Aircraft trolley dry ice box button pop-up mechanism

Abstract

The utility model relates to an aviation trolley dry ice box button pop -out mechanism, including base frame, top board and dry ice box, the upper plate and lower plate are installed in the base frame below the top board from top to bottom in proper order, and the dry ice box is installed in the sliding cavity between the upper plate and lower plate along the front -back direction, the dry ice box includes the outer box body and the storage cavity at the inner side of the outer box body top, at least one side of the left and right sides of the front end of the outer box body is provided with the locking groove, and at least one side of the left and right sides of the front end in the sliding cavity is installed with the locking pop -out subassembly that is matched with above locking groove. The utility model adopts independent locking pop -out subassembly, and directly clamps through the locking groove of the dry ice box and the fender, and does not rely on external components.

Description

Technical Field

[0001] This utility model relates to the technical field of aviation catering carts, and in particular to a button pop-out mechanism for dry ice boxes on aviation trolleys. Background Technology

[0002] Airline catering carts are devices designed to facilitate the transport of food by flight attendants. Their invention makes them convenient for people to use, as they are not only simple in structure but also easy to operate.

[0003] A search revealed Chinese patent publication number CN215155693U, which discloses a general-purpose aviation handcart. The cart body has a first storage area and a second storage area. The top of the cart body has a placement area with two flip-top doors located above the first and second storage areas respectively. The two flip-top doors are respectively hinged to the two sides of a cover plate located in the middle of the top surface of the cart body. The first storage area has a dry ice box that can be pulled out or pushed back from the back of the cart body and several drawers. The second storage area has a trash can that can be tilted out from the front of the cart body. The side of the trash can is hinged to a lower slot opened in the inner side wall of the cart body. The two side walls of the trash can have a slider with one end that can slide in the slot and the other end of the slider is locked in an upper slot. The trash can has a liquid container and two paper cup containers hanging on the same front wall of the trash can. The liquid container and the paper cup containers are integrally formed with hooks.

[0004] In the existing dry ice box installation structure of aviation trolleys, the locking of the dry ice box relies on the locking pin on the dry ice box being engaged in the lock hole of the flip door. The locking function is strongly associated with the flip door on the top of the vehicle body. At the same time, the locking function of the dry ice box depends on the lock hole of the flip door. If the flip door or the locking pin is damaged, both the dry ice box and the flip door need to be repaired at the same time, which increases the maintenance complexity.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a button pop-out mechanism for dry ice boxes on an aviation trolley, making it more valuable for industrial use. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a button pop-out mechanism for dry ice boxes on an aviation trolley.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An aircraft trolley dry ice box button pop-out mechanism includes a base frame, a top plate, and a dry ice box;

[0009] An upper plate and a lower plate are installed sequentially from top to bottom in the base frame below the top plate, and the dry ice box is installed in the sliding cavity between the upper plate and the lower plate along the front-to-back direction;

[0010] The dry ice box includes an outer box body and a storage cavity located inside the top of the outer box body. At least one of the left and right sides of the front end of the outer box body is provided with a locking groove, and at least one of the left and right sides of the front end of the sliding cavity is provided with a locking pop-out component that is compatible with the locking groove.

[0011] The locking ejection assembly includes a locking housing mounted on a base frame, a button installed at the front end inside the locking housing, a stop block installed at the rear end inside the locking housing, and a push block installed at the rear end of the button. The push block is connected to the stop block via a connecting rod. When the button is driven to move back and forth, the stop block is moved left and right via the connecting rod, so that the stop block can be engaged in the locking groove.

[0012] As a further improvement of this utility model, a top plate handle is installed on the base frame at the front end of the top plate.

[0013] As a further improvement of this utility model, ice box guide rails are installed in the sliding cavities on both the left and right sides of the outer box.

[0014] As a further improvement of this utility model, a box handle is installed at the front end of the outer box, and box hand-holding parts are provided on both the left and right sides near the rear of the outer box.

[0015] As a further improvement of this utility model, the locking housing is mounted on the base frame via a mounting bracket on the top side.

[0016] As a further improvement of this utility model, the locking housing is divided into a push block movable cavity and a stop block movable cavity from front to back by a partition. The button drives the push block to move back and forth in the push block movable cavity. The front end of the connecting rod is installed in the push block slot on the rear side of the push block. The rear end of the connecting rod passes through the second notch on the partition and then connects with the stop block. The stop block moves left and right in the stop block movable cavity.

[0017] As a further improvement of this utility model, a number of springs distributed along the front-back direction are installed between the rear side of the push block and the partition.

[0018] As a further improvement of this utility model, a limiting block is provided on the top of the push block, and a limiting groove is provided on the top of the locking housing for the limiting block to move back and forth.

[0019] As a further improvement of this utility model, a first notch is provided on the top of the locking housing outside the limiting groove, which is distributed in the left-right direction.

[0020] By means of the above solution, this utility model has at least the following advantages:

[0021] This invention employs an independent locking ejection assembly, which directly engages with the locking groove of the dry ice box via a stop block, without relying on external components.

[0022] The push block of this utility model is provided with a limiting block at the top and a limiting groove at the top of the locking housing to limit the range of forward and backward movement of the push block and avoid damage to the components due to excessive pressing.

[0023] This utility model's locking ejection assembly is independently fixed to the base frame via a mounting bracket, separate from components such as the dry ice box and guide rail. Individual components (such as buttons and springs) can be replaced individually when damaged, without disassembling the overall structure.

[0024] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a button pop-out mechanism for a dry ice box on an aviation trolley according to this utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the structure of a medium-dry ice box;

[0028] Figure 3 yes Figure 1 A schematic diagram of the structure of the locking pop-out component;

[0029] Figure 4 yes Figure 3 A schematic diagram of the structure on the other side.

[0030] The meanings of the labels in the figures are as follows.

[0031] 1. Base frame; 2. Top plate; 3. Top plate handle; 4. Upper plate; 5. Lower plate; 6. Dry ice box; 7. Locking pop-out assembly; 8. Ice box guide rail; 9. Outer box body; 10. Storage cavity; 11. Box body handle; 12. Locking groove; 13. Box body handhold; 14. Locking housing; 15. Mounting bracket; 16. Button; 17. Limiting block; 18. Limiting groove; 19. First notch; 20. Stop block movable cavity; 21. Push block movable cavity; 22. Push block; 23. Connecting rod; 24. Push block latch; 25. Spring; 26. Partition; 27. Second notch; 28. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] The first embodiment of this utility model:

[0035] like Figures 1-4 As shown,

[0036] A dry ice box ejection mechanism for an aircraft trolley includes a base frame 1, a top plate 2, and a dry ice box 6. An upper plate 4 and a lower plate 5 are sequentially installed from top to bottom within the base frame 1 below the top plate 2. The dry ice box 6 is installed in a sliding cavity between the upper plate 4 and the lower plate 5 along the front-back direction. A top plate handle 3 is installed on the base frame 1 at the front end of the top plate 2.

[0037] The dry ice box 6 includes an outer box body 9 and a storage cavity 10 located inside the top of the outer box body 9. At least one of the left and right sides of the front end of the outer box body 9 is provided with a locking groove 12, and at least one of the left and right sides of the front end of the sliding cavity is equipped with a locking pop-out component 7 that is adapted to the locking groove 12.

[0038] It employs an independent locking ejection assembly (installed at the front end of the sliding cavity), which directly engages with the locking groove of the dry ice container via a stop, without relying on external components (such as a flip-top door). The locking force is provided by a spring; when the button is pressed, the stop precisely disengages from the locking groove, and when released, the spring automatically returns to its locking position, ensuring that the dry ice container remains stable and fixed when not in operation, preventing loosening caused by flight turbulence.

[0039] Ice box guide rails 8 are installed in the sliding cavities on both sides of the outer box 9. The ice box guide rails (such as linear slider guide rails) on the left and right sides of the dry ice box are precisely matched with the sliding cavities (between the upper and lower plates). The length of the guide rail is slightly shorter than the dry ice box's pull-out stroke to prevent the dry ice box from completely disengaging from the track.

[0040] A box handle 11 is installed at the front end of the outer box 9, and box handles 13 are provided on the left and right sides near the rear of the outer box 9.

[0041] The locking ejection assembly 7 includes a locking housing 14 mounted on the base frame 1. A button 16 is installed at the front end inside the locking housing 14, and a stop block 20 is installed at the rear end inside the locking housing 14. A push block 23 is installed at the rear end of the button 16. The push block 23 is connected to the stop block 20 through a connecting rod 24. When the button 16 is driven to move back and forth, the stop block 20 is driven to move left and right through the connecting rod 24, so that the stop block 20 can be engaged in the locking groove 12.

[0042] The locking housing 14 is mounted on the base frame 1 via the mounting bracket 15 on the top side, and is separate from components such as the dry ice box and guide rail. Individual components (such as buttons and springs) can be replaced individually if damaged, without disassembling the overall structure.

[0043] The locking housing 14 is divided into a push block movable cavity 22 and a stop block movable cavity 21 from front to back by a partition 27. The button 16 drives the push block 23 to move back and forth in the push block movable cavity 22. The front end of the connecting rod 24 is installed in the push block slot 25 on the rear side of the push block 23, and the rear end of the connecting rod 24 passes through the second notch 28 on the partition 27 and then connects to the stop block 20. The stop block 20 moves left and right in the stop block movable cavity 21. Several springs 26 distributed along the front-back direction are installed between the rear side of the push block 23 and the partition 27.

[0044] A limit block 17 is provided on the top of the push block 23, and a limit groove 18 is provided on the top of the locking housing 14 to limit the forward and backward movement of the limit block 17. The forward and backward movement range of the push block is limited (corresponding to the stroke of the stop block fully engaging / disengaging from the locking groove) to avoid damage to the components due to excessive pressing.

[0045] A first notch 19 is provided on the top of the locking housing 14 outside the limiting groove 18, distributed in the left-right direction.

[0046] The second embodiment of this utility model:

[0047] This embodiment provides a button pop-out mechanism for a dry ice box on an aviation trolley, designed to achieve stable locking and convenient pulling out of the dry ice box, and is applicable to the refrigeration function module of an aviation trolley.

[0048] Its specific structure is as follows:

[0049] I. Main Framework:

[0050] Base frame 1: As an overall support structure, it is made of aluminum alloy profiles and has the characteristics of lightweight and high strength.

[0051] Top plate 2: Horizontally installed on top of base frame 1, it can be made of 3mm thick stainless steel plate, and the front end is fixed with a plastic top plate handle 3 by bolts, which makes it easy for operators to push and pull the entire mechanism.

[0052] Upper plate 4 and lower plate 5: can be galvanized steel plates of 2mm thickness, installed parallel to each other from top to bottom in the base frame 1 below the top plate 2, with a distance of 150mm between them, forming a rectangular sliding cavity for the dry ice 6 to slide.

[0053] II. Dry Ice Box Components:

[0054] Outer box 9: Made of food-grade PP material by injection molding, the overall structure is a cuboid (400mm long × 250mm wide × 120mm high), with a recessed top to form a storage cavity 10 for storing dry ice.

[0055] Locking groove 12: Symmetrically opened on the left and right sides of the front end of the outer box 9, it is a wedge-shaped groove with a depth of 8mm and a width of 10mm, and the groove opening is provided with a 30° inclined guide surface (which can be an arc-shaped curved surface structure).

[0056] Auxiliary components: The front center of the outer box 9 is fixed with a TPU handle 11 (100mm long × 30mm wide × 20mm high, with anti-slip texture on the surface) by screws; the left and right side walls near the rear are integrally formed with box handles 13 (protruding 15mm from the wall surface, making it easy to apply force when pulling out).

[0057] III. Sliding Guide Mechanism:

[0058] Ice box guide rail 8: Symmetrically installed on the left and right sides of the sliding cavity (lower surface of upper plate 4 and upper surface of lower plate 5), using a wear-resistant nylon U-shaped groove guide rail (length 350mm, groove width 12mm), with polytetrafluoroethylene lubricating coating sprayed on the inner side; the outer box body 9 has corresponding 10mm thick sliders on the left and right sides, which are fitted with the guide rail with a clearance (0.5mm).

[0059] IV. Locking the pop-up component:

[0060] Locking housing 14: Made of ABS engineering plastic injection molding (120mm long × 50mm wide × 40mm high), it is fixed to the inner wall of the base frame 1 by the top L-shaped metal mounting bracket 15, and the mounting bracket and the base frame are fastened by 4 M4 screws.

[0061] Internal cavity division: The shell is divided into a front push block movable cavity 22 (60mm long) and a rear stop block movable cavity 21 (50mm long) by a vertical partition 27 (3mm thick). A second notch 28 with a diameter of 8mm is opened in the middle of the partition.

[0062] core components

[0063] Button 16: Located at the front end of the locking housing 14, it adopts a circular protrusion structure (diameter 20mm, height 5mm), and the rear end is integrally formed with the push block 23.

[0064] Push block 23: Rectangular structure (50mm long × 20mm wide × 30mm high), with spring seats symmetrically arranged on the left and right sides of the rear, and a rectangular limiting block 17 (15mm long × 8mm wide × 5mm high) at the center of the top.

[0065] Stop 20: a cuboid structure (25mm long × 10mm wide × 30mm high), with a wedge-shaped protrusion at the front end that matches the locking groove, and the rear end is hinged to the connecting rod 24 via a pin.

[0066] Link 24: A metal rod with a diameter of 5mm. Its front end is hinged to push block 23 through push block slot 25, and its rear end passes through second notch 28 and is connected to stop block 20.

[0067] Spring 26: Two 65Mn compression springs (6mm in diameter, 25mm in free length), with their ends respectively snapped into the spring seat of the push block and the spring groove on the front side of the partition plate.

[0068] Limiting structure: The top of the locking housing 14 has a limiting groove 18 with a length of 25mm (for the limiting block 17 to move), and the outer side has a first notch 19 with a width of 10mm (to avoid the limiting block). 2mm thick rubber buffer pads are attached to both ends of the limiting groove.

[0069] Brief description of the work process:

[0070] 1. Locked state

[0071] Under normal conditions, spring 26 is in its naturally extended state, pushing push block 23 to the front end of push block movable cavity 22. At this time, connecting rod 24 drives stop block 20 to move inward (towards the dry ice box), and the wedge-shaped protrusion of stop block 20 is completely engaged in the locking groove 12 of outer box 9, and dry ice box 6 is firmly locked in sliding cavity, unable to be pulled back or forth. Limit block 17 is located at the front end of limit groove 18 and contacts the front buffer pad.

[0072] 2. Unlocking the pull-out process

[0073] When it is necessary to remove the dry ice box to replenish the dry ice, the operator presses the button 16 at the front end of the locking housing 14 with one hand. The button causes the push block 23 to move backward along the push block movable cavity 22, compressing the spring 26 to generate elastic potential energy. During the movement of the push block, the connecting rod 24 rotates around the hinge point, causing the stop block 20 to move outward (away from the direction of the dry ice box) until the stop block is completely disengaged from the locking groove 12. At this time, the limit block 17 moves backward along the limit groove 18 to the end and contacts the rear buffer pad, indicating that the unlocking is in place. The operator holds the box handle 11 and the box hand-held part 13 with both hands respectively, and smoothly pulls the dry ice box 6 out of the sliding cavity along the ice box guide rail 8 to add dry ice into the storage cavity 10.

[0074] 3. Reset and locking process

[0075] After replenishment, the operator pushes the dry ice box 6 back into the sliding cavity along the ice box guide rail 8, and the front end of the outer box 9 gradually approaches the locking ejection component. Releasing the pressed button 16 releases the elastic potential energy of the spring 26, pushing the push block 23 forward to reset, and the connecting rod 24 drives the stop block 20 to move inward. When the dry ice box is fully returned to its original position, the stop block 20, under the action of the spring, smoothly slides into the groove through the wedge-shaped guide surface of the locking groove 12, completing the locking. The limit block 17 returns to the front end of the limit groove 18 along with the push block, and the entire mechanism returns to the locked state.

[0076] Through the above structural design and working process, the mechanism achieves stable locking and convenient operation of the dry ice box, effectively solving the problems of unreliable locking and cumbersome operation in traditional structures, and is suitable for high-frequency use scenarios of aviation trolleys.

[0077] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0078] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0079] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A button pop-out mechanism for a dry ice box on an aircraft trolley, comprising a base frame (1), a top plate (2), and a dry ice box (6); Its features are: An upper plate (4) and a lower plate (5) are installed sequentially from top to bottom in the base frame (1) below the top plate (2), and the dry ice box (6) is installed in the sliding cavity between the upper plate (4) and the lower plate (5) along the front-back direction; The dry ice box (6) includes an outer box body (9) and a storage cavity (10) located inside the top of the outer box body (9). At least one of the left and right sides of the front end of the outer box body (9) is provided with a locking groove (12). At least one of the left and right sides of the front end of the sliding cavity is provided with a locking pop-out component (7) that is compatible with the locking groove (12). The locking ejection assembly (7) includes a locking housing (14) mounted on a base frame (1). A button (16) is installed at the front end of the locking housing (14), and a stop block (20) is installed at the rear end of the locking housing (14). A push block (23) is installed at the rear end of the button (16). The push block (23) is connected to the stop block (20) via a connecting rod (24). When the button (16) is driven to move back and forth, the stop block (20) is driven to move left and right via the connecting rod (24), so that the stop block (20) can be engaged in the locking groove (12).

2. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, A top plate handle (3) is installed on the base frame (1) at the front end of the top plate (2).

3. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, Ice box guide rails (8) are installed in the sliding cavities on both the left and right sides of the outer box (9).

4. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, A box handle (11) is installed at the front end of the outer box (9), and box hand grips (13) are provided on both the left and right sides near the rear of the outer box (9).

5. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, The locking housing (14) is mounted on the base frame (1) via a mounting bracket (15) on the top side.

6. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, The locking housing (14) is divided into a push block movable cavity (22) and a stop block movable cavity (21) from front to back by a partition (27). The button (16) drives the push block (23) to move back and forth in the push block movable cavity (22). The front end of the connecting rod (24) is installed in the push block slot (25) on the rear side of the push block (23). The rear end of the connecting rod (24) passes through the second notch (28) on the partition (27) and then connects with the stop block (20). The stop block (20) moves left and right in the stop block movable cavity (21).

7. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 6, characterized in that, Several springs (26) are installed between the rear side of the push block (23) and the partition plate (27) along the front-back direction.

8. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 1, characterized in that, A limiting block (17) is provided on the top of the push block (23), and a limiting groove (18) is provided on the top of the locking housing (14) for limiting the forward and backward movement of the limiting block (17).

9. The button pop-out mechanism for a dry ice box on an aviation trolley as described in claim 8, characterized in that, A first notch (19) is provided on the top of the locking housing (14) outside the limiting groove (18) and distributed in the left-right direction.

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