Packaging box with leakage-proof sealing function and safety lock function

Abstract

The utility model relates to a packing box with leak-proof sealing and safety lock functions, which is characterized by comprising an outer cover, an unlocking cover body, a locking cover body, a threaded box body, a box body base and a bottom shell, the unlocking cover body is fixed in the outer cover so that the unlocking cover body and the box body base cannot rotate relatively, and the box body base is fixed in the bottom shell so that the box body base and the bottom shell cannot rotate relatively. A locking mechanism is arranged between the unlocking cover body and the locking cover body to achieve switching between relative rotation or non-relative rotation of the unlocking cover body and the locking cover body, annular threads are arranged on the inner side of the locking cover body, threads are correspondingly arranged on the outer wall of the threaded box body, and the locking cover body is connected with the threaded box body through the threads. The threaded box body and the box body base are made of plastic materials and are connected in a welding mode to achieve leakage-proof sealing. On the basis of a common safety lock packaging box, sealing and leakage prevention can be achieved, the purposes that customers need to package special products in a sealed mode and need to prevent children from opening the special products are met, the structure is upgraded, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to a packaging box, in particular to a packaging box with both leak-proof sealing and safety lock functions. Background Art

[0002] The existing packaging boxes with safety lock function on the market can be opened by children or people of inappropriate age with just a simple press of a switch, which is not very safe. For packaging boxes containing medicines or dangerous goods, if the difficulty of opening is not set, it is easy for children to open them by mistake, causing accidents or casualties of children.

[0003] At present, the annular convex teeth of the known safety lock packaging boxes of the same type are distributed on the top. Due to the inevitable material shrinkage problem in the injection molding process, the contact surface is uneven. After liquid products or products with strong odor are loaded, liquids are easily leaked from the shrinkage or odors are volatilized, and the sealing requirements cannot be met. In addition, the box body is generally made by blow molding (bottle blowing) technology, the mold cost is expensive, and the unit price of the product is high. Utility Model Content

[0004] The utility model designs a packaging box with both leak-proof sealing and safety lock functions, and solves the technical problem that the safety lock packaging box has poor sealing performance. After liquid products or products with strong odor are placed in it, liquids are easily leaked from the shrinkage or odors are volatilized, and the sealing requirements cannot be met.

[0005] In order to solve the above-mentioned technical problems, the utility model adopts the following solutions:

[0006] A packaging box with both leak-proof sealing and safety lock functions, characterized in that it includes an outer cover, an unlocking cover body, a locking cover body, a threaded box body, a box body base and a bottom shell, the unlocking cover body is fixed in the outer cover so that the two cannot rotate relative to each other, the box body base is fixed in the bottom shell so that the two cannot rotate relative to each other, there is a locking mechanism between the unlocking cover body and the locking cover body to achieve switching between relative rotation or non-relative rotation of the two, an annular thread is provided on the inner side of the locking cover body, and a thread is also provided on the outer wall of the threaded box body correspondingly, the locking cover body is connected to the threaded box body by threads; the threaded box body and the box body base are both made of plastic and are connected by welding to achieve leak-proof sealing.

[0007] Preferably, an ultrasonic welding line exists between the threaded box body and the box body base.

[0008] Preferably, the locking mechanism includes upper convex teeth and lower convex teeth, a circle of upper convex teeth at the bottom corner inside the unlocking cover body, and a circle of lower convex teeth at the top corner outside the locking cover body, and the upper convex teeth and the lower convex teeth can cooperate with each other so that the unlocking cover body and the locking cover body cannot rotate relative to each other.

[0009] Preferably, the locking cover body is located in the unlocking cover body and can move axially along the unlocking cover body, and a locking protrusion is provided at the opening of the unlocking cover body to prevent the locking cover body from falling out of the unlocking cover body.

[0010] Preferably, the locking cover is made of plastic, and the locking cover, the threaded box body and the box body base enable the entire packaging box to form a sealed plastic container.

[0011] Preferably, a snap-fit ​​block is provided on the outside of the unlocking cover body, and a snap-fit ​​position is provided at a corresponding position of the outer cover, and the unlocking cover body and the outer cover are fixed by snapping.

[0012] Preferably, the unlocking cover body is made of plastic, so that the upper convex teeth and the lower convex teeth are also made of plastic.

[0013] Preferably, the outer cover and the bottom shell are made of metal.

[0014] Preferably, the metal is tinplate.

[0015] The packaging box with both leak-proof sealing and safety lock function has the following beneficial effects:

[0016] (1) The utility model can achieve sealing and leak-proofing on the basis of a general safety lock packaging box, meeting the needs of customers for special products that require both sealed packaging and child-proof opening, with an upgraded structure and reduced costs.

[0017] (2) The utility model designs the annular convex teeth at the corners of the unlocking cover body and the locking cover body, so that during the unlocking operation, the upper convex teeth and the lower convex teeth can be easily engaged, which is convenient and accurate for unlocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 : An exploded view of the packaging box of the utility model having both leak-proof sealing and safety lock functions;

[0019] Figure 2 : The utility model shows the opening of a packaging box having both leak-proof sealing and safety lock functions;

[0020] Figure 3 : Schematic diagram of the unlocking cover structure in the utility model;

[0021] Figure 4 : Schematic diagram of the locking cover structure in the utility model.

[0022] Description of reference numerals:

[0023] 1—outer cover; 2—unlocking cover body; 21—upper convex teeth; 22—locking protrusions; 23—clamping blocks; 3—locking cover body; 31—lower convex teeth; 4—threaded box body; 5—plastic base; 6—ultrasonic welding line; 7—bottom shell. DETAILED DESCRIPTION

[0024] Combine the following Figures 1 to 4 , the utility model is further described:

[0025] like Figure 1 As shown, the utility model has both leak-proof sealing and safety lock functions, including an outer cover 1, an unlocking cover body 2, a locking cover body 3, a threaded box body 4, a box body base 5 and a bottom shell 7. The unlocking cover body 2 is fixed in the outer cover 1 so that the two cannot rotate relative to each other, and the box body base 5 is fixed in the bottom shell 7 so that the two cannot rotate relative to each other. There is a locking mechanism between the unlocking cover body 2 and the locking cover body 3 to achieve the switching of relative rotation or non-relative rotation between the two. An annular thread is provided on the inner side of the locking cover body 3, and a thread is also provided on the outer wall of the threaded box body 4 correspondingly. The locking cover body 3 is connected to the threaded box body 4 through threads; the threaded box body 4 and the box body base 5 are both made of plastic and are connected by welding to achieve leak-proof sealing.

[0026] There is an ultrasonic welding line 6 between the threaded box body 4 and the box body base 5. The locking cover body 3 is made of plastic, and the locking cover body 3, the threaded box body 4 and the box body base 5 make the entire packaging box form a sealed plastic container. The unlocking cover body 2 is made of plastic so that the upper convex teeth 21 and the lower convex teeth 31 are also made of plastic.

[0027] like Figure 2-Figure 3 As shown, the locking mechanism includes upper convex teeth 21 and lower convex teeth 31. There is a circle of upper convex teeth 21 at the bottom corner of the inner side of the unlocking cover body 2, and there is a circle of lower convex teeth 31 at the top corner of the outer side of the locking cover body 3. The upper convex teeth 21 and the lower convex teeth 31 can cooperate with each other so that the unlocking cover body 2 and the locking cover body 3 cannot rotate relative to each other. The locking cover body 3 is located in the unlocking cover body 2 and can move along the axial direction of the unlocking cover body 2. A locking protrusion 22 is provided at the opening of the unlocking cover body 2 to prevent the locking cover body 3 from falling out of the unlocking cover body 2.

[0028] A snap-fit ​​block 23 is provided on the outside of the unlocking cover 2, and a snap-fit ​​position is provided at a corresponding position of the outer cover 1, and the unlocking cover 2 is fixed to the outer cover 1 by snap-fitting. The outer cover 1 and the bottom shell 7 are made of metal. The metal can be tinplate.

[0029] In summary, in the multi-layer structural component assembly of the utility model, the iron outer cover 1 is used to be combined with the plastic unlocking cover body 2 as a whole, and the iron bottom shell 7 is used to be combined with the plastic base 5 as a whole. There is a circle of upper convex teeth 21 at the bottom corner of the inner side of the unlocking cover body 2, and there is a circle of lower convex teeth 31 at the top corner of the outer side of the locking cover body 3. The upper convex teeth 21 and the lower convex teeth 31 can cooperate with each other. The inner side of the locking cover body 3 is provided with threads, and the outer side of the threaded box body 4 is also provided with threads, and the two can be connected by threads. The locking cover body 3 is embedded in the unlocking cover body 2 to form an upper and lower convex teeth ring-shaped positioning movable interlocking structure.

[0030] When pressed downward by external force, the locking cover 3 can move upwards equivalent to the unlocking cover 2, and the upper convex teeth 21 and the lower convex teeth 31 are locked and the knob is turned, so that the locking cover 3 and the unlocking cover 2 will not rotate relative to each other. The locking cover 3 and the lower threaded box body 4 can be unlocked by rotation. When not pressed downward by external force, the upper and lower convex teeth separate the unlocking cover 2 and rotate left and right without twisting the locking cover 3, thereby maintaining a locked state with the lower threaded box body 4.

[0031] The threaded box body 4 and the box body base 5 are ultrasonically welded to form a sealed ultrasonic weld line 6, so that the entire box body structure forms a sealed container, and when tightened with the locking cover body 3, a leak-proof function is achieved.

[0032] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A packaging box with both leak-proof sealing and safety lock functions, characterized in that: The invention comprises an outer cover (1), an unlocking cover body (2), a locking cover body (3), a threaded box body (4), a box body base (5) and a bottom shell (7); the unlocking cover body (2) is fixed in the outer cover (1) so that the two cannot rotate relative to each other; the box body base (5) is fixed in the bottom shell (7) so that the two cannot rotate relative to each other; a locking mechanism is provided between the unlocking cover body (2) and the locking cover body (3) to realize switching between relative rotation and non-relative rotation of the two; an annular thread is provided on the inner side of the locking cover body (3); and a thread is correspondingly provided on the outer wall of the threaded box body (4); the locking cover body (3) and the threaded box body (4) are connected by the thread; the threaded box body (4) and the box body base (5) are both made of plastic and are connected by welding to realize leakproof sealing.

2. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: An ultrasonic welding line (6) is present between the threaded box body (4) and the box body base (5).

3. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: The locking mechanism comprises upper convex teeth (21) and lower convex teeth (31); the unlocking cover body (2) has a circle of upper convex teeth (21) at the bottom corner inside, and the locking cover body (3) has a circle of lower convex teeth (31) at the top corner outside, and the upper convex teeth (21) and the lower convex teeth (31) can cooperate with each other so that the unlocking cover body (2) and the locking cover body (3) cannot rotate relative to each other.

4. The packaging box with both leak-proof sealing and safety lock functions according to claim 3, characterized in that: The locking cover body (3) is located in the unlocking cover body (2) and is movable along the axial direction of the unlocking cover body (2). A locking protrusion (22) is provided at the opening of the unlocking cover body (2) to prevent the locking cover body (3) from falling out of the unlocking cover body (2).

5. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: The locking cover (3) is made of plastic, and the locking cover (3), the threaded box body (4) and the box body base (5) enable the entire packaging box to form a sealed plastic container.

6. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: A snap-fit ​​block (23) is provided on the outside of the unlocking cover body (2), and a snap-fit ​​position is provided at a corresponding position of the outer cover (1), so that the unlocking cover body (2) and the outer cover (1) are fixed by snap-fitting.

7. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: The unlocking cover body (2) is made of plastic, so that the upper protruding teeth (21) and the lower protruding teeth (31) are also made of plastic.

8. The packaging box with both leak-proof sealing and safety lock functions according to claim 1, characterized in that: The outer cover (1) and the bottom shell (7) are made of metal.

9. The packaging box with both leak-proof sealing and safety lock functions according to claim 8, characterized in that: The metal is tinplate.

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