Bucket cover easy to pull open and good in sealing performance and bucket

Abstract

The utility model discloses a bucket cover easy to pull open and good in sealing performance and a bucket. The bucket cover comprises a cover body, a first convex ring and a sealing piece. The sealing piece comprises a second convex ring and an inverted cone located on the lower portion of the second convex ring. The sealing piece is provided with the inverted cone of the hollow structure, the inverted cone provides a space for inward folding deformation, and the annular drawing mark can be torn off with smaller force. Meanwhile, large water pressure in the barrel can be diffused and divided towards the peripheral conical surface of the inverted cone through the inverted cone and cannot be concentrated on the sealing piece, so that the annular drawing mark is not prone to breakage, and the sealing piece is prevented from leaking water easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to the packaging technical field especially, relates to an easy to open and good sealing water bucket cover and the water bucket with the water bucket cover. BACKGROUND

[0002] The current market has the bottle cap or the bucket cover with the pull ring, and the structure generally includes the cover body and the pull ring, the middle part of the cover body is formed with the opening downwards, the inner wall of the opening extends a circle of the connecting table in the ring shape, the inner side of the connecting table is equipped with the sealing sheet, the sealing sheet is fixed with the connecting table through the tear mark, and the tear mark can be understood as the thin wall structure, the pull ring and the sealing sheet are the integral molding structure. When using, the pull ring is pulled upwards to make the tear mark break, and the sealing sheet is separated from the connecting table of the cover body. The cover body of this kind is horizontally arranged with the sealing sheet and the connecting table of the cover body, the width and the thickness of the tear mark are relatively large, so that a lot of strength is needed in the tearing process, and if the production precision is not high, the pull ring may be broken, and the sealing sheet and the connecting table cannot be separated.

[0003] In the prior art, the bottle cap structure generally includes an upper bottle cap and a lower bottle cap, the lower bottle cap includes a tubular cover body and a connecting table fixed in the cover body, the lower end of the upper bottle cap is threadedly connected with the upper end of the cover body, a through hole is formed in the middle of the connecting table, a sealing tear sheet is arranged in the through hole, the sealing tear sheet is connected with a tear ring through an annular tear mark between the sealing tear sheet and the periphery of the through hole. When the bottle cap needs to be opened, a large pulling force is required to pull the tear ring with fingers, and the sealing tear sheet cannot be torn off, and the tear ring may be broken due to excessive force. These problems will cause inconvenience in the operation of the bottle cap. Therefore, the annular tear mark of the sealing tear sheet is designed to be relatively thin, so that the sealing tear sheet can be easily torn off. However, due to the relatively thin thickness of the annular tear mark, some collisions are inevitable during the transportation of the water bucket, and the water pressure in the water bucket will inevitably act on the sealing tear sheet, so that the annular tear mark is easily crushed, and the sealing effect of the sealing tear sheet is lost. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems that the previous water bucket cover is inconvenient to use and the sealing tear sheet is difficult to tear off, and provides a water bucket cover that is easy to open and has good sealing performance. The utility model also provides a water bucket with the water bucket cover.

[0005] To solve the above technical problems, the utility model discloses an easy to open and good sealing water bucket cover, including the cover body with the accommodation cavity, the middle part of the cover body is recessed and forms the through -hole, the through -hole the accommodation cavity, the hole wall of the through -hole extends the first convex ring to the inside, the inner peripheral surface of the first convex ring is surrounded and forms the water outlet, the first convex ring is sealedly connected with the sealing sheet, the sealing sheet seals the water outlet,

[0006] The sealing sheet includes a second convex ring and a reverse cone located at the lower part of the second convex ring, the reverse cone is a hollow structure, the inner wall of the reverse cone is sealedly connected with the inner wall of the second convex ring, and the top of the reverse cone extends downward and passes through the water outlet.

[0007] The outer wall and / or top of the second convex ring are sealedly connected with the inner wall and / or bottom of the first convex ring through the annular pull mark.

[0008] The through -hole is provided with the pull ring inclinedly arranged, and the pull ring is connected with the second convex ring.

[0009] The area ratio of the second convex ring to the bottom area of the reverse cone is 1:5 to 1:8.

[0010] The taper of the reverse cone is 30 to 60 degrees.

[0011] In the vertical direction, the second convex ring and the first convex ring are arranged in the up and down staggered mode, and the top of the second convex ring is higher than the top of the first convex ring, and the thickness of the annular pull mark is less than the thickness of the first convex ring and / or the second convex ring.

[0012] The width of the annular pull mark is a, and 0.1mm >= a >= 0mm.

[0013] The thickness of the annular pull mark is b, and 0.4mm >= b >= 0.1mm.

[0014] The thickness of the second convex ring is equal to the thickness of the reverse cone and is integrally injection molded.

[0015] The pull ring is an inclined upwardly arranged pull ring, the fixed end of the pull ring extends the connecting rib towards the second convex ring, the connecting rib is connected with the second convex ring, and the free end of the pull ring extends the reinforcing part downwardly.

[0016] The second convex ring and the first convex ring are arranged in the up and down staggered mode in the vertical direction, and in the vertical direction, the second convex ring and the first convex ring partially coincide.

[0017] The application also provides a water bucket comprising the above water bucket cover.

[0018] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0019] (1) The inverted cone of the hollow structure of the sealing sheet has a space and tendency to fold or deform in the middle when the pull ring is pulled upward, which can be understood as the outward tension of the inverted cone being smaller than that of the existing flat sealing sheet, and a space for folding and deforming inward is provided, so that the annular pull mark can be torn open with smaller force, that is, the sealing sheet can be separated from the cover with smaller force, and the pulling force of the pull ring is further reduced; in addition, the moment the tip of the inverted cone touches the water, the large water pressure in the bucket is diffused and divided to the surrounding conical surface of the inverted cone, and will not be concentrated on the sealing sheet, and because the pressure acting on the surrounding conical surface of the inverted cone is horizontally divided, the horizontal divided pressure will cancel each other out, and will not squeeze the inverted cone to deform inward, and will not tear the annular pull mark, so that only the vertical divided pressure acts on the inverted cone, and therefore the pressure acting on the inverted cone is greatly reduced, and in combination with the downward protrusion of the inverted cone, the inverted cone is not easy to deform upward when the upward water pressure acts on the inverted cone, which also enables the inverted cone to withstand greater liquid pressure in the bucket, and enables the annular pull mark to withstand greater liquid pressure in the bucket, so that the annular pull mark is not easy to break, and the sealing sheet is prevented from leaking water easily.

[0020] (2) The water bucket adopting the water bucket cover of the application is more convenient and labor-saving in the opening process, simple and convenient to operate, and has good sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0022] Figure 1 is a structure schematic view of the water bucket cover in the embodiment;

[0023] Figure 2 is a sectional view of the water bucket cover in the embodiment;

[0024] Figure 3 is a structure schematic view of the second convex ring and the first convex ring being staggered in the vertical direction in the embodiment;

[0025] Figure 4 is a structure schematic view of the second convex ring and the first convex ring being staggered in the vertical direction in some embodiments;

[0026] Figure 5 is a structure diagram of the second convex ring being staggered with the first convex ring in the vertical direction and the horizontal direction in some embodiments;

[0027] Figure 6 is a structure diagram of the second convex ring being staggered with the first convex ring in the vertical direction and the horizontal direction in some embodiments. DETAILED DESCRIPTION

[0028] In order to enable personnel in the technical field to better understand the scheme of the utility model, the technical scheme in the utility model embodiments will be clearly and completely described below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] The terms "first", "second", and the like in the description and claims of the utility model and the above drawings are used to distinguish different objects, but are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally also includes other steps or units inherent to the process, method, product or end.

[0030] In this document, reference to "embodiment" means that the particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a particular embodiment that is "preferred" over other embodiments. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0031] The utility model discloses a kind of easily open and the specific implementation of good sealing bucket cover, please see Figures 1 to 2The bucket lid includes a lid body 1 and a sealing plate 2. A through hole 12 is formed in the center of the lid body 1 along its height direction. A first annular protrusion 11 extends inward from the bottom of the through hole 12. The sealing plate 2 connects to the first protrusion 11, thereby sealing the through hole 12. A pull ring 4 is provided above the sealing plate 2, inclined upward relative to the first protrusion 11, and located within the through hole 12. A connecting rib 41 extends from the fixed end of the pull ring 4 towards the sealing plate 2, and the connecting rib 41 is integrally formed with the sealing plate 2. A reinforcing part 42 extends downward from the free end of the pull ring 4. By providing the reinforcing part 42, the structural strength of the pull ring 4 is increased, making it less prone to breakage. Furthermore, the contact area between the finger and the free end of the pull ring 4 is increased, preventing finger injury or pain, and making the pulling process more convenient and effortless. Optionally, the shape of the reinforcing part 42 can be one of a fan shape, a triangle, a rectangle, or a polygon.

[0032] In this embodiment, the diameter of the through hole 12 gradually decreases from the top to the middle, so that the upper part of the through hole 12 forms an outwardly inclined slope, that is, the upper part of the through hole 12 is flared. The free end of the pull ring 4 is located in the upper part of the through hole 12, which facilitates the insertion of a finger into the pull ring 4 and pulling it upward at an angle. The flared upper part of the through hole 12 provides sufficient space for the displacement of the pull ring 4. The diameter of the through hole 12 in the middle is equal to the diameter of the through hole 12 at the bottom. This structure can play a guiding role, so that when the water bucket is installed into a water dispenser or other water pumping equipment, the inlet pipe of the water dispenser or other water pumping equipment can be smoothly inserted into the through hole 12, thereby making the installation of the water bucket more convenient and quick, and the operation simpler.

[0033] In this embodiment, see Figure 2 As shown, the middle part of the first convex ring 11 is a water outlet. The outer peripheral surface of the sealing plate 2 is sealed to the inner peripheral surface of the first convex ring 11, thereby sealing the water outlet. The sealing plate 2 includes a second convex ring 21 and an inverted cone 22 located within the second convex ring 21. The inverted cone 22 extends downward and protrudes from the water outlet. The outer peripheral edge of the inverted cone 22 is connected to the inner peripheral edge of the second convex ring 21. In this embodiment, to enhance the structural strength of the sealing plate 2 and facilitate its molding, the inverted cone 22 is integrally formed with the second convex ring 21.

[0034] The bottom of the outer circumferential surface of the second protruding ring 21 is sealed to the top of the inner circumferential surface of the first protruding ring 11 through an annular scratch 3, so that the bottom surface of the second protruding ring 21 is higher than the bottom surface of the first protruding ring 11 in the vertical direction, and the top surface of the second protruding ring 21 is higher than the top surface of the first protruding ring 11 in the vertical direction. That is, the second protruding ring 21 and the first protruding ring 11 are vertically offset, so that an annular scratch 3 with a relatively thin thickness is automatically formed at the connection between the second protruding ring 21 and the first protruding ring 11. Because the second protruding ring 21 and the first protruding ring 11 are vertically offset, there is no need to deliberately set a thinning area or cut and process it into a thinning area to form an annular scratch 3; the vertical offset setting can automatically form a thin annular scratch 3. The annular tear mark 3 of this application has strong structural strength and can withstand the large impact pressure from the water inside the bucket, ensuring the sealing of the annular tear mark 3 and preventing water leakage. In addition, because the second convex ring 21 and the first convex ring 11 are vertically offset, when the second convex ring 21 is pulled upward, only a small shearing force is needed between the second convex ring 21 and the first convex ring 11 to tear the annular tear mark 3. That is, a very small pulling force is needed to pull the pull ring 4 obliquely upward to tear the annular tear mark 3. This makes the annular tear mark 3 inside the bucket lid easy to tear while also having strong sealing structural strength, and able to withstand the large impact pressure from the water inside the bucket without breaking.

[0035] Furthermore, such as Figure 3 As shown, the width of the annular tear mark 3 is 'a', 0.1mm ≥ a ≥ 0mm. This width can be understood as the horizontal distance between the inner surface of the first protruding ring 11 and the outer surface of the second protruding platform 21. The thickness of the annular tear mark 3 is 'b', 0.4mm ≥ b ≥ 0.1mm. This thickness can be understood as the vertical distance between the top surface of the first protruding ring 11 and the bottom surface of the second protruding ring 21. Within the above design parameter range, in order to ensure that the annular tear mark 3 has sufficient structural strength to achieve sealing performance, while minimizing the force required to tear the annular tear mark 3, when the width of the annular tear mark 3 is designed to be a smaller value, its thickness needs to be designed to be a larger value, and when the width of the annular tear mark 3 is designed to be a larger value, its thickness needs to be designed to be a smaller value, thereby achieving a balance between sealing performance and tearability. Preferably, when the width of the annular tear mark 3 is 0.05 mm and the thickness of the annular tear mark 3 is 0.3 mm, the annular tear mark 3 achieves the best balance between sealing and tearability.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, the second convex ring 21 and the first convex ring 11 are vertically offset and partially overlap in the vertical direction. The thickness of the annular scratch 3 is the height of the vertical overlap. Wherein, in Figure 3In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane. Figure 4 In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0037] In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane. Figure 5 and Figure 6 In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0038] In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0039] In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0040] In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane. Figure 5 In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0041] In some embodiments, as shown in FIG. 1, the width of the annular tear notch 3 is the horizontal distance between the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21. In some embodiments, as shown in FIG. 2, the width of the annular tear notch 3 is 0, i.e. the inner annular surface of the first protruding ring 11 and the outer annular surface of the second protruding ring 21 are in the same vertical plane.

[0042] It should be noted that the sealing sheet 2, the annular scratch 3, the pull ring 4, and the cover 1 can be an integrally formed structure. In other embodiments, the sealing sheet 2 can also be fixed to the cover 1 by ultrasonic welding or other methods.

[0043] In this embodiment, see Figure 2 As shown, the inverted cone 22 has a hollow structure, providing deformation space for the sealing sheet 2 to be torn apart when needed, thus facilitating the tearing of the sealing sheet 2. The inverted cone 22 and the second convex ring 21 have the same thickness, which facilitates injection molding. Of course, in some embodiments, the thicknesses of the inverted cone 22 and the second convex ring 21 may be different.

[0044] The apex of the inverted cone 22 extends downward through the water outlet of the first convex ring 11. The apex of the inverted cone 22 cannot extend to the plane where the bottom surface of the cover 1 is located. That is, the apex of the inverted cone 22 must be located inside the cavity of the cover 1 to protect the apex of the inverted cone 22.

[0045] In the application, the inverted cone 22 with hollow structure in the middle of the sealing sheet 2 has one of the functions to facilitate the uniformity of the glue flow during the injection molding of the entire bottle cap, because the sealing sheet 2, the annular pull mark 3, the pull ring 4 and the cap body 1 are integrally injection molded, and the glue injection point is on the top point of the inverted cone 22. The second function is that when the pull ring 4 is pulled upward, the pull ring 4 drives the second convex ring 21 to deform, so as to tear the annular pull mark 3, because the inverted cone 22 has the space and tendency to fold or deform inward, it can be understood that the outward tension of the inverted cone 22 in the application is smaller than that of the existing flat sealing sheet, and the space for folding and deforming inward is provided, so that the annular pull mark 3 can be easily torn with smaller force. Combined with the vertical up-and-down staggered arrangement of the second convex ring 21 and the first convex ring 11, the annular pull mark 3 formed only needs a small shear force to be easily torn, the design of the inverted cone 22 further improves the technical effect of easy separation of the sealing sheet 2 and the cap body 1, that is, further reduces the force of the pull ring 4 to pull open the sealing sheet 2. The third function is that when the water in the bucket shakes, for the existing flat sealing sheet, the water pressure will act on the flat sealing sheet, and the flat sealing sheet will be torn due to the relatively weak pull mark under the pressure, and then the flat sealing sheet will leak. The inverted cone 22 of the application can diffuse and distribute the large water pressure to the surrounding cone surface of the inverted cone 22 at the moment when the cone top of the inverted cone 22 touches the water, and will not concentrate on the sealing sheet 2, and because the pressure acting on the surrounding cone surface of the inverted cone 22 will cancel each other out in the horizontal direction, it will not deform inwardly, and then it will not tear the annular pull mark 3, only the vertical pressure acts on the inverted cone 22, therefore, the pressure acting on the inverted cone 22 is greatly reduced, and combined with the downward protrusion of the inverted cone 22, when the upward water pressure acts on the inverted cone 22, the inverted cone 22 is not easy to deform upward, which also makes the inverted cone 22 can withstand larger liquid pressure in the bucket, and then the annular pull mark 3 can withstand larger liquid pressure in the bucket, even if a larger water pressure is generated when the water bucket shakes or collides, the annular pull mark 3 will not be torn, so that the annular pull mark is not easy to break, and the sealing sheet 2 is prevented from leaking easily.

[0046] Further, on the sealing sheet 2, the ratio of the bottom area of the second convex ring 21 to the second convex ring 21 is 1:5 to 1:8, so that the sealing sheet 2 can withstand the larger water pressure in the barrel without leaking, and can be opened with smaller force, and the sealing sheet 2 can also realize easy opening and good sealing. In addition, the second convex ring 21 can realize the shear force between the second convex ring 21 and the first convex ring 11 in two vertical planes, so that only a small force is required to act on the second convex ring 21 when pulling the pull ring 4 to tear the annular pull mark 3, and the large area of the inwardly deformable inverted cone 22 makes the second convex ring 21 easy to separate from the first convex ring 11. The larger the bottom area of the inverted cone 22, the smaller the pressure of the sealing sheet 2 in the barrel, but considering the easy tearing of the sealing sheet 2, the second convex ring 21 needs to be set in cooperation with the inverted cone 22.

[0047] Further, the taper of the inverted cone 22 is 30 degrees to 60 degrees, and the taper top of the inverted cone 22 extends downward and as far away from the first convex ring 11 as possible. Of course, the smaller the taper of the inverted cone 22, the smaller the vertical pressure, that is, it can withstand greater water pressure in the barrel, but under the condition that the bottom area of the inverted cone 22 is constant, the smaller the taper, the higher the height, in order to ensure that the taper top of the inverted cone 22 is in the cavity in the cover, the taper of the inverted cone 22 is set to 45 degrees.

[0048] In the embodiment, the thickness of the second convex ring 21 and the thickness of the inverted cone 22 can be equal or not equal, and the thickness of the first convex ring 11 and the thickness of the second convex ring 21 can be equal or not equal, which can be selectively set according to actual needs.

[0049] The utility model discloses a kind of buckets, including the bucket cover described above, the bucket using the bucket cover of the embodiment, it is more convenient and labor-saving in opening process, easy to operate, with good sealing performance.

[0050] Finally, it should be noted that: the utility model embodiment discloses a kind of easy-to-open and good sealing bucket cover and bucket disclosed only for the preferred embodiment of the utility model, only for illustrating the technical scheme of the utility model, not for its limitation;Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand;It can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of technical features;And these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the utility model embodiments.

Claims

1. A bucket lid that is easy to open and has a good seal, characterized in that, The device includes a cover with a accommodating cavity, a through hole formed in the middle of the cover, the through hole being located inside the accommodating cavity, a first convex ring extending inward from the wall of the through hole, a water outlet formed around the inner circumferential surface of the first convex ring, and a sealing plate sealing the water outlet. The sealing sheet includes a second convex ring and an inverted cone located inside the second convex ring. The inverted cone is a cone with a hollow structure. The bottom surface of the inverted cone is sealed to the inner circumferential surface of the second convex ring. The top of the inverted cone extends downward and out of the water outlet. The outer circumferential surface and / or top surface of the second convex ring are sealed to the inner circumferential surface and / or bottom surface of the first convex ring through an annular pull mark. An inclined pull ring is provided inside the through hole, and the pull ring is connected to the second protruding ring.

2. The bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, The ratio of the area of ​​the second convex ring to the bottom area of ​​the inverted cone is 1:5 to 1:

8.

3. A bucket lid with easy opening and good sealing performance according to claim 1 or 2, characterized in that, The taper of the inverted cone is between 30 and 60 degrees.

4. The bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, In the vertical direction, the second convex ring is staggered from the first convex ring, and the top surface of the second convex ring is higher than the top surface of the first convex ring; the thickness of the annular scratch is less than the thickness of the first convex ring and / or the second convex ring.

5. A bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, The width of the annular scratch is a, where 0.1mm ≥ a ≥ 0mm.

6. A bucket lid with easy opening and good sealing performance according to claim 1 or 5, characterized in that, The thickness of the annular scratch is b, where 0.4mm ≥ b ≥ 0.1mm.

7. A bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, The thickness of the second convex ring is equal to the thickness of the inverted cone and they are integrally injection molded.

8. A bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, The pull ring is an upwardly inclined pull ring. The fixed end of the pull ring extends a connecting rib toward the second protruding ring. The connecting rib is connected to the second protruding ring. The free end of the pull ring extends downward to form a reinforcing part.

9. A bucket lid with easy opening and good sealing performance according to claim 1, characterized in that, The second convex ring is vertically offset from the first convex ring, and in the vertical direction, the second convex ring and the first convex ring partially overlap.

10. A water bucket, characterized in that, include: The bucket lid as described in any one of claims 1 to 9.

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