Cabin door drainage mechanism
By designing the doors with drainage parts, door frames and spring mechanisms on the aircraft cabin doors, the problem of easy wear of traditional rubber hoses is solved, and the drainage effect is not easy to damage and does not require human maintenance is achieved, ensuring the smooth flow of the drainage passage.
Patent Information
- Application Number
- CN202420134249.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-18
AI Technical Summary
The traditional aircraft cabin door drainage device uses rubber hoses, which are easy to wear, difficult to maintain, and are not durable, resulting in poor drainage passages.
A hatch drainage mechanism is designed, including a door collection and drainage part, a door frame, a door frame drainage groove, an upper and lower spring and a hinge. The water collection and discharge of water is achieved through a U-shaped groove and a drain nozzle. The door frame drainage groove has Inclination angle and connection holes, use tension springs and hinges to maintain dynamic balance of the drainage tank to ensure smooth water flow.
The blocked drainage of the top hatch door of the fuselage is realized, which avoids wear and aging of rubber hoses, reduces maintenance needs, and ensures the smooth flow of drainage passages throughout the life cycle.
Smart Images
Figure CN222202882U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of aircraft cabin door drainage design, and in particular relates to a cabin door drainage mechanism. Background Art
[0002] The door drainage device of an aircraft door is used to drain the door, and is mainly used for draining the door on the top of the fuselage. For the drainage device of the aircraft, the current design background is as follows:
[0003] 1. The traditional hatch drainage device is very simple, using a rubber hose directly overlapped and in contact with the drain trough, which can easily cause long-term wear of the rubber hose.
[0004] 2. The traditional hatch drainage device uses a rubber hose. As time goes by, the hose needs to be manually connected to the drain trough, causing maintenance difficulties.
[0005] 3. The traditional hatch drainage device adopts a rubber hose. As time goes by, the rubber hose ages seriously and becomes undurable.
[0006] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Utility Model Content
[0007] The purpose of the present application is to provide a hatch drainage mechanism to solve at least one problem existing in the prior art.
[0008] The technical solution of this application is:
[0009] A hatch drainage mechanism, comprising:
[0010] A drainage member on the door, the drainage member on the door being arranged on the hatch door, the drainage member on the door being provided with a U-shaped groove and a drainage nozzle connected with the U-shaped groove;
[0011] A door frame, wherein an opening is formed on the door frame, an upper tension spring support of the door frame is installed above the opening of the door frame, and a lower tension spring support of the door frame is installed below the opening of the door frame;
[0012] A drainage groove on the door frame, wherein the drainage groove on the door frame is installed at the opening of the door frame through a door frame hinge, one end of the drainage groove on the door frame is connected to the drainage nozzle, and the other end extends out of the opening of the door frame, and an upper connecting hole and a lower connecting hole are opened on the drainage groove on the door frame;
[0013] A tension spring on the upper portion of the door frame, wherein one end of the tension spring on the upper portion of the door frame is connected to the tension spring support on the upper portion of the door frame, and the other end is connected to the upper connection hole of the drainage groove on the door frame;
[0014] A tension spring at the lower portion of the door frame, wherein one end of the tension spring at the lower portion of the door frame is connected to the tension spring support at the lower portion of the door frame, and the other end is connected to the lower connection hole of the drainage groove on the door frame.
[0015] In at least one embodiment of the present application, the drain nozzle is a tubular structure with one end being beveled.
[0016] In at least one embodiment of the present application,
[0017] The tension spring support at the upper part of the door frame is a double-ear joint, which is connected to the door frame by rivets;
[0018] The tension spring support at the lower part of the door frame is a double-ear joint, which is connected to the door frame through rivets.
[0019] In at least one embodiment of the present application, the drainage groove on the door frame has an inclination angle of 15° to 30°.
[0020] In at least one embodiment of the present application, the door frame hinge is a hinge-type hinge, one end of which is connected to the drainage groove on the door frame through a rivet, and the other end is connected to the door frame through a rivet.
[0021] In at least one embodiment of the present application, the upper connecting holes and the lower connecting holes of the drainage groove on the door frame are arranged in 5 groups at equal intervals.
[0022] In at least one embodiment of the present application,
[0023] The tension spring on the upper part of the door frame is connected to the tension spring support on the upper part of the door frame through bolts, and is hung with the upper connection hole of the drainage groove on the door frame through a hook;
[0024] The tension spring at the lower part of the door frame is connected to the tension spring support at the lower part of the door frame through bolts, and is hung with the lower connection hole of the drainage groove on the door frame through a hook.
[0025] In at least one embodiment of the present application, the tension spring at the upper portion of the door frame has the same stiffness as the tension spring at the lower portion of the door frame.
[0026] The utility model has at least the following beneficial technical effects:
[0027] The hatch drainage mechanism of the present application can realize the drainage of the blocked hatch on the top of the fuselage. It is not easy to wear, does not require manual control and has no aging problems. It has the same service life as the fuselage, ensuring the smooth flow of the hatch drainage passage throughout the entire life cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of a hatch drainage mechanism according to an embodiment of the present application.
[0029] in:
[0030] 1- Drainage collection and drainage parts on the door; 2- Drainage groove on the door frame; 3- Tension spring on the upper part of the door frame; 4- Tension spring on the lower part of the door frame; 5- Tension spring support on the upper part of the door frame; 6- Tension spring support on the lower part of the door frame; 7- Door frame hinge; 8- Door frame. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.
[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.
[0033] The following is combined with Figure 1 This application is described in further detail.
[0034] The present application provides a hatch door drainage mechanism, comprising: a door drainage member 1, a door frame 8, a drainage groove 2 on the door frame, an upper tension spring 3 on the door frame, and a lower tension spring 4 on the door frame.
[0035] Specifically, Figure 1 As shown, the door drainage member 1 is arranged on the hatch door, and has a U-shaped groove and a drainage nozzle connected to the U-shaped groove. In a preferred embodiment of the present application, the door drainage member 1 uses a U-shaped part with a groove as a water collection part and a cylindrical drainage nozzle welded thereon as a drainage part, and the drainage nozzle is a tubular structure with one end beveled.
[0036] The door frame 8 is provided with a rectangular opening, which is connected to the aircraft body by fasteners, and an upper door frame tension spring support 5 is installed above the opening of the door frame 8, and a lower door frame tension spring support 6 is installed below the opening of the door frame 8. In a preferred embodiment of the present application, the upper door frame tension spring support 5 is a double-ear joint, which is connected to the door frame 8 by rivets, and similarly, the lower door frame tension spring support 6 is a double-ear joint, which is connected to the door frame 8 by rivets.
[0037] The upper drainage groove 2 of the door frame is installed at the opening of the door frame 8 through the door frame hinge 7. One end of the upper drainage groove 2 of the door frame is connected to the drainage nozzle, and the other end extends from the opening of the door frame 8. The upper drainage groove 2 of the door frame is provided with an upper connection hole and a lower connection hole. In a preferred embodiment of the present application, the upper drainage groove 2 of the door frame has an inclination angle of 15° to 30°. The door frame hinge 7 is a hinge-type hinge, one end of which is connected to the upper drainage groove 2 of the door frame by a rivet, and the other end is connected to the door frame 8 by a rivet. The upper drainage groove 2 of the door frame is provided with multiple groups of upper and lower connection holes for connecting springs. In this embodiment, the upper connection holes and the lower connection holes of the upper drainage groove 2 of the door frame are preferably arranged in 5 groups at equal intervals.
[0038] One end of the door frame upper tension spring 3 is connected to the door frame upper tension spring support 5, and the other end is connected to the upper connection hole of the door frame upper drainage groove 2; one end of the door frame lower tension spring 4 is connected to the door frame lower tension spring support 6, and the other end is connected to the lower connection hole of the door frame upper drainage groove 2. In the preferred embodiment of the present application, the door frame upper tension spring 3 is connected to the door frame upper tension spring support 5 by bolts, and is hung with the upper connection hole of the door frame upper drainage groove 2 by a hook; the door frame lower tension spring 4 is connected to the door frame lower tension spring support 6 by bolts, and is hung with the lower connection hole of the door frame upper drainage groove 2 by a hook. In this embodiment, the door frame upper tension spring 3 and the door frame lower tension spring 4 have the same stiffness.
[0039] The hatch drainage mechanism of the present application has the following drainage principle:
[0040] When the door is closed, its main status is as follows: Figure 1 As shown, at this time, the drainage fitting 1 on the door is connected to the door body, and the water flows through the U-shaped groove on the drainage fitting 1 on the door to collect water, and flows out through the drainage nozzle on the drainage fitting 1 on the door, and falls into the drainage groove 2 on the door frame. The drainage groove 2 on the door frame is maintained in the neutral position under the action of the tension spring 3 on the upper part of the door frame and the tension spring 4 on the lower part of the door frame. When water falls on the drainage groove 2 on the door frame, the tension spring 3 on the upper part of the door frame tends to change to a larger deformation, and the tension spring 4 on the lower part of the door frame tends to change to a smaller deformation. Therefore, when the water flows down, the tension spring 3 on the upper part of the door frame and the tension spring 4 on the lower part of the door frame will achieve dynamic balance, so that the drainage groove 2 on the door frame remains in the vicinity of this position, which is conducive to the smooth flow of water.
[0041] The drainage groove 2 on the door frame is in an oblique upward state when in a closed state.
[0042] When the hatch is opened, the drainage piece 1 on the door contacts the end of the drainage groove 2 on the door frame, and then under the action of the force, the drainage groove 2 on the door frame moves downward, and the drainage piece 1 on the door gradually passes over the drainage groove 2 on the door frame. After passing over, the drainage groove 2 on the door frame quickly returns to its initial position under the action of the upper and lower tension springs.
[0043] The hatch drainage mechanism of the present application, since the force of the tension springs at the upper and lower parts of the drainage groove 2 on the door frame plays a role in maintaining the initial position of the drainage groove 2 on the door frame, the force of the tension spring 3 at the upper part of the door frame and the tension spring 4 at the lower part of the door frame need to be matched, and generally the tension spring 3 at the upper part of the door frame and the tension spring 4 at the lower part of the door frame can be set to be the same size tension spring, and the tension springs are matched through the upper and lower position hanging points on the drainage groove 2 on the door frame, for example, the tension spring 3 at the upper part of the door frame is installed at the third connection hole above the drainage groove 2 on the door frame, and the tension spring 4 at the lower part of the door frame is installed at the second connection hole below the drainage groove 2 on the door frame, and the balance effect is achieved by controlling the action torque of the two springs. In addition, the stiffness of the spring can also be set to control the balance.
[0044] In the hatch drainage mechanism of the present application, the upper and lower connection holes of the drainage groove 2 on the door frame not only balance the force through torque, but also the spring may cause permanent deformation under long-term pre-tension, resulting in a reduction in the spring force. At this time, the torque of the spring with reduced spring force can be increased by changing the connection point, thereby achieving a balance in the forces of the upper and lower tension springs, so that the drainage groove 2 on the door frame is maintained in the initial position.
[0045] The hatch drainage mechanism of the present application is suitable for drainage of the blocking hatch on the top of the fuselage. It is not easy to wear, does not require manual control and has no aging problems. It has the same service life as the fuselage, ensuring the smooth flow of the hatch drainage passage throughout the entire life cycle.
[0046] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A hatch drainage mechanism, characterized in that: include: A door-mounted drainage member (1), the door-mounted drainage member (1) being arranged on the cabin door, the door-mounted drainage member (1) having a U-shaped groove and a drainage nozzle connected to the U-shaped groove; A door frame (8), wherein an opening is formed on the door frame (8), an upper door frame tension spring support (5) is installed above the opening of the door frame (8), and a lower door frame tension spring support (6) is installed below the opening of the door frame (8); A drainage groove (2) on the door frame, the drainage groove (2) on the door frame being installed at the opening of the door frame (8) through a door frame hinge (7), one end of the drainage groove (2) on the door frame being butted against the drainage nozzle, and the other end extending out of the opening of the door frame (8), and an upper connecting hole and a lower connecting hole being provided on the drainage groove (2) on the door frame; A tension spring (3) on the upper part of the door frame, one end of the tension spring (3) on the upper part of the door frame being connected to the tension spring support (5) on the upper part of the door frame, and the other end of the tension spring (3) being connected to the upper connection hole of the drainage groove (2) on the door frame; A door frame lower tension spring (4), one end of which is connected to the door frame lower tension spring support (6), and the other end of which is connected to the lower connection hole of the door frame upper drainage groove (2).
2. The hatch door drainage mechanism according to claim 1, characterized in that: The drain nozzle is a tubular structure with one end being beveled.
3. The hatch door drainage mechanism according to claim 1, characterized in that: The tension spring support (5) on the upper part of the door frame is a double-ear joint, connected to the door frame (8) by rivets; The tension spring support (6) at the lower part of the door frame is a double-ear joint, which is connected to the door frame (8) through rivets.
4. The hatch door drainage mechanism according to claim 1, characterized in that: The drainage groove (2) on the door frame has an inclination angle of 15° to 30°.
5. The hatch door drainage mechanism according to claim 4, characterized in that: The door frame hinge (7) is a hinge type hinge, one end of which is connected to the drainage groove (2) on the door frame through a rivet, and the other end of which is connected to the door frame (8) through a rivet.
6. The hatch door drainage mechanism according to claim 5, characterized in that: The upper connection holes and the lower connection holes of the drainage groove (2) on the door frame are arranged in 5 groups at equal intervals.
7. The hatch door drainage mechanism according to claim 1, characterized in that: The door frame upper tension spring (3) is connected to the door frame upper tension spring support (5) via bolts, and is hung with the upper connection hole of the door frame upper drainage groove (2) via a hook; The door frame lower tension spring (4) is connected to the door frame lower tension spring support (6) via bolts, and is hung with the lower connection hole of the door frame upper drainage groove (2) via a hook.
8. The hatch door drainage mechanism according to claim 7, characterized in that: The door frame upper tension spring (3) and the door frame lower tension spring (4) have the same stiffness.