Drinking water bucket and disposable sealed bucket cover thereof

Abstract

The present invention discloses a disposable sealed barrel cover, which includes a cover body having a ring side wall and a top wall, a positioning tube located on the inner side of the top wall and integrally formed with the top wall, and a sealed inner cover connected to the positioning tube by secondary injection molding or ultrasonic welding. This new structural form of disposable drinking water barrel cover changes the structure of the traditional sealed inner cover and the positioning tube being molded in one piece, and sets the sealed inner cover and the positioning tube to be connected in one piece by secondary injection molding to form a sealed structure, which reduces the connection strength between the sealed inner cover and the positioning tube, making it easy to poke open the sealed inner cover, making it easy for the top rod of the water dispenser to poke through the barrel cover when changing water, avoiding a greater impact force from hitting the water dispenser, protecting the structure of the water dispenser, and extending the service life of the water dispenser. The present invention also discloses a drinking water barrel, which includes the above-mentioned disposable sealed barrel cover, which avoids impact and protects the water dispenser.

Description

Technical Field

[0001] The invention relates to the field of drinking water packaging, in particular to a drinking water barrel for bottled water, and a disposable sealed barrel cover. Background Art

[0002] At present, people generally use bottled water to provide drinking water in offices, public places and homes. Ordinary bottled water is between 18 liters and 20 liters, and there are also small barrels and large bottles of about 5 liters. These barrels of water or large bottles of canned water are generally placed upside down on the water dispenser. The top rod of the water dispenser pierces the barrel cover to form a water injection hole (top rod hole), and the drinking water in the barrel (bottle) is diverted into the water dispenser and then dispensed into kettles or cups. Since the hardness of the main body material in the barrel cover has certain requirements and is relatively tough, the connecting edge of the barrier sheet used for closed blocking is still difficult to penetrate and tear even if it is very thin, that is, the hardness and toughness of the one-piece one-time formed barrier sheet are relatively large, and it takes a large impact force to break it. Ordinary barreled water cannot penetrate the barrier sheet after being lifted up and put down naturally. It is necessary to increase the height and reserve a certain downward rush distance to facilitate penetration. After penetration, the water dispenser brake is often used to prevent the bucket from falling. Every time the water is changed, an impact is generated on the water dispenser, causing the top support cover of the water dispenser to be easily broken and damaged. People with less strength also need impact force to penetrate the barrier when changing to small barrels of drinking water and canned water. However, the small barrel of drinking water itself has a small gravity, so the external auxiliary impact force required is greater, and its barrier is more difficult to puncture. In addition to overcoming the effect of gravity, an external downward impact force is also required, which makes the operation inconvenient. Summary of the invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a disposable sealed barrel cover that can be easily pierced through when changing water to avoid collision and protect the water dispenser. At the same time, a drinking water barrel that can be easily pierced through when changing water to avoid collision and protect the water dispenser is provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a disposable sealed barrel cover, which includes a cover body with a ring side wall and a top wall, a positioning tube located on the inner side of the top wall and integrally formed with the top wall, and a sealed inner cover connected to the positioning tube by secondary injection molding or ultrasonic welding.

[0005] As an improvement to the technical solution of the disposable sealed barrel cover of the present invention, the secondary injection molding material is different from the cover body material.

[0006] As an improvement to the technical solution of the disposable sealed barrel cover of the present invention, the secondary injection molding material is an easily tearable soft glue.

[0007] As an improvement to the technical solution of the disposable sealed barrel cover of the present invention, an inner plug with a bottom surface abutting against the sealed inner cover is provided in the positioning tube, and the inner plug is snap-fitted or threadedly connected to the inner side surface of the positioning tube.

[0008] As an improvement on the technical solution of the disposable sealing barrel cover of the present invention, a snap ring is provided on the inner wall surface of the positioning tube, and a convex buckle is provided on the outer wall surface of the inner plug located on the lower side of the snap ring. The convex buckle is a discontinuously arranged convex point or a continuously extended convex ring. The inner plug is provided with a blocking ring to prevent the inner plug from sinking inward, and the cover body is provided with a step to cooperate with and support the blocking ring. The snap ring is arranged in sections and is staggered with the convex buckle. When the inner plug rotates, the snap ring and the convex buckle can be engaged with each other to prevent the inner plug from moving axially.

[0009] As an improvement to the technical solution of the disposable sealed barrel cover of the present invention, a pull ring or a pinching portion is provided on the side edge of the top of the inner plug.

[0010] As an improvement on the technical solution of the disposable sealed barrel cover of the present invention, the inner side of the positioning tube is provided with a circumferentially distributed inner wing with a wall thickness less than 0.5 times the wall thickness of the positioning tube, and the secondary injection molding material covers the inner wing to form the sealed inner cover.

[0011] As an improvement on the technical solution of the disposable sealed barrel cover of the present invention, the sealed inner cover includes a transversely arranged cover piece and a sealing edge formed by secondary injection molding to connect the cover piece and the positioning tube to form a sealing structure.

[0012] As an improvement on the technical solution of the disposable sealed barrel cover of the present invention, the cover plate is made of the same material as the positioning tube and is integrally formed. The side of the cover plate is provided with a connecting boss extending to the positioning tube, and the bottom surface of the cover plate is provided with a connecting convex strip extending to the positioning tube.

[0013] In order to solve the problems of the prior art, the technical solution of the drinking water bucket adopted by the present invention is: a drinking water bucket, which includes a barrel body and a disposable sealed barrel cover as described in any of the aforementioned technical solutions, the barrel body is provided with a barrel neck, and the upper end of the barrel neck has a barrel opening, and the annular side wall of the cover body is threadedly connected or tightly sleeved with the barrel neck so that the barrel cover closes the barrel opening.

[0014] The beneficial effects of the present invention are as follows: this new structural form of the disposable drinking water barrel cover changes the traditional structure of the sealed inner cover and the positioning tube being molded in one step by injection, and sets the sealed inner cover and the positioning tube to be connected as a whole through secondary injection molding to form a sealed structure, thereby reducing the connection strength between the sealed inner cover and the positioning tube, making it easy to poke open the sealed inner cover, making it easy for the top rod of the water dispenser to poke through the barrel cover when changing water, thereby avoiding a greater impact force from hitting the water dispenser, protecting the structure of the water dispenser, and extending the service life of the water dispenser.

[0015] When using the drinking water bucket with the disposable sealed bucket cover, the bucket cover can be easily punctured when changing water, thereby avoiding excessive impact force to hit the water dispenser, thereby better protecting the safety of the water dispenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The present invention is a schematic cross-sectional view of a disposable sealed barrel cover without an inner plug structure.

[0017] Figure 2 The present invention is a schematic cross-sectional view of a disposable sealed barrel cover with an inner plug structure.

[0018] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure of area A in the middle.

[0019] Figure 4 It is a schematic structural diagram of the sealed inner cover in the present invention.

[0020] Figure 5 It is a schematic cross-sectional view of the bottle cap structure without inner plug in the present invention.

[0021] Figure 6 It is a schematic cross-sectional view of the bottle cap structure with inner stopper in the present invention. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1 , Figure 5 As shown, the disposable sealed barrel cover of the present invention comprises a cover body 11 having a ring side wall 13 and a top wall 12, a positioning tube 15 located at the inner side of the top wall 12 and integrally formed with the top wall 12, and a sealed inner cover 16 connected to the positioning tube 15 by secondary injection molding or ultrasonic welding. This new structural form of disposable drinking water barrel cover changes the structure of the traditional sealed inner cover 16 and the positioning tube 15 being molded in one piece, and sets the sealed inner cover 16 and the positioning tube 15 to be connected to form a sealed structure by secondary injection molding or ultrasonic welding, thereby reducing the connection strength between the sealed inner cover 16 and the positioning tube 15, making it easy to poke open the sealed inner cover 16, making it easy for the top rod of the water dispenser to poke through the barrel cover when changing water, thereby avoiding a greater impact force from hitting the water dispenser, protecting the structure of the water dispenser, and extending the service life of the water dispenser. The secondary injection molding part can be a cover sheet body including a sealed inner cover 16 (here the cover sheet is the material of the secondary injection molding), or the cover sheet body has been molded in the first injection molding, and the sealing edge 19 structure formed by the secondary injection molding seals and connects the cover sheet body and the positioning tube 15 together (here the cover sheet is the material of the first injection molding). The ultrasonically welded sealed inner cover 16 can be a separately molded sheet body, which is positioned and welded with the positioning tube 15 to form a sealed connection structure, or it can be a sheet body that is molded by one injection molding with the cover body 11. The ultrasonically welded sealed inner cover 16 is generally made of the same material as the cover body 11 of the barrel cover, such as hard plastics such as PP, PC, and PE.

[0024] like Figure 5As shown, the barrel cover of the present invention also covers a bottle cap for a larger bottled water bottle that can be placed upside down in a water dispenser, such as a bottled water bottle of about 5 liters. The bottle cap of such a bottled water bottle is generally connected to the bottle cap by a thread, and the top of the bottle cap is provided with a one-time puncture structure like the barrel cap of the barreled water, so that it can be used in a water dispenser. The bottle cap needs to be provided with an anti-theft ring 18 on its lower side to prevent it from being unscrewed without being noticed.

[0025] Preferably, the secondary injection molding material is different from the cover material, so that the joint strength is relatively reduced, making it easier to pierce. If the secondary injection molding material is the same as the cover material, different molding parameters, such as molding pressure, need to be adjusted to achieve easy piercing and tearing of the joint position.

[0026] Preferably, the secondary injection molding material is an easily-tearable soft rubber, such as TPE or silicone. Compared with hard plastics such as PP, PC, PE, etc., soft rubbers such as TPE or silicone are easier to tear, thereby making the barrel cover easier to puncture, thereby avoiding the use of impact force to puncture the barrel cover when changing water, and avoiding impact on the water dispenser to protect the water dispenser.

[0027] More preferably, if Figure 2 , Figure 6 As shown, the positioning tube 15 is provided with an inner plug 21 whose bottom surface presses against the sealed inner cover 16. The inner plug 21 is snap-fitted or threadedly connected to the inner side surface of the positioning tube 15. The inner plug 21 can press against the sealed inner cover 16 to prevent the sealed inner cover 16 from excessively deviating upward (toward the top surface of the cover) and tearing. The inner plug 21 can also support the film on the top surface of the cover body and prevent the negative pressure in the barrel from generating inward adsorption pressure on the sealed inner cover 16 and tearing it, thereby better protecting the sealed inner cover.

[0028] Among them, Figure 2 , Figure 3 , Figure 6 As shown, the inner wall surface of the positioning tube 15 is provided with a snap ring 25, and the outer wall surface of the inner plug 21 is provided with a convex buckle 22 located at the lower side of the snap ring 25. The convex buckle 22 can be a discontinuously arranged convex point or a continuously extending convex ring. The inner plug 21 is provided with a blocking ring 23 to prevent the inner plug 21 from sinking inward, and the cover body 11 is provided with a step 26 to cooperate with the blocking ring 23 to lock the inner plug 21 in the positioning tube 15 to prevent it from axial movement, thereby protecting the sealed inner cover 16. The snap ring 25 can be arranged in sections and staggered with the convex buckle, and can be interlocked with each other after rotating a certain angle to prevent the inner plug 21 from axial movement.

[0029] More preferably, if Figure 2 As shown, a pull ring (not shown) or a gripping portion 28 is provided on the top side of the inner plug 21 to facilitate pulling out the inner plug.

[0030] More preferably, if Figure 2 , Figure 3 , Figure 6 As shown, the inner side of the positioning tube 15 is provided with a circumferentially distributed inner wing 31 whose wall thickness is less than 0.5 times of the wall thickness of the positioning tube. The secondary injection molding material covers the inner wing 31 to form the sealed inner cover 16, forming a secondary molding or even a combined molding structure of two different materials. The inner wing 31 increases the strength of the sealed inner cover 16, and when punctured, it is torn from the secondary injection molding glue (mainly soft glue) between the inner wing 31.

[0031] More preferably, if Figure 1 , Figure 4 , Figure 5 As shown, the sealed inner cover 16 includes a transversely arranged cover piece 33, and a sealing edge 19 formed by secondary injection molding to connect the cover piece 33 and the positioning tube to form a sealing structure, wherein the cover piece and the positioning tube 15 are integrally formed at one time, and the sealing edge is connected by secondary molding to form a sealing structure, thereby reducing the connection strength of the connection position so that it is easy to be torn. The secondary injection molding uses different materials, especially soft rubber materials, which are easier to be torn and punctured. At the same time, the cover piece can maintain the structural strength of the original barrel cover (bottle cap).

[0032] More preferably, if Figure 4 As shown, the cover plate and the positioning tube 15 are made of the same material and are integrally formed. A connecting boss 35 is provided on the side of the cover plate and extends to the positioning tube 15. A connecting ridge 36 is provided on the bottom surface of the cover plate 33 and extends to the positioning tube. There are at least two connecting bosses 35, and preferably three to six connecting bosses 35. The function of the connecting boss 35 is to fix the cover plate 33 and the positioning tube 15 and form them in one piece at one time. The connection position of the connecting ridge 36 and the positioning tube 15 is stronger than the connection position of the connecting boss 35 and the positioning tube 15. Finally, the connection position of the connecting boss is disconnected, while the connection position of the connecting ridge 36 is retained, so that the cover plate 33 can be disassembled and taken out together with the barrel cover when the cover is changed without changing the barrel.

[0033] A drinking water bucket comprises a bucket body and a disposable sealed bucket cover in the above specific embodiment, wherein the bucket body is provided with a bucket neck, and the upper end of the bucket neck has a bucket mouth, and the annular side wall 13 of the cover body 11 is threadedly connected or tightly sleeved with the bucket neck so that the bucket cover closes the bucket mouth. When the drinking water bucket using the disposable sealed bucket cover is changed, the bucket cover is easy to be punctured, so as to avoid excessive impact force hitting the water dispenser, and better protect the use safety of the water dispenser.

[0034] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A disposable sealed barrel cover, characterized in that: It includes a cover body with a ring side wall and a top wall, a positioning tube located on the inner side of the top wall and integrally formed with the top wall, and a sealed inner cover connected to the positioning tube by secondary injection molding or ultrasonic welding; the secondary injection molding material is different from the cover body material; the secondary injection molding material is an easy-to-tear soft glue; the sealed inner cover includes a transversely arranged cover plate, a sealing edge of a secondary injection molding connecting the cover plate and the positioning tube to form a sealing structure, the cover plate and the positioning tube are made of the same material and are integrally formed, the side of the cover plate is provided with a connecting boss extending to the positioning tube, the bottom surface of the cover plate is provided with a connecting convex strip extending to the positioning tube, the connecting boss fixes the cover plate and the positioning tube and is integrally formed at one time, and the connection position of the connecting convex strip and the positioning tube is stronger than the connection position of the connecting boss and the positioning tube; the positioning tube is provided with an inner plug whose bottom surface abuts against the sealing inner cover, and the inner plug is snap-connected or threaded to the inner side surface of the positioning tube.

2. The disposable sealed barrel cover according to claim 1, characterized in that: A clamping ring is provided on the inner wall surface of the positioning tube, and a convex buckle is provided on the outer wall surface of the inner plug located on the lower side of the clamping ring. The convex buckle is a discontinuously arranged convex point or a continuously extended convex ring. The inner plug is provided with a blocking ring to prevent the inner plug from sinking inward, and the cover body is provided with a step to cooperate with and support the blocking ring. The clamping ring is arranged in sections and is staggered with the convex buckle. When the inner plug rotates, the clamping ring and the convex buckle can be engaged with each other to prevent the inner plug from moving axially.

3. The disposable sealed barrel cover according to claim 1, characterized in that: A pull ring or a pinching portion is provided on the side edge of the top of the inner plug.

4. The disposable sealed barrel cover according to claim 1, 2 or 3, characterized in that: The inner side of the positioning tube is provided with a circumferentially distributed inner wing with a wall thickness less than 0.5 times the wall thickness of the positioning tube, and the secondary injection molding material covers the inner wing to form the sealed inner cover.

5. A drinking water bucket, characterized in that: It comprises a barrel body and a disposable sealed barrel cover as claimed in any one of claims 1 to 4, wherein the barrel body is provided with a barrel neck, the upper end of the barrel neck has a barrel opening, and the annular side wall of the cover body is threadedly connected or tightly sleeved with the barrel neck so that the barrel cover closes the barrel opening.

Images