A pull-out galley work deck structure for an aircraft

Abstract

This utility model discloses a pull-out kitchen workbench structure for aircraft, belonging to the field of aircraft interior technology, aiming to solve the problems of limited countertop space and poor stability of existing pull-out structures in civil aircraft kitchens. The structure includes a main support assembly, an ejection device, a limiting device, and a slide rail assembly. The main support assembly comprises an aluminum alloy base shell and a honeycomb panel workbench, with the workbench slidably housed within the base shell. The ejection device, located at the rear of the base shell, consists of an aluminum alloy housing, a push rod, a cover plate, and an ejection spring, enabling the workbench to pop out. The limiting device includes a nylon safety rope, an aluminum alloy limiting lock housing, a toggle switch, a sliding locking pin, and a locking pin spring, securing the workbench after it pops out / retracts. The slide rail assembly is made of aluminum alloy, ensuring smooth sliding of the workbench. It is easy to operate, with pop-out / retraction controlled by a sliding toggle switch. It offers high stability and reliability, can be concealed within the kitchen to save space, and is easy to maintain, making it suitable for civil aircraft kitchens.

Description

Technical Field

[0001] This article relates to a pull-out kitchen workbench structure for use in aircraft. Background Technology

[0002] In civil aircraft design, cabin space utilization is one of the core design indicators, and the galley, as an important functional area in the cabin, is usually subject to strict space constraints. Most existing galley workbenches are fixed structures. While structurally stable, they occupy a fixed amount of space. During peak flight periods, when simultaneous operations such as food plating and utensil placement are required, the area of ​​the fixed workbench often cannot meet the demand, leading to low food preparation efficiency. Some civil aircraft galleys have also experimented with folding workbenches, but folding structures often rely on hinges, which are prone to hinge wear and jamming after long-term use. Furthermore, their stability after unfolding is poor, making it difficult to support the weight of heavy food or utensil.

[0003] In addition, the existing few pull-out worktable structures have the following defects: First, they lack a reliable ejection mechanism, requiring manual pulling to remove the worktable, which is cumbersome, especially when flight attendants are holding kitchen utensils with both hands; Second, the limiting and fixing structure is poorly designed, either with insufficient locking force, causing the worktable to slide during aircraft turbulence and posing a safety hazard, or with complex unlocking operations, affecting meal preparation efficiency; Third, the slide rail components mostly use ordinary steel slide rails, which are heavy and do not meet the lightweight design requirements of civil aircraft, and are prone to generating noise during sliding, affecting the cabin environment; Fourth, the overall structure has poor maintenance convenience, and after some core components (such as springs and locking pins) are damaged, a large amount of the peripheral structure needs to be disassembled for replacement, increasing maintenance costs and downtime.

[0004] Based on the existing technical deficiencies of the civil aircraft kitchen workbench, there is an urgent need for a pull-out workbench structure that can take into account space saving, convenient operation, strong stability, lightweight and easy maintenance, so as to meet the actual use needs of civil aircraft kitchens and improve food preparation efficiency and operational safety. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing civil aircraft galley workbenches, such as low space utilization, cumbersome operation, poor stability, insufficient lightweighting, and inconvenient maintenance, and to provide a pull-out workbench structure for aircraft galleys.

[0006] A pull-out kitchen worktable structure for aircraft includes a main support assembly, an ejection device, a limiting device, and a slide rail assembly.

[0007] The main support assembly includes a bottom shell and a worktable, the worktable being slidably disposed within the bottom shell; the ejection device is installed at the rear of the bottom shell and abuts against the worktable, used to drive the worktable to eject along the bottom shell;

[0008] The limiting device is connected to the bottom shell and the worktable respectively, and is used to lock and fix the worktable in the pop-out or retracted state; the slide rail assembly is disposed between the bottom shell and the worktable, and is used to guide the sliding trajectory of the worktable.

[0009] Furthermore, the ejection device includes a housing, an ejection spring, an ejector rod, and a cover plate. The housing is fixedly installed on the rear inner wall of the bottom shell, and the cover plate closes to the open end of the housing. The ejector rod can slide within the housing, with its head passing through the housing and abutting against the end of the worktable, and its tail connected to the cover plate via the ejection spring. The ejector rod's ability to slide flexibly within the housing, with its head passing through the housing and firmly abutting against the end of the worktable, allows for the even transfer of the elastic potential energy of the ejection spring to the worktable, preventing tilting and jamming of the worktable during ejection due to uneven force. Initially, the ejection spring is compressed, storing sufficient elastic potential energy. When the limiting device unlocks, the spring quickly returns to its original position and drives the ejector rod forward to push the worktable, eliminating the need for manual pulling by the crew and significantly reducing operational intensity.

[0010] Furthermore, in the main support assembly, the bottom shell is made of aluminum alloy, and the worktable is made of honeycomb panel. The inner wall of the bottom shell has a mounting groove adapted to the slide rail assembly, and the two side walls of the worktable have locking holes adapted to the limiting device. The bottom shell is made of aluminum alloy, which combines low density with high compressive strength, effectively controlling its own weight while bearing the load of the worktable and the food and kitchen utensils above it, preventing deformation after long-term use. The mounting groove on the inner wall of the bottom shell, adapted to the slide rail assembly, accurately positions the slide rail brackets, ensuring symmetrical distribution of the left and right slide rail brackets, providing a stable guiding reference for the worktable's sliding, and preventing jamming due to slide rail misalignment when the worktable pops out / retracts.

[0011] Furthermore, the limiting device includes a safety rope, a limiting lock housing, a toggle switch, a locking pin spring, and a sliding locking pin. The limiting lock housing is fixedly installed on the inner side wall of the bottom shell, and the sliding locking pin is slidably disposed inside the limiting lock housing. One end of the toggle switch extends out of the outer side of the limiting lock housing, and the other end is fixedly connected to the sliding locking pin, which is used to drive the sliding locking pin to slide along the limiting lock housing. The flight attendant only needs to slide the toggle switch along the side wall of the limiting lock housing to drive the sliding locking pin to move synchronously. The operation stroke is short and the force is small, which meets the needs of the flight attendant for rapid operation.

[0012] The locking spring is positioned between the limiting lock housing and the sliding locking pin, and is used to drive the sliding locking pin to reset. One end of the safety rope is fixedly connected to the side wall of the worktable, and the other end is fixedly connected to the inner wall of the bottom shell, and is used to limit the maximum ejection stroke of the worktable. The core function of the safety rope, with one end fixedly connected to the side wall of the worktable and the other end fixedly connected to the inner wall of the bottom shell, is to limit the maximum ejection stroke of the worktable. Even if the limiting device fails due to a malfunction, the safety rope can still hold the worktable in place through its tensile strength, preventing the worktable from falling out of the bottom shell, thus adding a safety redundancy to the device.

[0013] Furthermore, the safety rope is made of nylon, while the limit lock housing, the toggle switch, and the sliding lock pin are all made of aluminum alloy, and the spring is made of steel. The end of the sliding lock pin has an arc-shaped guide surface, and the inner walls of the lock holes in the bottom shell and the worktable have chamfered structures that match the arc-shaped guide surface. The arc-shaped surface and chamfer also reduce contact wear between the lock pin and the lock hole, preventing increased locking gaps due to component wear after long-term use and extending the maintenance cycle of the limit device.

[0014] Furthermore, the slide rail assembly includes a left slide rail bracket, a right slide rail bracket, and two slide rails; the left and right slide rail brackets are respectively fixedly installed on the left and right walls inside the bottom shell; the two slide rails are respectively fixedly installed on the outer walls of the left and right sides of the worktable, and each slide rail is slidably engaged with its corresponding slide rail bracket. A ball-bearing sliding structure is used between the slide rails and brackets, which converts sliding friction into rolling friction, significantly reducing frictional resistance and allowing for control of the operating force when the worktable pops out / retracts, enabling the crew to easily push it with one hand.

[0015] Furthermore, the left slide rail bracket, the right slide rail bracket, and the slide rail are all made of aluminum alloy; the length of the slide rail is adapted to the length of the base shell, and both ends of the slide rail are provided with limiting protrusions. When the worktable slides to its maximum extension stroke or fully retracted state, the limiting protrusions will tightly abut against the ends of the slide rail brackets, preventing the slide rail from continuing to slide. This prevents the slide rail from detaching from the bracket and causing the worktable to slip, and also avoids a hard collision between the worktable and the ends of the base shell, reducing component damage. This design ensures both the lightweight and durability of the slide rail assembly, and improves the safety of the device through the physical limiting structure, reducing the risk of failure.

[0016] Furthermore, a buffer element is included, which is installed on the inner front wall of the bottom shell. The buffer element is made of silicone and is used to abut against the front end of the worktable when it retracts. Silicone has good sound insulation properties, effectively reducing collision noise during worktable retraction. When the worktable is fully retracted, the contact between the buffer element and the front end of the worktable further enhances the stability of the worktable, preventing minor swaying during aircraft turbulence.

[0017] Beneficial effects:

[0018] In this device, the workbench can be hidden inside the bottom shell to save kitchen space, and when it pops out, it can expand the food preparation area to meet the needs of peak cooking times or when multiple people are preparing food. The workbench pops out automatically using the ejection device, and locking and unlocking can be completed by using the toggle switch to operate the limit device. The operation is simple and does not require complicated steps to pop out and retract the workbench.

[0019] The structure utilizes lightweight and durable materials such as aluminum alloy and honeycomb panels, along with stable slide rail components to ensure smooth table movement. Limiting devices and safety ropes further guarantee stability and safety during use, minimizing the likelihood of malfunctions. The overall mechanical structure is simple, with a rational layout of core components, facilitating disassembly and replacement during maintenance, making it suitable for long-term use in civilian aircraft kitchens. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the retractable workbench in the aircraft galley in the embodiment.

[0021] Figure 2 This is a schematic diagram of the overall structure of the pull-out worktable in the aircraft galley in the embodiment, showing its pop-up state.

[0022] Figure 3 This is a cross-sectional view of the ejector device in the embodiment;

[0023] Figure 4 This is a schematic diagram of the limiting device in the embodiment;

[0024] In the picture:

[0025] 11. Bottom shell; 12. Worktable;

[0026] 21. Box body, 22. Ejection spring, 23. Ejection rod, 24. Cover plate

[0027] 31. Safety rope; 32. Limit lock box; 33. Toggle switch; 34. Locking pin spring; 35. Sliding locking pin.

[0028] 41. Left slide rail bracket, 42. Right slide rail bracket, 43. Slide rail. Detailed Implementation

[0029] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0030] Example 1: As Figures 1-4 As shown, a pull-out worktable installed in an aircraft galley has the following structure and functions:

[0031] The main structure includes a base shell 11 and a worktable 12, both made of aluminum alloy and honeycomb panel, respectively. These serve as the core supporting components of the pull-out worktable, providing a stable mounting foundation for the remaining structures. The ejection device consists of a housing 21, an ejection spring 22, an ejector rod 23, and a cover plate 24. The housing, ejector rod, and cover plate are all made of aluminum alloy, while the spring is made of steel. The core function of this device is to drive the worktable to eject. A buffer, made of silicone, is installed on the inner front wall of the base shell and abuts against the front end of the worktable when it retracts.

[0032] The limiting device consists of a safety rope 31, a limiting lock box 32, a toggle switch 33, a locking pin spring 34, and a sliding locking pin 35. The safety rope is made of nylon, while the limiting lock box, toggle switch, and sliding locking pin are all made of aluminum alloy, and the spring is made of steel. Its function is to lock and fix the worktable after it pops out, ensuring that the worktable is in a stable working state. The slide rail assembly includes a left slide rail bracket 41, a right slide rail bracket 42, and a slide rail 43. The whole assembly is made of aluminum alloy, which can provide stable support for the pop-out and retraction process of the worktable and ensure smooth sliding.

[0033] The operation method of the pull-out worktable of this invention is as follows: In the initial state (e.g.) Figure 1 As shown), the worktable is in the retracted state; when it needs to be popped out (e.g. Figure 2 As shown), slide the lever 33 by hand to unlock, and the ejector device will then drive the worktable to pop out. At this time, the limit device will automatically lock to fix the worktable. When retracting the worktable, the worktable needs to be pushed inward to overcome the resistance of the spring in the ejector device. After the worktable is fully retracted, the limit device will lock again to complete the retraction action.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pull-out kitchen workbench structure for aircraft, characterized in that, Includes main support components, ejection device, limiting device, and slide rail components; The main support assembly includes a bottom shell and a worktable, the worktable being slidably disposed within the bottom shell; the ejection device is installed at the rear of the bottom shell and abuts against the worktable, used to drive the worktable to eject along the bottom shell; The limiting device is connected to the bottom shell and the worktable respectively, and is used to lock and fix the worktable in the pop-out or retracted state; the slide rail assembly is disposed between the bottom shell and the worktable, and is used to guide the sliding trajectory of the worktable.

2. The pull-out kitchen workbench structure for aircraft according to claim 1, characterized in that, The ejection device includes a housing, an ejection spring, an ejection rod, and a cover plate; The box body is fixedly installed on the rear inner wall of the bottom shell, and the cover plate covers the opening end of the box body; the push rod can slide inside the box body, the head of the push rod passes through the box body and abuts against the end of the worktable, and the tail of the push rod is connected to the cover plate through a push-out spring.

3. The pull-out kitchen workbench structure for aircraft according to claim 1, characterized in that, In the main support assembly, the bottom shell is made of aluminum alloy, and the worktable is made of honeycomb panel; the inner side wall of the bottom shell is provided with an installation groove adapted to the slide rail assembly, and the two side walls of the worktable are provided with lock holes adapted to the limiting device.

4. The pull-out kitchen workbench structure for aircraft according to claim 3, characterized in that, The limiting device includes a safety rope, a limit lock housing, a toggle switch, a locking pin spring, and a sliding locking pin; The limiting lock box is fixedly installed on the inner side wall of the bottom shell, and the sliding lock pin is slidably disposed inside the limiting lock box. One end of the knob extends out of the outer side of the limiting lock box, and the other end is fixedly connected to the sliding lock pin, which is used to drive the sliding lock pin to slide along the limiting lock box. The locking spring is disposed between the limiting lock box and the sliding locking pin, and is used to drive the sliding locking pin to reset; one end of the safety rope is fixedly connected to the side wall of the workbench, and the other end is fixedly connected to the inner wall of the bottom shell, and is used to limit the maximum ejection stroke of the workbench.

5. The pull-out kitchen workbench structure for aircraft according to claim 4, characterized in that, The safety rope is made of nylon, the limit lock box, the toggle switch and the sliding lock pin are all made of aluminum alloy, and the spring is made of steel. The end of the sliding lock pin is provided with an arc-shaped guide surface, and the inner wall of the lock hole of the bottom shell and the worktable is provided with a chamfer structure that matches the arc-shaped guide surface.

6. The pull-out kitchen workbench structure for aircraft according to claim 3, characterized in that, The slide rail assembly includes a left slide rail bracket, a right slide rail bracket, and two slide rails; the left slide rail bracket and the right slide rail bracket are respectively fixedly installed on the left and right walls inside the bottom shell; the two slide rails are respectively fixedly installed on the outer walls of the left and right sides of the worktable, and each slide rail is slidably engaged with the corresponding slide rail bracket.

7. A pull-out kitchen workbench structure for an aircraft according to claim 6, characterized in that, The left slide rail bracket, the right slide rail bracket, and the slide rail are all made of aluminum alloy; the length of the slide rail is adapted to the length of the bottom shell, and the two ends of the slide rail are provided with limiting protrusions.

8. The pull-out kitchen workbench structure for aircraft according to claim 1, characterized in that, Includes a buffer component, which is installed on the inner wall of the front end of the bottom shell. The buffer component is made of silicone and is used to abut against the front end of the worktable when the worktable is retracted.

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