Helicopter cabin door opening and closing assisting structure

Abstract

The application discloses a helicopter cabin door opening and closing auxiliary structure, which belongs to the field of helicopter cabin doors and comprises a cabin door body and an auxiliary assembly. A handle is arranged on the cabin door body, and the side opposite to the handle is provided with a cabin door shaft connected with a helicopter. The auxiliary assembly is arranged below the handle. The auxiliary assembly is horizontally arranged and comprises a mounting piece, an outer rod and a movable inner rod. The mounting piece is connected with the inner wall of the cabin door body. One end of the outer rod is movably connected with the mounting piece, and the other end of the outer rod is sleeved with the outer portion of the movable inner rod. The end of the movable inner rod away from the outer rod is provided with a pulling ball. The helicopter cabin door opening and closing auxiliary structure has the advantages that the operable auxiliary assembly is arranged on the inner side of the cabin door, an operator only needs to pull the pulling ball at the end portion of the movable inner rod in the cabin to close the cabin door, the body is prevented from being put out of the cabin, the operation risk is reduced, and the safety of the personnel is ensured.

Description

Technical Field

[0001] This application relates to the field of helicopter doors, and more specifically, to an auxiliary structure for opening and closing helicopter doors. Background Technology

[0002] Helicopters, as an important means of air transport, are widely used in military operations, emergency rescue, cargo transport, and tourism due to their unique advantages such as vertical takeoff and landing and high maneuverability. The helicopter door, as a crucial component, directly affects the efficiency of helicopter operations and the safety of personnel through the ease and safety of its opening and closing. In existing helicopter door designs, the door typically opens outwards. When the door is fully open, the handle moves away from the cabin as the door unfolds. In practice, when closing the door, the operator often has to pull on the handle located at a distance. This operation requires the operator to extend most of their body outside the cabin to reach the handle and apply sufficient pull force; however, this method poses significant safety hazards. In the environment where helicopters are parked or operating, various uncertainties may exist. With the operator's body extended significantly outside the cabin, they are highly susceptible to losing balance, leading to falls or collisions with surrounding objects. Utility Model Content

[0003] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0004] The purpose of this application is to address the shortcomings of the prior art by providing an auxiliary structure for opening and closing helicopter doors, thereby solving the problem that existing devices often cannot flexibly adjust the cleaning method or the position of cleaning components when faced with gaps and structures of different shapes and sizes on the guide rail.

[0005] To achieve the above objectives, this application provides the following technical solution: A helicopter door opening and closing auxiliary structure includes a door body and an auxiliary component. The door body is provided with a handle, and a door hinge for connecting to the helicopter is provided on the side opposite the handle. The auxiliary component is located below the handle. The auxiliary component is horizontally arranged and includes a mounting component, an outer rod, and a movable inner rod. The mounting component is connected to the inner wall of the door body. One end of the outer rod is movably connected to the mounting component, and the other end is sleeved on the outside of the movable inner rod. A pull ball is installed on the end of the movable inner rod away from the outer rod.

[0006] Preferably, a connecting shaft is vertically installed on the inner side of the mounting component. The connecting shaft passes through the end of the outer rod and is fixedly connected to the outer rod. The connecting shaft is rotatably connected to the mounting component, and a damper is provided at the connection point.

[0007] Preferably, the mounting component is fixedly provided with a fixing bolt, which is threadedly connected to the inner wall of the hatch body.

[0008] Preferably, the side wall of the movable inner rod is provided with spaced mounting holes, and a buckle slides into the mounting hole.

[0009] Preferably, a telescopic spring is fixedly connected to the bottom of the buckle, and the other end of the telescopic spring is fixedly connected to the inner wall of the mounting hole.

[0010] Preferably, the interior of the movable inner rod has an inner groove into which the movable inner rod slides, and a push spring is embedded in the inner groove, the other end of which is fixedly connected to the inner wall of the hatch body.

[0011] Preferably, the outer rod has snap holes on its side wall that are adapted to the buckle, and the snap holes are spaced apart to fix the movable inner rod in the retracted and extended states respectively.

[0012] The beneficial effects of this application are as follows: By installing an operable auxiliary component on the inside of the hatch, the operator only needs to pull the ball at the end of the movable inner rod inside the hatch to close the hatch, avoiding the need to lean out of the hatch, reducing operational risks, and ensuring personnel safety. The design of the auxiliary component makes closing the hatch operation simpler; simply pulling the movable inner rod quickly drives the hatch to close, improving the efficiency of hatch closing. The auxiliary component adopts a telescopic design, and the movable inner rod can be fitted inside the outer rod. When the hatch is closed, the movable inner rod retracts, occupying little space and not interfering with the activities of personnel inside the hatch or the arrangement of other equipment. It provides sufficient operating length when the hatch needs to be closed. This design not only meets operational needs but also makes reasonable use of the space inside the hatch.

[0013] By creating mounting holes and installing buckles and telescopic springs on the side wall of the movable inner rod, and by creating locking holes on the side wall of the outer rod to accommodate the buckles, accurate positioning of the movable inner rod at different positions is achieved. When the movable inner rod extends or retracts to the corresponding position, the buckles can securely engage with the locking holes, ensuring the stability of the auxiliary structure during use and ensuring reliable operation of the hatch opening and closing.

[0014] The push spring embedded in the inner groove can pop out when the movable inner rod is unfolded, further improving the ease of use. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the auxiliary component structure; Figure 3 This is a schematic diagram of the movable inner rod structure; Figure 4 This is a schematic diagram of the main structure of the hatch.

[0018] Reference numerals: 1. Door body; 2. Handle; 3. Door shaft; 4. Auxiliary component; 5. Mounting piece; 6. Fixing bolt; 7. Connecting shaft; 8. Outer rod; 9. Movable inner rod; 10. Pull ball; 11. Buckle; 12. Telescopic spring; 13. Mounting hole; 14. Inner groove; 15. Push spring. Detailed Implementation

[0019] The following is a detailed description of an auxiliary structure for opening and closing a helicopter door provided in this application, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Reference Figure 1 As shown, this utility model provides a helicopter cabin door opening and closing auxiliary structure, including a cabin door body 1 and an auxiliary component 4. The cabin door body 1 is provided with a handle 2, and a cabin door shaft 3 connected to the helicopter is provided on the side opposite to the handle 2. The auxiliary component 4 is located below the handle 2. Reference Figure 2 The auxiliary component 4 is horizontally positioned and includes a mounting piece 5, an outer rod 8, and a movable inner rod 9. The mounting piece 5 is connected to the inner wall of the hatch body 1. One end of the outer rod 8 is movably connected to the mounting piece 5, and the other end is sleeved on the outside of the movable inner rod 9. A pull ball 10 is installed on the end of the movable inner rod 9 away from the outer rod 8. A connecting shaft 7 is vertically installed on the inner side of the mounting piece 5. The connecting shaft 7 passes through the end of the outer rod 8 and is fixedly connected to the outer rod 8. The connecting shaft 7 is rotatably connected to the mounting piece 5, and a damper is provided at the connection to limit the maximum rotation angle of the outer rod 8 to no more than 90 degrees. A fixing bolt 6 is fixedly installed on the mounting piece 5 and is threadedly connected to the inner wall of the hatch body 1.

[0024] Reference Figure 3 , Figure 4 The movable inner rod 9 has spaced mounting holes 13 on its side wall, and a buckle 11 slides into each mounting hole 13. A telescopic spring 12 is fixedly connected to the bottom of the buckle 11, and the other end of the telescopic spring 12 is fixedly connected to the inner wall of the mounting hole 13. The movable inner rod 9 has an inner groove 14 for sliding into it, and a push spring 15 is embedded in the inner groove 14. The other end of the push spring 15 is fixedly connected to the inner wall of the hatch body 1. The outer rod 8 has locking holes on its side wall that fit the buckles 11, and the locking holes are spaced apart to fix the movable inner rod 9 in its retracted and extended states.

[0025] Working principle: In use, the mounting component 5 is threadedly connected to the inner wall of the hatch body 1 via the fixing bolts 6, so as to achieve the stable installation of the auxiliary component 4 on the hatch body 1. The connecting shaft 7, which is vertically installed on the inner side of the mounting component 5, is fixedly connected to the end of the outer rod 8, and the connecting shaft 7 is rotatably connected to the mounting component 5. At the same time, a damper is provided at the connection to limit the maximum rotation angle of the outer rod 8 to no more than 90 degrees.

[0026] When the hatch is closed, the inner movable rod 9 is inside the outer rod 8 and is in a retracted state. At this time, under the action of the telescopic spring 12, the latch 11 is partially locked in the corresponding locking hole on the side wall of the outer rod 8 in the retracted state. At the same time, the push spring 15 is compressed, and its other end is fixedly connected to the inner wall of the hatch body 1, applying an outward pushing force to the inner movable rod 9. However, due to the locking effect of the latch 11, the inner movable rod 9 remains in the retracted state.

[0027] When opening the hatch, this auxiliary structure is mainly for closing the hatch. When opening the hatch, the operator normally uses the handle 2 on the hatch to open the hatch outward around the hatch axis 3. During this process, the auxiliary structure basically does not participate in the operation and remains in the initial retracted state. However, it is necessary to unfold the auxiliary component 4 to facilitate the subsequent closing operation. Press the buckle 14, push the spring 15 to pop out, and push the movable inner rod 9. When the buckle 14 is flush with another locking hole, it pops out and is fixed, completing the unfolding.

[0028] When the hatch needs to be closed, the operator no longer needs to lean out of the hatch to pull the handle 2 at a distance. They simply need to grasp the pull ball 10 at the end of the movable inner rod 9 and pull it outwards. The movable inner rod 9 drives the outer rod 8 to rotate around the connecting shaft 7, thus transmitting the pulling force to the hatch body 1, causing the hatch to rotate around the hatch shaft 3, achieving rapid closure. Once the hatch is closed to the appropriate position and the handle 2 is pulled to a safe position, the hatch closing operation is complete. Afterwards, to restore the auxiliary structure to its initial state, press the latch 11 to slide it out of the locking hole, press the movable inner rod 9 to slide it into the outer rod 8, and push the spring 15 back to the retracted state. At this time, the latch 11 engages with the corresponding locking hole.

[0029] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0030] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0031] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A helicopter cabin door opening and closing auxiliary structure, comprising a cabin door body (1) and an auxiliary component (4), characterized in that: The main body (1) of the door is provided with a handle (2), and the side opposite to the handle (2) is provided with a door hinge (3) connected to the helicopter. The auxiliary component (4) is located below the handle (2). The auxiliary component (4) is horizontally arranged and includes a mounting part (5), an outer rod (8) and a movable inner rod (9). The mounting part (5) is connected to the inner wall of the hatch body (1). One end of the outer rod (8) is movably connected to the mounting part (5), and the other end is sleeved on the outside of the movable inner rod (9). A pull ball (10) is installed on the end of the movable inner rod (9) away from the outer rod (8).

2. The helicopter cabin door opening and closing auxiliary structure according to claim 1, characterized in that: A connecting shaft (7) is vertically installed on the inner side of the mounting component (5). The end of the connecting shaft (7) that passes through the outer rod (8) is fixedly connected to the outer rod (8). The connecting shaft (7) is rotatably connected to the mounting component (5), and a damper is provided at the connection point.

3. The helicopter cabin door opening and closing auxiliary structure according to claim 1, characterized in that: The mounting component (5) is fixedly provided with a fixing bolt (6), which is threadedly connected to the inner wall of the hatch body (1).

4. The helicopter cabin door opening and closing auxiliary structure according to claim 1, characterized in that: The movable inner rod (9) has spaced mounting holes (13) on its side wall, and a buckle (11) slides into the mounting hole (13).

5. The helicopter cabin door opening and closing auxiliary structure according to claim 4, characterized in that: The bottom of the buckle (11) is fixedly connected to a telescopic spring (12), and the other end of the telescopic spring (12) is fixedly connected to the inner wall of the mounting hole (13).

6. The helicopter cabin door opening and closing auxiliary structure according to claim 1, characterized in that: The interior of the movable inner rod (9) has an inner groove (14) into which the movable inner rod (9) slides. A push spring (15) is embedded in the inner groove (14), and the other end of the push spring (15) is fixedly connected to the inner wall of the hatch body (1).

7. The helicopter cabin door opening and closing auxiliary structure according to claim 5, characterized in that: The outer rod (8) has a buckle hole on its side wall that is adapted to the buckle (11). The buckle holes are spaced apart to fix the movable inner rod (9) in the retracted and extended states respectively.

Images