Expandable plastic packaging box

Abstract

The utility model discloses an extensible plastic packaging box, which belongs to the field of packaging boxes and comprises a box body, a storage groove is arranged at the top end of the side wall of the box body, a supplement frame is slidably mounted in the storage groove, a scale strip is arranged on one side of the supplement frame, a fixing component is arranged between the supplement frame and the box body, and a top cover is arranged at the top end of the supplement frame. A groove matched with the supplement frame is formed in the bottom end of the top cover, a sealing gasket is arranged on the inner wall of the groove, and the two sides of the box body are each fixedly provided with two symmetrically-distributed handles; and two symmetrically distributed mounting blocks are fixedly mounted on each of the two sides of the box body. The box body and the supplement frame are matched, the supplement frame slides in the containing groove formed in the top of the box body, the effect of adjusting the internal volume of the product can be achieved, articles of different sizes can be conveniently placed in the product, the supplement frame is fixed through the fixing assembly, and the stability between the supplement frame and the box body can be kept.

Description

Technical Field

[0001] The utility model relates to the field of packaging boxes, and more particularly to an expandable plastic packaging box. Background Art

[0002] Plastic packaging boxes, as the name suggests, are boxes made primarily of plastic, primarily used for packaging objects. They enhance user experience, are durable, moisture-proof, waterproof, tough, and safe for transportation, enhancing product quality.

[0003] Patent application number 202320122444.7 discloses a plastic packaging box, comprising a plastic packaging box as a whole, the plastic packaging box as a whole is provided with a box body and a box lid, the interior of the box body is provided with a support structure, the support structure includes a horizontal support plate, a first vertical support plate and a second vertical support plate, the interior of the box body is provided with a partition structure, the partition structure includes a partition plate, a slider, a ball, a slide, a card block and a slot, the front and rear ends of the partition plate are symmetrically connected with sliders, and the interior of the box body is provided with slides on both the front and rear sides. The utility model is provided with a support structure and a partition structure inside the box body respectively, the support structure has the function of supporting the bottom and the four sides of the box body, thereby enhancing the strength, hardness and anti-deformation ability of the box body, making the box body of better quality and longer life, and the partition structure can be used according to the needs of the user using a partition plate that is easy to install and disassemble to divide the internal space of the box body, which is flexible and can meet the needs of the user.

[0004] In response to the above-mentioned related technologies, the device is equipped with a supporting structure and a partition structure inside the box body to achieve the effect of supporting the box body and facilitate the planning of the internal space of the box body. However, the internal space of the box body is fixed and cannot be expanded. It is not enough to place some taller items, which reduces the scope of use of the product. Utility Model Content

[0005] In order to solve the above problems, the present invention provides an expandable plastic packaging box, which adopts the following technical solutions:

[0006] An expandable plastic packaging box comprises a box body, a storage slot is defined at the top of a side wall of the box body, a supplementary frame is slidably mounted in the storage slot, a scale bar is defined on one side of the supplementary frame, a fixing assembly is provided between the supplementary frame and the box body, a top cover is defined at the top of the supplementary frame, a groove is defined at the bottom of the top cover that matches the supplementary frame, a sealing gasket is defined on the inner wall of the groove, and two symmetrically distributed handles are fixedly mounted on both sides of the box body;

[0007] Two symmetrically distributed mounting blocks are fixedly installed on both sides of the box body, and a plurality of stabilizing blocks distributed in a linear array are provided on the top of the two mounting blocks. Insert blocks are fixedly installed on the bottom of the stabilizing blocks, and slots matching the insert blocks on the same side are provided on the top of the two mounting blocks. Movable grooves are provided on the inner walls on both sides of the slots, and positioning components are provided in the movable grooves.

[0008] By adopting the above technical solution, when the product is used, the supplementary frame slides in the storage slot to adjust the distance between the supplementary frame and the box body, and then adjusts the internal volume of the product, which is convenient for the device to store items of different sizes, which is beneficial to improving the use range of the device. The side wall of the supplementary frame is provided with a scale bar, which is convenient for users to check the height of the supplementary frame. When the distance between the supplementary frame and the box body is adjusted, the box body and the supplementary frame can be locked by the fixing component. When the items are placed, the user places the top cover above the supplementary frame so that the groove at the bottom of the top cover is engaged with the top of the supplementary frame, which can seal the product.

[0009] When the height adjustment of the supplementary frame is completed, the user places the plug-in block installed at the bottom of the stabilizing block into the slot opened at the top of the installation block. The stabilizing block can be assembled by engaging the plug-in block and the slot. The inner side of the stabilizing block fits with the outer side of the supplementary frame. The setting of multiple stabilizing blocks can protect the supplementary frame, which is beneficial to improving the bearing capacity inside the supplementary frame. A positioning component is provided between the plug-in block and the slot to position the stabilizing plug-in block, which is beneficial to improving the stability of the placement of the stabilizing block.

[0010] Furthermore, the fixing assembly includes screw sleeves fixedly installed on both sides of the box body, and bolts are provided in the two screw sleeves. The ends of the two bolts pass through the storage groove and contact the side opposite to the supplementary frame. A second spring distributed in a linear array is fixedly installed between the bottom end of the supplementary frame and the inner wall of the bottom end of the storage groove.

[0011] By adopting the above technical solution, the second spring is set between the supplementary frame and the storage groove to support the supplementary frame. The supplementary frame can slide in the storage groove under the elastic force of the second spring, which is convenient for users to adjust the height of the supplementary frame. When the height adjustment of the supplementary frame is completed, the bolt is rotated in the threaded sleeve on the same side, so that the ends of the two bolts contact the opposite side of the supplementary frame, and the tightening force generated by the bolts can fix the supplementary frame.

[0012] Furthermore, two symmetrically distributed limit blocks are fixedly mounted on the outer wall and the inner wall of the bottom end of the supplementary frame, and the inner wall of the storage slot is provided with a limit slot that matches the limit block on the same side.

[0013] By adopting the above technical solution, when the supplementary frame slides in the storage slot, the supplementary frame slides in the limit slot on the same side with the limit block. The cooperation between the limit block and the limit slot is conducive to maintaining the stability of the supplementary frame's lifting and lowering, and helps to prevent the supplementary frame from leaving the storage slot.

[0014] Furthermore, the positioning assembly includes a positioning rod slidably installed in the movable groove, and a first spring is fixedly connected between the end of the positioning rod away from the plug block in the same group and the inner wall on the side opposite to the movable groove on the same side, and positioning grooves matching the positioning rod on the same side are provided on both sides of the plug block.

[0015] By adopting the above technical solution, when the insert block slides into the slot, the insert block pushes the two positioning rods in the same group to slide into the movable slot on the same side, and the positioning rods push the first spring on the same side to contract. When the insert block and the slot are completely engaged, the positioning rods return to their original positions under the elastic force of the first spring on the same side, and the ends of the positioning rods engage with the positioning slots provided on the side walls of the insert block in the same group, thereby positioning and stabilizing the insert block, which is beneficial to maintaining the stability of the placement of the stabilizing block.

[0016] Furthermore, two symmetrically distributed sliding blocks are fixedly mounted on the side wall of the positioning rod away from the inserting block, and the inner wall of the movable groove is provided with a sliding groove matching the sliding block on the same side.

[0017] By adopting the above technical solution, when the positioning rod is located in the movable groove and slides, the positioning rod slides with the slider in the sliding groove on the same side. The cooperation between the slider and the sliding groove is conducive to maintaining the sliding stability of the positioning rod and helps to prevent the positioning rod from leaving the movable groove on the same side.

[0018] Furthermore, a protective frame is provided on the side wall of the lower section of the box body, and a plurality of shock-absorbing pads distributed in a linear array are fixedly mounted on the bottom end of the protective frame.

[0019] By adopting the above technical solution, the setting of the protective frame on the outside of the box body helps to prevent foreign objects from directly hitting the side wall of the box body, thereby achieving the effect of protecting the box body, and a shock-absorbing pad is provided at the bottom of the protective frame to play a shock-absorbing and protective role.

[0020] In summary, the present invention has the following beneficial technical effects:

[0021] (1) In the present invention, by cooperating with the box body and the supplementary frame, the supplementary frame slides in the storage groove opened at the top of the box body, thereby adjusting the internal volume of the product, making it convenient for the product to place items of different sizes, and fixing the supplementary frame by the fixing component is conducive to maintaining the stability between the supplementary frame and the box body.

[0022] (2) In the present invention, the cooperation between the mounting block and the stabilizing block plays a role in protecting the side wall of the supplementary frame and is conducive to improving the bearing capacity of the supplementary frame. The stabilizing block is engaged with the slot opened at the top of the mounting block through the plug-in block installed at the bottom, and is then fixed by the positioning assembly, which is convenient for staff to disassemble.

[0023] (3) In the present invention, the outer side of the box body plays a role in protecting the box body through the setting of a protective frame, which is beneficial to reducing the damage to the box body caused by impact of foreign objects, and the bottom of the protective frame plays a role in shock absorption and protection through the setting of a shock-absorbing pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of the utility model;

[0025] Figure 2 It is a cross-sectional view of the mounting block in the present utility model;

[0026] Figure 3 For this utility model Figure 2 A magnified view of middle A;

[0027] Figure 4 It is a cross-sectional view of the utility model;

[0028] Figure 5 For this utility model Figure 4 Enlarged view of middle B;

[0029] Figure 6 This is an expanded view of the fixing assembly in the present utility model;

[0030] Figure 7 This is an expanded view of the positioning component in the present utility model.

[0031] Description of the numbers in the figure:

[0032] 1. Protective frame; 2. Bolt; 3. Screw sleeve; 4. Box body; 5. Supplementary frame; 6. Top cover; 7. Stabilizing block; 8. Mounting block; 9. Insert block; 10. Slot; 11. Positioning rod; 12. First spring; 13. Movable slot; 14. Storage slot; 15. Second spring; 16. Limit block. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on 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.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0036] The following is combined with Figure 1-7 The utility model is described in further detail.

[0037] See also Figure 1-7, an expandable plastic packaging box, including a box body 4, a receiving groove 14 is opened at the top of the side wall of the box body 4, a supplementary frame 5 is slidably installed in the receiving groove 14, a scale bar is provided on one side of the supplementary frame 5, and a fixing component is provided between the supplementary frame 5 and the box body 4, the fixing component includes screw sleeves 3 fixedly installed on both sides of the box body 4, bolts 2 are provided in the two screw sleeves 3, the ends of the two bolts 2 are passed through the receiving groove 14 and contact the opposite side of the supplementary frame 5, and a second spring 15 distributed in a linear array is fixedly installed between the bottom end of the supplementary frame 5 and the inner wall of the bottom end of the receiving groove 14, a top cover 6 is provided at the top of the supplementary frame 5, and a groove matching the supplementary frame 5 is opened at the bottom of the top cover 6, and a sealing gasket is provided on the inner wall of the groove, and two symmetrically distributed handles are fixedly installed on both sides of the box body 4. When the product is in use, the supplementary frame 5 slides in the storage groove 14 to adjust the distance between the supplementary frame 5 and the box body 4, and then adjusts the internal volume of the product, which is convenient for the device to store items of different sizes and is beneficial to improving the use range of the device. A scale bar is provided on the side wall of the supplementary frame 5 to facilitate the user to check the height of the supplementary frame 5. The second spring 15 is set between the supplementary frame 5 and the storage groove 14 to support the supplementary frame 5. The supplementary frame 5 can slide in the storage groove 14 under the elastic force of the second spring 15, which is convenient for the user to adjust the height of the supplementary frame 5. When the height adjustment of the supplementary frame 5 is completed, the rotating bolt 2 is located in the nut sleeve 3 on the same side to rotate, so that the ends of the two bolts 2 are in contact with the opposite side of the supplementary frame 5, and the tightening force generated by the bolt 2 is used to fix the supplementary frame 5.

[0038] Two symmetrically distributed limit blocks 16 are fixedly installed on the outer wall and inner wall of the bottom end of the supplementary frame 5. A limit groove matching the limit block 16 on the same side is opened on the inner wall of the storage slot 14. When the supplementary frame 5 slides in the storage slot 14, the supplementary frame 5 slides in the limit groove on the same side with the limit block 16. The cooperation between the limit block 16 and the limit groove is conducive to maintaining the stability of the lifting and lowering of the supplementary frame 5, and helps to prevent the supplementary frame 5 from leaving the storage slot 14.

[0039] Two symmetrically distributed mounting blocks 8 are fixedly installed on both sides of the box body 4. A plurality of stabilizing blocks 7 distributed in a linear array are provided on the top of the two mounting blocks 8. Insertion blocks 9 are fixedly installed on the bottom of the stabilizing blocks 7. Slots 10 matching the insertion blocks 9 on the same side are provided on the top of the two mounting blocks 8. Movable grooves 13 are provided on the inner walls on both sides of the slots 10. Positioning components are provided in the movable grooves 13. The positioning components include a positioning rod 11 slidably installed in the movable groove 13. A first spring 12 is fixedly connected between the inner wall of the side opposite to the movable groove 13 on the same side at one end of the positioning rod 11 away from the insertion blocks 9 of the same group. Positioning grooves matching the positioning rod 11 on the same side are provided on both sides of the insertion blocks 9.

[0040] When the height adjustment of the supplementary frame 5 is completed, the user places the plug block 9 installed at the bottom of the stabilizing block 7 into the slot 10 opened at the top of the installation block 8. The plug block 9 and the slot 10 are engaged with each other, which can play the role of assembling the stabilizing block 7. The inner side of the stabilizing block 7 is fitted with the outer side of the supplementary frame 5. The setting of multiple stabilizing blocks 7 plays the role of protecting the supplementary frame 5, which is beneficial to improving the bearing capacity inside the supplementary frame 5. When the plug block 9 slides into the slot 10, the plug block 9 pushes the two positioning rods 11 of the same group to slide into the movable groove 13 on the same side, and the positioning rod 11 pushes the first spring 12 on the same side to contract. When the plug block 9 and the slot 10 are completely engaged, the positioning rod 11 returns to its original position under the elastic force of the first spring 12 on the same side, and the end of the positioning rod 11 is engaged with the positioning groove opened on the side wall of the plug block 9 of the same group, which plays the role of positioning the stabilizing plug block 9, which is beneficial to maintaining the stability of the placement of the stabilizing block 7.

[0041] Two symmetrically distributed sliders are fixedly installed on the side wall of the positioning rod 11 away from the insertion block 9, and a sliding groove matching the slider on the same side is opened on the inner wall of the movable groove 13. When the positioning rod 11 is located in the movable groove 13 and slides, the positioning rod 11 slides in the sliding groove on the same side with the slider. The cooperation between the slider and the sliding groove is conducive to maintaining the sliding stability of the positioning rod 11 and helps to prevent the positioning rod 11 from falling out of the movable groove 13 on the same side.

[0042] A protective frame 1 is provided on the side wall of the lower section of the box body 4, and a plurality of shock-absorbing pads distributed in a linear array are fixedly installed on the bottom end of the protective frame 1. The setting of the protective frame 1 on the outside of the box body 4 helps to prevent foreign objects from directly hitting the side wall of the box body 4, thereby achieving the effect of protecting the box body 4, and a shock-absorbing pad is provided at the bottom of the protective frame 1 to play a role in shock absorption and protection.

[0043] The implementation principle of the embodiment of the present utility model is: when the product is in use, the supplementary frame 5 slides in the storage groove 14 to adjust the distance between the supplementary frame 5 and the box body 4, and then adjusts the internal volume of the product, which is convenient for the device to store items of different sizes, which is beneficial to improving the use range of the device. The side wall of the supplementary frame 5 is provided with a scale bar, which is convenient for the user to check the height of the supplementary frame 5. When the distance between the supplementary frame 5 and the box body 4 is adjusted, the box body 4 and the supplementary frame 5 can be locked by the fixing component. When the items are placed, the user places the top cover 6 above the supplementary frame 5 so that the groove opened at the bottom end of the top cover 6 is engaged with the top end of the supplementary frame 5, which can play the role of sealing the product.

[0044] When the height adjustment of the supplementary frame 5 is completed, the user places the plug-in block 9 installed at the bottom of the stabilizing block 7 into the slot 10 opened at the top of the installation block 8. The stabilizing block 7 can be assembled by engaging the plug-in block 9 and the slot 10. The inner side of the stabilizing block 7 fits with the outer side of the supplementary frame 5. The setting of multiple stabilizing blocks 7 can protect the supplementary frame 5, which is beneficial to improving the bearing capacity inside the supplementary frame 5. A positioning component is provided between the plug-in block 9 and the slot 10 to position the stabilizing plug-in block 9, which is beneficial to improving the stability of the placement of the stabilizing block 7.

[0045] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An expandable plastic packaging box, comprising a box body (4), characterized in that: The top of the side wall of the box body (4) is provided with a receiving groove (14), a supplementary frame (5) is slidably installed in the receiving groove (14), a scale bar is provided on one side of the supplementary frame (5), a fixing component is provided between the supplementary frame (5) and the box body (4), a top cover (6) is provided on the top of the supplementary frame (5), a groove matching the supplementary frame (5) is provided on the bottom of the top cover (6), a sealing gasket is provided on the inner wall of the groove, and two handles symmetrically distributed are fixedly installed on both sides of the box body (4); Two symmetrically distributed mounting blocks (8) are fixedly mounted on both sides of the box body (4); a plurality of stabilizing blocks (7) distributed in a linear array are provided on the top of the two mounting blocks (8); an inserting block (9) is fixedly mounted on the bottom of the stabilizing block (7); a slot (10) matching the inserting block (9) on the same side is provided on the top of the two mounting blocks (8); movable grooves (13) are provided on the inner walls on both sides of the slots (10); and positioning components are provided in the movable grooves (13).

2. The expandable plastic packaging box according to claim 1, characterized in that: The fixing assembly comprises screw sleeves (3) fixedly mounted on both sides of the box body (4), bolts (2) are provided in the two screw sleeves (3), the ends of the two bolts (2) are passed through the receiving groove (14) and contact the side opposite to the supplementary frame (5), and second springs (15) distributed in a linear array are fixedly mounted between the bottom end of the supplementary frame (5) and the inner wall of the bottom end of the receiving groove (14).

3. The expandable plastic packaging box according to claim 1, characterized in that: Two symmetrically distributed limiting blocks (16) are fixedly mounted on the outer wall and the inner wall of the bottom end of the supplementary frame (5), and a limiting groove matching the limiting block (16) on the same side is opened on the inner wall of the receiving slot (14).

4. The expandable plastic packaging box according to claim 1, characterized in that: The positioning assembly includes a positioning rod (11) slidably installed in a movable groove (13), and a first spring (12) is fixedly connected between the inner wall of the side opposite to the movable groove (13) on the same side and the end of the positioning rod (11) away from the same group of the plug block (9), and positioning grooves matching the positioning rod (11) on the same side are opened on both sides of the plug block (9).

5. The expandable plastic packaging box according to claim 4, characterized in that: Two symmetrically distributed sliding blocks are fixedly mounted on the side wall of the positioning rod (11) away from the insert block (9), and the inner wall of the movable groove (13) is provided with a sliding groove matching the sliding block on the same side.

6. The expandable plastic packaging box according to claim 1, characterized in that: The side wall of the lower section of the box body (4) is sleeved with a protective frame (1), and a plurality of shock-absorbing pads distributed in a linear array are fixedly mounted on the bottom end of the protective frame (1).

Images