Floor deformation isolation device and aircraft seat

Abstract

This invention discloses a floor deformation isolation device and an aircraft seat. The device includes a cross brace and an isolation mechanism. The cross brace is located at the lower part of the aircraft seat and its two ends are connected to the seat components. The isolation mechanism is distributed at both ends of the cross brace and includes a slider that slides on a slide rail, and a pitch stabilizing block and a roll stabilizing block that are loosely fitted on the cross brace. The pitch stabilizing block is fixedly connected to the seat component at its end by a shearing member, which can disconnect when subjected to a certain shearing force. The lower part of the pitch stabilizing block is hinged to the slider by a pivot, and the lower part of the roll stabilizing block is tensioned to the slide rail by a tension member, which can disconnect when subjected to a certain tensile force. This device can ensure that the aircraft seat is stable and does not wobble under normal conditions and can be adjusted forward and backward. When the aircraft floor deforms, it can prevent the deformation force from being transmitted upward to the upper structure of the aircraft seat, ensuring that it still has crash protection function.

Description

Technical Field

[0001] This invention relates to aircraft seat crash protection, specifically to a floor deformation isolation device and an aircraft seat. Background Technology

[0002] With increasing safety requirements, aircraft seats must have crash protection during emergency landings. However, the aircraft floor may deform during an emergency landing. For aircraft seats that can slide and adjust forward and backward in conjunction with rails, floor deformation may damage the rails and consequently the upper structure of the aircraft seat. This not only affects the crash protection function but also injures the occupants.

[0003] Although some helicopter seats use a fixed locking mechanism to isolate floor deformation from the upper structure of the aircraft seat, they do not have the function of forward and backward sliding adjustment and cannot be used with aircraft seats that can slide forward and backward with the help of rails. Summary of the Invention

[0004] The purpose of this invention is to provide a floor deformation isolation device and an aircraft seat using the above device. The device can ensure that the aircraft seat is stable and does not shake under normal conditions and can be adjusted back and forth. When the aircraft floor deforms, it can prevent the deformation force from being transmitted upward to the upper structure of the aircraft seat, thus ensuring that it still has the function of crash protection.

[0005] The technical solution adopted in this invention is: A floor deformation isolation device is applicable to an aircraft seat that can slide and adjust forward and backward in conjunction with a slide rail. It includes a cross brace and an isolation mechanism. The cross brace is located at the lower part of the aircraft seat and its two ends are connected to seat components respectively. The cross brace is perpendicular to the slide rail. The isolation mechanism is distributed at both ends of the cross brace and includes a slider that slides non-detachably on the slide rail, and a pitch stabilizing block and a roll stabilizing block that are loosely fitted on the cross brace. The pitch stabilizing block is fixedly connected to the seat component at its end via a shearing member, which is parallel to the cross brace and can be disconnected when subjected to a certain shear force. The lower part of the pitch stabilizing block is hinged to the slider via a pivot parallel to the slide rail. The lower part of the roll stabilizing block is tensioned to the slide rail via a tension member, which is perpendicular to both the cross brace and the slide rail and can be disconnected when subjected to a certain tensile force.

[0006] Preferably, the pitch stabilizing block is narrower at the top and wider at the bottom. The lower end of the pitch stabilizing block is provided with a row of lugs, and the upper end of the slider is provided with a row of lugs. The lugs of the two are tightly interlocked and inserted together, and at the same time cooperate with the rotating shaft.

[0007] Preferably, the rolling stabilizer block has a mounting groove at the bottom and a tension part on the side of the slider. The tension member passes through the mounting groove and the tension part, with its upper end pressing down on the mounting groove and its lower end pulling up on the tension part.

[0008] Preferably, the cross brace has several grooves cut around its axis in the middle.

[0009] Preferably, the cross brace is provided with a limiting member, which is used to limit the inward side of the rolling stabilizer block.

[0010] Preferably, the shearing component adopts a screw structure.

[0011] Preferably, the tension member adopts a screw and nut structure.

[0012] An aircraft seat includes at least two sets of the aforementioned floor deformation isolation devices, one in front and one behind.

[0013] The beneficial effects of this invention are: Under normal conditions, the pitch stabilizing blocks and shear components at both ends ensure that the aircraft seat does not sway left and right or back and forth, while the roll stabilizing blocks and tension components at both ends ensure that the aircraft seat does not sway up and down. The slider allows for the forward and backward sliding adjustment of the seat. When an emergency landing causes deformation of the aircraft floor, which in turn damages the slide rail, the slide rail will roll or pitch. At this time, the shear components and tension components, as weak points of the device, will be sheared or stretched and broken. In this case, the slider can rotate around the axis of rotation and will not transmit the rolling force upward to the upper structure of the aircraft seat. The pitch stabilizing blocks can rotate around the cross brace and will not transmit the pitch force upward to the upper structure of the aircraft seat. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the installation of the floor deformation isolation device in an embodiment of the present invention. Figure 1 .

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the installation of the floor deformation isolation device in an embodiment of the present invention. Figure 2 .

[0018] In the diagram: 1-slide rail; 2-seat component; 3-isolation mechanism; 31-slider; 311-ear; 312-tension part; 32-pitch stabilizing block; 321-ear; 33-roll stabilizing block; 331-mounting groove; 34-shearing component; 35-rotating shaft; 36-tension component; 4-cross brace; 41-groove; 42-limiting component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0023] Example 1 This embodiment discloses a floor deformation isolation device, suitable for aircraft seats that can slide and adjust forward and backward in conjunction with slide rail 1, such as... Figures 1 to 3 The aforementioned components include a cross brace 4 and an isolation mechanism 3; wherein: the cross brace 4 is located at the lower part of the aircraft seat and its two ends are respectively connected to the seat component 2, and the cross brace 4 is perpendicular to the slide rail 1, see Figures 1 to 3 The isolation mechanism 3 is distributed at both ends of the cross brace 4, including a slider 31, a pitch stabilizing block 32, a roll stabilizing block 33, a shearing element 34, a rotating shaft 35, and a tensioning element 36, as shown in the figure. Figure 1 and Figure 3 .

[0024] Regarding quarantine facility 3, the following is true: Slider 31 slides on slide rail 1 without disengaging, see Figures 1 to 3 ; Pitch stabilizer 32 is fitted onto cross brace 4, see Figures 1 to 3 ; The rolling stabilizer 33 is fitted onto the cross brace 4. (See...) Figures 1 to 3 ; Shear member 34 is used to fix the pitch stabilizer 32 to the seat component 2 at the end. Shear member 34 is parallel to the cross brace 4 and can disconnect the connection when subjected to a certain shear force. See Figure 2 ; The pivot 35 is used to hinge the lower part of the pitch stabilizer 32 and the slider 31. The pivot 35 is parallel to the slide rail 1. (See figure) Figure 2 ; The tension member 36 is used to tighten the lower part of the rolling stabilizer block 33 to the slide rail 1. The tension member 36 is perpendicular to both the cross brace 4 and the slide rail 1 and can be disconnected when subjected to a certain tensile force. See Figure 2 .

[0025] In the above schemes: Under normal conditions, the pitch stabilizing blocks 32 and shearing components 34 at both ends ensure that the aircraft seat does not sway left and right or back and forth, the roll stabilizing blocks 33 and tension components 36 at both ends ensure that the aircraft seat does not sway up and down, and the slider 31 can realize the forward and backward sliding adjustment of the seat. When an emergency landing causes deformation of the aircraft floor and damages the slide rail 1, the slide rail 1 will roll or pitch. At this time, the shearing component 34 and the tension component 36, as weak points of the device, will be sheared or stretched and broken. At this time, the slider 31 can rotate around the pivot 35 and will not transmit the rolling force upward to the upper structure of the aircraft seat. The pitch stabilizing block 32 can rotate around the cross brace 4 and will not transmit the pitch force upward to the upper structure of the aircraft seat. Therefore, the device can ensure that the aircraft seat is stable and undisturbed under normal conditions and can be adjusted forward and backward. When the aircraft floor deforms, it can prevent the deformation force from being transmitted upward to the upper structure of the aircraft seat, thus ensuring that it still has the function of crash protection.

[0026] To ensure a more stable and reliable connection and transmission, in this embodiment, preferably: Figure 2 As shown, the pitch stabilizing block 32 is narrower at the top and wider at the bottom. The lower end of the pitch stabilizing block 32 is provided with a row of lugs 321, and the upper end of the slider 31 is provided with a row of lugs 311. The lugs (321, 311) of the two are tightly interlocked and inserted together, and at the same time cooperate with the rotating shaft 35.

[0027] To facilitate the arrangement and installation of the tension components, in this embodiment, preferably: Figure 2 As shown, the rolling stabilizer block 33 has a mounting groove 331 at the bottom and a tension part 312 on the side of the slider 31. The tension member 36 passes through the mounting groove 331 and the tension part 312, with its upper end pressing down on the mounting groove 331 and its lower end pulling up on the tension part 312.

[0028] Regarding the cross brace, in this embodiment, preferably: as follows: Figure 2 As shown, the cross brace 4 has several slots 41 cut around its axis in the middle, which can play a certain role in absorbing energy during emergency landing; for example Figure 2 As shown, the cross brace 4 is equipped with a limiting member 42, which is used to limit the inward side of the roll stabilizing block 33, which can further improve the stability of the aircraft seat under normal conditions.

[0029] For ease of installation, in this embodiment, preferably: as follows: Figure 2 As shown, the shearing component 34 adopts a screw structure, and the tension component 36 adopts a screw and nut structure.

[0030] Example 2 This embodiment discloses an aircraft seat, such as Figure 1 and Figure 3 As shown, it includes at least two sets of the aforementioned floor deformation isolation devices, one in front and one behind.

[0031] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A floor deformation isolation device, characterized in that: This invention relates to an aircraft seat that can slide and adjust forward and backward in conjunction with a slide rail, comprising a cross brace and an isolation mechanism. The cross brace is located at the bottom of the aircraft seat and is connected to the seat components at both ends, with the cross brace perpendicular to the slide rail. The isolation mechanism is distributed at both ends of the cross brace and includes a slider that slides non-detachably on the slide rail, and a pitch stabilizing block and a roll stabilizing block that are loosely fitted on the cross brace. The pitch stabilizing block is fixedly connected to the seat component at its end via a shearing member, which is parallel to the cross brace and can be disconnected when subjected to a certain shearing force. The lower part of the pitch stabilizing block is hinged to the slider via a pivot parallel to the slide rail. The lower part of the roll stabilizing block is tensioned to the slide rail via a tension member, which is perpendicular to both the cross brace and the slide rail and can be disconnected when subjected to a certain tensile force.

2. The floor deformation isolation device as described in claim 1, characterized in that: The pitch stabilizer is narrower at the top and wider at the bottom. The lower end of the pitch stabilizer has a row of lugs, and the upper end of the slider has a row of lugs. The lugs of the two are tightly interlocked and simultaneously cooperate with the rotating shaft.

3. The floor deformation isolation device as described in claim 1, characterized in that: The rolling stabilizer has a mounting groove at the bottom and a tension part on the side of the slider. The tension member passes through the mounting groove and the tension part, with its upper end pressing down on the mounting groove and its lower end pulling up on the tension part.

4. The floor deformation isolation device as described in claim 1, characterized in that: Several grooves are cut around the axis in the middle of the cross brace.

5. The floor deformation isolation device as described in claim 1, characterized in that: The cross brace is equipped with a limiting component, which is used to limit the inward-facing side of the rolling stabilizer block.

6. The floor deformation isolation device as described in claim 1, characterized in that: The shearing component uses a screw structure.

7. The floor deformation isolation device as described in claim 1, characterized in that: The tension component uses a screw and nut structure.

8. An aircraft seat, characterized in that: It includes at least two sets of floor deformation isolation devices as described in any one of claims 1 to 7.

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