Plastic box with multi-layer sealing structure

Abstract

The plastic box with the multi-layer sealing structure comprises a box body, an upper cover is connected to an opening in the upper portion of the box body in a pluggable mode, the upper cover is of a hollow structure, a ventilation hole penetrating through the upper cover is formed in the surface of the upper cover, a ventilation switch is arranged in the upper cover, and the ventilation switch is connected with the box body in a pluggable mode. Ventilation holes are formed in the surface of the ventilation switch, and opening and closing of the ventilation holes can be selected through the ventilation switch. The top of the upper cover is further provided with a sealing mechanism capable of sealing the vent hole. By arranging the ventilation switch, the sealing state of each box chamber can be adjusted, the storage environment of each box chamber can be adjusted according to the types of stored articles, and the first ventilation hole and the second ventilation hole in the surface of the upper cover are further sealed through the sealing mechanism, so that the sealing performance of the whole box body is improved.

Description

Technical Field

[0001] The utility model relates to the field of plastic boxes, in particular to a plastic box with a multi-layer sealing structure. Background Art

[0002] Plastic boxes are widely used in the transportation of some supermarkets, fresh fruits and vegetables, etc. However, after being used multiple times, cracks are likely to appear at the closing part of the plastic box, shortening the service life of the plastic box.

[0003] In the related art, through retrieval, a utility model patent with the patent publication number CN204161766U proposes a plastic box, which includes a box body and a box cover. A partition layer is provided in the box body, and the partition layer is installed in the groove of the box body. The middle partition layer can be taken out. The middle partition layer divides the box body into an upper box body and a lower box body. Sealing edge members are provided on the contact edges of the box cover and the box body. A sealing element for slowing down collision and playing a sealing role is provided inside the edge member. Folding connecting members and switch connecting members for connecting the box cover and the box body are provided on the edge member. The folding connecting member is provided on one side of the box body, and the switch connecting member is provided on the opposite side of the folding connecting member of the box body.

[0004] According to the above prior art, the inventor combines relevant technologies and finds in actual application that this utility model is in a completely sealed state and does not have a ventilation structure, and can only store items that do not require ventilation. Items that need to be stored with ventilation can only be stored in other plastic boxes, which brings inconvenience to users during use. Summary of the Utility Model

[0005] In order to solve the problem in the prior art that there is no ventilation structure and it can only store items that do not require ventilation and cannot store items that need ventilation at the same time, the utility model provides a plastic box with a multi-layer sealing structure;

[0006] The plastic box with a multi-layer sealing structure provided by the utility model adopts the following technical solutions:

[0007] A plastic box with a multi-layer sealing structure includes a box body. A top cover is detachably connected to the upper opening of the box body. The top cover is a hollow structure. Ventilation holes penetrating through the top cover are provided on the surface of the top cover. A ventilation switch is arranged inside the top cover. Air exchange holes are provided on the surface of the ventilation switch. The opening and closing of the air exchange holes can be selected through the ventilation switch; a sealing mechanism for sealing the ventilation holes is further provided on the top of the top cover;

[0008] Furthermore, a sliding groove is arranged inside the box body, and a partition board is slidably connected in the sliding groove. The partition board divides the box body into a first box chamber and a second box chamber;

[0009] Further, on the radial axis of the virtual circumference at the center position of the upper cover, a first ventilation hole and a second ventilation hole penetrating the upper cover are symmetrically provided, corresponding to the first chamber and the second chamber respectively;

[0010] Further, the ventilation switch is rotatably connected inside the upper cover. At the axial center position of the top of the ventilation switch, a driven wheel is integrally formed. A through hole penetrating to the inside of the upper cover is provided at the top of the upper cover. The upper cover is rotatably connected with a driving wheel through this through hole. The driving wheel is meshed and connected with the driven wheel. At the axial center position of the top of the driving wheel, a screwing part extending outside the top of the upper cover is integrally formed;

[0011] Further, a first air exchange hole and a second air exchange hole are symmetrically provided on the radial axis of the ventilation switch, and their positions correspond to the first ventilation hole and the second ventilation hole respectively;

[0012] Further, a third air exchange hole is also provided on the radial axis of the ventilation switch. The virtual connection line between the third air exchange hole and the axis forms a 45-degree angle with the virtual connection line between any one of the first air exchange hole or the second air exchange hole and the axis;

[0013] Further, the sealing mechanism includes a fastening head, a sealing cover and a spring; a stud is provided at the top of the upper cover. A through hole for the stud to pass through is provided at the top of the sealing cover. The sealing cover is movably connected with the stud through this through hole. A fastening head for pressing down the sealing cover is threadedly connected to the top of the stud. A spring for jacking up the sealing cover is sleeved around the stud;

[0014] Further, a connecting groove is provided at the upper opening of the box body. A connecting part is integrally formed at the bottom of the upper cover. The connecting part is inserted into the connecting groove and is in interference fit with the connecting groove.

[0015] In summary, the beneficial effects of the present utility model are as follows:

[0016] By setting the ventilation switch, the present utility model can adjust the sealing state of each chamber, determine the required storage conditions according to the types of stored items, and adjust the storage environment of each chamber through the ventilation switch; by setting the sealing mechanism, the first ventilation hole and the second ventilation hole on the surface of the upper cover can be further sealed. When the storage conditions required by the items need to be extremely sealed, the first ventilation hole and the second ventilation hole can be closed through the sealing mechanism to increase the sealing performance of the entire box body. Description of the Drawings

[0017] Figure 1 It is a front view schematic diagram of the present utility model;

[0018] Figure 2 It is a schematic diagram of the lower side of the upper cover of the present utility model;

[0019] Figure 3 Schematic diagram of the box structure of the present utility model;

[0020] Figure 4 Schematic sectional view of the upper cover of the present utility model;

[0021] Figure 5 Schematic diagram of the top structure of the upper cover of the present utility model;

[0022] Figure 6 Perspective schematic diagram of the internal structure of the upper cover of the present utility model;

[0023] Figure 7 Schematic diagram of the operating principle of the ventilation switch and the upper cover of the present utility model.

[0024] As shown in the figure: 1 - box body, 11 - sliding groove, 12 - partition board, 13 - connecting groove, 14 - connecting part, 15 - first chamber, 16 - second chamber, 2 - upper cover, 21 - first ventilation hole, 22 - second ventilation hole, 23 - driven wheel, 24 - driving wheel, 25 - screwing part, 3 - ventilation switch, 31 - first air exchange hole, 32 - second air exchange hole, 33 - third air exchange hole, 4 - sealing mechanism, 41 - fastening head, 42 - sealing cover, 43 - spring, 44 - stud. Specific embodiments

[0025] The following further describes the present utility model in detail with reference to the appended Figure 1 - appended Figure 7 drawings:

[0026] The embodiment of the present utility model discloses a plastic box with a multi - layer sealing structure. As Figure 1 , Figure 6 shown, a plastic box with a multi - layer sealing structure of the present utility model includes a box body 1. The upper opening of the box body 1 is connected with an upper cover 2 in a plug - and - play manner. The upper cover 2 is a hollow structure. The surface of the upper cover 2 is provided with ventilation holes penetrating through the upper cover 2. An ventilation switch 3 is arranged inside the upper cover 2. The surface of the ventilation switch 3 is provided with air exchange holes. The opening and closing of the air exchange holes can be selected through the ventilation switch 3. A sealing mechanism 4 for sealing the ventilation holes is further arranged on the top of the upper cover 2. In this embodiment, by arranging the ventilation switch 3 inside the upper cover 2, the upper cover 2 can be sealed. By setting the sealing mechanism 4, the ventilation holes on the surface of the upper cover 2 can be further sealed. When the storage conditions required for the items need to be extremely sealed, the ventilation holes can be closed through the sealing mechanism 4, increasing the sealing performance of the entire box body 1.

[0027] As Figure 3As shown in the figure, a chute 11 is provided inside the box body 1. A partition 12 is slidably connected in the chute 11. The partition 12 divides the box body 1 into a first chamber 15 and a second chamber 16. In this embodiment, by providing the chute 11 and the partition 12, the box body 1 can be divided into the first chamber 15 and the second chamber 16, and the internal space of the box body 1 can be adjusted according to the storage needs. The first chamber 15 and the second chamber 16 can be respectively sealed and ventilated through the ventilation switch 3.

[0028] As Figure 2 , Figure 4 , Figure 5 shown, first ventilation holes 21 and second ventilation holes 22 penetrating through the upper cover 2 are symmetrically opened on the radial axis of the virtual circumference at the center position of the upper cover 2, corresponding to the first chamber 15 and the second chamber 16 respectively. In this embodiment, with the center position of the upper cover 2 as the center of the virtual circle, the first ventilation holes 21 and the second ventilation holes 22 are opened at symmetric positions on the radial axis, and the first ventilation holes 21 are located above the first chamber 15, and the second ventilation holes 22 are located above the second chamber 16. This virtual center is on the same axis as the center of the ventilation switch 3.

[0029] As Figure 4 , Figure 5 , Figure 6 shown, the ventilation switch 3 is rotatably connected inside the upper cover 2. A driven wheel 23 is integrally formed at the top axis position of the ventilation switch 3. A through hole penetrating through the upper cover 2 is opened at the top of the upper cover 2. The upper cover 2 rotatably connects a driving wheel 24 through this through hole. The driving wheel 24 is meshed and connected with the driven wheel 23. A screwing part 25 extending outside the top of the upper cover 2 is integrally formed at the top axis position of the driving wheel 24. In this embodiment, the ventilation switch 3 is in a circular disc shape. The ventilation switch 3 contacts the upper and lower inner walls of the upper cover 2 but can still rotate inside the upper cover 2. The driving wheel 24 is rotatably connected to the top wall of the upper cover 2 through the through hole at the top of the upper cover 2. The part extending outside the top of the upper cover 2 forms the screwing part 25. The screwing part 25 and the driving wheel 24 are on the same axis. By rotating the screwing part 25, the driving wheel 24 can be rotated, and the meshed driven wheel 23 will also rotate, thereby driving the ventilation switch 3 to rotate inside the upper cover 2.

[0030] As Figure 6 , Figure 7As shown, first air exchange holes 31 and second air exchange holes 32 are symmetrically formed on the radial axis of the air vent switch 3, and their positions respectively correspond to the first air vent 21 and the second air vent 22. In this embodiment, the distances from the first air exchange holes 31 and the second air exchange holes 32 to the center of the air vent switch 3 are equal to the distances from the first air vent 21 and the second air vent 22 to the center of the virtual circumference. When the first air exchange holes 31 and the second air exchange holes 32 coincide with the first air vent 21 and the second air vent 22, the first chamber 15 and the second chamber 16 are in a ventilation state. When the first air exchange holes 31 and the second air exchange holes 32 do not coincide with the first air vent 21 and the second air vent 22, the first chamber 15 and the second chamber 16 are in a sealed state.

[0031] As Figure 7 shown, a third air exchange hole 31 is further formed on the radial axis of the air vent switch 3. The virtual connection line between the third air exchange hole 31 and the axis forms a 45-degree angle with the virtual connection line between any one of the first air exchange hole 31 or the second air exchange hole 32 and the axis. In this embodiment, by providing the third air exchange hole 33, the usage states of the air vent switch 3 can be increased. When the third air exchange hole 33 coincides with any one of the first air vent 21 or the second air vent 22, neither the first air exchange hole 31 nor the second air exchange hole 32 coincides with the first air vent 21 and the second air vent 22. At this time, a single chamber can be selected for ventilation.

[0032] As Figure 1 、 Figure 4 shown, the sealing mechanism 4 includes a fastening head 41, a sealing cover 42 and a spring 43. A stud 44 is provided at the top of the upper cover 2. A through hole for the stud 44 to pass through is formed at the top of the sealing cover 42. The sealing cover 42 is movably connected to the stud 44 through this through hole. A fastening head 41 for pressing down the sealing cover 42 is threadedly connected to the top of the stud 44. A spring 43 for jacking up the sealing cover 42 is sleeved around the stud 44. In this embodiment, when the box body 1 needs to be further sealed, the fastening head 41 is screwed, and the sealing cover 42 is pressed down by the fastening head 41 to cover the first air vent 21 and the second air vent 22, increasing the sealing performance inside the box body 1. When ventilation is required, the fastening head 41 is screwed in the reverse direction, and the sealing cover 42 will rise under the action of the spring 43, exposing the first air vent 21 and the second air vent 22.

[0033] As Figure 1 、 Figure 2 、 Figure 3As shown, a connection groove 13 is provided at the upper opening of the box body 1, and a connection part 14 is integrally formed at the bottom of the upper cover 2. The connection part 14 is inserted into the connection groove 13 and is in interference fit with the connection groove 13. In this embodiment, the upper cover 2 is inserted into the connection groove 13 at the upper opening of the box body 1 through the connection part 14 at the bottom and is in interference fit with the connection groove 13. The advantage of this is that the sealing between the box body 1 and the upper cover 2 is good.

[0034] The implementation principle of the embodiment of the present utility model is as follows:

[0035] Insert the partition 12 into the sliding groove 11, and place the items to be stored into different compartments according to the storage conditions. When the items need to be stored in a sealed manner, rotate the screwing part 25 so that the first ventilation hole 31, the second ventilation hole 32, and the third ventilation hole 33 do not coincide with the first ventilation hole 21 and the second ventilation hole 22 on the upper cover 2. Then screw the fastening head 41 to press down the sealing cover 42 through the fastening head 41 to seal the first ventilation hole 21 and the second ventilation hole 22.

[0036] When the items in both the first compartment 15 and the second compartment 16 need ventilation, rotate the screwing part 25 to make the first ventilation hole 31 and the second ventilation hole 32 coincide with the first ventilation hole 21 and the second ventilation hole 22, and ventilation can be completed.

[0037] When the items in one of the compartments need ventilation, rotate the screwing part 25 to make the third ventilation hole 33 coincide with the ventilation hole corresponding to the compartment that needs ventilation, and ventilation of a single compartment can be achieved.

[0038] The above shows and describes the basic principles, main features, and advantages of the present utility model. Each component mentioned in the present utility model is a common technology in the existing field. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic box with a multi-layer sealing structure, comprising a box body (1), wherein an upper cover (2) is pluggably connected to the upper opening of the box body (1), characterized in that: The upper cover (2) is a hollow structure, a ventilation hole penetrating the upper cover (2) is provided on the surface of the upper cover (2), a ventilation switch (3) is provided inside the upper cover (2), a ventilation hole is provided on the surface of the ventilation switch (3), and the ventilation hole can be opened or closed by the ventilation switch (3); a sealing mechanism (4) capable of sealing the ventilation hole is also provided on the top of the upper cover (2).

2. A plastic box with a multi-layer sealing structure according to claim 1, characterized in that: The box body (1) is provided with a slide groove (11) inside, and a partition plate (12) is slidably connected inside the slide groove (11), and the partition plate (12) divides the box body (1) into a first box chamber (15) and a second box chamber (16).

3. The plastic box with a multi-layer sealing structure according to claim 2, characterized in that: A first vent hole (21) and a second vent hole (22) penetrating the upper cover (2) are symmetrically provided on the radial axis of the virtual circle at the center of the upper cover (2), corresponding to the first chamber (15) and the second chamber (16) respectively.

4. The plastic box with a multi-layer sealing structure according to claim 3, characterized in that: The ventilation switch (3) is rotatably connected to the interior of the upper cover (2); a driven wheel (23) is integrally formed at the top axial position of the ventilation switch (3); a through hole is opened at the top of the upper cover (2) and penetrates into the interior of the upper cover (2); a driving wheel (24) is rotatably connected to the upper cover (2) through the through hole; the driving wheel (24) is meshedly connected to the driven wheel (23); a screwing portion (25) extending outside the top of the upper cover (2) is integrally formed at the top axial position of the driving wheel (24).

5. The plastic box with a multi-layer sealing structure according to claim 4, characterized in that: A first ventilation hole (31) and a second ventilation hole (32) are symmetrically provided on the radial axis of the ventilation switch (3), and their positions correspond to the first ventilation hole (21) and the second ventilation hole (22) respectively.

6. The plastic box with a multi-layer sealing structure according to claim 5, characterized in that: A third ventilation hole (33) is also provided on the radial axis of the ventilation switch (3), and a virtual line connecting the third ventilation hole (33) and the axis forms an angle of 45 degrees with a virtual line connecting any one of the first ventilation hole (31) or the second ventilation hole (32) and the axis.

7. A plastic box with a multi-layer sealing structure according to claim 1 or 6, characterized in that: The sealing mechanism (4) comprises a fastening head (41), a sealing cover (42) and a spring (43); a stud (44) is arranged on the top of the upper cover (2); a through hole is provided on the top of the sealing cover (42) for the stud (44) to pass through; the sealing cover (42) is movably connected to the stud (44) through the through hole; the top of the stud (44) is threadedly connected with the fastening head (41) for pressing down the sealing cover (42); and a spring (43) for lifting the sealing cover (42) is sleeved around the stud (44).

8. The plastic box with a multi-layer sealing structure according to claim 1, characterized in that: The upper opening of the box body (1) is provided with a connecting groove (13), and the bottom of the upper cover (2) is integrally formed with a connecting portion (14), and the connecting portion (14) is inserted into the connecting groove (13) and is interference-fitted with the connecting groove (13).

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