Raw tobacco leaf circulation box capable of being conveniently opened and closed through hook-and-loop fasteners

Abstract

The utility model relates to a turnover box, in particular to an original tobacco leaf circulation turnover box which can be opened and closed conveniently and rapidly through hook-and-loop fasteners. Comprising a soft box body frame, transverse folding covers, longitudinal folding covers, hook face hook-and-loop fastener belts, double-rail sliding ways, synchronous sliding blocks and loop face hook-and-loop fastener strips, the transverse folding covers are arranged on the short edges of the two sides of the top and the two sides of the bottom of the soft box body frame, and the longitudinal folding covers are arranged on the long edges of the two sides of the top and the two sides of the bottom of the soft box body frame; the hook face magic tape is arranged on the transverse folding cover, the double-track sliding way is connected to the longitudinal folding cover on the upper portion in the length direction, the synchronous sliding blocks are connected to the two sides of the double-track sliding way, and the loop face magic tape is connected to the two synchronous sliding blocks. According to the turnover box, the fixing strength between the transverse folding cover and the longitudinal folding cover can be flexibly adjusted according to actual needs, and the convenience of opening and closing operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to a turnover box, in particular to a raw tobacco leaf circulation turnover box which adopts Velcro to realize convenient opening and closing. Background Art

[0002] Raw tobacco recycling containers are crucial storage and transportation vehicles in the tobacco industry, primarily used for the centralized transport, temporary storage, and turnover of raw tobacco leaves. As reusable logistics containers, their ease of opening and closing, as well as their structural durability, directly impact operational efficiency and raw material protection. Traditional containers typically utilize a rigid and soft-shell frame with a folding lid, requiring a balanced seal and ease of use during repeated opening and closing. With the growing adoption of green logistics, reusable, tool-free packaging has become a key area of ​​industry advancement.

[0003] Currently, the most common raw tobacco turnover boxes on the market are sealed with tape. Although this method is low-cost, it has obvious shortcomings: First, using tape to seal requires additional tools such as scissors or cutters to open, which increases the operation steps; second, frequent opening and closing will cause tape residue, affecting the appearance and secondary use of the box; third, disposable tape is not environmentally friendly. In addition, some turnover boxes have begun to use Velcro as an alternative, aiming to provide a more convenient opening and closing experience.

[0004] However, the existing Velcro fixing method is difficult to strike a balance between firmness and convenience. On the one hand, the degree of fixation cannot be adjusted, which sometimes results in only temporary fixation and cannot ensure the safety of the goods; on the other hand, if a more secure closure is sought, it may be too tight, making it difficult to open, which is not conducive to quick loading and unloading operations. Utility Model Content

[0005] In order to overcome the shortcomings of the existing Velcro fixing method that the firmness cannot be adjusted and the opening and closing are inconvenient, the technical problem is: to provide a raw tobacco leaf circulation turnover box that uses Velcro to achieve convenient opening and closing and has adjustable fixing strength.

[0006] The technical solution is: a raw tobacco leaf circulation turnover box that uses Velcro to achieve convenient opening and closing, including a soft box frame, a horizontal folding cover, a longitudinal folding cover, a hook-surface Velcro strip, a double-track slide, a synchronous slider and a furry Velcro strip. The short sides of the top and bottom of the soft box frame are provided with the horizontal folding cover, the long sides of the top and bottom of the soft box frame are provided with the longitudinal folding cover, the horizontal folding cover is provided with the hook-surface Velcro strip, the upper longitudinal folding cover is connected to the double-track slide in the length direction, the two sides of the double-track slide are connected to the synchronous slider, the two synchronous sliders are connected to the furry Velcro strip, and the furry Velcro strip is adapted to the hook-surface Velcro strip.

[0007] Furthermore, the soft box frame, the transverse folding cover and the longitudinal folding cover are all made of soft plastic.

[0008] Furthermore, it also includes a transmission base and a linkage push rod. The transmission base is provided in the middle of the double-track slide, and a linear guide hole is provided in the transmission base. The two facing ends of the two synchronous sliders on the same side are connected to the linkage push rod, and the two linkage push rods are located in the linear guide hole.

[0009] Furthermore, it also includes a rotating base, a torque adjustment knob, a driving disk, a spiral guide disk and a follower pin. The rotating base is connected to the transmission base, and the driving disk is rotatably connected inside the rotating base. The torque adjustment knob is provided on one side of the driving disk, and the spiral guide disk is connected to the other side of the driving disk. The two facing sides of the two linked push rods are connected to the follower pins, and the two follower pins are both located in the spiral groove of the spiral guide disk.

[0010] Furthermore, it also includes an axially sliding spline shaft, a spline matching cavity is provided in the middle of the driving disk, the axially sliding spline shaft is slidingly connected in the spline matching cavity, and the axially sliding spline shaft is connected to the torque adjustment knob.

[0011] Furthermore, it also includes a positioning block, the torque adjustment knob is provided with a positioning groove, and the rotating base is provided with the positioning block adapted to the positioning groove.

[0012] Furthermore, a return compression spring is included, and the return compression spring is connected between the torque adjustment knob and the driving disk.

[0013] The beneficial effect is that this turntable not only allows for flexible adjustment of the fixing strength between the horizontal and vertical folding covers according to actual needs, but also significantly improves the convenience of opening and closing operations. The user simply turns the torque adjustment knob to synchronously adjust the position of the loop-shaped Velcro strips on both sides of the synchronous slider, thereby controlling the overlap area with the hook-shaped Velcro strips to achieve the ideal fixing effect. Furthermore, the design of the positioning block, positioning slot, and return spring ensures the stability of the synchronous slider after adjustment, preventing unnecessary movement and improving the safety and reliability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the longitudinal folding cover of the present invention.

[0016] Figure 3 for Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the double-track slide, synchronous slider, fleece-surface Velcro strip and transmission base of the utility model.

[0018] Figure 5 It is a schematic cross-sectional structural diagram of the transmission base of the utility model.

[0019] Figure 6 It is a schematic cross-sectional structural diagram of the positioning assembly of the present utility model.

[0020] Figure 7 This is a schematic diagram of the three-dimensional structure of the torque adjustment knob of the present invention.

[0021] Parts names and serial numbers in the figure: 1_Soft box frame, 2_Horizontal folding cover, 3_Vertical folding cover, 4_Hook-surface Velcro strip, 5_Dual-track slide, 6_Synchronous slider, 7_Fleece-surface Velcro strip, 8_Transmission base, 9_Linkage push rod, 10_Linear guide hole, 11_Rotation base, 13_Spiral guide disk, 14_Follower pin, 121_Torque adjustment knob, 122_Drive disk, 123_Axial sliding spline shaft, 124_Spline matching cavity, 125_Reset compression spring, 126_Location block, 127_Location slot. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0023] A raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing, such as Figure 1-Figure 2As shown, it includes a soft box frame 1, a transverse folding cover 2, a longitudinal folding cover 3, a hook-surface Velcro strip 4, a double-track slide 5, a synchronous slider 6 and a furry Velcro strip 7. The transverse folding cover 2 is provided on the left and right sides of the top and bottom of the soft box frame 1, and the longitudinal folding cover 3 is provided on the front and back sides of the top and bottom of the soft box frame 1. The soft box frame 1, the transverse folding cover 2 and the longitudinal folding cover 3 are all made of soft plastic. Two hook-surface Velcro strips 4 are provided on the transverse folding cover 2, and the top length direction of the upper longitudinal folding cover 3 is embedded with the double-track slide 5, and the left and right sides of the double-track slide 5 are connected to the synchronous slider 6. The two synchronous sliders 6 are connected to the furry Velcro strip 7, and the furry Velcro strip 7 on each synchronous slider 6 is respectively adapted to the hook-surface Velcro strip 4 of the transverse folding covers 2 on the upper two sides.

[0024] like Figures 1-4 As shown, it also includes a transmission base 8 and a linkage push rod 9. The transmission base 8 is connected to the middle part of the double-track slide 5. Two linear guide holes 10 are provided in the transmission base 8. The two facing ends of the two synchronous sliders 6 of the same double-track slide 5 are connected to the linkage push rod 9. The two linkage push rods 9 are respectively located in the two linear guide holes 10.

[0025] First, close the transverse folding covers 2 on the upper and lower sides of the soft box frame 1. Each transverse folding cover 2 is equipped with two hook-surface Velcro strips 4. Then, place the longitudinal folding cover 3 over the already closed transverse folding covers 2. The top of the longitudinal folding cover 3 is embedded with a dual-track slide 5 along its length. This dual-track slide 5 is designed to accommodate frequent opening and closing of the top. Synchronous sliders 6 are connected to the left and right sides of the dual-track slide 5, each of which is connected to a fleece-surface Velcro strip 7. These fleece-surface Velcro strips 7 are respectively adapted to the hook-surface Velcro strips 4 on the upper two transverse folding covers 2. By sliding the synchronous slider 6 left and right, the linear guide holes 10 guide the linkage push rod 9, allowing the position of the fleece-surface Velcro strip 7 to be adjusted, thereby controlling the size of the overlap between the fleece-surface Velcro strip 7 and the hook-surface Velcro strip 4. This method allows the user to adjust the degree of fixation of the transverse folding cover 2 and the longitudinal folding cover 3 according to actual needs. When a looser fixation is required, the overlapping area between the fleece-surface Velcro strip 7 and the hook-surface Velcro tape 4 is reduced; otherwise, the overlapping area between them is increased to achieve a more secure closure.

[0026] Example 2, based on Example 1, Figure 5 and Figure 6As shown, in order to facilitate the adjustment of the synchronous movement of the synchronous sliders 6 on both sides, the original tobacco leaf circulation turnover box further includes a rotating base 11, a torque adjustment knob 121, a drive disk 122, a spiral guide disk 13 and a follower pin 14. The rotating base 11 is embedded in the transmission base 8, and the driving disk 122 is rotatably connected to the side of the rotating base 11 close to the linkage push rod 9. The torque adjustment knob 121 is provided on the side of the driving disk 122 away from the linkage push rod 9. The spiral guide disk 13 is connected to the side of the driving disk 122 close to the linkage push rod 9, and the follower pin 14 is connected to the opposite side of the two linkage push rods 9. Both follower pins 14 are located in the spiral groove of the spiral guide disk 13.

[0027] like Figure 6 As shown, it also includes an axial sliding spline shaft 123, a spline matching cavity 124 is provided in the middle of the driving disk 122, and the axial sliding spline shaft 123 is slidingly connected in the spline matching cavity 124, and the axial sliding spline shaft 123 is connected to the torque adjustment knob 121.

[0028] During adjustment, the torque adjustment knob 121 is rotated, and the torque adjustment knob 121 drives the driving disk 122 to rotate through the axial sliding spline shaft 123 and the spline matching cavity 124. The rotation of the driving disk 122 drives the spiral guide disk 13 to rotate, and the rotation of the spiral guide disk 13 drives the follower pins 14 on the linkage push rods 9 on both sides to move toward or away from each other. In this way, only the torque adjustment knob 121 needs to be rotated to synchronously adjust the movement of the synchronous sliders 6 on both sides, which is convenient for adjustment.

[0029] Example 3, based on Example 2, Figure 6-Figure 7 As shown, in order to ensure that the synchronous slider 6 will not move at will after being adjusted, the original tobacco leaf circulation turnover box further includes the positioning block 126, the positioning groove 127 and the reset compression spring 125, and the positioning grooves 127 are evenly spaced circumferentially on the top of the torque adjustment knob 121, and the positioning blocks 126 adapted to the positioning grooves 127 are circumferentially spaced on the inner side of the top of the rotating base 11, and the reset compression spring 125 is connected between the torque adjustment knob 121 and the drive disk 122.

[0030] Initially, the return compression spring 125 is in a normal state, and the positioning block 126 is stuck in the positioning groove 127. When the torque adjusting knob 121 needs to be rotated, the torque adjusting knob 121 is pressed toward the driving disk 122, and the return compression spring 125 is compressed. After the positioning groove 127 is disengaged from the positioning block 126, the torque adjusting knob 121 can be rotated, and the torque adjusting knob 121 drives the driving disk 122 to rotate, thereby adjusting the position of the synchronous slider 6. After adjustment, the torque adjusting knob 121 is released, and the torque adjusting knob 121 is reset under the action of the return compression spring 125, and the positioning groove 127 is re-matched with the positioning block 126 to fix the torque adjusting knob 121.

[0031] While the present invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing, comprising a soft box frame (1), a transverse folding cover (2) and a longitudinal folding cover (3), wherein the transverse folding cover (2) is provided on both short sides of the top and bottom of the soft box frame (1), and the longitudinal folding cover (3) is provided on both long sides of the top and bottom of the soft box frame (1), characterized in that: It also includes a hook-surface Velcro tape (4), a double-track slide (5), a synchronous slider (6) and a fleece-surface Velcro strip (7), wherein the hook-surface Velcro tape (4) is provided on the transverse folding cover (2), and the longitudinal folding cover (3) above is connected to the double-track slide (5) in the length direction, and both sides of the double-track slide (5) are connected to the synchronous slider (6), and both synchronous sliders (6) are connected to the fleece-surface Velcro strip (7), and the fleece-surface Velcro strip (7) is adapted to the hook-surface Velcro tape (4); It also includes a transmission base (8) and a linkage push rod (9), wherein the transmission base (8) is provided in the middle of the double-track slideway (5), a linear guide hole (10) is provided in the transmission base (8), and the two synchronous sliders (6) on the same side are connected to the linkage push rod (9) at one end facing each other, and the two linkage push rods (9) are located in the linear guide hole (10); The invention also includes a rotating base (11), a torque adjustment knob (121), a driving disk (122), a spiral guide disk (13) and a follower pin (14), wherein the transmission base (8) is connected to the rotating base (11), the driving disk (122) is rotatably connected inside the rotating base (11), one side of the driving disk (122) is provided with the torque adjustment knob (121), and the other side of the driving disk (122) is connected to the spiral guide disk (13), and the two facing sides of the two linkage push rods (9) are both connected to the follower pin (14), and the two follower pins (14) are both located in the spiral groove of the spiral guide disk (13).

2. The raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing according to claim 1, characterized in that: The soft box frame (1), the transverse folding cover (2) and the longitudinal folding cover (3) are all made of soft plastic.

3. The raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing according to claim 2, characterized in that: It also includes an axial sliding spline shaft (123), a spline fitting cavity (124) is provided in the middle of the driving disc (122), the axial sliding spline shaft (123) is slidably connected in the spline fitting cavity (124), and the axial sliding spline shaft (123) is connected to the torque adjustment knob (121).

4. The raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing according to claim 3 is characterized in that: It also includes a positioning block (126), a positioning groove (127) is provided on the torque adjustment knob (121), and the rotating base (11) is provided with the positioning block (126) adapted to the positioning groove (127).

5. The raw tobacco leaf circulation box that uses Velcro to achieve convenient opening and closing according to claim 4, characterized in that: It also includes a return compression spring (125), which is connected between the torque adjustment knob (121) and the drive disk (122).

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