A small quick-release waterproof hatch

Abstract

The invention discloses a small quick-release waterproof hatch, comprising a hatch and a fixing, wherein a groove is provided on the fixing, a slider is provided in the groove, the other end of the slider is connected to the hatch, a hook lock is provided between the hatch and the fixing, and a sealing ring is provided around the hatch. In the invention, the sealing ring is a tubular hollow rubber with good elasticity. After the hatch is closed, the edge of the fixing has a certain extrusion force on the sealing ring, so that the hollow rubber is compressed and deformed, and fits tightly with the fixing. Rainwater can enter the outside of the sealing ring, but cannot pass through the sealing ring. The rainwater flows downward along the outside of the hatch sealing ring, and finally is discharged from the hatch lower frame to the outside of the equipment cabin; the design of the boss can better increase the pressure of the hatch and the fixing on the sealing ring, so that the deformation of the sealing ring is larger and the sealing performance is better. The invention has a simple structure, simple operation, light weight, quick and convenient opening and locking, large hatch pressing force, high reliability, easy maintenance, and good waterproof performance.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft mechanism design, and in particular relates to a small quick-release waterproof cabin door. Background Art

[0002] With the improvement of aircraft utilization efficiency, higher requirements are placed on the time and number of maintenance personnel required for aircraft inspection and maintenance. For equipment cabins that need to be opened frequently for maintenance, maintenance personnel are required to be able to quickly open and close the cabin door with bare hands, and the cabin door must not be separated from the aircraft after opening. Usually, there are electronic equipment or engine accessories in the equipment cabin, and rainwater must not enter the equipment cabin during flight and parking, so higher waterproof requirements are placed on quick-release cabin doors. Existing equipment cabin doors usually use hinges and C-type arms as rotating parts, with pin-tongue or top-pressure quick-release locks for compression, and struts or gas springs as supports for the open state of the cabin door. In order to meet the waterproof requirements, the stiffness of the cabin door and the support arm is usually designed to be higher, which increases the weight of the structure. The waterproofness of the hinged cabin door is difficult to meet, and additional waterproof measures are required. In addition, the hinge can only be arranged on the straight section of the fuselage shape, which has great limitations; in order to ensure the door opening, the crank arm of the crank arm needs to be enlarged, which will occupy a large space inside the aircraft. Therefore, it is urgent to improve the current cabin door to meet the use requirements. Summary of the invention

[0003] To solve the above problems, the object of the present invention is to provide a small quick-release waterproof cabin door.

[0004] A small quick-release waterproof hatch comprises a hatch and a fixing part, wherein the fixing part is provided with a groove, a slider is provided in the groove, the other end of the slider is connected to the hatch, a hook lock is provided between the hatch and the fixing part, and a sealing ring is provided around the hatch, and the sealing ring is provided between the hatch and the fixing part. It is convenient to install, the fixing part comprises an upper mouth frame, a lower mouth frame and two slide rails arranged on the body skin, the slide rails are arranged between the upper mouth frame and the lower mouth frame, the groove is arranged on the two slide rails, and in order to facilitate closing the hatch, the groove comprises an upward bending section and a downward straight section, the upward bending section and the downward straight section are connected, and the cross section of the groove is T-shaped or C-shaped, the lock hook of the hook lock is arranged at the lower end of the hatch, the lock ring of the hook lock is arranged on the lower mouth frame, the upper mouth frame is arranged on the lower mouth frame, and the upper mouth frame, the lower mouth frame and the slide rail form a U-shaped door frame.

[0005] In order to facilitate the connection and opening and closing of the cabin door, a connecting ear is provided on the cabin door, and a shaft rod is provided on the sliding block, and the shaft rod is connected to the connecting ear.

[0006] In order to facilitate the deformation of the sealing ring and ensure the sealing effect, the sealing ring is a tubular hollow rubber. In order to make the deformation of the sealing ring larger and achieve a better sealing effect, a boss for squeezing the sealing ring is provided on the upper frame, and the boss can better increase the squeezing degree of the hatch and the fixing part on the sealing ring, so that the deformation of the sealing ring is larger.

[0007] Compared with the prior art, the small quick-release waterproof hatch of the present invention has the following beneficial effects: 1. The sealing ring of the present invention is a tubular hollow rubber with good elasticity. After the hatch is closed, the edge of the fixing part exerts a certain extrusion force on the sealing ring, so that the hollow rubber is compressed and deformed, and fits tightly with the fixing part. Rainwater can enter the outside of the sealing ring, but cannot pass through the sealing ring. Rainwater flows downward along the outside of the hatch sealing ring and is finally discharged from the equipment cabin through the lower frame of the hatch; 2. The design of the boss in the present invention can better increase the pressure of the hatch and the fixing part on the sealing ring, so that the deformation of the sealing ring is greater. , the sealing performance is better, so that the cabin door has the functions of sealing and drainage, thereby ensuring that rainwater will not gather and penetrate into the cabin; 3. The slide rail in the present invention not only guides the slider to move in the groove to realize the closing and opening of the cabin door, but also acts as the door frame to strengthen the surrounding structure and squeeze the sealing ring of the cabin door to achieve a waterproof effect; 4. The cabin door of the present invention has a simple structure, simple operation, light weight, quick and convenient opening and locking, a large cabin door clamping force, high reliability, easy maintenance, good waterproof performance, does not affect the appearance and aerodynamic shape of the aircraft, and the cabin door has a large opening, which occupies less space inside the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described in detail below with reference to the accompanying drawings.

[0009] Figure 1 It is a structural schematic diagram of a small quick-release waterproof hatch of the present invention;

[0010] Figure 2 This is a diagram showing the opening state of the small quick-release waterproof hatch of the present invention;

[0011] Figure 3 It is a schematic diagram of the structure of the fixing member of the present invention;

[0012] Figure 4 It is a partial cross-sectional view of the upper part of the small quick-release waterproof hatch of the present invention;

[0013] Figure 5 It is a vertical cross-sectional view of the small quick-release waterproof cabin door of the present invention.

[0014] As shown in the figure, 1-hatch door, 2-fuselage skin, 3-slide rail, 4-groove, 5-slider, 6-upper mouth frame, 7-lower mouth frame, 8-lock hook, 9-lock ring, 10-sealing ring, 11-boss. DETAILED DESCRIPTION

[0015] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0016] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper" and "lower" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] It should be noted that the term "comprise" or any other variation is intended to cover non-exclusive inclusion, so that an article or device containing a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device.

[0019] like Figure 1 , 3 As shown in Figure 5, a small quick-release waterproof hatch comprises a hatch 1 and a fixing part, the fixing part is provided with a groove 4, a slider 5 is provided in the groove 4, the other end of the slider 5 is connected to the hatch 1, a hook lock is provided between the hatch 1 and the fixing part, and a sealing ring 10 is provided around the hatch 1, and the sealing ring 10 is provided between the hatch 1 and the fixing part. To facilitate installation, the fixing parts include an upper mouth frame 6, a lower mouth frame 7 and two slide rails 3 arranged on the fuselage skin 2, the slide rails 3 are arranged between the upper mouth frame 6 and the lower mouth frame 7, the groove 4 is arranged on the two slide rails 3, to facilitate closing the hatch, the groove 4 includes an upward bending section and a downward straight section, the upward bending section and the downward straight section are connected, the cross-section of the groove 4 is T-shaped or C-shaped, the lock hook 8 of the hook lock is arranged at the lower end of the hatch 1, the lock ring 9 of the hook lock is arranged on the lower mouth frame 7, the upper mouth frame 6 is arranged on the lower mouth frame 7, the upper mouth frame 6, the lower mouth frame 7 and the slide rails 3 form a U-shaped door frame.

[0020] In order to facilitate the connection and opening and closing of the cabin door 1, a connecting ear is provided on the cabin door 1, and a shaft is provided on the slider 5. The shaft is connected to the connecting ear to ensure that the cabin door 1 can rotate around the shaft.

[0021] In order to facilitate the deformation of the sealing ring 10 and ensure the sealing effect, the sealing ring 10 is a tubular hollow rubber. In order to make the deformation of the sealing ring 10 larger and achieve a better sealing effect, the upper frame 6 is provided with a boss 11 for squeezing the sealing ring 10. Figure 4 As shown, the boss 11 can better increase the degree of compression of the door 1 and the fixing member on the sealing ring 10, so that the deformation of the sealing ring 10 is greater.

[0022] The present invention is implemented in the following manner: when in use, the operator presses the button of the hook lock, the lock hook 8 of the hook lock is unlocked and moves downward, disengaging from the lock ring 9, the hatch 1 is unlocked, and then the outer shell of the hook lock is pulled up as a handle for opening and closing the hatch 1, and the handle is continued to be pulled to pull the hatch 1 upward. At this time, the slider 5 slides along the groove 4 in the groove 4, slides out from the bent section of the groove 4, enters the straight section of the groove 4, and slides downward along the straight section. The slider 5 is guided by the groove 4 and slides to the bottom end of the groove 4, thereby opening the hatch 1 to the maximum state, such as Figure 2 As shown; when closing the cabin door 1, the operator pulls the handle to slide the cabin door 1 upwards. When the slider 5 slides to the connection between the straight section and the bent section, the operator presses the upper part of the cabin door 1 with his hand to make the slider 5 enter the bent section, thereby closing the cabin door 1, and then hooks the lock hook 8 on the lock ring 9. The lock ring 9 is tightened by the lock hook 8 to form a balanced tension with the slider 5. This tension can ensure that the slider 5 will not fall out of the bent section of the groove 4 when the cabin door 1 is subjected to the load of the entire aircraft and the aerodynamic load, thereby realizing the closed state of the cabin door 1, and under the action of this tension, the cabin door 1 has an inward extrusion force, so that the sealing ring 10 is pressed tightly to play a role of waterproof sealing.

[0023] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A small quick-release waterproof hatch, characterized in that : It comprises a hatch and a fixing part, the fixing part is provided with a groove, a slider is provided in the groove, the other end of the slider is connected to the hatch, a hook lock is provided between the hatch and the fixing part, a sealing ring is provided around the hatch, and the sealing ring is provided between the hatch and the fixing part; The fixing member comprises an upper mouth frame, a lower mouth frame and two slide rails arranged on the fuselage skin, the slide rails are arranged between the upper mouth frame and the lower mouth frame, the grooves are arranged on the two slide rails, the lock hook of the hook lock is arranged at the lower end of the hatch, and the lock ring of the hook lock is arranged on the lower mouth frame; The groove comprises an upward bending section and a downward straight section, the upward bending section and the downward straight section are connected, and the cross section of the groove is T-shaped or C-shaped; The hatch is provided with a connecting ear, the slider is provided with a shaft, and the shaft is connected to the connecting ear; When the slider slides to the junction of the straight section and the bent section of the groove, the upper part of the hatch is pressed to make the slider enter the bent section, thereby closing the hatch, and then the lock hook is hooked on the lock ring, and the lock ring is tightened by the lock hook to form a balanced tension with the slider.

2. The small quick-release waterproof hatch as claimed in claim 1, characterized in that : The sealing ring is a tubular hollow rubber.

3. The small quick-release waterproof hatch as claimed in claim 2, characterized in that : The upper frame is provided with a boss for squeezing the sealing ring.

Images