative to the lock shaft and an unlatching reverse stopper fixed relative to the shaft center of the latch shaft. In the unlatching position, the unlatching stopper limits the movement of the driven member along the bolt-on direction; in the unlatching position, the unlatching reverse stopper limits the movement of the driven member in the unlatching direction.

Preferably, on the basis of the above-mentioned technical solution of the present invention, the latch alignment stopper includes a latch bracket fixed to the door body of the cabin door and a latch alignment stop bolt that is adjustably fixed to the latch bracket. The bolt is configured to stop the driven end of the driven member when the driven member at the bolt position rotates in the direction of the bolt; When the driven member at the latching position rotates in the unlatching direction, it can stop the latching driven end of the driven member; the unlatching stopper includes an unlatching stop bolt that is adjustably fixed to the drive rocker arm, The unlatching stop bolt is configured to stop the latching driven end of the driven member when the driven member at the unlatching position rotates in the latching direction; An unlatching bracket and an unlatching anti-stop bolt that is adjustably fixed to the unlatching bracket. The unlatching anti-stop bolt is configured to stop the unlatching of the driven member when the driven member at the unlatched position rotates in the unlatching direction. Latch follower end.

Preferably, on the basis of the above technical solution of the present invention, the latch mechanism device further includes a latch shaft state display device, the latch shaft state display device includes a target fixed to the driven member and a sensor fixed relative to the axis of the latch shaft , the target and the sensor are configured so that the sensor can provide information on the position of the latch shaft; the latch mechanism device also includes a lock shaft state display device located on the lock shaft engagement member and configured to provide information on the position of the lock shaft.

According to another aspect of the present invention, the present invention provides a method for latching and locking using the latch mechanism device in the above technical solution of the present invention, the method includes the following steps:

1) Turn the lock shaft in the lock mechanism in the locking direction, the lock mechanism and the driving member of the linkage mechanism arranged on the lock shaft rotate, so that the drive member drives the driven member of the linkage mechanism arranged on the latch shaft to rotate, thus The driven member drives the latch mechanism including the latch shaft to rotate in the latch direction to the latch position, so that the latch shaft is in the latch state; and

2) Continue to rotate the lock shaft in the locking direction, the driving member of the linkage mechanism moves relative to the driven member of the linkage mechanism, and the lock shaft drives the lock mechanism to rotate to the locked position, so that the latch shaft is in the locked state.

Preferably, on the basis of the above-mentioned method technical solution of the present invention, the following steps are also included:

In step 1):

The rotation of the lock shaft makes the lock block of the lock mechanism and the driving rocker arm of the driving member rotate, and the driving rocker makes the driving roller arranged on the driving rocker contact and pushes the upper latch of the driven member in the form of a “V”-shaped fork from moving end,

The driven end of the latch makes the "V"-shaped fork ear drive the latch shaft to rotate, so that the rocker arm of the latch on the latch shaft rotates to the latch position,

In the latch position, the latch roller arranged on the latch rocker arm is inserted into the latch guide groove, thereby preventing the door body from moving in the direction away from the door frame;

In step 2):

The driving roller moves relative to the driven end of the latch, and the lock block of the lock mechanism rotates to the locked position,

In the locked position, the lock block engages with the boss of the latch shaft, thereby preventing the latch shaft from rotating in the unlocking direction.

According to yet another aspect of the present invention, the present invention provides a method for unlocking and unlocking using the latch mechanism device in the above claims, the method comprising the following steps:

1) Turn the lock shaft in the lock mechanism in the unlocking direction, the lock mechanism and the drive member of the linkage mechanism arranged on the lock shaft rotate, so that the drive member moves relative to the driven member of the linkage mechanism arranged on the latch shaft, and the lock shaft Drive the lock mechanism to rotate to the unlocked position, thereby releasing the latch shaft, so that the latch shaft is in the unlocked state; and

2) Continue to rotate the lock shaft in the unlocking direction, and the driving member of the linkage mechanism drives the driven member to rotate, so that the driven member drives the latch mechanism including the latch shaft to rotate in the unlocking direction to the unlocking position, so that the latch shaft is in the unlocked state .

In step 1):

The rotation of the lock shaft makes the driving roller of the driving member, which is arranged on the driving rocker arm, move relative to the latch driven end of the driven member in the form of a “V” shaped fork, and the lock block of the lock mechanism rotates to the unlocked position,

In the unlocked position, the lock block is disengaged from the boss of the latch shaft, allowing the latch shaft to rotate in the unlocking direction;

In step 2):

The drive roller contacts and pushes the unlatching follower end of the "V" shaped lug,

Unlatching the driven end makes the "V"-shaped fork ear drive the latch shaft to rotate, so that the latch rocker arm arranged on the latch shaft rotates to the unlatching position,

In the unlatched position, the latch roller arranged on the latch rocker arm withdraws from the latch guide groove, thereby allowing the hatch door body to move in a direction away from the hatch door frame.

The latch mechanism device of the present invention can realize that the cabin door must be unlocked before it can be unlatched during the opening process, and the cabin door must be latched before it can be locked during the closing process. In addition, in the closed state and the open state of the hatch, the latch mechanism is constrained by the limit element, that is, the latch limit device and the unlatch limit device, so as to ensure that the latch mechanism is always in the position required by the design, and ensure that the hatch can be opened and closed normally. closure.

Description of drawings

1 is a perspective view of a latch mechanism device according to the present invention, which schematically shows an assembly of the latch mechanism device, wherein the latch mechanism device is in a latched and locked state;

Fig. 2 is a perspective view of the latch mechanism device shown in Fig. 1, which schematically shows the assembly of the latch mechanism device, wherein the latch mechanism device is in an unlatched and unlocked state;

Fig. 3 is a partial top view of the latch mechanism device shown in Fig. 1, which shows the structure of the lock mechanism in the locked state between the latch shaft and the lock shaft in the latch mechanism device;

Fig. 4 is a schematic block diagram of the steps of using the latch mechanism device of the present invention to latch and lock the cabin door;

Fig. 5 is a schematic block diagram of the steps of unlocking and unlocking the cabin door using the latch mechanism device of the present invention;

The drawings described above are merely schematic and not drawn strictly to scale.

List of reference signs in the drawings and examples:

10 - Latch mechanism, including:

11 - latch shaft,

12 - Latch shaft insert, including:

121 - Latch roller,

122 - Latch rocker arm,

13 - door frame fittings, including;

131 - Latch guide groove,

132 - bottom plate;

20 - locking mechanism, comprising:

21 - lock shaft,

22 - Latch Shaft Engagement, consisting of:

221 - sleeve,

222 - Boss,

23 - Lock Shaft Engagement, including:

231 - lock block,

232 - U-shaped groove;

30 - linkage mechanism, including:

31 - Follower member (in the form of a "V" lug mounted on the latch shaft), consisting of:

31a - Latch follower end (left fork form),

31b - unlatch follower end (right fork form),

32 - drive member (installed on the lock shaft), including:

321 - driving roller,

322 - drive rocker arm;

40 - Latch limiter, comprising:

41 - Latch Shun Stop (Latch Shun Stop Screw),

42 - Latch backstop (drive roller + drive rocker arm),

43 - latch bracket (fixed on the door body of the hatch);

50 - Unlatch limit device:

51 - Unlatching forward stopper (unlatching forward stop screw + driving rocker arm),

52 - unlatching reverse stopper (unlatching reverse stop screw),

53 - unlatch bracket (fixed on the door body of the hatch);

60 - Latch shaft state display device: including:

61-target (fixed on the "V" shaped fork ears),

62-sensor (fixed on the unlatch bracket);

- Shaft lock status display device.

Detailed ways

Terms used herein for the convenience of describing the embodiments of the present invention are explained as follows.

Locking direction: refers to the movement direction of the moving components during the locking process of the lock mechanism, that is, the lock mechanism in the right view of Figure 1 moves clockwise;

Unlocking direction: refers to the movement direction of the moving member during the unlocking process of the lock mechanism, that is, the lock mechanism moves counterclockwise in the right view of Figure 1;

Latching direction; refers to the movement direction of the moving member during the latching process of the latching mechanism, that is, the latching mechanism moves counterclockwise in the right view of Figure 1;

Unlatching direction: refers to the movement direction of the moving member in the process of realizing the unlatching of the latch mechanism, that is, the latch mechanism in the right view of Figure 1 moves clockwise;

Latch position: the position when the latch mechanism makes the hatch door body fixed relative to the hatch door frame;

Locked position: the position in which the lock mechanism causes the latch mechanism to be locked;

Unlocked position: the position in which the lock mechanism causes the latch mechanism to be unlocked;

Unlatched position: the position when the latch mechanism enables the door body to move relative to the door frame;

Shun: consistent with the locking direction and the bolting direction;

Reverse: Consistent with the unlocking direction and the unlatching direction.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, so as to understand the inventive principle and beneficial technical effects of the present invention more clearly.

Figures 1 and 2 show an embodiment of a latch mechanism arrangement according to the invention. According to the present invention, the latch mechanism device includes a latch mechanism 20 and a latch mechanism 10, the movements of the latch mechanism 20 and the latch mechanism 10 are interrelated, and a single failure of the latch mechanism 20 or the latch mechanism 10 will not affect the position status of the other party. In the illustrated embodiment, the main components to realize the latching and unlocking actions include the latch roller 121, the latch rocker arm 122, the latch shaft 11, and the "V"-shaped fork ear, and the main components to realize the locking and unlocking actions include the lock shaft 21. Drive rocker arm 322 , drive roller 321 , and lock block 231 . Among them, the "V" shaped fork that starts the latch and unbolt and the driving rocker arm 322 that drives the "V" shaped fork constitutes a time-sharing system. The time sequence of the lock mechanism 20 and the latch mechanism 10 in motion meets the design requirements, that is, the hatch must be unlocked before it can be unlatched, and the hatch must be closed before it can be locked.

Therefore, according to the embodiment shown in FIGS. 1 and 2, the present invention provides a latch mechanism device for a latch and a lock between a hatch door body and a hatch door frame. The latch mechanism device includes a latch mechanism 10, The lock mechanism 20 and the interlocking mechanism 30 interlocking between the latch mechanism 10 and the lock mechanism 20 . The latch mechanism 10 has a latch shaft 11 rotatably installed on the hatch door body, and the lock mechanism 20 has a lock shaft 21 rotatably installed on the hatch door body, and the lock shaft 21 and the latch shaft 11 are configured such that their axes are opposite to each other It is fixed with the relative cabin door body. The linkage mechanism 30 includes a driven member 31 fixedly connected to the latch shaft 11 and a drive member 32 fixedly connected to the lock shaft 21, the drive member 32 is used to drive the driven member 31, and the driven member 31 includes a Latch and unlatch the latch follower end 31a and the unlatch follower end 31b.

As shown in Figure 1, in the embodiment, the drive member 32 in the linkage mechanism 30 includes a drive rocker 322 fixedly protruding radially from the lock shaft 21 and a drive roller 321 arranged at the end of the drive rocker 322, the linkage mechanism The driven member 31 in 30 is a "V"-shaped fork ear, and the left fork of the "V"-shaped fork ear is in contact with the driving roller 321 of the driving member 32 rotating in the locking direction (from the right side view of the perspective view of Fig. 1 See) is the bolt driven end 31a, and the right fork (viewed from the right view of the perspective view of Fig. 1 ) that is in contact with the driving roller 321 of the driving member 32 rotating in the unlocking direction of the "V" shaped fork is the unlatching driven end 31b.

The latch mechanism 10 also includes a latch shaft insertion part 12 that is fixedly connected to the latch shaft 11 and a door frame insertion part 13 that is fixedly connected to the hatch door frame. In the embodiment shown in FIGS. 1 and 2 , the latch shaft insert 12 includes a latch rocker arm 122 fixedly protruding radially from the latch shaft 11 and a latch roller 121 arranged at the end of the latch rocker arm 122 ; the door frame insert 13 It includes a base plate 132 fixedly connected to the door frame and a latch guide groove 131 formed on the base plate 132. The latch guide groove 131 is used for inserting the latch roller 121 in the latch position so that the latch shaft 11 is in the latch state. Therefore, the latch shaft inserting part 12 and the door frame inserting part 13 are configured such that when the latch shaft 11 is in the latch position, the latch roller 121 fits in the latch guide groove 131, so that the hatch door body is latched relative to the hatch door frame.

The lock mechanism 20 includes a latch shaft engagement member 22 and a lock shaft engagement member 23 connected in kinematic communication with the lock shaft 21 , and the latch shaft engagement member 22 may be a part of the latch shaft 11 . In the embodiment shown in Figures 1 and 2, a part of the latch shaft 11 is provided with a sleeve 221 fixed thereon, and the latch shaft engagement member 22 includes a boss 222 protruding radially from the sleeve 221; The piece 23 includes a lock block 231 protruding radially from the lock shaft 21. The lock block 231 can extend directly from the lock shaft 21, or can be connected to the lock shaft 21 through an intermediate member, so it is configured to be in transmission linkage with the lock shaft 21, so that The rotation of the lock shaft 21 can drive the lock block 231 to rotate, and the lock block 231 has a configuration capable of engaging with the boss 222 of the latch shaft 11. For this reason, the lock block 231 and the boss 222 are configured to be in the locked position. The platforms 222 can be combined with each other. The configuration of the locking block 231 shown in FIG. 3 is a U-shaped groove 232, and the boss 222 is stopped by the locking block 231 in the U-shaped groove 232 to prevent the latch shaft 11 from rotating in the unlocking direction. . For this reason, the latch shaft engagement member 22 and the lock shaft engagement member 23 are configured such that: when the lock shaft 21 is rotated to the locked position, as shown in FIG. In the groove 232, the latch shaft 11 is locked in the latch position.

Therefore, in order to realize latching and unlatching of the hatch, the "V" shaped lugs on the latch shaft 11 and the drive member 32 on the lock shaft 21 are configured as follows:

When bolting, the lock shaft 21 rotates around its axis in the locking direction, so that the driving roller 321 of the driving member 32 on it contacts and pushes the bolt driven end 31a (left fork) of the "V" shaped fork ear and Therefore, start the latch shaft 11 to rotate around the axis of the latch shaft 11 along the latch direction, so that the latch mechanism 10 reaches the latch position, that is, the latch shaft 11 is in the latch state, and then, the continuation of the rotation of the lock shaft 21 makes the driving of the drive member 32 The roller 321 moves relative to the latch follower end 31a (left fork) of the "V"-shaped fork ear and no longer drives the left fork, and makes the lock mechanism 20 reach the locked position, as shown in FIG. 3 ;

When unlocking, the lock shaft 21 rotates around its axis in the unlocking direction, and the driving roller 321 of the driving member 32 on it moves relative to the left fork of the "V"-shaped fork ear, so that the lock mechanism 20 reaches the unlocking position, and then the lock shaft 21 continues to rotate so that the driving roller 321 of the driving member 32 moves between the two prongs of the “V” shape to contact and push the unlatching driven end 31b (right fork) of the driven member 31, thereby activating the latch shaft 11 Rotate around the axis of the latch shaft 11 in the unlatching direction, so that the latch mechanism 10 reaches the unlatching position, as shown in FIG. 2 .

As above, the span between the left fork of the latch follower end 31a and the right fork of the unlatch follower end 31b, that is, the distance between the points of contact with the drive roller 321 of the drive member 32 depends on the time of locking and unlatching. Preferably, it satisfies the condition that "the hatch door must be unlocked before it can be unlatched, and the hatch door must be latched before it can be locked during the closing process".

In addition, as shown in Figures 1 and 2, the latch mechanism 10 in the latched position and the unlatched position have limit devices to constrain the movement of the latch mechanism 10, and the limit of the latched position is a two-way limit, and one side is a latch stop screw Limit, the other side is the limit of the driving roller 321, the limit of the unlatching position is also a two-way limit, both sides are the limit of the unlatching stop screw, one is the unlatching stop screw, and the other is the unlatching stop screw. Latch reverse stop screw, all stop screws can adjust the amount of protrusion along the screw axis, so that the gap between the stop screw nail head and the contact surface of the "V"-shaped fork ear meets the requirements. Both sides of the "V"-shaped fork lugs in the latch mechanism 10 in the latched state and the unlatched state are constrained by the limit device, and then the entire latch mechanism 10 is constrained to ensure that the latch mechanism 10 is in the correct position.

Therefore, according to the embodiment shown in FIGS. 1 and 2 , the latch mechanism device of the present invention also includes a bolt-on limiting device 40 and an unlatching limiting device 50 . The two-way limit of the fork ear is two-way, that is, the movement of the "V"-shaped fork is limited in the direction of latching and the direction of unlatching respectively. Two-way limit, that is, limit the movement of the "V"-shaped fork ear in the latching direction and the unlatching direction respectively.

Specifically, the latch limit device 40 includes a latch forward stopper 41 fixed relative to the shaft center of the latch shaft 11 and a latch reverse stopper 42 fixed relative to the lock shaft 21 . In the embodiment shown in FIGS. 1 and 2 , the latching stop member 41 includes a latching bracket 43 fixed to the hatch door body and a latching stop bolt that is adjustably fixed to the latching bracket 43 . The latch stopper bolt is configured so that if the "V" shaped lug at the bolted position is further rotated in the bolting direction, it can stop the bolt driven end 31a of the left fork of the "V" shaped lug so that Prevent the "V" shaped fork ear from rotating along the bolt-on direction; the upper bolt backstop 42 is a driving roller 321, and the driving roller 321 is constructed so that when the "V"-shaped fork ear at the bolt-on position rotates along the unbolt direction, it can The unlatching follower end 31b of the right fork of the "V" shaped fork ear is stopped to prevent the "V" shaped fork ear from rotating in the unlatching direction.

The unlocking limiting device 50 includes an unlocking stopper 51 fixed relative to the lock shaft 21 and an unlocking stopper fixed relative to the axis of the latch shaft 11 . In the embodiment shown in FIGS. 1 and 2 , the unlatching stopper 51 includes an unlatching stop bolt that is adjustably fixed to the driving rocker arm 322 , and the unlatching stop bolt is configured to, if When the "V"-shaped fork ear at the position rotates along the bolt-on direction, it can stop the bolt-driven end 31a of the left fork of the "V"-shaped fork ear to prevent the "V"-shaped fork ear from rotating along the bolt-on direction; The unlatching reverse stopper 52 includes an unlatching bracket 53 fixed on the cabin door body and an unlatching reverse stop bolt that is adjustably fixed on the unbolt bracket 53, and the unlatching reverse stop bolt is configured to, if When the "V"-shaped fork ear at the position is further rotated in the unlatching direction, it can stop the unlatching follower end 31b of the right fork of the "V"-shaped fork ear to prevent the "V"-shaped fork ear from rotating in the unlatching direction .

The lock block 231 in the lock mechanism 20 can lock the latch mechanism 10, and can indicate the position of the lock mechanism 20 at the same time. By pasting or spraying instruction words on the designated area of the lock block 231, the position of the lock block 231 changes with the movement of the lock mechanism 20, and the lock The character position on the block 231 changes accordingly to realize the indication of the locked state and unlocked state of the lock mechanism 20 .

The target 61 corresponding to the sensor 62 can be installed on the "V" shape fork ear, and the target 61 is rigidly connected with the "V" shape fork ear. The position is the reference, and the sensor 62 is reasonably arranged to realize that the latch mechanism 10 is in the latched state, and the sensor 62 can sense the target 61. If the latch mechanism 10 is not in the latched state, the sensor 62 cannot sense the target 61, and a warning message is reported. The latch monitoring mechanism can ensure that the sensor 62 accurately feeds back the status information of the latch mechanism 10 to the door signal system, and the pilot can understand the position status of the latch mechanism 10 and whether the latch mechanism 10 is in place according to the information of the door signal system.

To this end, the latch mechanism device according to the present invention further includes a latch shaft state display device 60 and a lock shaft state display device. The latch shaft state display device 60 includes a target 61 fixed to the "V"-shaped fork ear and a sensor 62 fixed to the unlatch bracket 53 , the target 61 and the sensor 62 are configured such that the sensor 62 can provide information on the position of the latch shaft 11 . The lock shaft state display device is located on the lock block 231, and is configured to provide information on the position of the lock shaft 21.

As shown in Figure 4, it schematically shows a block diagram of the steps of latching and locking the cabin door according to the latch mechanism device of the present invention, these steps are:

1) Rotate the lock shaft 21 in the lock mechanism 20 in the locking direction,

The rotation of the lock shaft 21 makes the lock block 231 of the lock mechanism 20 and the driving rocker arm 322 of the driving member 32 and the rotation,

The drive rocker arm 322 makes the drive roller 321 provided on the drive rocker arm 322 contact and push the latch follower end 31a of the follower member 31 in the form of a "V"-shaped fork,

The bolt driven end 31a makes the "V"-shaped fork ear drive the bolt shaft 11 to rotate in the direction of the bolt,

The latch shaft 11 drives the latch rocker arm 122 arranged on the latch shaft 11 to rotate to the latch position,

In the latch position, the latch roller 121 arranged on the latch rocker arm 122 is inserted into the latch guide groove 131, so that the latch shaft 11 is in the latch state, thereby preventing the door body from moving in the direction away from the door frame;

2) Continue to rotate the lock shaft 21 along the locking direction, the driving roller 321 of the driving member 32 moves relative to the latch driven end 31a of the driven member 31, and the lock block 231 of the lock mechanism 20 rotates to the locked position,

In the locked position, the lock block 231 engages with the boss 222 of the latch shaft 11, so that the latch shaft 11 is in a locked state, thereby preventing the latch shaft 11 from rotating in the unlocking direction.

As shown in FIG. 5 , it schematically shows a block diagram of the steps of unlocking and unlatching the cabin door according to the latch mechanism device of the present invention, and these steps are:

1) Rotate the lock shaft 21 in the lock mechanism 20 in the unlocking direction,

The rotation of the lock shaft 21 makes the driving roller 321 of the driving member 32 arranged on the driving rocker arm 322 move relative to the latch driven end 31a of the driven member 31 of the “V” shape fork ear form, and the lock mechanism 20 The lock block 231 is rotated to the unlocked position,

In the unlocked position, the lock block 231 is disengaged from the boss 222 of the latch shaft 11, so that the latch shaft 11 is in an unlocked state, thereby allowing the latch shaft 11 to rotate in the unlocking direction;

2) Continue to rotate the lock shaft 21 in the unlocking direction,

The driving roller 321 contacts and pushes the unlatching follower end 31b of the "V" shaped fork ear,

The unlatching driven end 31b makes the "V"-shaped fork lug drive the latch shaft 11 to rotate in the unlatching direction,

The latch shaft 11 drives the latch rocker arm 122 arranged on the latch shaft 11 to rotate to the unlatching position,

In the unlatched position, the latch roller 121 provided on the latch rocker arm 122 withdraws from the latch guide groove 131, so that the latch shaft 11 is in an unlatched state, thereby allowing the door body to move away from the door frame.

The specific implementation manners of the present invention have been described above according to the accompanying drawings, but those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, and these changes and modifications all fall within the protection scope of the present invention.

Claims

A latch mechanism device for a latch and a lock between a hatch door body and a hatch door frame, the latch mechanism device comprising:

A latch mechanism (10), the latch mechanism (10) comprising:

A latch shaft (11) rotatably mounted on the hatch door body;

Locking mechanism (20), described locking mechanism (20) comprises:

A lock shaft (21) rotatably installed on the door body of the cabin door, the lock shaft (21) is configured such that the axis of the lock shaft (21) is fixed relative to the axis of the latch shaft (11);

Linkage mechanism (30), described linkage mechanism (30) comprises:

a follower member (31) fixedly connected to said latch shaft (11), said follower member (31) comprising a latch follower end (31a) and an unlatch follower end (31b), and

fixedly connected to the drive member (32) of the lock shaft (21), the drive member (32) drives the driven member (31) to rotate,

Wherein, the driving member (32) and the driven member (31) are configured as:

When the bolt is locked, the lock shaft (21) rotates around its axis in the locking direction, so that the lock mechanism rotates, and the driving member (32) on it contacts and pushes the driven member The latch driven end (31a) of (31) and thus the latch shaft (11) rotates around the axis of the latch shaft (11) in the latching direction so that the latch mechanism (10) reaches The latch position, then, the driving member (32) moves relative to the driven member (31), and the lock mechanism (20) reaches the locked position;

When unlocking and unlocking, the lock shaft (21) rotates around its axis in the unlocking direction, the driving member (32) moves relative to the driven member (31), and the lock mechanism (20) rotates to the unlocking position , then, the drive member (32) moves to contact and pushes the unlatching driven end (31b) of the driven member (31) and thus the latch shaft (11) rotates around the The shaft center of the latch shaft (11) rotates so that the latch mechanism (10) reaches the unlatching position.
The latch mechanism device of claim 1, wherein:

The distance between the points where the latch follower end (31a) and the unlatch follower end (31b) come into contact with the drive member (32) is set according to the time of locking and the time of unlatching .
The latch mechanism device of claim 2, wherein:

The driven member (31) is a "V"-shaped fork ear, and a fork of the "V"-shaped fork ear that is in contact with the driving member (32) that rotates in the locking direction is the slave of the latch. The driving end (31a), the fork of the "V"-shaped fork ear that is in contact with the driving member (32) that rotates in the unlocking direction is the unlocking driven end (31b),

The driving member (32) includes a driving rocker arm (322) fixedly protruding radially from the lock shaft (21) and a driving roller (321) arranged at the end of the driving rocker arm (322).
The latch mechanism device of claim 3, wherein:

The latch mechanism (10) also includes:

a latch shaft insert (12) fixedly connected to said latch shaft (11), and

A door frame insert (13) fixedly connected to the hatch door frame,

The latch shaft insert (12) and the door frame insert (13) are configured such that when the latch mechanism (10) is in the latch position, the latch shaft insert (12) and the door frame insert (13) mating together, so that the hatch door body is latched relative to the hatch door frame; the lock mechanism (20) includes:

a latch shaft engaging member (22), said latch shaft engaging member (22) being at least a part of said latch shaft (11), and

A lock shaft engaging member (23) connected to the lock shaft (21),

The latch shaft engaging part (22) and the lock shaft engaging part (23) are configured such that when the lock mechanism (20) is in the locked position, the lock shaft engaging part (23) and the latch The shaft engaging pieces (22) are joined together so that the latch shaft (11) is locked in the latched position.
The latch mechanism device of claim 4, wherein:

The latch shaft insertion part (12) includes a latch rocker arm (122) fixedly protruding radially from the latch shaft (11) and a latch roller (121) arranged at the end of the latch rocker arm (122);

The door frame insert (13) includes a bottom plate (132) fixedly connected to the hatch door frame and a latch guide groove (131) formed on the bottom plate (132), and the latch guide groove (131) is configured to The latch roller (121) at the latch position can be inserted into the latch guide groove (131);

The latch shaft engagement member (22) includes a boss (222) protruding radially from the latch shaft (11);

The lock shaft engagement member (23) includes a lock block (231) radially protruding from the lock shaft (21), the rotation of the lock shaft (21) can drive the lock block (231) to rotate, the The lock block (231) has a configuration capable of engaging with the boss (222) of the latch shaft (11), and the lock block (231) and the boss (222) are configured to lock on the latch shaft (11). The locking block (231) and the boss (222) can be combined with each other to prevent the latch shaft (11) from rotating in the unlocking direction.
The latch mechanism device of claim 5, wherein:

The configuration of the locking block (231) is a U-shaped groove (232) capable of receiving the boss (222).
The latch mechanism device of claim 3, wherein:

The latch mechanism device also includes:

A bolt-on limiting device (40), in the bolt-on position, the bolt-on limiting device (40) performs two-way limiting of the latching direction and the unlocking direction on the driven member (31). bits; and

The unlocking limiting device (50), in the unlocking position, the unlocking limiting device (50) performs the bidirectional limiting on the driven member (31).
The latch mechanism device of claim 7, wherein:

The latch limiter (40) includes:

A bolt-up stopper (41) fixed relative to the axis center of the latch shaft (11). movement in the latching direction is limited, and

The latch backstop (42) fixed relative to the lock shaft (21), in the latch position, the latch backstop (42) is opposite to the driven member (31) along the The movement in the unlocking direction is limited;

The unlocking limiting device (50) includes:

An unlatching stopper (51) fixed relative to the lock shaft (21). Movement in the bolting direction is limited, and

An unlatching backstop (52) fixed relative to the axis center of the latch shaft (11), in the unlatching position, the unlatching backstop (52) is opposite to the driven member (31) Movement in the unlatching direction is limited.
The latch mechanism device of claim 8, wherein:

The latching stopper (41) includes:

a latch bracket (43) fixed to the hatch body, and

a bolt that is adjustably fixed to the bolt bracket (43), the bolt that is configured so that the follower member (31) in the bolt position moves along the upper The upper latch driven end (31a) capable of stopping the driven member (31) when the latch rotates in the direction;

Described upper bolt reverse stopper (42) is:

The driving roller (321), the driving roller (321) is configured to stop the driven member (31) when the driven member (31) in the latch position rotates in the unlatching direction said latch follower end (31a) of );

The unlatching stopper (51) includes:

an unlatching stop bolt that is adjustably fixed to the driving rocker arm (322), and the unlatching stop bolt is configured such that the driven member (31) in the unlatching position moves along the upper The upper latch driven end (31a) capable of stopping the driven member (31) when the latch rotates in the direction;

The unlatching backstop (52) includes:

an unlatch bracket (53) fixed to the hatch body, and

An unlatching counter-stop bolt that is adjustably fixed to the unlatching bracket (53), and the unlatching counter-stop bolt is configured so that the driven member (31) at the unlatching position moves along the unlatching position. The unlatching driven end (31b) of the driven member (31) can be stopped when the latch direction is rotated.
The latch mechanism device of claim 4, wherein:

The latch mechanism device also includes:

A latch shaft status display device (60), the latch shaft status display device (60) comprising a target (61) fixed to the driven member (31) and a sensor fixed relative to the shaft center of the latch shaft (11) (62), the target (61) and the sensor (62) are configured such that the sensor (62) can provide information on the position of the latch shaft (11);

A lock shaft state display device, the lock shaft state display device is located on the lock shaft engaging member (23), and is configured to provide information on the position of the lock shaft (21).
Adopting the latch mechanism device as claimed in claim 1 to carry out the method for latching and locking, the method comprises the following steps:

1) Rotate the lock shaft (21) in the lock mechanism (20) in the locking direction, the drive member (32) of the lock mechanism (20) and the linkage mechanism (30) that is arranged on the lock shaft (21) Rotate, so that the driving member (32) drives the driven member (31) of the linkage mechanism (30) that is arranged on the latch shaft (11) to rotate, so that the driven member (31) drives the The latch mechanism (10) of the latch shaft (11) rotates to the latch position along the latch direction, so that the latch shaft (11) is in the latch state;

2) Continue to rotate the lock shaft (21) in the locking direction, the driving member (32) of the linkage mechanism (30) moves relative to the driven member (31) of the linkage mechanism (30), Moreover, the lock shaft (21) drives the lock mechanism (20) to rotate to the locked position, so that the latch shaft (11) is in the locked state.
The method for bolting and locking a lock as claimed in claim 11, said method further adopts the latch mechanism device as claimed in claim 5,

In said step 1):

The rotation of the lock shaft (21) rotates the lock block (231) of the lock mechanism (20) and the drive rocker arm (322) of the drive member (32), and the drive rocker arm (322) makes the setting The drive roller (321) on the drive rocker arm (322) contacts and pushes the latch follower end (31a) of the follower member (31) in the form of a "V" shaped lug,

The bolt driven end (31a) makes the "V"-shaped fork lug drive the bolt shaft (11) to rotate, so that the bolt rocker arm (122) arranged on the bolt shaft (11) rotates to the latch shaft (11). Location,

In the latch position, the latch roller (121) arranged on the latch rocker arm (122) is inserted into the latch guide groove (131), thereby preventing the hatch door body from moving in the direction away from the hatch door frame ;

In said step 2):

The driving roller (321) moves relative to the latch driven end (31a), and the lock block (231) of the lock mechanism (20) rotates to the locked position,

In the locked position, the lock block (231) engages with the boss (222) of the latch shaft (11), thereby preventing the latch shaft (11) from rotating in the unlocking direction.
The method for unlocking and unlocking using the latch mechanism device according to claim 1, said method comprising the steps of:

1) Rotate the lock shaft (21) in the lock mechanism (20) in the unlocking direction, and the drive member (32) that is arranged on the lock shaft (21) of the lock mechanism (20) and the linkage mechanism (30) rotates , so that the drive member (32) moves relative to the driven member (31) of the linkage mechanism (30) that is arranged on the latch shaft (11), and the lock shaft (21) drives the lock mechanism (20 ) rotate to the unlocked position, thereby releasing the latch shaft (11), so that the latch shaft (11) is in an unlocked state;

2) Continue to rotate the lock shaft (21) in the unlocking direction, the driving member (32) of the linkage mechanism (30) drives the driven member (31) to rotate, thus the driven member (31) drives A latch mechanism (10) including the latch shaft (11) rotates in an unlatching direction to an unlatching position, so that the latch shaft (11) is in an unlatched state.
The method for unlocking and unlocking according to claim 13, said method further adopts the latch mechanism device according to claim 5,

In said step 1):

The rotation of the lock shaft (21) makes the drive roller (321) of the drive member (32) arranged on the drive rocker arm (322) relative to the driven member (31) in the form of a "V" fork ear. The driven end (31a) of the latch moves, and the lock block (231) of the lock mechanism (20) turns to the unlocked position,

In the unlocked position, the lock block (231) is disengaged from the boss (222) of the latch shaft (11), thereby allowing the latch shaft (11) to rotate in the unlocking direction;

In said step 2):

The driving roller (321) contacts and pushes the unlatching follower end (31b) of the "V" shaped fork ear,

The unlatching driven end (31b) makes the "V"-shaped fork lug drive the latch shaft (11) to rotate, so that the latch rocker arm (122) arranged on the latch shaft (11) rotates to the position of unlatching Location,

In the unlatched position, the latch roller (121) provided on the latch rocker arm (122) withdraws from the latch guide groove (131), thereby allowing the hatch door body to move away from the hatch door frame .