A liftable packaging box

Abstract

The utility model discloses a liftable packing box, including outer tube and bottom disc frame, the outer tube inner wall and inner tube outer wall form clearance fit, just the inner tube can be along the relative sliding displacement of outer tube axial, the inner tube top is equipped with the top cover of sliding connection with outer tube, the inboard of top cover is equipped with the limit ring and the inner tube clasp joint, the inner tube bottom fixed connection is equipped with the base of through -hole, and the base is through the clamping piece of through -hole and is connected with the lift spring clasp joint, the bottom disc frame is fixed in the bottom side of outer tube inside, and the center position is equipped with the center column of cooperation with the clamping piece, the center column top fixed connection has the cone convex block no.

Description

Technical Field

[0001] This utility model relates to the field of packaging container structure design technology, specifically a liftable packaging box. Background Technology

[0002] A packaging box is a rigid or semi-rigid container used to hold, protect, display, or transport products. It is usually made of cardboard, plastic, metal, or composite materials and has a basic structure such as a box body and a lid.

[0003] In existing packaging box technology, there is a common problem of balancing protection and ease of use. Traditional packaging boxes often use a structure where the lid and box body fit together tightly to enhance the protection of the contents. However, this design often results in insufficient integration between the lid and the box body when the box is not opened, making it easy to be accidentally touched or pried open, increasing the risk of damage to the items or premature opening. On the other hand, if an easy-to-open structure is adopted to pursue ease of use, the protective performance of the packaging box is sacrificed. Moreover, after opening most packaging boxes, the inner liner cannot be effectively raised or lowered, making it inconvenient to retrieve items located deep inside the box. This is especially true for small or valuable items, and frequent handling may cause secondary damage. It fails to meet users' dual needs for packaging boxes that provide reliable protection, ensure that the lid and outer cylinder are completely integrated before opening to prevent accidental opening, and allow for easy access to items after opening by raising the inner liner.

[0004] Therefore, a height-adjustable packaging box is proposed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a liftable packaging box to solve the problem mentioned in the background art that the existing packaging box technology cannot balance protection and ease of use. That is, the traditional structure either has insufficient integration between the lid and the box body, which makes it easy to open accidentally and affect protection, or the inner liner cannot be raised and lowered, which makes it inconvenient to take out items deep inside. It cannot meet the dual requirements of the lid and the outer cylinder being completely integrated to prevent accidental opening when not opened, and the inner liner rising to facilitate access after opening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a liftable packaging box, including an outer cylinder and a base frame, wherein the inner wall of the outer cylinder and the outer wall of the inner cylinder form a clearance fit, and the inner cylinder can slide relative to the outer cylinder along the axial direction, and the top of the inner cylinder is provided with a top cover that is slidably connected to the outer cylinder, and a limiting ring is provided on the inner side of the top cover that is engaged with the inner cylinder;

[0007] The bottom of the inner cylinder is fixedly connected to a base with a through hole, and the base is engaged with the lifting spring through a snap-fit ​​component that passes through the through hole.

[0008] The chassis frame is fixed to the bottom side inside the outer cylinder, and a central column that mates with the snap-fit ​​component is provided at its center. A frustum-shaped protrusion is fixedly connected to the top of the central column.

[0009] The upper and lower ends of the lifting spring are respectively engaged with the locking clips on the locking component and the chassis frame.

[0010] Preferably, the limiting ring of the top cover forms an axial limiting structure with the top end of the inner cylinder, and the outer wall of the top cover forms a sliding guide structure with the inner wall of the outer cylinder.

[0011] Preferably, the locking component is integrally formed by a fixing buckle, a disc, and a limiting buckle. One end of the fixing buckle passes through the through hole and engages with the top of the lifting spring. One side of the disc is fixed to the upper surface of the base. One end of the limiting buckle passes through the base and engages with the conical protrusion.

[0012] Preferably, the number of through holes is four and they are evenly distributed along the circumference of the base, and the chassis frame is provided with eight radially evenly distributed fixing buckles.

[0013] Preferably, the central column is further fitted with a second axially movable frustoconical protrusion.

[0014] Preferably, the inner cylinder and the outer cylinder, as well as the top cover and the outer cylinder, are axially sliding sealed together.

[0015] Preferably, the base is fixedly connected to the bottom of the inner cylinder and the chassis frame is fixedly connected to the bottom of the outer cylinder by adhesive bonding.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This liftable packaging box, through optimized structural design, achieves both reliable protection and anti-accidental opening when unopened, and improves ease of use by steadily rising through the inner liner after opening, thus balancing protection, convenience, and structural stability. Its specific details are as follows:

[0017] 1. Enhanced protective reliability and effective prevention of accidental opening risk: This utility model achieves complete fusion between the top cover and the outer cylinder when not in use through the engaging connection between the inner limiting ring of the top cover and the inner cylinder, and the sliding guide structure between the outer wall of the top cover and the inner wall of the outer cylinder. Combined with the axial sliding sealing fit between the inner and outer cylinders, and between the top cover and the outer cylinder, it enhances the overall sealing and structural integrity of the packaging box, effectively avoiding the risk of accidental contact or prying caused by insufficient fusion between the lid and the box body in traditional packaging boxes. This reduces the possibility of damage to the internal items or premature opening, providing more reliable protection for the items.

[0018] 2. Achieves stable lifting and lowering of the inner liner, enhancing ease of access: Utilizing the axial sliding fit between the inner and outer cylinders, and the snap-fit ​​connection between the base and the lifting spring, when the box is opened, the elastic force of the lifting spring drives the inner cylinder to slide upwards along the outer cylinder's axis, causing the contents to rise synchronously. This design effectively solves the problem of traditional packaging boxes where contents are difficult to access, especially for small or valuable items. They can be easily retrieved without frequent handling, reducing the risk of secondary damage caused by improper handling and significantly improving convenience and safety.

[0019] 3. Stable and reliable structural design, extending service life: The locking mechanism is integrally formed by a fixing buckle, a disc, and a limiting clip. The fixing buckle engages with the top of the lifting spring, and the limiting clip elastically engages with the conical protrusion on the central column. Combined with the evenly distributed fixing buckles on the chassis frame that secure the bottom of the lifting spring, this ensures the stability of the lifting spring during expansion and contraction under stress, preventing swaying or displacement of the inner cylinder during lifting. Simultaneously, the base is fixedly connected to the bottom of the inner cylinder, and the chassis frame is fixed to the bottom of the outer cylinder through adhesive bonding, further enhancing the overall structural robustness, reducing structural loosening issues during long-term use, and extending the service life of the packaging box.

[0020] 4. Balancing protection and convenience: Through ingenious structural design, this utility model ensures that the lid and outer cylinder are tightly integrated to achieve reliable protection when the box is not opened, while the inner cylinder is driven to rise by a lifting spring to make it easy to take out the items after opening. It successfully balances the protection and ease of use that traditional packaging boxes struggle to achieve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of the outer cylinder of the packaging box after it has been opened.

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer cylinder of the packaging box of this utility model in the unopened state;

[0023] Figure 3 This is a schematic diagram of the structure of the limiting ring in this utility model;

[0024] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the lifting spring;

[0025] Figure 5 This is a schematic diagram of the installation structure of the base and the snap-fit ​​component of this utility model;

[0026] Figure 6 This is a schematic diagram of the compression state structure of the lifting spring in this utility model;

[0027] Figure 7This is a schematic diagram of the chassis frame structure in this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the truncated cone protrusion and the limiting card in the unlocked state in this utility model.

[0029] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Top cover; 301. Limiting ring; 4. Base; 401. Through hole; 5. Snap-fit ​​component; 501. Fixing buckle one; 502. Disc; 503. Limiting clip; 6. Lifting spring; 7. Chassis frame; 8. Fixing buckle two; 9. Center column; 10. Conical protrusion one; 11. Conical protrusion two. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0031] like Figure 1-2 As shown, the liftable packaging box provided by this utility model mainly consists of an outer cylinder 1, an inner cylinder 2, a top cover 3, a base 4, a snap-fit ​​component 5, a lifting spring 6, a chassis frame 7, and related auxiliary components. The components work together to achieve stable lifting and positioning of the inner cylinder relative to the outer cylinder.

[0032] like Figure 1 As shown, the outer cylinder 1 is a cylindrical structure with an axial cavity, and its inner wall is treated with a smooth finish to provide a guiding basis for the sliding of the inner cylinder 2. The inner cylinder 2 is a cylindrical structure adapted to the outer cylinder 1, and its outer wall forms a clearance fit with the inner wall of the outer cylinder 1. This clearance is controlled within the range of 0.1mm-0.3mm, which ensures that the inner cylinder 2 can make smooth relative sliding displacement along the axial direction of the outer cylinder 1, while avoiding radial wobble during the sliding process. The materials of the inner cylinder 2 and the outer cylinder 1 can be rigid cardboard, ABS plastic, or acrylic, etc., providing a certain structural strength and aesthetics.

[0033] like Figure 2-3As shown, the top cover 3 is located at the top of the inner cylinder 2, and its outer wall forms a sliding guide structure with the inner wall of the outer cylinder 1. The outer diameter of the top cover 3 is slightly smaller than the inner diameter of the outer cylinder 1, and the fitting clearance is also controlled at 0.1mm-0.3mm to ensure the stability of the top cover 3 when it rises and falls synchronously with the inner cylinder 2. A limiting ring 301 is integrally formed on the inner side of the top cover 3. The inner diameter of the limiting ring 301 is adapted to the outer diameter of the top of the inner cylinder 2, and the two form an interference fit locking connection structure. The axial height of the limiting ring 301 is 5mm-8mm, which can effectively limit the axial position of the top of the inner cylinder 2 and prevent the inner cylinder 2 from separating from the top cover 3.

[0034] like Figure 1 and Figure 5 As shown, a base 4 is fixedly connected to the bottom of the inner cylinder 2. The base 4 adopts a circular plate structure, and its outer diameter is adapted to the inner diameter of the inner cylinder 2. The two are fixedly connected by an environmentally friendly adhesive, and the bonding strength of the bonding surface is not less than 0.5 MPa. The base 4 has four through holes 401, which are evenly distributed along the circumference of the base 4. The central angle between adjacent through holes 401 is 90°. The diameter of the through holes 401 is adapted to the diameter of the fixing buckle 501 of the snap fastener 5.

[0035] like Figure 5 and Figure 8 As shown, the snap-fit ​​component 5 is integrally molded from elastic plastic material and consists of a fixing buckle 501, a disc 502, and a limiting buckle 503. The fixing buckle 501 has a J-shaped structure, with one end penetrating through the through hole 401 and engaging with the top of the lifting spring 6. The end of the buckle has a protrusion with a diameter slightly larger than the inner diameter of the spring to ensure the reliability of the spring connection. One side of the disc 502 is fixed to the upper surface of the base 4 with adhesive to enhance the stability of the connection between the snap-fit ​​component 5 and the base 4. The limiting buckle 503 is a cylindrical structure with a certain elastic deformation capability. One end of it penetrates through the corresponding mounting hole in the base 4 and extends downward. The end has an arc-shaped protrusion that engages with the conical protrusion 10 in an elastic snap-fit ​​connection.

[0036] like Figure 2 and Figure 6 As shown, the chassis frame 7 is a circular frame structure, which is fixed to the bottom side of the outer cylinder 1 with environmentally friendly adhesive. A central column 9 extends vertically upward from the center of the chassis frame 7. The central column 9 is integrally formed with the chassis frame 7. A frustum protrusion 10 is fixedly connected to its top. The outer wall of the frustum protrusion 10 is an inclined surface with an inclination angle of 30-45°, which facilitates sliding engagement with the limit card 503.

[0037] like Figure 7As shown, a second truncated cone protrusion 11 that can move axially is also fitted on the central column 9. The inner wall of the second truncated cone protrusion 11 forms a clearance fit with the outer wall of the central column 9. Its relative position with the first truncated cone protrusion 10 can be adjusted by moving it up and down, thereby adjusting the tightness of the locking clip 503. The chassis frame 7 is also provided with eight radially evenly distributed fixing clips 8. The central angle between adjacent fixing clips 8 is 45°. The structure of the fixing clips 8 is adapted to the fixing clip 501. The lower end of the lifting spring 6 is engaged and connected to the fixing clips 8.

[0038] Working principle: Before using this type of liftable packaging box, it is necessary to check the overall condition of the device to ensure it can work normally. Figure 1 - Figure 8 As shown, in the unopened state, the inner cylinder 2 is housed inside the outer cylinder 1 through a gap fit between the inner wall of the outer cylinder 1 and the top cover 3 covers the top of the outer cylinder 1. Its outer wall and the inner wall of the outer cylinder 1 form a sliding guide structure. The inner limiting ring 301 engages with the top of the inner cylinder 2 to form an axial limit, ensuring the stability of the overall structure. At this time, the lifting spring 6 is in the initial compression state. Its top end is connected to the base 4 through the fixing buckle 501 of the snap-fit ​​part 5, and its bottom end is engaged with the fixing buckle 8 of the chassis frame 7. The end of the limiting buckle 503 of the snap-fit ​​part 5 is elastically engaged with the conical protrusion 10 on the central column 9. Through the limiting action of the bottom end of the conical protrusion 10, the inner cylinder 2 and the outer cylinder 1 are relatively fixed.

[0039] When the packaging box needs to be opened, first press the top cover 3 inward. The external force is transmitted to the inner cylinder 2 through the top cover 3, causing the inner cylinder 2 to slide downward along the axial direction of the outer cylinder 1. Since the bottom of the inner cylinder 2 is fixedly connected to the base 4, the base 4 moves downward synchronously with the inner cylinder 2, thereby causing the snap-fit ​​5 that passes through the through hole 401 of the base 4 to move downward as a whole. During this process, the fixing buckle 501 of the snap-fit ​​5 pulls the top of the lifting spring 6 downward synchronously, so that the lifting spring 6 is continuously compressed, and the elastic potential energy gradually accumulates.

[0040] As the snap-fit ​​5 moves downward, the end of its limiting snap 503 slides along the outside of the central post 9, gradually moving from above the second cone protrusion 11 sleeved on the central post 9 to below the second cone protrusion 11, thus completing the switching of the limiting position.

[0041] When the end of the limit card 503 moves below the second cone protrusion 11, the pressing force on the top cover 3 is removed. At this time, the compressed lifting spring 6 releases its elastic potential energy, and its top end pushes the locking piece 5 upward through the fixing buckle 501, thereby driving the base 4, inner cylinder 2 and top cover 3 to move upward synchronously.

[0042] During the ascent, the end of the limiting clip 503 of the locking component 5 pushes the second conical protrusion 11 to slide upward along the central column 9 until the lower end face of the second conical protrusion 11 aligns with the upper end face of the first conical protrusion 10. Since the mating surfaces of the first conical protrusion 10 and the second conical protrusion 11 are adapted inclined structures, the radial limiting effect of the bottom end of the first conical protrusion 10 on the limiting clip 503 is released at this time, the elastic engagement between the limiting clip 503 and the first conical protrusion 10 on the central column 9 fails, and the fixed relationship between the locking component 5 and the chassis frame 7 is disengaged.

[0043] As the lifting spring 6 continues to reset, the inner cylinder 2 slowly rises along the axial direction of the outer cylinder 1 under the spring's thrust. The top cover 3 moves synchronously with the inner cylinder 2 and gradually moves out of the top of the outer cylinder 1. At this time, the top cover 3 is pulled outward with force, and the locking relationship between the limiting ring 301 on the inner side of the top cover 3 and the top of the inner cylinder 2 is released. The top cover 3 is completely separated from the inner cylinder 2, and the packaging box opening process is completed.

[0044] When closing, the top cover 3 and inner cylinder 2 need to be manually pressed down so that the inner cylinder 2 is retracted into the outer cylinder 1, and the lifting spring 6 is compressed again; at the same time, the limit card 503 slides down along the central column 9 and re-forms an elastic engagement with the first cone protrusion 10, the second cone protrusion 11 falls back to the initial position, the limit ring 301 of the top cover 3 engages with the top of the inner cylinder 2, and the overall structure returns to the initial storage state.

[0045] Throughout the process, the axial sliding sealing between the inner cylinder 2 and the outer cylinder 1, and between the top cover 3 and the outer cylinder 1, can effectively prevent dust and other impurities from entering the box, ensuring the cleanliness of the internal items.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liftable packaging box, comprising an outer cylinder (1) and a base frame (7), characterized in that: The inner wall of the outer cylinder (1) and the outer wall of the inner cylinder (2) form a clearance fit, and the inner cylinder (2) can slide relative to the outer cylinder (1) along the axial direction. The top of the inner cylinder (2) is provided with a top cover (3) that is slidably connected to the outer cylinder (1). The inner side of the top cover (3) is provided with a limiting ring (301) that engages with the inner cylinder (2). The bottom of the inner cylinder (2) is fixedly connected to a base (4) with a through hole (401), and the base (4) is engaged with the lifting spring (6) through a snap-fit ​​piece (5) that passes through the through hole (401). The chassis frame (7) is fixed to the bottom side inside the outer cylinder (1), and a central column (9) that cooperates with the snap-fit ​​part (5) is provided at its center. A truncated cone protrusion (10) is fixedly connected to the top of the central column (9). The upper and lower ends of the lifting spring (6) are respectively engaged with the fixing buckle two (8) on the snap fastener (5) and the chassis frame (7).

2. The adjustable packaging box according to claim 1, characterized in that: The limiting ring (301) of the top cover (3) forms an axial limiting structure with the top of the inner cylinder (2), and the outer wall of the top cover (3) forms a sliding guide structure with the inner wall of the outer cylinder (1).

3. The adjustable packaging box according to claim 1, characterized in that: The snap-fit ​​component (5) is integrally formed by a fixing buckle (501), a disc (502) and a limiting buckle (503). One end of the fixing buckle (501) passes through the through hole (401) and is engaged with the top of the lifting spring (6). One side of the disc (502) is fixed to the upper surface of the base (4). One end of the limiting buckle (503) passes through the base (4) and is elastically engaged with the cone protrusion (10).

4. The adjustable packaging box according to claim 1, characterized in that: The number of through holes (401) is four and they are evenly distributed around the circumference of the base (4). The chassis frame (7) is provided with eight radially evenly distributed fixing buckles (8).

5. A height-adjustable packaging box according to claim 1, characterized in that: The central column (9) is also fitted with a axially movable frustum protrusion 2 (11).

6. The adjustable packaging box according to claim 1, characterized in that: The inner cylinder (2) and the outer cylinder (1), as well as the top cover (3) and the outer cylinder (1), are axially sliding sealed.

7. The adjustable packaging box according to claim 1, characterized in that: The base (4) and the bottom of the inner cylinder (2), and the chassis frame (7) and the bottom of the outer cylinder (1) are all fixedly connected by adhesive bonding.

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