Large cabin door movement state indicating device

Abstract

The application belongs to the technical field of aircraft cabin door structure design, and particularly relates to a large cabin door motion state indicating device. The cam control module comprises a connecting shaft, a first cam, a second cam and a pull rod arranged on the connecting shaft, and the pull rod is connected with the cabin door. The end button module for indicating the opening state of the cabin door comprises a first end button, a first end button pressing block mechanism and a first support. The end button module for indicating the closing state of the cabin door comprises a second end button, a second end button pressing block mechanism, a second reset spring and a second support. The large cabin door motion state indicating device uses one set of mechanism, two end buttons and outputs three kinds of electric signal combinations, can accurately indicate the motion state of the cabin door and coordinately link with other cabin doors, and solves the problem that the structure deformation and vibration in the high-speed airflow easily cause the end button to be inaccurately indicated by taking compensation measures.

Description

Technical Field

[0001] This application belongs to the field of aircraft cabin door structure design technology, and specifically relates to a large cabin door movement status indication device. Background Technology

[0002] A hatch movement status indicator is a device used to indicate the movement status of a hatch. This device is typically installed on the hatch and can monitor its movement status in real time, presenting this information visually to the operator. This helps the operator to promptly identify and address potential problems, ensuring the safety and reliability of the hatch.

[0003] Existing technologies cannot accurately indicate all movement states of a hatch and coordinate with other hatches using a single switch mechanism, thus failing to meet the indication requirements for the complex movement states of large hatches. Furthermore, during use, if the structure experiences harsh operating environments such as vibration and deformation, false indications are likely to occur.

[0004] Therefore, it is desirable to have a technical solution to overcome or at least mitigate one of the aforementioned defects of the prior art. Summary of the Invention

[0005] The purpose of this application is to provide a large hatch movement status indication device to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] A large hatch movement status indication device, comprising:

[0008] A cam control module, comprising a connecting shaft, on which a first cam, a second cam, and a pull rod are mounted, the pull rod being connected to a hatch.

[0009] A terminal switch module for indicating the open state of the hatch, comprising a first terminal switch, a first switch pressing mechanism, and a first bracket, wherein...

[0010] The first bracket is provided with a first fixed mounting part and a first rotating mounting part;

[0011] The first endpoint switch is fixedly installed on the first fixed mounting part;

[0012] The first switch pressing block mechanism is rotatably mounted on the first rotating mounting part in the middle. The first switch pressing block mechanism is provided with a first roller and a first pressing block at both ends. The first roller is connected to the first cam. Under the drive of the first cam, the first pressing block can press against the first end switch. The first pressing block is equipped with a first return spring.

[0013] A terminal switch module indicating the closed state of the hatch includes a second terminal switch, a second switch pressing mechanism, a second return spring, and a second bracket.

[0014] The second bracket is provided with a second fixed mounting part and a second rotating mounting part;

[0015] The second endpoint switch is fixedly installed on the second fixed mounting part;

[0016] The second switch pressing block mechanism is rotatably mounted on the second rotating mounting part in the middle. The two ends of the second switch pressing block mechanism are respectively provided with a second roller and a second pressing block. The second roller is connected to the second cam. Under the drive of the second cam, the second pressing block can press against the second end switch. The second pressing block is equipped with a second return spring.

[0017] In at least one embodiment of this application, a mounting base is also included, wherein,

[0018] The connecting shaft of the cam control module is mounted on the mounting base via a shaft seat;

[0019] The first bracket is fixedly installed on the mounting base;

[0020] The second bracket is fixedly installed on the mounting base, and the second bracket is arranged parallel to the first bracket.

[0021] In at least one embodiment of this application,

[0022] The first endpoint switch is mounted on the first bracket by bolts;

[0023] The first switch pressing mechanism is mounted on the first bracket via a pin.

[0024] The second endpoint switch is mounted on the second bracket by bolts;

[0025] The second switch pressing mechanism is mounted on the second bracket via a pin.

[0026] In at least one embodiment of this application,

[0027] A first limiting rod is installed on the first bracket to limit the rotation angle of the first switch pressing block mechanism;

[0028] The second bracket is equipped with a second limiting rod, which is used to limit the rotation angle of the second switch pressing block mechanism.

[0029] In at least one embodiment of this application,

[0030] The first reset spring includes two springs, which are symmetrically arranged on both sides of the first bracket via U-shaped parts. The two first reset springs are connected to the first pressure block via a stop block.

[0031] The second reset spring comprises two springs, which are symmetrically arranged on both sides of the second bracket via U-shaped parts. The two second reset springs are connected to the second pressure block via a stop block.

[0032] In at least one embodiment of this application,

[0033] When the first and second endpoint switches are simultaneously disconnected, the hatch is in the closed state;

[0034] When the second endpoint switch is turned on and the first endpoint switch is turned off, the hatch is in motion;

[0035] When the first and second endpoint switches are turned on simultaneously, the hatch is in the open state.

[0036] In at least one embodiment of this application,

[0037] A design compensation margin is provided at the contact point between the first cam and the first roller;

[0038] The second cam has a design compensation margin at the contact point with the second roller.

[0039] The invention has at least the following beneficial technical effects:

[0040] The large hatch motion status indication device of this application uses one mechanism, two switches, and outputs three combinations of electrical signals, which can accurately indicate the motion status of the hatch and coordinate with other hatches. The design incorporates compensation measures to solve the problem that structural deformation and vibration in high-speed airflow can easily cause false indications of the switches. Attached Figure Description

[0041] Figure 1 This is an angle view of a large hatch movement status indication device according to one embodiment of this application;

[0042] Figure 2 This is another angle view of a large hatch movement status indicator device according to one embodiment of this application;

[0043] Figure 3 This is a schematic diagram of the interaction between the roller and the cam when the hatch is closed, according to one embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the interaction between the roller and the cam during the movement of the hatch, according to one embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the interaction between the roller and the cam when the hatch is in the open state according to one embodiment of this application.

[0046] in:

[0047] 1-End point switch module indicating the open state of the hatch; 11-First end point switch; 12-First switch pressing mechanism; 13-First return spring; 14-First bracket; 2-End point switch module indicating the closed state of the hatch; 21-Second end point switch; 22-Second switch pressing mechanism; 23-Second return spring; 24-Second bracket; 3-Cam control module; 4-Mounting base. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. 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 this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0050] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0051] This application provides a large hatch movement status indication device, including: a cam control module 3, an end-point switch module 1 indicating the hatch opening status, and an end-point switch module 2 indicating the hatch closing status.

[0052] Specifically, such as Figure 1 , 2As shown, the cam control module 3 includes a connecting shaft, on which a first cam, a second cam, and a pull rod are mounted. The pull rod is connected to the hatch, and the cam control module 3 is linked to the hatch via the pull rod. The first cam and the second cam have different shapes.

[0053] The endpoint switch module 1, which indicates the opening status of the hatch, includes a first endpoint switch 11, a first switch pressing mechanism 12, and a first bracket 14. The first bracket 14 has a first fixed mounting portion and a first rotating mounting portion. The first endpoint switch 11 is fixedly mounted on the first fixed mounting portion by bolts. The middle part of the first switch pressing mechanism 12 is rotatably mounted on the first rotating mounting portion via a pin. The two ends of the first switch pressing mechanism 12 are respectively provided with a first roller and a first pressing block. The first roller is connected to a first cam, and under the drive of the first cam, the first pressing block can press against the first endpoint switch 11. The first pressing block is equipped with a first return spring 13. Through the cooperation of the cam control module 3, which is linked to the hatch, and the first switch pressing mechanism 12, the movement status of the hatch is transmitted to the first endpoint switch 11.

[0054] The endpoint switch module 2, which indicates the closed state of the hatch, includes a second endpoint switch 21, a second switch pressing mechanism 22, a second return spring 23, and a second bracket 24. The second bracket 24 has a second fixed mounting portion and a second rotating mounting portion. The second endpoint switch 21 is bolted to the second fixed mounting portion. The middle part of the second switch pressing mechanism 22 is rotatably mounted on the second rotating mounting portion via a pin. The two ends of the second switch pressing mechanism 22 are respectively provided with a second roller and a second pressing block. The second roller is connected to a second cam, and under the drive of the second cam, the second pressing block can press against the second endpoint switch 21. The second pressing block is equipped with a second return spring 23. Through the cooperation of the cam control module 3, which is linked to the hatch, and the second switch pressing mechanism 22, the movement state of the hatch is transmitted to the second endpoint switch 21.

[0055] The large hatch movement status indicator of this application is preferably integrated into a mounting base 4. The connecting shaft of the cam control module 3 is mounted on the mounting base 4 via a shaft seat. A first bracket 14 is fixedly mounted on the mounting base 4. A second bracket 24 is fixedly mounted on the mounting base 4, and the second bracket 24 is arranged parallel to the first bracket 14. In this embodiment, both the first bracket 14 and the second bracket 24 include two parallel support plates with a space between them. The bottoms of the two support plates are fixedly connected to the mounting base 4 by screws. Matching bolt holes are provided at the ends of the two support plates away from the cam control module 3 for installing the corresponding endpoint switch, and matching shaft holes are provided at the ends of the two support plates near the cam control module 3 for installing the corresponding switch pressing mechanism. Advantageously, in this embodiment, a first limiting rod is installed on the first bracket 14 near the shaft hole to limit the rotation angle of the first switch pressing mechanism 12 and avoid excessive pressure that could damage the first end switch 11; a second limiting rod is installed on the second bracket 24 near the shaft hole to limit the rotation angle of the second switch pressing mechanism 22 and avoid excessive pressure that could damage the second end switch 21.

[0056] In a preferred embodiment of this application, two first reset springs 13 are symmetrically arranged on both sides of the first bracket 14 via U-shaped members. The two first reset springs 13 are connected to the first pressure block via a stop block. When the first pressure block presses against the first terminal switch 11 and the first terminal switch 11 is turned on, the first switch pressure block mechanism 12 is reset under the action of the stop block of the compression spring. Two second reset springs 23 are symmetrically arranged on both sides of the second bracket 24 via U-shaped members. The two second reset springs 23 are connected to the second pressure block via a stop block. When the second pressure block presses against the second terminal switch 21 and the second terminal switch 21 is turned on, the second switch pressure block mechanism 22 is reset under the action of the stop block of the compression spring.

[0057] The large hatch movement status indication device of this application is linked to the hatch via the lever of the cam control module 3. During hatch movement, the corresponding cam controls the switch pressing block mechanism of the endpoint switch module to turn the corresponding endpoint switch on or off, thereby issuing electrical signals indicating that the hatch is open, closed, or in motion. Specifically, when the first endpoint switch 11 indicating the hatch is open and the second endpoint switch 21 indicating the hatch is closed are both off, the hatch is in the closed state; when the second endpoint switch 21 indicating the hatch is closed is on and the first endpoint switch 11 indicating the hatch is open is off, the hatch is in motion; when the first endpoint switch 11 indicating the hatch is open and the second endpoint switch 21 indicating the hatch is closed are both on, the hatch is in the open state. It is understood that the cams used in the cam control module 3 to cooperate with the endpoint switch modules indicating the hatch's open and closed states are different, and the indication of different hatch states is achieved through the cooperation of rollers and cams. Figure 3 As shown, when both rollers are simultaneously on their corresponding cams, both switches are in a de-energized state, and the hatch status indicator is closed. Figure 4 As shown, when one roller is on the cam and the other is below the cam, one switch is in the off state and the other switch is in the on state. At this time, the hatch status indicator shows that it is in the process of opening and closing. Figure 5 As shown, when both rollers are simultaneously under their corresponding cams, both switches are simultaneously on, and the hatch status indicator is in the open state.

[0058] In a preferred embodiment of this application, the cam control module 3 is designed with a design compensation margin at the contact points between the two cams and the rollers of the switch pressing mechanism. When the switch mechanism is in the open or closed state of the cabin door, even if the cabin door rotates slightly due to aircraft vibration, it will not cause the switch pressing mechanism to move, thereby avoiding the output of incorrect cabin door movement status indication signals.

[0059] The large door motion status indicator of this application can indicate the motion status of a large outward-opening complex curved door when it is opened and closed in a complex operating environment and in a high-speed airflow, and can realize linkage with other related doors; it can prevent the problem of false indication of the end switch caused by aircraft structural deformation and vibration due to complex and harsh operating environment.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A large hatch movement status indication device, characterized in that, include: The cam control module (3) includes a connecting shaft, on which a first cam, a second cam, and a pull rod are provided, and the pull rod is connected to the hatch. The terminal switch module (1) indicating the opening state of the hatch includes a first terminal switch (11), a first switch pressing mechanism (12), and a first bracket (14). The first bracket (14) is provided with a first fixed mounting part and a first rotating mounting part; The first terminal switch (11) is fixedly installed on the first fixed mounting part; The first switch pressing block mechanism (12) is rotatably mounted on the first rotating mounting part in the middle. The first switch pressing block mechanism (12) is provided with a first roller and a first pressing block at both ends. The first roller is connected to the first cam. Under the drive of the first cam, the first pressing block can press against the first end switch (11). The first pressing block is equipped with a first return spring (13). The endpoint switch module (2) indicating the closed state of the hatch includes a second endpoint switch (21), a second switch pressing mechanism (22), a second return spring (23), and a second bracket (24). The second bracket (24) is provided with a second fixed mounting part and a second rotating mounting part; The second endpoint switch (21) is fixedly installed on the second fixed mounting part; The middle part of the second switch pressing block mechanism (22) is rotatably mounted on the second rotating mounting part. The two ends of the second switch pressing block mechanism (22) are respectively provided with a second roller and a second pressing block. The second roller is connected to the second cam. Under the drive of the second cam, the second pressing block can press against the second end switch (21). The second pressing block is equipped with a second return spring (23). The cams used in the cam control module (3) to cooperate with the terminal switch module indicating the opening and closing status of the hatch are different. The different states of the hatch are indicated by the cooperation of the rollers and the cams. When both rollers are on the corresponding cams at the same time, both switches are in the off state at the same time, and the hatch status is indicated as closed. When one roller is on the cam and the other roller is under the cam, one switch is in the off state and the other switch is in the on state, and the hatch status is indicated as in the opening and closing process. When both rollers are under the corresponding cams at the same time, both switches are in the on state at the same time, and the hatch status is indicated as open.

2. The large hatch movement status indication device according to claim 1, characterized in that, It also includes a mounting base (4), wherein, The connecting shaft of the cam control module (3) is mounted on the mounting base (4) via a shaft seat; The first bracket (14) is fixedly installed on the mounting base (4); The second bracket (24) is fixedly installed on the mounting base (4), and the second bracket (24) is arranged parallel to the first bracket (14).

3. The large hatch movement status indication device according to claim 2, characterized in that, The first terminal switch (11) is mounted on the first bracket (14) by bolts; The first switch pressing mechanism (12) is mounted on the first bracket (14) by a pin; The second terminal switch (21) is bolted to the second bracket (24); The second switch pressing mechanism (22) is mounted on the second bracket (24) by a pin.

4. The large hatch movement status indication device according to claim 3, characterized in that, A first limiting rod is installed on the first bracket (14) to limit the rotation angle of the first switch pressing block mechanism (12); A second limiting rod is installed on the second bracket (24) to limit the rotation angle of the second switch pressing block mechanism (22).

5. The large hatch movement status indication device according to claim 3, characterized in that, The first reset spring (13) includes two springs, which are symmetrically arranged on both sides of the first bracket (14) by means of a U-shaped piece. The two first reset springs (13) are connected to the first pressure block by means of a stop block. The second reset spring (23) includes two springs, which are symmetrically arranged on both sides of the second bracket (24) via U-shaped parts. The two second reset springs (23) are connected to the second pressure block via a stop block.

6. The large hatch movement status indication device according to claim 1, characterized in that, A design compensation margin is provided at the contact point between the first cam and the first roller; The second cam has a design compensation margin at the contact point with the second roller.

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