Garbage can anti-pollution structure

Abstract

The utility model belongs to the technical field of garbage cans, in particular to an anti-pollution structure of a garbage can, which comprises a can body, the can body is provided with a hidden fixing structure capable of fixing a garbage bag without pulling the garbage bag by hand or folding the garbage bag inwards, and after the garbage bag is sleeved on the inner side of the can body, the top surface of the garbage bag can be in direct contact with the outside. According to the garbage can, the garbage bag can be fixed through the arranged hidden fixing structure for fixing the garbage bag, after the garbage bag is arranged on the inner side of the can body in a sleeving mode, the top face of the garbage bag can make direct contact with the outside, the situation that when garbage is thrown, the top face of the garbage can is polluted by the garbage is avoided, operation is convenient, and the appearance is attractive.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage cans, and in particular relates to an anti-pollution structure for a garbage can. Background Art

[0002] After the garbage bag is put into the garbage can, the matching structure of the pressing ring and the top of the garbage can can clamp and fix the excess part of the garbage bag, so as to prevent the garbage bag from being separated from the top of the garbage can when the garbage is put into the garbage can;

[0003] Since the pressure ring is the part closest to the trash can opening and is directly exposed without protection, it is easy to contaminate the pressure ring when throwing in trash, especially when throwing in wet trash. The pressure ring may be contaminated if you are not careful. When changing the trash bag, you need to remove the pressure ring by hand, which is very unhygienic. Utility Model Content

[0004] To solve the problems raised in the above background technology, the utility model provides a garbage can anti-pollution structure, which enables the top surface of the garbage bag to be in direct contact with the outside world, avoiding the garbage from contaminating the top surface of the garbage can when the garbage is put in, and is easy to operate and beautiful in appearance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a garbage can anti-pollution structure, including a barrel body, on which a hidden fixing structure is provided for fixing the garbage bag without having to pull or fold the garbage bag by hand; after the garbage bag is put on the inner side of the barrel body, the top surface of the garbage bag can be in direct contact with the outside world.

[0006] As a preferred anti-pollution structure for a garbage can of the utility model, the fixing structure is a fastening connection structure.

[0007] As a preferred anti-pollution structure for a garbage can of the utility model, a top plate is fixedly connected to the edge of the top opening of the barrel body, and the fixed structure is arranged at a non-top surface position of the top plate.

[0008] As a preferred anti-pollution structure for a trash can of the utility model, a top plate is fixedly connected to the edge of the top opening of the barrel body, and a side plate is fixedly connected to the outer edge of the top plate. A semi-enclosed space opening downward is formed between the barrel body, the top plate and the side plates, and the fixed structure is arranged at an inner position of the semi-enclosed space.

[0009] As a preferred anti-pollution structure for a trash can of the utility model, a fitting portion capable of fitting with an elastic inward fitting piece is provided on the outer side of one end of the barrel body, and after the top of the garbage bag covers the top of the barrel body, the excess part is restricted at the fitting portion by the fitting piece.

[0010] As a preferred anti-pollution structure of the trash can of the present utility model, a single limiting portion extending towards the semi-closed space is provided at the bottom of the side plate. The portion between the single limiting portion and the top plate can cooperate with the limiting member elastically outward. The excess part of the garbage bag after covering the top of the barrel body is restricted at the inner wall of the side plate by the limiting member.

[0011] As a preferred anti-pollution structure of the trash can of the present utility model, double limiting portions are symmetrically provided on each of the adjacent sides of the barrel body and the side plate. The inner side of the semi-closed space can accommodate a fastener. Both bottom sides of the fastener are restricted by the double limiting portions. The excess part of the garbage bag after covering the top of the barrel body is restricted at the semi-closed space by the fastener.

[0012] As a preferred anti-pollution structure of the trash can of the present utility model, it further includes a first magnet fixedly arranged relative to the barrel body. The first magnet is magnetically adsorbed to the second magnet. The excess part of the garbage bag after covering the top of the barrel body is clamped and restricted in position by the first magnet and the second magnet.

[0013] As a preferred anti-pollution structure of the trash can of the present utility model, the second magnet is fixed by a magnet bracket.

[0014] As a preferred anti-pollution structure of the trash can of the present utility model, a through hole is provided at the position of the top plate. A negative pressure device is installed at the bottom of the top plate. The negative pressure generating end of the negative pressure device is communicated with the through hole. The excess part of the garbage bag after covering the top of the barrel body is adsorbed by the negative pressure in the through hole.

[0015] As a preferred anti-pollution structure of the trash can of the present utility model, a large restraint member is detachably fixed to the outside of the side plate. The excess part of the garbage bag after covering the top of the barrel body is clamped and fixed between the inner wall of the large restraint member and the outer wall of the side plate.

[0016] As a preferred anti-pollution structure of the trash can of the present utility model, a small restraint member is detachably fixed to the outside of the side plate. The excess part of the garbage bag after covering the top of the barrel body is clamped and fixed between the inner wall of the small restraint member and the outer wall of the side plate.

[0017] As a preferred anti-pollution structure of the trash can of the present utility model, a limiting groove is provided on the outside of the side plate. An elastic member is engaged inside the limiting groove. The excess part of the garbage bag after covering the top of the barrel body is restricted between the elastic member and the limiting groove.

[0018] As a preferred anti-pollution structure of the trash can of the present utility model, an outer limiting portion is fixedly provided on the outer end face of the side plate. A fixing member is sleeved on the outside of the side plate. The excess part of the garbage bag after covering the top of the barrel body is restricted between the fixing member and the side plate.

[0019] Preferably, as an anti-pollution structure of a trash can according to the present utility model, a through hole is provided at the position of the top plate, and a one-way sealing piece covers the bottom at the position of the through hole. One end of the one-way sealing piece can be fixed to one end of the bottom surface of the top plate and rotate around the fixed point. A pressing ring is provided at the top of the barrel body. The pressing ring includes an inner ring, a top surface and an outer ring. The inner ring is in sliding contact with the inner wall of the top end of the barrel body. The outer ring is slidably connected to the outer wall of the side plate. The height of the inner ring is greater than the height of the outer ring. A plurality of through grooves are provided on both the top surface and the outer ring.

[0020] Preferably, as an anti-pollution structure of a trash can according to the present utility model, friction parts are installed at the parts where the inner ring, the outer ring are in contact with the side plate and the top of the barrel body respectively.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the provided hidden fixing structure for fixing the garbage bag, the garbage bag can be fixed. And after the garbage bag is sleeved inside the barrel body, the top surface of the garbage bag can be in direct contact with the outside, avoiding the pollution of the topmost position of the trash can when throwing garbage, and the operation is convenient and the appearance is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0023] Figure 1 is a cross-sectional view of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0025] Figure 3 is a cross-sectional view of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0026] Figure 4 is a schematic diagram of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0027] Figure 5 is a cross-sectional view of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0028] Figure 6 is a cross-sectional view of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0029] Figure 7 is a cross-sectional view of the cooperation mode of the barrel body and the fixing structure of the present utility model;

[0030] Figure 8Schematic diagram of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0031] Figure 9 Cross-sectional view of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0032] Figure 10 Schematic diagram of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0033] Figure 11 Schematic diagram of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0034] Figure 12 Schematic diagram of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0035] Figure 13 Cross-sectional view of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0036] Figure 14 Cross-sectional view of the cooperation mode between the barrel body and the fixing structure of the present utility model;

[0037] Figure 15 Cross-sectional view of the cooperation mode between the barrel body of the present utility model and the existing pressure ring.

[0038] In the figure:

[0039] 1. Barrel body; 101. Top plate; 102. Side plate; 103. Semi-closed space; 104. Single limit part; 105. Double limit part; 106. Limit groove; 107. Outer limit part; 108. Through hole; 109. One-way sealing piece;

[0040] 2. Garbage bag;

[0041] 3. Fitting part; 4. Fitting piece; 5. Limiting piece; 501. Widening part; 502. Extension rod; 6. Fastener; 601. Handle; 7. First magnet; 8. Second magnet; 801. Magnet bracket; 802. Flanging; 9. Negative pressure device; 11. Large restraint piece; 12. Small restraint piece; 13. Elastic piece; 14. Fixing piece; 15. Pressure ring; 1501. Inner ring; 1502. Top surface; 1503. Outer ring; 16. Variable space; 17. Through groove; 18. Friction part. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0043] As shown in Figures 1 - 15 the following:

[0044] A pollution-proof structure for a trash can, including a barrel body 1, is provided with a hidden fixing structure on the barrel body 1 that can fix the garbage bag 2 without the need to manually pull or fold the garbage bag 2 inward. After the garbage bag 2 is sleeved inside the barrel body 1, the top plate 101 of the garbage bag 2 can be in direct contact with the outside world.

[0045] The shape of the barrel body 1 includes but is not limited to cylindrical, square, semi-cylindrical, racetrack-shaped, and elliptical-ring-shaped;

[0046] Furthermore, the purpose of the hidden type is for aesthetics and to avoid excessive sharp corners, making it more convenient and handy to use.

[0047] First embodiment:

[0048] After the garbage bag 2 is sleeved inside the barrel body 1, the top of the garbage bag 2 covers the top end of the barrel body 1, enabling the garbage bag 2 to be in direct contact with the outside world, thereby avoiding the top end of the barrel body 1 from being polluted by garbage when throwing garbage into the trash can. Because when throwing garbage, the top end of the barrel body 1 is the part most likely to be polluted by garbage;

[0049] It should be noted that the top of the garbage bag 2 covers the top end of the barrel body 1. The barrel body 1 includes its own structure of the barrel body 1, as well as structures integrally formed directly with the barrel body 1 (such as the top plate 101 and the side plate 102), and accessory structures (such as the elastic member 13 and the fixing member 14) used for movably installing at the opening of the barrel body 1. Considering these structures and the barrel body 1 as a whole (hereinafter simply referred to as the entire trash can), the top end surface of the whole should not be directly exposed, but be covered by the garbage bag 2;

[0050] Regarding the top end surface of the garbage bag 2 being able to be in direct contact with the outside world, it further needs to be explained that when the garbage bag 2 is sleeved on the entire trash can, at least the top end surface of the entire trash can should be covered by the garbage bag 2. Because when throwing garbage, the top end surface of the entire trash can is the part most likely to be polluted by garbage.

[0051] In this solution, when the fixing structure cooperates with the barrel body 1, the fixing structure should be hidden. The hidden fixing structure is not invisible to the naked eye, but from the appearance, it is basically the same as the shape of a traditional trash can and will not look obtrusive due to the addition of the fixing structure. While obtaining this function (this function refers to that the top of the entire trash can will not be polluted), the original basic shape can be maintained as much as possible, ensuring its aesthetics and avoiding excessive sharp corners;

[0052] Moreover, when the fixing structure is in use, it should be convenient and have stable performance, such as Figure 15As shown, after the garbage bag 2 is sleeved on the retaining ring 15, the excess garbage bag 2 is placed in the gap between the retaining ring 15 and the trash can, and the retaining ring 15 is snap-fitted and fixed at the opening of the trash can. Although this structure using the traditional retaining ring 15 can avoid the topmost surface of the entire trash can from being contaminated by changing its usage method, in actual operation, it is necessary to repeatedly pull or fold the garbage bag 2 inward to achieve this. Moreover, the garbage bag 2 is generally relatively thin, and during the process of placing the excess garbage bag 2 into the gap between the retaining ring 15 and the trash can, affected by the air flow, the garbage bag 2 that has already entered the gap between the retaining ring 15 and the trash can is likely to move out of this gap again. This air flow can be generated externally or can be generated when the hand pulls the garbage bag 2. Taking a trash can with a circular opening as an example, after a part of the excess garbage bag 2 is placed in the gap between the retaining ring 15 and the trash can, when the other parts of the excess garbage bag 2 are successively placed in the gap between the retaining ring 15 and the trash can, the placement process will also pull the garbage bag 2, resulting in the garbage bag 2 that has already entered the gap between the retaining ring 15 and the trash can moving out of this gap again due to the pulling force caused by uneven stress, making the actual operation very laborious.

[0053] Second Embodiment:

[0054] A top plate 101 is fixedly connected to the edge of the top opening of the barrel body 1, and the fixing structure is arranged at a non-top surface position of the top plate 101.

[0055] In this embodiment, arranging the fixing structure at a non-top surface position of the top plate 101 can more conveniently fix the garbage bag 2 through the fixing structure. Because when the fixing structure is arranged at the top surface position of the top plate 101, in order to achieve the anti-pollution function, the fixing structure itself must be wrapped, which will make the operation more complex, or the production cost will increase in the case of simple operation.

[0056] Third Embodiment:

[0057] A top plate 101 is fixedly connected to the edge of the top opening of the barrel body 1, and a side plate 102 is fixedly connected to the outer edge of the top plate 101. A semi-closed space 103 with an opening downward is formed between the barrel body 1, the top plate 101 and the side plate 102, and the fixing structure is arranged at an inner position of the semi-closed space 103.

[0058] In this embodiment: The semi-closed space 103 is a structure that most household trash cans on the market currently have. The fixing structure is arranged at the inner side of the semi-closed space 103, and there is basically no difference in appearance from the traditional trash can structure, making the fixing structure have a better hiding effect, making the whole look simple and generous, and not affecting the normal use of the trash can. Moreover, setting the fixing structure at the inner side of the semi-closed space 103 can also prevent the fixing structure from separating from the trash can due to external contact, thereby increasing the stability of the cooperation between the fixing structure and the trash can.

[0059] Fourth Embodiment:

[0060] As Figure 1 shown, a mating portion 3 capable of mating with an elastically inward mating member 4 is provided on the outer side of one end of the barrel body 1, and the excess portion of the top of the garbage bag 2 after covering the top of the barrel body 1 is restricted at the mating portion 3 by the mating member 4.

[0061] In this embodiment: The mating member 4 has a structure with an opening. Taking a household cylindrical trash can as an example, then the mating member 4 can be a ring with an opening. By pulling the mating member 4 with the hand, the diameter of the mating member 4 is made larger than the diameter of the side plate 102, so that the pulled mating member 4 can bypass the outer side of the side plate 102 and move downwards from top to bottom. When the mating member 4 moves past the bottom end of the side plate 102, then move the mating member 4 towards the mating portion 3. During this process, the mating member 4 will drive the excess garbage bag 2 to move together until the mating member 4 is fixed in cooperation with the mating portion 3 through its own inward elastic force, thereby fixing the excess portion of the garbage bag 2, and at the same time satisfying that the top of the top plate 101 is covered and wrapped by the garbage bag 2.

[0062] Fifth Embodiment:

[0063] As Figure 3 shown, a single limiting portion 104 extending towards the semi-closed space 103 is provided at the bottom of the side plate 102, and the portion between the single limiting portion 104 and the top plate 101 can cooperate with an elastically outward limiting member 5, and the excess portion of the top of the garbage bag 2 after covering the top of the barrel body 1 is restricted at the inner wall of the side plate 102 by the limiting member 5.

[0064] In this embodiment: The limiting member 5 has a structure with an opening. Taking a household cylindrical trash can as an example, the limiting member 5 can be a ring with an opening. Without external force, the diameter of the limiting member 5 is greater than the diameter of the side plate 102. Move the limiting member 5 so that it moves downward from above around the outside of the side plate 102. When the limiting member 5 moves past the bottom end of the side plate 102, actively compress the limiting member 5 so that its diameter is compressed and becomes smaller than the inner wall diameter of the single limiting portion 104. Then move the limiting member 5 upward so that the limiting member 5 completely enters the semi-closed space 103 and is located between the single limiting portion 104 and the top plate 101. Then stop compressing the limiting member 5. The limiting member 5 will be in contact with the inner wall of the side plate 102 squeezed between the single limiting portion 104 and the top plate 101 due to its own elastic force. During this process, the movement of the limiting member 5 will drive the excess part of the garbage bag 2 to move together, so that the garbage bag 2 is clamped and fixed between the limiting member 5 and the inner wall of the side plate 102;

[0065] Further, for the convenience of operating the limiting member 5, an extension rod 502 can be installed on the limiting member 5. By operating the extension rod 502, the diameter of the limiting member 5 can be changed. Through the provided widened portion 501, the connection between the extension rod 502 and the limiting member 5 can be made more stable.

[0066] Sixth Embodiment:

[0067] As Figure 4 and Figure 5 shown, double limiting portions 105 are symmetrically arranged on the adjacent sides of the barrel body 1 and the side plate 102. The inner side of the semi-closed space 103 can accommodate the fastener 6. Both bottom edges of the fastener 6 are restricted by the double limiting portions 105. The excess part of the garbage bag 2 after covering the top of the barrel body 1 is restricted at the semi-closed space 103 by the fastener 6.

[0068] In this embodiment: There can be several arc-shaped fasteners 6. Just drive the excess part of the garbage bag 2 with the fastener 6 and directly insert it into the semi-closed space 103. In order to maintain better stability after the fastener 6 is inserted into the inner side of the semi-closed space 103, the two side edges at the bottom of the fastener 6 can be in contact with the surfaces of the side plate 102 and the barrel body 1 respectively, and the bottom of the fastener 6 is in contact with the top inclined surface of the double limiting portion 105. In order to further improve the stability after the fastener 6 is inserted into the inner side of the semi-closed space 103, the top of the fastener 6 can also be in contact with the bottom surface of the top plate 101 with the garbage bag 2 in between;

[0069] In order to make the fastener 6 easy to pull out, the bottom edge of the fastener 6 and the top of the double limiting portion 105 can be inclined. Taking the Figure 5 cross-section as an example, the two inclined surfaces where the two bottom edges of the fastener 6 are in contact with the double limiting portion 105 should intersect at a position below the semi-closed space 103 (asFigure 5 the position indicated by the dashed line in the figure);

[0070] Furthermore, in order to enable the fastener 6 to be easily disassembled for facilitating the replacement of the garbage bag 2, a handle 601 is fixedly connected to the lower surface of the top of the fastener 6. One or several handles 601 can be installed on each fastener 6, which is set according to the length requirement of the fastener 6.

[0071] The seventh embodiment:

[0072] As Figure 6 shown, it further includes a first magnet 7 fixedly arranged relative to the barrel body 1. The first magnet 7 and the second magnet 8 are magnetically adsorbed, and the redundant part of the garbage bag 2 after covering the top of the barrel body 1 is clamped and restricted in position by the first magnet 7 and the second magnet 8.

[0073] In this embodiment: through the magnetic adsorption between the first magnet 7 and the second magnet 8, the redundant part of the garbage bag 2 after covering the top of the barrel body 1 can be clamped and fixed, so as to limit and fix the redundant part of the garbage bag 2. The first magnet 7 and the second magnet 8 can be of any shape.

[0074] The eighth embodiment: The second magnet 8 is fixed by a magnet bracket 801.

[0075] In this embodiment: The first magnet 7 and the second magnet 8 can be of any shape, such as arc-shaped, rectangular, circular or special-shaped, as long as the garbage bag 2 can be clamped and limited by the magnetic force between the first magnet 7 and the second magnet 8. When there are several second magnets 8, in order to facilitate the movement of the second magnet 8 and enable multiple second magnets 8 to be quickly separated from the first magnet 7, the magnet bracket 801 can drive multiple second magnets 8 to move together. Of course, there can also be multiple magnet brackets 801, preferably two. At the same time, the number of the magnet brackets 801 should be greater than or equal to the number of the second magnets 8;

[0076] In order to facilitate the disassembly of the magnet bracket 801, a downward folding edge 802 can be provided on the magnet bracket 801, and by pulling the folding edge 802, the magnet bracket 801 can be taken out downward.

[0077] The ninth embodiment:

[0078] As Figure 7 shown, a through hole 108 is provided at the position of the top plate 101. A negative pressure device 9 is installed at the bottom of the top plate 101. The negative pressure generating end of the negative pressure device 9 is communicated with the through hole 108, and the redundant part of the garbage bag 2 after covering the top of the barrel body 1 is adsorbed by the negative pressure in the through hole 108.

[0079] In this embodiment: after the garbage bag 2 is placed inside the garbage bin, the excess part of the garbage bag 2 covers the outer surface of the top plate 101, and then the negative pressure device 9 is started. After the negative pressure device 9 is started, the air inside the through hole 108 is extracted, so that the through hole 108 generates negative air pressure, thereby fixing the garbage bag 2 on the outer surface of the top plate 101;

[0080] The negative pressure device 9 can be a manual vacuum suction cup or an electric vacuum suction cup.

[0081] Tenth embodiment:

[0082] like Figure 8 As shown, a large restraining member 11 is detachably fixed to the outer side of the side plate 102 , and after the top of the garbage bag 2 covers the top of the barrel body 1 , the excess portion is clamped and fixed by the inner wall of the large restraining member 11 and the outer wall of the side plate 102 .

[0083] In this embodiment: the cross section of the large restraint 11 is U-shaped. When the large restraint 11 is a closed ring, the method of use is as follows: first, the barrel body 1 and the large restraint 11 need to be placed on the ground, so that the large restraint 11 is sleeved on the outside of the barrel body 1 without contact, and then the garbage bag 2 is sleeved on the inside of the garbage can, so that the excess part of the garbage bag 2 is as close to the outer surface of the barrel body 1 as possible, and then the large restraint 11 is moved upward. Since the excess part of the garbage bag 2 is relatively close to the barrel body 1 at this time, when the interlayer of the large restraint 11 is fixed with the outer surface of the side plate 102, the large restraint 11 will inevitably clamp and fix the excess part of the garbage bag 2 on the bottom outer side of the side plate 102;

[0084] The large restraint 11 has two annular side surfaces and a bottom surface, and the gap between the two annular side surfaces can cooperate with the side panel 102, so that the large restraint 11 can be fixedly installed on the outside of the side panel 102 while the excess part of the garbage bag 2 can be clamped and fixed between the large restraint 11 and the side panel 102.

[0085] When the large restraining member 11 is a non-closed ring with an opening at one end, the method of use is as follows: after the garbage bag 2 is placed inside the garbage can, the large restraining member 11 can be moved from top to bottom, and an external force can be applied to the large restraining member 11 by hand to increase its diameter, so that the large restraining member 11 can directly pass over the side plate 102 and move downward. After the large restraining member 11 moves downward and passes over the side plate 102, stop applying external force to the large restraining member 11, and the large restraining member 11 will return to its original diameter due to its own elastic force. At this time, the diameter of the large restraining member 11 should be able to enable the gap between the two annular side surfaces of the large restraining member 11 to cooperate with the side plate 102 when the large restraining member 11 is moved directly upward, so that the large restraining member 11 can be fixedly installed on the outside of the side plate 102, and the excess part of the garbage bag 2 can be clamped and fixed between the large restraining member 11 and the side plate 102;

[0086] The mating relationship can be a clamping and fastening relationship, that is, through the inner wall adjacent to the large restraint member 11 and the outer surface of the side plate 102, with the garbage bag 2 therebetween, they are tightly clamped and mated through friction;

[0087] It can also be a threaded mating relationship. Threads are provided on one side of the inner wall of the large restraint member 11 adjacent to the side plate 102, and the clearance between the threads needs to add the thickness of the garbage bag 2;

[0088] It can also be a snap-fit relationship. The following structure is provided between the outer side of the side plate 102 and the inner wall adjacent to the large restraint member 11:

[0089] 1. Such as a snap and slot structure: This is a common snap-fit method (such as milk tea lids, disposable plastic cup lids). One component has a protruding snap, and the other component has a corresponding slot. The snap is inserted into the slot to achieve snap-fitting;

[0090] 2. A wedge-shaped snap-fit structure: The gap between the two annular sides of the large restraint member 11 is narrower at the top and wider at the bottom, and the cross-section of the side plate 102 is narrower at the top and wider at the bottom. The pressure is generated by the inclined surface of the wedge-shaped component to achieve snap-fitting. During the process of the cooperation between the side plate 102 and the large restraint member 11, the wedge-shaped fit is achieved through the self-elasticity of the large restraint member 11.

[0091] The eleventh embodiment:

[0092] As Figure 8 and Figure 9 shown, a small restraint member 12 is detachably fixed to the outer side of the side plate 102, and the excess part of the garbage bag 2 after covering the top of the barrel body 1 is clamped and fixed between the inner wall of the small restraint member 12 and the outer wall of the side plate 102.

[0093] In this embodiment: The cross-section of the small restraint member 12 is U-shaped. The small restraint member 12 can be fixedly installed in cooperation with the outside of the side plate 102. After the garbage bag 2 is sleeved inside the trash can, the excess part of the garbage bag 2 is limited through the cooperation relationship between the small restraint member 12 and the side plate 102, that is, the excess part of the garbage bag 2 is limited and fixed at the position between the small restraint member 12 and the side plate 102.

[0094] The fixed installation in cooperation can be a snap-fit relationship or a clamping and fastening relationship, that is, through the inner wall adjacent to the small restraint member 12 and the outer surface of the side plate 102, with the garbage bag 2 therebetween, they are tightly clamped and mated through friction;

[0095] The twelfth embodiment:

[0096] As Figure 10 shown, a limiting groove 106 is provided on the outer side of the side plate 102, and an elastic member 13 is snap-fitted inside the limiting groove 106. The excess part of the garbage bag 2 after covering the top of the barrel body 1 is restricted between the elastic member 13 and the limiting groove 106.

[0097] In this embodiment: After the garbage bag 2 is sleeved inside the trash can, the elastic member 13 fixes the redundant part of the garbage bag 2 between the limit grooves 106 through the elasticity of the elastic member 13. After the elastic member 13 fixes the garbage bag 2, it does not protrude significantly from the side plate 102, thus having an aesthetic effect.

[0098] The thirteenth embodiment:

[0099] As Figure 11 shown, an outer limit portion 107 is fixedly provided on the outer end surface of the side plate 102. The fixing member 14 is sleeved on the outside of the side plate 102. The redundant part of the garbage bag 2 after covering the top of the barrel body 1 is restricted between the fixing member 14 and the side plate 102.

[0100] In this embodiment: By moving the fixing member 14 downward along the outer surface of the side plate 102, the fixing member 14 can be installed on the outer surface of the side plate 102. Through the provided outer limit portion 107, it can be avoided that the fixing member 14 moves downward too much distance and separates from the side plate 102;

[0101] After the garbage bag 2 is sleeved inside the trash can, through the cooperation relationship between the fixing member 14 and the side plate 102, the redundant part of the garbage bag 2 can be tightly clamped and limited.

[0102] The fourteenth embodiment:

[0103] As Figures 12 - 14 shown, a through hole 108 is opened at the position of the top plate 101. A one-way sealing sheet 109 covers the bottom at the position of the through hole 108. One end of the one-way sealing sheet 109 can be fixed to one end of the bottom surface of the top plate 101 and rotate around the fixed point. A pressure ring 15 is provided at the top of the barrel body 1. The pressure ring 15 includes an inner ring 1501, a top surface 1502, and an outer ring 1503. The inner ring 1501 is in sliding contact with the inner wall of the top end of the barrel body 1. The outer ring 1503 is in sliding connection with the outer wall of the side plate 102. The height of the inner ring 1501 is greater than the height of the outer ring 1503. A plurality of through grooves 17 are opened on both the top surface 1502 and the outer ring 1503.

[0104] In this embodiment: First, the pressure ring 15 is installed on the top of the trash can (as Figure 13 and Figure 14As shown in the figure, a variable space 16 is formed at the gap between the pressing ring 15 and the top of the trash can. When the pressing ring 15 moves upward relative to the barrel body 1, the volume of the variable space 16 will increase. After the volume of the variable space 16 increases, it will cause the outside air to enter it. The outside air will flow through the through groove 17 towards the inside of the variable space 16, thereby generating a trace amount of air flow. Since the garbage bag 2 is generally very soft and thin, and the conventional way of putting on the garbage bag 2 will make the garbage bag 2 fit or approach around the pressing ring 15, making the garbage bag 2 closer to the position of the pressing ring 15, and even able to directly contact the pressing ring 15 over a large area. The trace amount of air flow will cause the garbage bag 2 to approach the through groove 17, thereby blocking the through groove 17 with the garbage bag 2, and further making the variable space 16 in a sealed state. Continuing to move the pressing ring 15 upward, when the variable space 16 is in a sealed state and the pressing ring 15 is continuously moved, it causes the volume of the variable space 16 to continue to increase. However, at this time, the variable space 16 is in a sealed state, so that the gas pressure inside the variable space 16 is reduced, forming a negative pressure. Moreover, at this time, the one-way sealing piece 109 will also be affected by the negative pressure and tightly block the through hole 108. When the pressing ring 15 moves upward until the outer ring 1503 is separated from and does not contact the side plate 102, as Figure 14 shown in the figure, at this time, a gap will appear when the outer ring 1503 is separated from the side plate 102. Affected by the negative pressure of the air inside the variable space 16, the outside air will immediately enter the inside of the variable space 16 through the gap between the outer ring 1503 and the side plate 102. Since the excess part of the garbage bag 2 was originally close to the outer surface of the outer ring 1503 due to the influence of the through groove 17, the garbage bag 2 located below the outer ring 1503 will also be very close to the gap between the outer ring 1503 and the side plate 102. Affected by the air flow, a part of the excess of the garbage bag 2 will immediately enter the inside of the variable space 16. Then, move the pressing ring 15 downward to make the pressing ring 15 snap-fitted and installed on the top of the trash can again, so that the outer ring 1503 and the side plate 102 clamp and fix the garbage bag 2. During the process of moving the pressing ring 15 downward, the gas inside the variable space 16 will push the one-way sealing piece 109 and discharge through the through hole 108, so as to realize lifting the pressing ring 15 upward by a small distance and then returning to its original position downward, which can fix and limit the excess part of the garbage bag 2. The operation is simple and the use effect is good;

[0105] It should be noted that the height of the inner ring 1501 is greater than the height of the outer ring 1503, which can realize that when the outer ring 1503 is separated from the side plate 102, the inner ring 1501 can still be in sliding contact with the inner wall of the top end of the barrel body 1, and can ensure that the pressing ring 15 as a whole maintains a sliding connection relationship with the barrel body 1;

[0106] It should also be noted that one end of the one-way sealing piece 109 can be fixed to the bottom of the top plate 101 by gluing, so that the one-way sealing piece 109 can rotate around the glued part to realize the opening and closing rotation of the one-way sealing piece 109.

[0107] Fifteenth Embodiment:

[0108] Friction parts 18 are installed at the parts where the inner ring 1501, the outer ring 1503 are in contact with the side plate 102 and the top of the barrel body 1.

[0109] In this embodiment: Since the barrel body 1 and the pressing ring 15 are generally made of plastic, friction parts 18 are fixedly installed at the parts where the inner ring 1501, the outer ring 1503 are in contact with the side plate 102 and the top of the barrel body 1. When the pressing ring 15 moves upward relative to the barrel body 1, the friction parts 18 can move relative to the pressing ring 15 or the top of the barrel body 1. The friction generated by the relative movement of the friction parts 18 and the plastic will generate static electricity. Moreover, the garbage bag 2 is thin and light, and small and light objects are often electrically neutral. However, under the action of the electric field of the charged body, the internal charge distribution is uneven, resulting in the appearance of opposite charges at one end close to the charged body, thus generating an attracting effect. That is to say, by setting the friction parts 18, when the pressing ring 15 moves upward relative to the barrel body 1, the generated static electricity can make the garbage bag 2 fit more closely to the outer surface of the pressing ring 15, further improving the adsorption effect of the garbage bag 2 by the through groove 17. In a shorter time, the garbage bag 2 can be adsorbed by the air flow generated at the through groove 17 and block the through groove 17. Not only that, by setting the friction parts 18, the sliding sealing performance between the pressing ring 15 and the barrel body 1 can also be improved;

[0110] It should be understood that when describing the barrel body 1, if the top plate 101 and / or the side plate 102 are involved in the embodiment, when referring to the barrel body 1, the top plate 101 and the side plate 102 should belong to a part of the barrel body 1.

[0111] It should also be understood that the trash can and the barrel body 1 are mentioned many times above. On the premise of referring to the accompanying drawings of the specification, it should be understood as the description of the same object.

[0112] In an alternative embodiment, the fixing structure is a fastening connection structure.

[0113] In this embodiment: The clamping structure and the engaging structure can be collectively referred to as the fastening connection structure.

[0114] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pollution prevention structure for a trash can, comprising a barrel body (1), characterized in that: A hidden fixing structure is provided on the barrel body (1) to fix the garbage bag (2) without the need to manually pull or fold the garbage bag (2) inward. After the garbage bag (2) is sleeved inside the barrel body (1), the top surface of the garbage bag (2) can be in direct contact with the outside world.

2. The anti-pollution structure of the trash can according to claim 1, wherein: The fixing structure is a fastening connection structure.

3. The anti-pollution structure of the trash can according to claim 1 or 2, characterized in that: A top plate (101) is fixedly connected to the edge of the top opening of the barrel body (1), and the fixing structure is arranged at a position other than the top plate (101) of the top plate (101).

4. The anti-pollution structure of the trash can according to claim 1 or 2, characterized in that: A top plate (101) is fixedly connected to the edge of the top opening of the barrel body (1), and a side plate (102) is fixedly connected to the outer edge of the top plate (101). A semi-closed space (103) with an opening downward is formed between the barrel body (1), the top plate (101) and the side plate (102), and the fixing structure is arranged at an inner position of the semi-closed space (103).

5. The anti-pollution structure of the trash can according to claim 4, characterized in that: A mating portion (3) capable of mating with a mating member (4) with elastic inward movement is arranged on the outer side of one end of the barrel body (1). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is restricted at the mating portion (3) by the mating member (4).

6. The anti-pollution structure of the trash can according to claim 4, characterized in that: A single limiting portion (104) extending towards the semi-closed space (103) is arranged at the bottom of the side plate (102). The portion between the single limiting portion (104) and the top plate (101) can cooperate with a limiting member (5) with elastic outward movement. The excess part of the garbage bag (2) after covering the top of the barrel body (1) is restricted at the inner wall of the side plate (102) by the limiting member (5).

7. The anti-pollution structure of the trash can according to claim 4, characterized in that: Double limiting portions (105) are symmetrically arranged on both sides of the barrel body (1) adjacent to the side plate (102). A fastener (6) can be accommodated inside the semi-closed space (103). Both bottom edges of the fastener (6) are restricted by the double limiting portions (105). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is restricted at the semi-closed space (103) by the fastener (6).

8. The anti-pollution structure of the trash can according to claim 1 or 2, characterized in that: It further includes a first magnet (7) fixedly arranged relative to the barrel body (1). The first magnet (7) is magnetically adsorbed to the second magnet (8). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is clamped and restricted in position by the first magnet (7) and the second magnet (8).

9. The anti-pollution structure of the trash can according to claim 4, characterized in that: A large restraint member (11) is detachably fixed to the outer side of the side plate (102). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is clamped and fixed between the inner wall of the large restraint member (11) and the outer wall of the side plate (102).

10. The anti-pollution structure of the trash can according to claim 4, characterized in that: A small restraint member (12) is detachably fixed to the outer side of the side plate (102). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is clamped and fixed between the inner wall of the small restraint member (12) and the outer wall of the side plate (102).

11. The anti-pollution structure of the trash can according to claim 4, characterized in that: A limiting groove (106) is arranged on the outer side of the side plate (102), and an elastic member (13) is engaged inside the limiting groove (106). The excess part of the garbage bag (2) after covering the top of the barrel body (1) is restricted between the elastic member (13) and the limiting groove (106).

12. The anti-pollution structure of the trash can according to claim 4, characterized in that: An outer limiting part (107) is fixedly arranged on the outer end face of the side plate (102), the fixing member (14) is sleeved outside the side plate (102), and the excess part of the top of the garbage bag (2) after covering the top of the barrel body (1) is limited between the fixing member (14) and the side plate (102).

13. The anti-pollution structure of the trash can according to claim 4, characterized in that: A through hole (108) is formed at the position of the top plate (101), a one-way sealing piece (109) covers the bottom at the position of the through hole (108), one end of the one-way sealing piece (109) can be fixed to one end of the bottom surface of the top plate (101) and rotate around the fixed point, a pressing ring (15) is arranged at the top of the barrel body (1), the pressing ring (15) includes an inner ring (1501), a top surface (1502) and an outer ring (1503), the inner ring (1501) is in sliding contact with the inner wall of the top end of the barrel body (1), the outer ring (1503) is in sliding connection with the outer wall of the side plate (102), the height of the inner ring (1501) is greater than the height of the outer ring (1503), and a plurality of through grooves (17) are formed in both the top surface (1502) and the outer ring (1503).

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