Dining car table extension assembly and extended table dining car having the same

Abstract

The present disclosure relates to a dining car table extension assembly and an extension table dining car having the same, the dining car table extension assembly comprising: an extension fixing strip (210) for being fixed to a top of a dining car body (100) along a longitudinal direction of the dining car body (100); and an extension panel (220) having a hinged edge and a free edge opposite to the hinged edge, the extension panel (220) being pivotably connected to the extension fixing strip through the hinged edge along a pivot axis, the extension panel (220) having two main surfaces, namely an extension panel first surface (221) and an extension panel second surface (222) respectively; wherein the extension panel (220) is configured to be selectively in a maintainable folded position, a vertical hovering position and a horizontal unfolded position relative to the dining car body (100). The present disclosure can provide an operator with a larger and more flexible temporary operating space.

Description

Technical Field

[0001] This disclosure relates to a dining car for providing catering services on airplanes or trains, and more specifically to a dining car countertop extension assembly and a dining car with the extended countertop thereon. Background Technology

[0002] In the modern aviation industry, providing efficient and comfortable in-flight catering services is a key factor in enhancing the passenger experience. With the increase in long-haul flights and rising passenger demands for service quality, the optimized design of aircraft galley equipment has become particularly important. During long-haul or short-to-medium-haul flights, in-flight catering services on commercial airliners typically rely on dedicated catering carts. As a crucial tool in aviation catering services, the functionality and convenience of these carts directly impact flight attendant efficiency and passenger satisfaction. However, existing catering cart designs in commercial airliners have significant shortcomings in terms of operational space and flexibility.

[0003] The catering carts used in commercial airliners are mostly rigid rectangular vertical structures. Their main function is to store meals, beverages, and tableware, and they can move in the aisle for flight attendants to distribute. The catering cart mainly consists of the following parts: Metal frame: The main structure of the catering cart, usually made of aerospace-grade aluminum alloy or stainless steel to ensure lightweight and high strength; Top panel: Used for temporary placement of meal boxes, beverages, and tableware, but its area is limited by cabin space; Side panels and rear panels: Provide enclosed storage space without increasing the operating area; Storage drawers and compartments: Built into the catering cart for storing various meals and tableware; Casters: The bottom of the catering cart is equipped with rotatable or directional wheels to facilitate movement of the cart in the aircraft aisle.

[0004] However, due to limited cabin space, the area available for temporary work surfaces on the roof of the catering cart is very limited. During meal preparation or distribution, flight attendants often need to place multiple meal boxes, beverage bottles, kettles, or cutlery simultaneously, resulting in insufficient operating space and significantly impacting service efficiency and comfort. Especially when meals are served in economy class, the roof of the catering cart often cannot accommodate all items to be served at the same time, forcing flight attendants to frequently travel back and forth to the galley or stack items, increasing their workload.

[0005] Therefore, how to provide flight attendants with a larger and more flexible temporary operating space without significantly increasing the size and weight of the catering cart has become an important direction for improving the design of aircraft catering carts. Utility Model Content

[0006] This disclosure aims to address the aforementioned shortcomings of the prior art by providing a food cart countertop extension component and a food cart with the extended countertop thereon, which can provide operators with a larger and more flexible temporary operating space.

[0007] To achieve the above objectives, according to one aspect of this disclosure, a serving cart countertop extension assembly is provided, characterized in that it comprises: an extension fixing strip for fixing to the top of the serving cart body along its longitudinal direction; and an extension panel having a hinged edge and a free edge opposite to the hinged edge, the extension panel being pivotally connected to the extension fixing strip along a pivot axis via the hinged edge, the extension panel having two main surfaces, namely an extension panel first surface and an extension panel second surface; wherein the extension panel is configured to be selectively in a retainable folded position relative to the serving cart body, vertically... The vehicle has two positions: a hovering position and a horizontally unfolded position. In the folded position, the extended panel is folded above the top surface of the main body of the food cart, with the second surface of the extended panel facing upward to form a work surface. In the vertically hovered position, the extended panel extends upward perpendicularly to the top surface of the main body of the food cart, with the top surface of the main body of the food cart forming a work surface, and the extended panel forming a side panel. In the horizontally unfolded position, the extended panel unfolds to a horizontal position relative to the top of the main body of the food cart, with the first surface of the extended panel facing upward, forming a work surface along with the top surface of the main body of the food cart.

[0008] This disclosure introduces an extension panel that is pivotally connected to the top of the food cart body via an extension fixing strip and is configured to selectively occupy three positions. This allows the extension panel assembly and the food cart to have three different states, thereby providing operators with a larger and more flexible temporary operating space without significantly increasing the size and weight of the food cart. Furthermore, the combination of the extension fixing strip and the extension panel allows the food cart countertop extension assembly to form a modular structure, facilitating the modification of existing food carts to achieve extended countertop functionality.

[0009] Furthermore, the dining cart countertop extension assembly also includes a damping hinge disposed between the extension fixing bar and the extension panel along the pivot axis, such that the extension panel is pivotally connected to the extension fixing bar and can be held at any position within the pivot range.

[0010] The damping effect of the damping hinge not only keeps the extension panel in a vertically suspended position to achieve a stopping function, but also makes the flipping process of the extension panel smooth and quiet, avoiding impact and noise.

[0011] Furthermore, the dining cart countertop extension assembly is characterized by comprising: two extension fixing strips, respectively used to be disposed on both sides of the top of the dining cart body; and two extension panels, respectively connected to one of the two extension fixing strips.

[0012] By installing extension fixing strips and extension panels on both sides of the top of the main body of the food cart, a larger operating surface and a larger temporary operating space can be provided when it is horizontally unfolded. Furthermore, when it is vertically suspended, the side baffles of the vertically suspended extension panels on both sides can provide a safer top operating space and a larger vertical volume.

[0013] Furthermore, the two extended panels are arranged in the same horizontal plane, such that the work surface formed by the two extended panels is flush when in the folded position and the horizontally unfolded position.

[0014] Because the work surface formed by the two extended panels is flush, it facilitates service operations.

[0015] Furthermore, the two extended panels are symmetrically arranged, and each extended panel has an extended panel operation recess formed on its free edge.

[0016] The extended panel operation recess allows operators to manually flip the extended panel to switch between different positions.

[0017] Furthermore, the free edge of the extended panel is formed with a first longitudinal protrusion that protrudes relative to the first surface of the extended panel, wherein, when in the folded position, the free edge of the extended panel is supported on the top surface of the food cart body by the first longitudinal protrusion, so that the extended panel is in a horizontal position.

[0018] The first longitudinal protrusion has two functions: when the extended panel is in the folded position, it supports the extended panel; when the extended panel is in the horizontally unfolded position, the first longitudinal protrusion can form a stop structure to prevent items placed on the extended panel from sliding outward.

[0019] Furthermore, the hinge edge of the extended panel is formed with a second longitudinal protrusion that protrudes relative to the second surface of the extended panel, wherein, when in the horizontally unfolded position, the hinge edge of the extended panel abuts against the side surface of the extended fixing strip through the second longitudinal protrusion, so that the extended panel is in a horizontal position.

[0020] The second longitudinal ridge has two functions: when the extended panel is in the horizontally unfolded position, it keeps the extended panel horizontal so that the extended panel can support the items; when the extended panel is in the folded position, because it protrudes upward, it can form a stop structure to prevent items placed on the extended panel from sliding outward.

[0021] Furthermore, the first surface of the extended panel and / or the second surface of the extended panel have an anti-slip coating that includes a surface texture.

[0022] An anti-slip coating with surface texture can prevent items from slipping off the extension panel and enhance the aesthetics of the food cart, thereby improving the service experience. The extension panel preferably comprises an aluminum substrate and an anti-slip coating applied to at least one, preferably two, main surfaces of the substrate. The anti-slip coating is preferably made of a latex material or a rubber-based compound.

[0023] Furthermore, the extension panel is configured in accordance with at least one of the following: the first surface and / or the second surface of the extension panel have positioning grooves for positioning items; a heating module is integrated on the extension panel; and decorative lights are integrated on the side edges of the extension panel.

[0024] Pre-set positioning grooves on the extended panel effectively prevent accidental slippage of food and beverage items. A heating module maintains food temperature, enabling premium catering services in a first-class setting. Integrated decorative lighting enhances the convenience of nighttime service and the cabin's ambiance.

[0025] Furthermore, the dining cart countertop extension assembly also includes a position locking mechanism configured to lock the extension panel in at least the vertical hover position or unlock it from the vertical hover position.

[0026] By introducing a position locking mechanism, the operational reliability of the food cart tabletop extension assembly can be improved, especially its operational reliability in the vertically suspended position. Preferably, the position locking mechanism can be a spring-loaded pin mechanism, including a spring-loaded pin fixedly connected to the extension fixing strip or the food cart body, and a positioning plate with a socket fixedly connected to the extension panel.

[0027] Furthermore, the extended fixing strip includes: a bottom groove for engaging with the top of the side panel of the food cart body; and a side groove for engaging with the longitudinal side of the top panel of the food cart body.

[0028] The slotted structure of the extended fixing strip allows the food cart tabletop extension component to be easily and securely integrated with the main body of the food cart, facilitating the modification of existing food carts and ensuring reliable use.

[0029] Furthermore, the dining cart countertop extension assembly further includes: a pivot element disposed along the pivot axis between the extension fixing strip and the extension panel, such that the extension panel is pivotally connected to the extension fixing strip, wherein the pivot element and the damping hinge are disposed at different positions along the pivot axis.

[0030] The pivot element and damping hinge form a hinge structure at different positions along the pivot axis, thereby improving the hinge stability and operational reliability of the extension panel.

[0031] Furthermore, the cart countertop extension assembly further includes: a cart handle for connecting to the cart body, the cart handle including a cart handle operating part and cart handle hinge parts extending horizontally from both ends of the cart handle operating part; wherein, the extension fixing bar includes two fixing bar hinge parts arranged along the pivot axis; wherein, the extension panel includes an extension panel first hinge part arranged along the pivot axis and two extension panel second hinge parts located at both ends of the extension panel first hinge part, wherein, the two damping hinges are respectively arranged between the two ends of the extension panel first hinge part and a corresponding fixing bar hinge part; wherein, the two pivot elements respectively pass through a corresponding extension panel second hinge part and extend one end into the fixing bar hinge part and the other end into the cart handle hinge part.

[0032] Two pivot elements are set at the two outer ends of the two damping hinges along the pivot axis, and are simultaneously connected to the extension fixing strip, the extension panel and the operating hinge of the food cart handle, so that the entire food cart tabletop extension assembly forms an organic modular structure. This facilitates the formation of hinge structures at different positions along the pivot axis together with the damping hinges, making it easy to modify existing food carts to achieve the function of extending the tabletop, and further improving the hinge stability and operational reliability of the extension panel.

[0033] Furthermore, the food cart handle also includes a food cart handle connecting portion, which is configured to extend vertically downward from both ends of the food cart handle operating portion for insertion into corresponding through holes on the frame columns of the food cart body frame of the food cart body.

[0034] The vertically extending downward connecting part of the food cart handle allows the food cart handle to be easily connected to the main body of the food cart, and also facilitates the modification of existing food carts to achieve the function of expanding the table space.

[0035] Furthermore, the outer contours of the food cart handle operating part and the food cart handle hinge part have rounded corners, and the rounded corners are flush with the arc-shaped outer contours of the first hinge part of the extended panel.

[0036] By aligning the rounded corners of the food cart handle's operating section with the arc-shaped outer contour of the first hinge of the extended panel, the comfort of operation is improved, making it more home-like and gentle, thus contributing to an enhanced overall service experience.

[0037] According to another aspect of this disclosure, an extended countertop food cart is provided, comprising a cart body, characterized in that it further comprises a food cart countertop extension component according to any of the foregoing claims.

[0038] The catering cart disclosed herein, by introducing a catering cart tabletop extension component, can provide operators with a larger and more flexible temporary operating space without significantly increasing the size and weight of the catering cart.

[0039] Furthermore, the main body of the food cart includes a main body frame and a main body side panel and a main body door panel connected to the main body frame. The substrate of the main body side panel and the main body door panel is made of aluminum-based foamed composite material, which includes an aluminum substrate and a foam layer. The main body door panel is connected to the frame column of the main body frame via a door panel hinge and includes a door panel recess recessed towards the interior space of the main body. The door panel recess is configured to accommodate a door panel handle and a door panel lock provided on the main body door panel.

[0040] The main body side panels and main body door panels of the food cart are made of aluminum-based foamed composite material, which facilitates the weight reduction of the food cart and provides appropriate thermal insulation. In addition, by setting recesses in the door panels to accommodate related door panel accessory structures (door handles, door locks, etc.), there is no need to set separate mounting bases for these accessory structures, thus contributing to weight reduction. At the same time, it also makes the overall shape of the food cart simple and beautiful, reduces interference with the external environment during operation, and improves the convenience of operation. Attached Figure Description

[0041] Figure 1 This is a perspective structural diagram of an extended countertop food cart according to an embodiment of the present disclosure;

[0042] Figure 2A It is based on Figure 1 The diagram shows a partially enlarged 3D structural schematic of the extended countertop food cart in its folded state, with two extended panels in the folded position.

[0043] Figure 2B It is based on Figure 1 The diagram shows a partially enlarged three-dimensional view of the extended tabletop food cart in its vertically suspended state, with two extended panels in the vertically suspended position.

[0044] Figure 2C It is based on Figure 1 The diagram shows a partially enlarged three-dimensional representation of the extended countertop food cart in its horizontally unfolded state, with two extended panels in the horizontally unfolded position.

[0045] Figure 2D It is based on Figure 1 The diagram shows a partially enlarged three-dimensional structural schematic of another state of the extended countertop food cart, in which only one of the two extended panels is in the horizontally unfolded position;

[0046] Figure 3 It is based on Figure 1 The diagram shows the exploded three-dimensional structure of the extended countertop food cart.

[0047] Figure 4A yes Figure 3 The diagram shows a partially enlarged, exploded three-dimensional structure of the countertop food cart, with the two extended panels in a horizontally unfolded position.

[0048] Figure 4B yes Figure 3 The diagram shows a partially enlarged, exploded three-dimensional structure of the countertop food cart, where only one of the two extended panels is in a horizontally unfolded position.

[0049] Figure 5 The extended countertop food cart according to an embodiment of this disclosure Figure 1 A schematic diagram of the longitudinal cross-sectional view along the pivot axis of the extended panel, taken by line AA.

[0050] Figure 6A The extended countertop food cart according to an embodiment of this disclosure Figure 2A The enlarged three-dimensional exploded view of the part cut by the BB line shows that the extended panel in the folded position is supported on the top plate of the main body of the food cart by the first longitudinal protrusion, and the extended panel in the horizontally unfolded position is kept in the horizontally unfolded position by the engagement of the second longitudinal protrusion and the extension fixing strip.

[0051] Figure 6B The extended countertop food cart according to an embodiment of this disclosure Figure 2D The enlarged three-dimensional exploded view of the part taken by the CC line shows that the two extended panels in the folded position are supported on the top plate of the main body of the food cart by the first longitudinal convex strip.

[0052] Figure 7 This is a schematic diagram of the structure of a damping hinge used in an extended countertop food cart according to an embodiment of the present disclosure.

[0053] In the picture:

[0054] 100. Main body of the food cart; 101. Rollers;

[0055] 110. Main frame of the dining car;

[0056] 112. Frame columns; 114. Door panel hinges;

[0057] 120. Side panels of the main body of the dining car;

[0058] 130. Main roof panel of the dining car;

[0059] 140. Main door panel of the dining car;

[0060] 141. Door panel recess; 142. Door panel handle;

[0061] 160. Food cart handle; 161. Food cart handle operating unit;

[0062] 162. Serving cart handle connecting part; 163. Serving cart handle hinge part;

[0063] 200. Food cart countertop extension components;

[0064] 210. Extended fixing strip;

[0065] 211. Hinged part of the fixing strip; 212. Groove on the bottom surface of the fixing strip;

[0066] 213. Side slot for fixing strip;

[0067] 220. Extended panel;

[0068] 221. First surface of the extension panel; 222. Second surface of the extension panel;

[0069] 223. First longitudinal protrusion; 224. Second longitudinal protrusion;

[0070] 225. First hinge part of the extension panel; 226. Second hinge part of the extension panel;

[0071] 228. Extended panel operation recess;

[0072] 250. Damped hinge;

[0073] 251. Damping hinge connection part; 252. Damping hinge fixing hole;

[0074] 260. Rotating shaft components; Detailed Implementation

[0075] The technical solutions of this disclosure will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the spirit of this disclosure are within the scope of protection of this disclosure.

[0076] Figure 1 This is a three-dimensional structural diagram of an extended countertop food cart according to an embodiment of the present disclosure. Figure 2A It is based on Figure 1 The diagram shows a partially enlarged 3D structural schematic of the extended countertop food cart in its folded state, with two extended panels in the folded position. Figure 2B It is based on Figure 1 The diagram shows a partially enlarged three-dimensional view of the extended tabletop food cart in its vertically suspended state, with two extended panels in the vertically suspended position. Figure 2C It is based on Figure 1 The diagram shows a partially enlarged three-dimensional representation of the extended countertop food cart in its horizontally unfolded state, with two extended panels in the horizontally unfolded position. Figure 2D It is based on Figure 1 The diagram shows a partially enlarged three-dimensional structure of another state of the extended countertop food cart, where only one of the two extended panels is in the horizontally unfolded position.

[0077] See Figure 1 and Figure 2A In this embodiment, the extended tabletop food cart includes a food cart body 100 and a food cart tabletop extension assembly 200 disposed on top of the food cart body 100. The bottom of the food cart body 100 is provided with casters 101.

[0078] The serving cart countertop extension assembly 200 includes an extension fixing strip 210 and an extension panel 220 connected to the extension fixing strip 210. The extension fixing strip 210 is fixed to the top of the serving cart body 100 along its longitudinal direction. The extension panel 220 has two main surfaces, namely an extension panel first surface 221 and an extension panel second surface 222 (see...). Figure 4A and Figure 4B The extension panel 220 has one longitudinal edge that is hinged and another opposite longitudinal edge that is free. The extension panel 220 is pivotally connected to the extension fixing bar 210 along the pivot axis via the hinged edge, allowing the extension panel 220 to be selectively positioned relative to the food cart body 100 in a holdable folded position, a vertically suspended position, and a horizontally unfolded position. An extension panel operation recess 228 is provided at the center of the free edge of the extension panel 220, through which an operator can rotate the extension panel 220 to different positions.

[0079] Figure 2A It is based on Figure 1 The diagram shows a partially enlarged three-dimensional view of the extended countertop food cart in its folded state, with the two extended panels 220 in the folded position. It can be seen that in the folded position, the extended panels 220 are folded above the top surface of the food cart body 100, with the second surface 222 of the extended panels facing upwards to form a work surface.

[0080] Figure 2B It is based on Figure 1 The diagram shows a partially enlarged three-dimensional structural representation of the extended countertop food cart in its vertically suspended state, with two extended panels 220 positioned vertically. As can be seen, in the vertically suspended position, the extended panels 220 extend upwards perpendicular to the top surface of the food cart body 100 (see the top plate 130 of the food cart body), forming a work surface on the top surface of the food cart body 100, and the extended panels 220 forming side panels.

[0081] Figure 2CIt is based on Figure 1 The diagram shows a partially enlarged three-dimensional structural representation of the horizontally unfolded serving cart, with two extended panels in the horizontally unfolded position. It can be seen that in the horizontally unfolded position, the extended panel 220 unfolds to a horizontal position relative to the top of the serving cart body 100 (see the top plate 130 of the serving cart body), with the first surface 221 of the extended panel facing upwards, forming a work surface with the top surface of the serving cart body 100.

[0082] Figure 2D It is based on Figure 1 The diagram shows a partially enlarged three-dimensional structural representation of another state of the extended countertop food cart, in which one of the two extended panels is in a folded position and the other is in a horizontally unfolded position. The second surface 222 of the extended panel in the folded position, the top of the food cart body 100, and the first surface 221 of the extended panel in the horizontally unfolded position all form a work surface.

[0083] The disclosed solution introduces an extension panel that is pivotally connected to the top of the food cart body via an extension fixing strip. This extension panel is configured to selectively occupy three positions, allowing the extension panel assembly and the food cart to have three different states. This provides operators with a larger and more flexible temporary operating space without significantly increasing the size and weight of the food cart. Furthermore, the combination of the extension fixing strip and the extension panel allows the food cart countertop extension assembly to form a modular structure, facilitating the modification of existing food carts to achieve extended countertop functionality.

[0084] Figure 3 It is based on Figure 1 The diagram shows the exploded three-dimensional structure of the extended countertop food cart. Figure 4A yes Figure 3 The diagram shows a partially enlarged, exploded three-dimensional structure of the countertop food cart, with the two extended panels in a horizontally unfolded position. Figure 4B yes Figure 3 The diagram shows a partially enlarged, exploded three-dimensional structure of the countertop food cart, with only one of the two extended panels in a horizontally unfolded position.

[0085] See also Figure 3 , Figure 4A and Figure 4B As can be seen, the dining cart tabletop extension assembly 200 according to this embodiment also includes a damping hinge 250, which is disposed between the extension fixing bar 210 and the extension panel 220 along the pivot axis, so that the extension panel 220 can be pivotally connected to the extension fixing bar 210 and can be held at any position within the pivot range.

[0086] A damping hinge is a type of hinge with damping function, also known as a damping pivot. Its main function is to provide stable and smooth motion control when connecting components (such as doors, covers, and flip screens) are opened, closed, or flipped. It effectively slows down movement, eliminates noise, and maintains stability of the connecting component in the required position. Damping hinges are disclosed in various existing technologies, such as CN214247979U, CN221033601U, CN207420302U, and CN212272805U. Through the damping effect of the damping hinge 250, not only can the extended panel be kept in a vertically suspended position to achieve a stopping function, but the flipping process of the extended panel can also be smooth and quiet, avoiding impact and noise. The damping hinge 250 can be implemented using any existing technology; preferably, the damping hinge 250 can be a single-line damping hinge.

[0087] Figure 7 This is a schematic diagram of a damping hinge used in an extended tabletop food cart according to an embodiment of the present disclosure. It includes damping hinge connecting portions 251 at both ends, used to connect the extended fixing strip 210 and the extended panel 220, respectively. The damping hinge connecting portions 251 are provided with damping hinge fixing holes 252.

[0088] from Figure 1 , Figure 2A-2D , Figure 3 , Figure 4A and Figure 4B As can be seen, the food cart countertop extension assembly of this embodiment includes two extension fixing strips 210 and two extension panels 220. The two extension fixing strips 210 are respectively used to be installed on both sides of the top of the food cart body 100, and the two extension panels 220 are respectively connected to one of the two extension fixing strips 210.

[0089] By setting extension fixing strips and extension panels on the top sides of the main body 100 of the catering cart, a larger operating surface and a larger temporary operating space can be provided in the horizontally unfolded state. In the vertically suspended state, the side baffles of the vertically suspended extension panels on both sides can provide a safer top operating space and a larger vertical volume.

[0090] In this embodiment, the two extension panels 220 are arranged in the same horizontal plane, so that the worktable surfaces formed by the two extension panels 220 are flush when in the folded position and the horizontally unfolded position. Because the worktable surfaces formed by the two extension panels are flush, service operations are facilitated. (See also...) Figure 2A and Figure 2CPreferably, the two extended panels 220 are arranged symmetrically on the left and right sides of the longitudinal center vertical plane of the dining car and unfold in both directions. Each extended panel 220 is configured to be approximately half the size of the main body top plate 130 of the dining car, so as to facilitate the passage of the dining car along the aisle and to facilitate the provision of passenger services to both sides of the aisle.

[0091] In one embodiment not shown, the two extension panels can optionally be configured as a double-folding structure, i.e., they are stacked on top of each other when in the folded position, so that each extension panel can be configured to be substantially the size of the main body top panel of the food cart, thus providing a larger top operating space when in the horizontally unfolded position.

[0092] See also Figure 2A and Figure 2C In this embodiment, the two extended panels 220 are symmetrically arranged, and each extended panel 220 has an extended panel operation recess 228 formed on its free edge. By providing the extended panel operation recess 228, it is convenient for the operator to manually flip the extended panel 220 to switch different positions.

[0093] See also Figure 3 , Figure 4A and Figure 4B As can be seen, in the food cart tabletop extension assembly 200 according to this embodiment, the free edge of the extension panel 220 is formed with a first longitudinal protrusion 223 that protrudes relative to the first surface 221 of the extension panel, and the hinge edge of the extension panel 220 is formed with a second longitudinal protrusion 224 that protrudes relative to the second surface 222 of the extension panel.

[0094] The following combination Figure 6A and Figure 6B The two longitudinal convex strips will be explained in detail.

[0095] Figure 6A The extended countertop food cart according to an embodiment of this disclosure Figure 2A The magnified three-dimensional exploded view taken from the BB line shows that the extended panel 220 in the folded position is supported on the main body top plate 130 of the food cart by the first longitudinal protrusion 223, and the extended panel in the horizontally unfolded position is held in the horizontally unfolded position by the engagement of the second longitudinal protrusion 224 and the extension fixing strip 210.

[0096] Figure 6B The extended countertop food cart according to an embodiment of this disclosure Figure 2DThe enlarged three-dimensional exploded view taken by the CC line shows that when in the folded position, the free edge of the extended panel 220 is supported on the top plate 130 of the main body of the food cart by the first longitudinal protrusion 223, so that the extended panel 220 is in a horizontal position. When in the horizontally unfolded position, the hinged edge of the extended panel 220 abuts against the side surface of the extended fixing strip 210 by the second longitudinal protrusion 224, so that the extended panel 220 is in a horizontal position.

[0097] The first longitudinal protrusion has two functions: when the extended panel is in the folded position, it supports the extended panel; when the extended panel is in the horizontally unfolded position, the first longitudinal protrusion forms a stop structure to prevent items placed on the extended panel from sliding outwards. The second longitudinal protrusion also has two functions: when the extended panel is in the horizontally unfolded position, it keeps the extended panel horizontal, allowing the extended panel to support items; when the extended panel is in the folded position, its upward protrusion forms a stop structure to prevent items placed on the extended panel from sliding outwards.

[0098] In one embodiment not shown, preferably, the first surface 221 and / or the second surface 222 of the extension panel have an anti-slip coating that includes a surface texture.

[0099] An anti-slip coating with surface texture can prevent items from slipping off the extension panel and enhance the aesthetics of the food cart, thereby improving the service experience. The extension panel 220 preferably comprises an aluminum substrate and an anti-slip coating applied to at least one, preferably two, main surfaces of the substrate. The anti-slip coating is preferably made of a latex material or a rubber-based compound.

[0100] In an embodiment not shown, preferably, the extension panel 220 may be configured such that at least one, preferably both, of the first surface 221 and the second surface 222 of the extension panel has a positioning groove for positioning items. By pre-setting the positioning groove on the extension panel, it is more effective to prevent food service items such as beverages from accidentally slipping off.

[0101] In an embodiment not shown, preferably, the extension panel 220 may be configured to integrate a heating module. The heating module is capable of maintaining food temperature, thereby enabling high-end catering services in a first-class setting.

[0102] In an embodiment not shown, decorative lights are preferably integrated into the side edges of the extended panel. These integrated decorative lights enhance the convenience of nighttime service and the cabin ambiance, further improving the service experience.

[0103] In an embodiment not shown, preferably, the cart countertop extension assembly further includes a position locking mechanism configured to lock the extension panel 220 in at least a vertically hovered position or unlock it from the vertically hovered position. Introducing a position locking mechanism improves the operational reliability of the cart countertop extension assembly, particularly in the vertically hovered position. Preferably, the position locking mechanism may be a spring-loaded pin mechanism, including a spring-loaded pin fixedly connected to the extension fixing bar or the cart body and a positioning plate with a socket fixedly connected to the extension panel.

[0104] See also Figure 3 , Figure 4A , Figure 4B , Figure 6A and 6B As can be seen, the extension fixing strip 210 includes a bottom mounting groove 212 and a side mounting groove 213. The bottom mounting groove 212 is used to engage with the top of the side panel 120 of the food cart body 100, and the side mounting groove 213 is used to engage with the longitudinal side of the top panel 130 of the food cart body 100. Through the groove structure of the extension fixing strip, the food cart tabletop extension assembly can be easily and firmly integrated with the food cart body, facilitating the modification of existing food carts and ensuring reliable use.

[0105] Preferably, such as Figure 3 , Figure 4A , Figure 4B As shown, the two ends of the extension fixing strip 210 can be further provided with fixing holes. By cooperating with the fasteners and fixing holes, the extension fixing strip 210 is fixed together with the side panel 120 of the main body of the food cart, thereby further improving the connection reliability between the food cart tabletop extension component and the main body of the food cart 100.

[0106] Figure 5 The extended countertop food cart according to an embodiment of this disclosure Figure 1 A schematic diagram of the longitudinal cross-sectional view along the pivot axis of the extended panel, taken by line AA. See also... Figure 5 , and in conjunction with see Figure 3 , Figure 4A , Figure 4B The dining cart tabletop extension assembly also includes a pivot element 260 disposed along the pivot axis between the extension fixing strip 210 and the extension panel 220, such that the extension panel 220 is pivotally connected to the extension fixing strip 210, wherein the pivot element 260 and the damping hinge 250 are disposed at different positions along the pivot axis.

[0107] The pivot element and the damping hinge form a hinge structure at different positions along the pivot axis, thereby improving the hinge stability and operational reliability of the extended panel. Furthermore, the pivot element, unlike the damping hinge, is a single rod-shaped element with a simple structure. When used in conjunction with the damping hinge, a more stable and reliable hinge effect can be achieved at a lower cost.

[0108] See also Figure 3 , Figure 4A , Figure 4B and Figure 5 The serving cart countertop extension assembly also includes a serving cart handle 160 for connecting to the serving cart body 100. The serving cart handle 160 includes a serving cart handle operating part 161, serving cart handle connecting parts 162 extending vertically downwards from both ends of the serving cart handle operating part 161, and serving cart handle hinge parts 163 extending horizontally from both ends of the serving cart handle operating part 161. The serving cart handle connecting parts 162 are used to insert into corresponding through holes on the frame columns 112 of the serving cart body frame 110 of the serving cart body 100. Through the vertically extending serving cart handle connecting parts, the serving cart handle can be easily connected to the serving cart body, and it is easy to modify existing serving carts to achieve the function of extending the countertop.

[0109] from Figure 3 , Figure 4A , Figure 4B As can be seen, the extension fixing bar 210 includes two fixing bar hinge portions 211 arranged along the pivot axis. The extension panel 220 includes an extension panel first hinge portion 225 arranged along the pivot axis and two extension panel second hinge portions 226 located at both ends of the extension panel first hinge portion 225. Two damping hinges 250 are respectively disposed between the two ends of the extension panel first hinge portion 225 and a corresponding fixing bar hinge portion 211. (See also...) Figure 5 As can be seen, the two pivot elements 260 pass through the corresponding second hinge portion 226 of the extended panel, with one end extending into the fixed strip hinge portion 211 and the other end extending into the food cart handle hinge portion 163.

[0110] Two pivot elements are set at the two outer ends of the two damping hinges along the pivot axis, and are simultaneously connected to the extension fixing strip, the extension panel and the operating hinge of the food cart handle, so that the entire food cart tabletop extension assembly forms an organic modular structure. This facilitates the formation of hinge structures at different positions along the pivot axis together with the damping hinges, making it easy to modify existing food carts to achieve the function of extending the tabletop, and further improving the hinge stability and operational reliability of the extension panel.

[0111] See also Figure 3 , Figure 4A , Figure 4B , Figure 6A and Figure 6B As can be seen, the outer contours of the food cart handle operating part 161 and the food cart handle hinge part 163 have rounded corners, which are flush with the arc-shaped outer contour of the first hinge part of the extension panel. By making the rounded corners of the food cart handle operating part flush with the arc-shaped outer contour of the first hinge part of the extension panel, the comfort of operation is improved, and it is more home-like and softer, which helps to improve the overall service experience.

[0112] See also Figure 3 , Figure 4A , Figure 4B According to this disclosure, the main body 100 of the extended countertop food cart includes a main frame 110 and side panels 120 and door panels 140 connected to the main frame 110. Preferably, the substrate of the side panels 120 and door panels 140 is made of aluminum-based foamed composite material, which includes an aluminum substrate and a foam layer. Making the substrate of the side panels and door panels of the food cart of aluminum-based foamed composite material facilitates the lightweighting of the food cart and provides appropriate thermal insulation.

[0113] In addition, the main door panel 140 of the food cart is connected to the frame column 112 of the main frame 110 of the food cart via a door panel hinge 114, and includes a door panel recess 141 recessed into the interior space of the main body 100 of the food cart. The door panel recess 141 is configured to accommodate a door panel handle 142 and a door panel lock provided on the main door panel 140 of the food cart. By providing a door panel recess to accommodate the relevant door panel accessory structures (door panel handle, door panel lock, etc.), there is no need to provide separate mounting bases for these accessory structures, thus achieving a certain weight reduction effect. At the same time, it also makes the overall shape of the food cart simple and beautiful, reduces interference with the external environment during operation, and improves the convenience of operation.

[0114] The catering cart countertop extension component disclosed herein, and the catering cart having the extended countertop thereon, are applicable not only to catering carts used in the aviation industry, but also to catering carts in transportation vehicles such as trains.

[0115] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from the spirit and scope of this disclosure. Therefore, if such modifications and variations to this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A food cart countertop extension assembly, characterized in that, include: An extension fixing strip (210) is used to fix the food cart body (100) longitudinally to the top of the food cart body (100); as well as An extension panel (220) has a hinged edge and a free edge opposite to the hinged edge. The extension panel (220) is pivotally connected to the extension fixing bar along a pivot axis via the hinged edge. The extension panel (220) has two main surfaces, namely an extension panel first surface (221) and an extension panel second surface (222). The extended panel (220) is configured to be selectively positioned relative to the main body of the food cart (100) in a retainable folded position, a vertically suspended position, and a horizontally unfolded position. In the folded position, the extended panel (220) is folded over the top surface of the food cart body (100), and the second surface (222) of the extended panel faces upward to form a work surface; In the vertically suspended position, the extended panel (220) extends upward perpendicular to the top surface of the food cart body (100), the top surface of the food cart body (100) forms a work surface, and the extended panel (220) forms a side baffle. In the horizontally unfolded position, the extended panel (220) is unfolded to a horizontal position relative to the top of the food cart body (100), with the first surface (221) of the extended panel facing upward, forming a work surface with the top surface of the food cart body (100).

2. The food cart countertop extension assembly according to claim 1, characterized in that, Also includes: A damping hinge (250) is disposed between the extension fixing bar (210) and the extension panel (220) along the pivot axis, such that the extension panel (220) is pivotally connected to the extension fixing bar (210) and can be held at any position within the pivot range.

3. The food cart countertop extension assembly according to claim 2, characterized in that, include: The two extended fixing strips (210) are respectively used to be installed on both sides of the top of the food cart body (100); The two extended panels (220) are respectively connected to one of the two extended fixing strips (210).

4. The food cart countertop extension assembly according to claim 3, characterized in that, The two extended panels (220) are arranged in the same horizontal plane such that the work surface formed by the two extended panels (220) is flush when in the folded position and the horizontally unfolded position.

5. The food cart countertop extension assembly according to claim 4, characterized in that, The two extended panels (220) are symmetrically arranged, and each extended panel (220) has an extended panel operation recess (228) formed on its free edge.

6. The dining cart countertop extension assembly according to any one of claims 1 to 5, characterized in that, The free edge of the extended panel (220) is formed with a first longitudinal ridge (223) that protrudes relative to the first surface (221) of the extended panel. When in the folded position, the free edge of the extended panel (220) is supported on the top surface of the food cart body (100) by the first longitudinal protrusion (223), so that the extended panel (220) is in a horizontal position.

7. The dining cart countertop extension assembly according to any one of claims 1 to 5, characterized in that, The hinge edge of the extended panel (220) is formed with a second longitudinal ridge (224) that protrudes relative to the second surface (222) of the extended panel. When in the horizontally unfolded position, the hinge edge of the extended panel (220) abuts against the side surface of the extended fixing strip (210) via the second longitudinal protrusion (224), so that the extended panel (220) is in a horizontal position.

8. The food cart countertop extension assembly according to any one of claims 1 to 5, characterized in that, The first surface (221) and / or the second surface (222) of the extended panel have an anti-slip coating that includes a surface texture.

9. The food cart countertop extension assembly according to any one of claims 1 to 5, characterized in that, The extended panel (220) is configured according to at least one of the following: The first surface (221) and / or the second surface (222) of the extension panel have positioning grooves for positioning articles; The extended panel (220) integrates a heating module; and Decorative lights are integrated into the side edges of the extended panel.

10. The food cart countertop extension assembly according to any one of claims 1 to 5, characterized in that, Also includes: A position locking mechanism is configured to lock the extended panel (220) in at least the vertical hover position or unlock it from the vertical hover position.

11. The food cart countertop extension assembly according to claim 2, characterized in that, The extended fixing strip (210) includes: The bottom surface of the fixing strip has a slot (212) for engaging with the top of the side panel (120) of the main body of the food cart (100); and The fixing strip side slot (213) is used to engage with the longitudinal side of the food cart body top plate (130) of the food cart body (100).

12. The food cart countertop extension assembly according to claim 2, characterized in that, Also includes: A pivot element (260) is disposed between the extension fixing bar (210) and the extension panel (220) along the pivot axis, such that the extension panel (220) is pivotally connected to the extension fixing bar (210). The pivot element (260) and the damping hinge (250) are located at different positions along the pivot axis.

13. The food cart countertop extension assembly according to claim 12, characterized in that, Also includes: A food cart handle (160) for connecting to the food cart body (100), the food cart handle (160) includes a food cart handle operating part (161) and food cart handle hinge parts (163) extending horizontally from both ends of the food cart handle operating part (161). The extended fixing bar (210) includes two fixing bar hinge portions (211) arranged along the pivot axis; The extended panel (220) includes a first hinge portion (225) of the extended panel disposed along the pivot axis and two second hinge portions (226) of the extended panel located at both ends of the first hinge portion (225). The two damping hinges (250) are respectively disposed between the two ends of the first hinge portion (225) of the extended panel and a corresponding fixed bar hinge portion (211); The two pivot elements (260) pass through the corresponding second hinge portion (226) of the extended panel and extend one end into the hinge portion (211) of the fixing strip and the other end into the hinge portion (163) of the food cart handle.

14. The food cart countertop extension assembly according to claim 13, characterized in that, The cart handle (160) also includes a cart handle connector (162), which is configured to extend vertically downward from both ends of the cart handle operating part (161) for insertion into corresponding through holes on the frame column (112) of the cart body frame (110) of the cart body (100).

15. The food cart countertop extension assembly according to claim 13, characterized in that, The outer contours of the food cart handle operating part (161) and the food cart handle hinge part (163) have rounded corners, which are flush with the arc-shaped outer contour of the first hinge part of the extended panel.

16. An extended tabletop food cart, comprising a cart body (100), characterized in that, It also includes the food cart countertop extension assembly according to any one of claims 1 to 15.

17. The extended countertop food cart according to claim 16, characterized in that, The main body of the food cart (100) includes a main body frame (110) and a main body side panel (120) and a main body door panel (140) connected to the main body frame (110). The main body side panel (120) and the main body door panel (140) are made of aluminum-based foamed composite material, which includes an aluminum substrate and a foam layer. The main body door panel (140) is connected to the frame column (112) of the main body frame (110) by a door panel hinge (114) and includes a door panel recess (141) recessed toward the interior space of the main body of the food cart (100). The door panel recess (141) is configured to accommodate a door panel handle (142) and a door panel lock provided on the main body door panel (140).

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