A slide cover structure packaging box

Abstract

The utility model relates to packing box technical field discloses a kind of slide cover structure packing boxes, including box body, the opening of one end of box body, U-shaped sliding portion is formed along the opening of box body, and the opposite two inner sides of sliding portion are provided with sliding groove;The opposite side of sliding cover extends sliding edge, and sliding edge and sliding groove gap cooperate, and the bottom end of sliding edge is rotatably connected with first roller, and the side of sliding edge away from first roller is rotatably connected with second roller;Wherein, the axis of first roller is perpendicular to the axis of second roller, and first roller is rotatably connected with the groove bottom of sliding groove, and second roller is rotatably connected with the side wall of sliding groove;By setting composite rolling structure between sliding cover and box body, more stable, smooth sliding fit is realized;The multi-point contact mode of roller and sliding groove, slide cover can be naturally aligned and keep stable when sliding terminates, avoid the common problem of shaking and loosening in linear friction fit.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, and more specifically, to a sliding cover structure packaging box. Background Technology

[0002] In the packaging industry, sliding-cover boxes are widely used in electronics, cosmetics, and high-end gift boxes due to their ease of operation, smooth opening and closing, and clean overall appearance. With the improvement of consumer experience and the trend towards more refined packaging, sliding covers not only protect the contents but also offer value for display and reuse. For high-end packaging, the smoothness, stability, and structural strength of the sliding cover during opening and closing have become important factors in evaluating quality. Therefore, the market has placed higher demands on the mechanical precision and sliding stability of sliding-cover packaging boxes.

[0003] Most existing sliding-lid packaging boxes use a direct friction sliding fit structure between the lid and the box body. This means sliding is achieved through linear contact between the edge of the lid and the groove in the box body. While this pure friction guiding method is simple in structure and low in manufacturing cost, it is prone to problems such as uneven sliding or loosening in actual use. When the lid experiences uneven force or slight deformation during sliding, the linear friction interface can easily jam, affecting the opening and closing feel. Conversely, widening the fit clearance to reduce resistance can cause the lid to become loose or wobble when closed, affecting overall sealing and user experience. Especially when using cardboard or plastic materials, consistent sliding is difficult to guarantee due to thermal expansion and contraction and accumulated manufacturing tolerances.

[0004] Therefore, there is a need to provide a sliding cover packaging box to solve the problem that existing sliding cover packaging boxes are prone to jamming or shaking. Utility Model Content

[0005] The main objective of this invention is to provide a sliding cover structure packaging box, which aims to solve the technical problems mentioned in the background section.

[0006] The present invention adopts the following technical solution: A sliding cover packaging box, comprising: The box body has an opening at one end, and a U-shaped sliding part is formed along the opening of the box body. Sliding grooves are provided on the two opposite inner sides of the sliding part. A sliding cover, wherein sliding flanges extend from opposite sides of the sliding cover, the sliding flanges are in clearance fit with the sliding groove, a first roller is rotatably connected to the bottom end of the sliding flange, and a second roller is rotatably connected to the side of the sliding flange away from the first roller; The axis of the first roller is perpendicular to the axis of the second roller. The first roller is in rolling connection with the bottom of the sliding groove, and the second roller is in rolling connection with the side wall of the sliding groove.

[0007] Furthermore, the bottom end of the sliding edge is connected to an elastic connecting block, and the first roller includes two roller units arranged opposite to each other, the two roller units being rotatably connected to opposite sides of the elastic connecting block.

[0008] Furthermore, an installation groove is provided on the side of the sliding edge away from the first roller, and a rotating shaft is provided at the bottom of the installation groove. The second roller is rotatably connected to the bottom of the installation groove through the rotating shaft, and the outer periphery of the second roller protrudes from the side of the sliding edge along the thickness direction of the sliding cover.

[0009] Furthermore, the box body is provided with a receiving cavity, the receiving cavity is filled with a protective pad, and the end of the protective pad near the opening of the box body is recessed to form a placement groove. The bottom of the placement groove is provided with a fixing groove, which is adapted to the item to be packaged.

[0010] Furthermore, the sliding cover has a receiving groove on the side facing the protective pad, the receiving groove is aligned with the placement groove, the receiving groove is filled with a cushioning pad, and the surface of the cushioning pad is flush with the surface of the sliding cover.

[0011] Furthermore, the upper surface of the box body is provided with two symmetrical hinge seats, and a rotating pin passes through the two hinge seats. The rotating pin is rotatably connected to an L-shaped latch. The sliding cover is provided with an elastic pin on the end face of the box body facing away from it. When the sliding cover closes the box body, the latch engages with the end face of the sliding cover facing away from the box body, and the latch engages with the elastic pin.

[0012] Furthermore, the latch includes a rotating part and a bending part. The rotating part is rotatably connected to a rotating pin. The bending part is set at an angle to the rotating part, the angle being less than 90°, and the bending part has a slot corresponding to the elastic pin.

[0013] Furthermore, a slot is provided on one end face of the sliding cover facing away from the box body, and an identification nameplate is inserted into the slot and attached to the sliding cover.

[0014] Beneficial effects: This utility model provides a sliding cover packaging box. By setting a composite rolling structure between the sliding cover and the box body, a more stable and smooth sliding fit is achieved. The sliding edges extending from both sides of the sliding cover cooperate with the sliding groove on the inner side of the sliding part of the box body. The first roller is set at the bottom of the sliding edge and forms a rolling support with the bottom of the sliding groove. The second roller is rolledly connected to the side wall of the sliding groove. The axes of the two sets of rollers are perpendicular to each other, so that the frictional forces from the vertical and the side are distributed simultaneously when the cover moves, so that the sliding cover maintains a stable guide during the opening and closing process and will not cause skewing or jamming due to uneven friction. At the same time, the rolling action between the rollers effectively reduces structural wear, making the movement of the sliding cover lighter and smoother. Through the multi-point contact between the rollers and the sliding groove, the sliding cover can naturally align and remain stable when the sliding ends, avoiding the shaking and loosening problems common in linear friction fits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a sliding cover packaging box according to this utility model; Figure 2 This is an exploded view of the sliding cover structure of the present invention. Figure 3 yes Figure 2 Enlarged structural diagram at point A; Figure 4 yes Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the structure of the latch of this utility model; Figure 6 This is a schematic diagram of the combined structure of the box body and the protective pad of this utility model; in: 1. Box body; 110. Sliding part; 120. Sliding groove; 130. Receiving cavity; 140. Hinge seat; 2. Sliding cover; 21. Sliding edge; 22. Mounting groove; 3. First roller; 31. Roller unit; 4. Second roller; 5. Elastic connecting block; 6. Rotating shaft; 7. Protective pad; 71. Placement groove; 72. Fixing groove; 8. Buffer pad; 9. Rotating pin; 10. Lock; 101. Rotating part; 102. Bending part; 11. Elastic pin; 12. Identification plate.

[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0017] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] 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, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Reference Figures 1 to 6 This utility model proposes a sliding cover structure packaging box, comprising: Box 1, with an opening at one end, and a U-shaped sliding part 110 formed along the opening of the box 1, with sliding grooves 120 provided on the two opposite inner sides of the sliding part 110. The sliding cover 2 has sliding edges 21 extending from opposite sides. The sliding edges 21 are in clearance fit with the sliding groove 120. The bottom end of the sliding edge 21 is rotatably connected to a first roller 3, and the side of the sliding edge 21 away from the first roller 3 is rotatably connected to a second roller 4. The axis of the first roller 3 is perpendicular to the axis of the second roller 4. The first roller 3 is in rolling connection with the bottom of the sliding groove 120, and the second roller 4 is in rolling connection with the side wall of the sliding groove 120.

[0022] In the above embodiment, one end face of the box body 1 is open, and a U-shaped sliding portion 110 is formed by extending circumferentially along the edge at the opening. Sliding grooves 120 extending along the length direction are evenly formed on the two opposite inner sidewalls of the sliding portion 110. The groove width is smaller than the thickness of the sliding cover 2 and larger than the thickness of the sliding edge 21, ensuring a clearance fit when the sliding edge 21 is inserted. The sliding cover 2 has a flat structure, flush with the opening of the box body 1, and sliding edges 21 of uniform thickness extend from its opposite sides. The sliding edges 21 are freely inserted into the sliding grooves 120. The bottom end of the sliding edge 21 is rotatably connected to the first roller 3. The axis of the first roller 3 is perpendicular to the sliding direction, and its diameter is adapted to the groove depth to fit tightly against the bottom surface of the groove, forming a reliable rolling support. It mainly bears the weight of the sliding cover 2 and the vertical load, converting friction into low-resistance rolling motion. At the same time, the side of the sliding edge 21 closest to the sliding opening (the side away from the first roller 3) is connected to the second roller 4 via another rotating shaft 6. Its axis is perpendicular to the first roller 3, and its periphery is smooth to make tight rolling contact with the inner wall of the sliding groove 120, providing lateral constraint force.

[0023] The structure of the composite rollers realizes a collaborative mechanism of vertical arrangement of two axes, which reduces vertical drag of the first roller 3 and ensures that the sliding cover 2 is smoothly raised and lowered when pushed and pulled; the second roller 4 provides auxiliary guidance for lateral torque and shares the multidimensional friction load, avoiding deviation or jamming caused by uneven local stress, thereby achieving smooth guidance and stable positioning throughout the entire stroke.

[0024] In one embodiment, the bottom end of the sliding edge 21 is connected to an elastic connecting block 5, and the first roller 3 includes two roller units 31 arranged opposite to each other, the two roller units 31 being rotatably connected to opposite sides of the elastic connecting block 5.

[0025] In the above embodiment, the bottom end of the sliding flange 21 is connected to the elastic connecting block 5 by a flexible material, which has a moderate compression deformation capability. Its opposite sides are rotatably connected to two oppositely arranged roller units 31 by an embedded rotating shaft 6. Each roller unit 31 has the same diameter and a smooth periphery, forming a composite structure of the first roller 3. The double unit combined with the elastic connecting block 5 allows the elastic block to absorb the impact when the sliding cover 2 encounters slight vibration or unevenness during the pushing and pulling process, avoiding stress concentration under rigid connection. At the same time, the two roller units 31 are distributed in parallel on the bottom surface of the sliding groove 120, sharing the vertical load and realizing dual-point support, ensuring the parallelism and stability of the rolling trajectory, preventing tilting or jumping caused by single-point contact, so that the sliding cover 2 maintains uniform force and smooth guidance throughout the entire stroke.

[0026] In one example, the sliding edge 21 has a mounting groove 22 on the side away from the first roller 3. A rotating shaft 6 is provided at the bottom of the mounting groove 22. The second roller 4 is rotatably connected to the bottom of the mounting groove 22 through the rotating shaft 6, and the outer periphery of the second roller 4 protrudes from the side of the sliding edge 21 along the thickness direction of the sliding cover 2.

[0027] In the above embodiment, a rectangular mounting groove 22 is formed on the side of the sliding edge 21 near the sliding opening. The mounting groove 22 is adapted to the volume of the second roller 4. An integral rotating shaft 6 is fixed at the bottom of the groove. The rotating shaft 6 is a metal or high-strength plastic column. The second roller 4 is rotatably connected to the end of the rotating shaft 6 via a bearing or a direct shaft hole. Its outer periphery protrudes slightly from the side of the sliding edge 21 along the thickness direction of the sliding cover 2, forming a protrusion of about 0.5mm to ensure reliable rolling contact with the side wall of the sliding groove 120 and to prevent the rotating shaft 6 from shifting. At the same time, the protruding periphery directly fits the side wall surface, converting lateral friction into rolling motion. Combined with the sliding friction of the sliding edge 21 and the vertical support of the first roller 3, a multi-dimensional mechanical balance is formed to prevent the sliding cover 2 from shifting laterally or getting stuck under bending deformation or external interference. This enables repeated opening and closing in precision packaging scenarios, ensuring structural stability and smooth movement.

[0028] In one embodiment, the box body 1 is provided with a receiving cavity 130, the receiving cavity 130 is filled with a protective pad 7, the protective pad 7 is recessed at one end near the opening of the box body 1 to form a placement groove 71, and a fixing groove 72 is provided at the bottom of the placement groove 71, the fixing groove 72 is adapted to the item to be packaged.

[0029] In the above embodiment, the cavity inside the box 1 forms a receiving cavity 130, which is uniformly filled with a protective pad 7. The protective pad 7 is made of low-density polyurethane foam or EVA material, which has good cushioning and shock absorption performance. The end face of the pad 7 near the opening of the box 1 is recessed to form a placement groove 71 through hot pressing or die cutting process. Its size matches the item to be placed and taken out. A fixing groove 72 is further opened at the bottom of the groove. The fixing groove 72 is a snap-fit ​​concave-convex structure that adapts to the bottom or protruding features of the item. The multi-level groove structure fully wraps the item and provides all-round cushioning. The placement groove 71 guides the item into place to prevent slippage, while the fixing groove 72 generates friction locking force through surface interlocking. Together, they suppress displacement and collision under transportation vibration, ensuring that the item maintains a stable posture when the sliding cover 2 is opened and closed or when there is an external impact, avoiding scratches or damage, thereby achieving reliable protection and convenient handling of the packaging.

[0030] In one embodiment, the sliding cover 2 has a receiving groove on the side facing the protective pad 7, the receiving groove is aligned with the placement groove 71, the receiving groove is filled with a buffer pad 8, and the surface of the buffer pad 8 is flush with the surface of the sliding cover 2.

[0031] In the above embodiment, the inner side of the sliding cover 2 is provided with a receiving groove. The depth of the receiving groove is precisely matched with the thickness of the buffer pad 8 and is vertically aligned with the placement groove 71 in the box body 1 to form an upper and lower clamping channel. The inside is filled with a buffer pad 8 made of low-density foam or silicone. Its soft surface provides uniform pressure distribution and the surface is flat and polished to be flush with the outer surface of the sliding cover 2, avoiding any external interference caused by unevenness. The aligned filling structure ensures that when the sliding cover 2 is closed, the buffer pad 8 is directly pressed into the placement groove 71 of the protective pad 7, forming a double-layer flexible wrapping to absorb the multi-directional impact force of the item during transportation. At the same time, the flush surface maintains the overall flat appearance of the cover and prevents the sliding cover 2 from being restricted when sliding in and out.

[0032] In one embodiment, the upper end face of the box body 1 is provided with two symmetrical hinge seats 140, and a rotating pin 9 is passed between the two hinge seats 140. The rotating pin 9 is rotatably connected to an L-shaped latch 10. The sliding cover 2 is provided with an elastic pin 11 on the end face opposite to the box body 1. When the sliding cover 2 closes the box body 1, the latch 10 latches the end face of the sliding cover 2 opposite to the box body 1, and the latch 10 is engaged with the elastic pin 11.

[0033] In the above embodiment, two integrally formed or fixedly installed hinge seats 140 are symmetrically arranged on the upper end face of the box body 1. The two hinge seats 140 form a U-shaped opening to accommodate the rotating pin 9. The rotating pin 9 is a stainless steel cylinder that passes through the two seats to form a stable pivot. The right-angle bent part of the L-shaped latch 10 is rotatably connected between the seats through the pin. Its long arm extends to cover the end face of the box body 1. The surface of the sliding cover 2 is equipped with an elastic pin 11. The elastic pin 11 is bent from an elastic metal or plastic elastomer. When the cover is closed, the long arm of the latch 10 engages with the back end face of the cover and hooks with the front end of the pin to generate a biting force to provide pre-tension force to prevent the sliding cover 2 from loosening. At the same time, the L-shaped design allows manual lifting of the short arm to unlock, realizing quick opening and closing operation, which significantly improves the safety and sealing of the packaging and user convenience.

[0034] In one embodiment, the latch 10 includes a rotating part 101 and a bending part 102. The rotating part 101 is rotatably connected to the rotating pin 9. The bending part 102 is set at an angle to the rotating part 101, the angle being less than 90°, and the bending part 102 has a slot corresponding to the elastic pin 11.

[0035] In the above embodiments, the L-shaped latch 10 is integrally injection molded from metal or high-strength ABS plastic, including a vertically rotating part 101 and an inclined bending part 102. The included angle between the two is controlled at an acute angle to enhance the fastening force, and it can automatically press the elastic pin 11 during the fastening of the sliding cover 2, so that the elastic pin 11 can press against the slot. In the L-shaped latch 10, the hollow shaft hole of the rotating part 101 is fitted with a rotating pin 9 to achieve free rotation. The front end of the bending part 102 has a rectangular slot along the thickness direction. Its inner wall is smooth and its width is slightly larger than the diameter of the elastic pin 11 to form a tight fit. The acute angle distribution structure of the latch 10, combined with the slot configuration, ensures that the bending part 102 smoothly inserts into the pin during rotation, generating a geometric self-locking effect to prevent vibration from unlocking. At the same time, the rotating part 101 acts as a torque arm to amplify the manual operation torque and reduce the opening resistance. The overall structure balances the locking strength and flexibility.

[0036] In one embodiment, a slot is provided on one end face of the sliding cover 2 facing away from the box body 1, and an identification nameplate 12 is inserted into the slot and the identification nameplate 12 is attached to the sliding cover 2.

[0037] In the above embodiment, the back end face of the sliding cover 2 is milled to create a slot with a slightly tapered wall for insertion. A metal or transparent plastic nameplate 12 is inserted into the slot, and its thin sheet-like body is precisely fitted to the depth of the slot and fixed to the back surface of the cover by friction or slight snapping, forming a seamless exposed marking area. This embedded and fitted design allows the nameplate to withstand the stress of opening and closing the cover without falling off. At the same time, the tapered groove guides the nameplate to be inserted straight. The surface of the nameplate can be printed with serial numbers or brand information, providing a permanent visual mark and improving product traceability and brand recognition.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A sliding cover packaging box, characterized in that, include: Box body (1), one end of the box body (1) is open, and a U-shaped sliding part (110) is formed along the opening of the box body (1), and sliding grooves (120) are provided on the two opposite inner sides of the sliding part (110). A sliding cover (2) has sliding edges (21) extending on opposite sides. The sliding edges (21) are in clearance fit with the sliding groove (120). The bottom end of the sliding edge (21) is rotatably connected to a first roller (3), and the side of the sliding edge (21) away from the first roller (3) is rotatably connected to a second roller (4). The axis of the first roller (3) is perpendicular to the axis of the second roller (4), the first roller (3) is in rolling connection with the bottom of the sliding groove (120), and the second roller (4) is in rolling connection with the side wall of the sliding groove (120).

2. The sliding cover structure packaging box according to claim 1, characterized in that, The bottom end of the sliding edge (21) is connected to an elastic connecting block (5). The first roller (3) includes two roller units (31) arranged opposite to each other. The two roller units (31) are rotatably connected to the opposite sides of the elastic connecting block (5).

3. A sliding cover structure packaging box according to claim 1, characterized in that, The sliding edge (21) has an installation groove (22) on the side away from the first roller (3). The bottom of the installation groove (22) is provided with a rotating shaft (6). The second roller (4) is rotatably connected to the bottom of the installation groove (22) through the rotating shaft (6). The outer periphery of the second roller (4) protrudes from the side of the sliding edge (21) along the thickness direction of the sliding cover (2).

4. A sliding cover structure packaging box according to claim 1, characterized in that, The box body (1) is provided with a receiving cavity (130), and the receiving cavity (130) is filled with a protective pad (7). The protective pad (7) has a recessed placement groove (71) at one end near the opening of the box body (1). A fixing groove (72) is provided at the bottom of the placement groove (71). The fixing groove (72) is adapted to the item to be packaged.

5. A sliding cover structure packaging box according to claim 4, characterized in that, The sliding cover (2) has a receiving groove on the side facing the protective pad (7), the receiving groove is aligned with the placement groove (71), the receiving groove is filled with a buffer pad (8), and the surface of the buffer pad (8) is flush with the surface of the sliding cover (2).

6. A sliding cover packaging box according to claim 1, characterized in that, The upper surface of the box body (1) is provided with two symmetrical hinge seats (140), and a rotating pin (9) is provided between the two hinge seats (140). The rotating pin (9) is rotatably connected to an L-shaped latch (10). The sliding cover (2) is provided with an elastic pin (11) on the end face away from the box body (1). When the sliding cover (2) covers the box body (1), the latch (10) latches the end face away from the box body (1) of the sliding cover (2), and the latch (10) engages with the elastic pin (11).

7. A sliding cover structure packaging box according to claim 6, characterized in that, The latch (10) includes a rotating part (101) and a bent part (102). The rotating part (101) is rotatably connected to the rotating pin (9). The bent part (102) is set at an angle to the rotating part (101), the angle being less than 90°, and the bent part (102) has a slot corresponding to the elastic pin (11).

8. A sliding cover packaging box according to claim 1, characterized in that, The sliding cover (2) has a slot on one end face away from the box body (1), and a nameplate (12) is inserted into the slot. The nameplate (12) is attached to the sliding cover (2).

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