Threadless container plug cap

Abstract

The present invention relates to a threadless container plug cap, comprising an outer cap body, an inner cap body, and a sealing ring sleeved on an outer wall of the inner cap body, wherein the outer cap body is fixedly connected to the inner cap body, and a first gap for accommodating a container mouth is formed between the sealing ring and the outer cap body; the inside of the inner cap body is provided with a driving assembly capable of moving up and down and compressing to cause radial expansion of the sealing ring; and the inside of a linkage body is provided with a limiting member, and the outer cap body is provided with a control member capable of locking or releasing the limiting member. The present invention mainly solves the problems in the prior art of an elastic sealing sleeve not being able to expand in a predetermined direction, and a container plug not being able to open smoothly when opened through only the elastic force of the elastic sealing sleeve.

Description

A threadless container plug cap Technical Field

[0001] The invention relates to a container structure, in particular to a threadless container plug cover. Background Art

[0002] Existing containers are generally sealed with threaded covers or solid rubber stoppers. The threaded covers require cumbersome rotation to open and close during use; solid rubber stoppers often require other auxiliary tools to open, which takes a lot of time. Rubber stoppers that are easy to open often have poor sealing properties and limited service life.

[0003] Therefore, the existing container lids have good sealing properties but cannot be opened and closed quickly; those that can be opened or closed quickly have poor sealing properties and poor insulation and leakage prevention effects.

[0004] In order to solve the above problems, Chinese invention patent CN104803085B discloses a container plug for quick opening and closing, which includes a cylindrical plug body, an annular plug body and an elastic sealing sleeve. The cylindrical plug body includes a plug rod. The bottom of the plug rod is provided with a base that can be inserted into or pulled out of the container. The shape and size of the base are matched with the shape and size of the straight section of the container mouth or the minimum cross-section of the container. An annular plug body is provided above the base, and a bendable and deformable elastic sealing sleeve is provided between the annular plug body and the base. The annular plug body and the base can move relative to each other along the axial direction of the container in the container under the action of external force to squeeze the elastic sealing sleeve, so that the elastic sealing sleeve expands radially and bends outward to form a sealing ring between the inner wall of the container and the outer contour of the base. The outer contour size of the sealing ring is larger than the inner surface size of the straight section of the container mouth or the inner surface size of the container at the minimum cross-section. The sealing ring together with the base forms a sealing layer for realizing rapid closure of the container. When opening, the external squeezing force on the elastic sealing sleeve is released, and the elastic sealing sleeve drives the annular plug body to move upward relative to the base under the action of elastic force, and the elastic sealing sleeve returns to a straight state, thereby realizing rapid opening of the container.

[0005] Although the container plug of the above technical solution can be opened or closed quickly, it has some insurmountable defects. When the container plug needs to close the container mouth, the space between the columnar plug and the annular plug body allows the elastic sealing sleeve to expand toward the inner wall of the container or in the opposite direction after being squeezed, resulting in that not every squeezing can achieve the effect of sealing the container mouth; when the container plug needs to be opened quickly, the above technical solution relies on the elastic force of the elastic sealing sleeve itself, but in reality, the elastic force of the elastic sealing sleeve itself is not enough to make the annular plug body rise, and it must be achieved with the help of an upward external force. Summary of the Invention

[0006] The purpose of the present invention is to provide a threadless container plug cover, which mainly solves the problem in the prior art that the elastic sealing sleeve cannot expand in a directional manner and the container plug cannot be opened freely when relying solely on the elastic force of the elastic sealing sleeve.

[0007] To achieve the above object, the technical solution of the present invention is:

[0008] A threadless container plug cap, comprising an outer cap, an inner cap, and a sealing ring sleeved on the outer wall of the inner cap, wherein the outer cap is fixedly connected to the inner cap, and a first gap for accommodating the container mouth is formed between the sealing ring and the outer cap; a driving assembly is provided in the inner cap that can move up and down and squeeze the sealing ring to expand radially; the characteristics are: the inner cap comprises a barrel and a first flange protruding outward from the top thereof, the first flange is fixedly connected to the inner wall of the outer cap, and the sealing ring sleeved on the outer wall of the barrel;

[0009] The driving assembly includes a driving plate, a linkage member and a base. A sliding rod is provided on the driving plate, and a sliding rod hole is provided on the first flange for the sliding rod to pass through. The linkage member includes a linkage body that can be inserted into the cylindrical body of the inner cover body and a second flange protruding outward from the top. The driving plate is provided on the lower surface of the first flange, and the sliding rod passes through the sliding rod hole and is fixedly connected to the second flange. The base is provided at the bottom of the linkage body, and the bottom of the sealing ring contacts the base.

[0010] A limiting component is arranged in the linkage body, and an operating component capable of locking or releasing the limiting component is arranged on the outer cover body.

[0011] Two limiting members are provided in the linkage body, each limiting member comprises two limiting rods arranged opposite to each other, and a protruding limiting block is provided at the relative position of the upper ends of the two limiting rods, and a second gap is left between the two limiting blocks;

[0012] Two mounting holes are symmetrically arranged on the outer wall of the outer cover, and the operating member is arranged in the mounting hole. The operating member includes a button and a first elastic reset member. The button includes a pressing part fixedly connected from the outside to the inside, a releasing part extending into the inside of the outer cover and having a width smaller than the second gap, and a locking part with a width larger than the second gap.

[0013] A fixing piece is arranged in the inner cover body, and a second elastic reset piece is arranged between the fixing piece and the bottom of the linkage body.

[0014] A clamping part is arranged on the base, an upward recessed part is arranged at the bottom of the linkage body, and a clamping interface for receiving the clamping part is arranged on the inner wall of the recessed part.

[0015] Through holes are provided at the same position on the bottom of the base and the linkage body, and the two are connected to form an exhaust hole. An exhaust rod is also provided. The exhaust rod includes a rod body and a rod cap with a radius larger than the rod body and arranged at the upper end of the rod body. The upper end of the rod cap abuts against the fixing part, and the lower end of the rod body is arranged in the exhaust hole. A third elastic reset part is arranged on the outer periphery of the rod body, and the upper end of the third elastic reset part abuts against the lower end of the rod cap, and the lower end thereof abuts against the bottom of the linkage body.

[0016] An inwardly convex bottom flange is provided at the bottom of the sealing ring, and the bottom flange contacts the base.

[0017] The driving plate is provided with at least two slide bars, the first flange is provided with slide bar holes equal to the number of the slide bars; the top of the slide bar is provided with a hook, and the second flange is provided with a number of slots for fixing the hook equal to the number of the slide bars.

[0018] By means of the above technical solution, the advantages of the present invention are:

[0019] 1. The container plug cover is closed against the container mouth, and the container mouth is pressed against the driving plate. The driving plate moves upward, driving the linkage body and the base to move upward. The base drives the bottom of the sealing sleeve to move upward, squeezing the sealing sleeve, causing the sealing sleeve to expand radially outward, sealing the container mouth, and using the container mouth to drive the plug cover to seal, with simple movements; 2. The bottom flange of the sealing sleeve ensures that the sealing sleeve can expand radially outward after being squeezed; 3. The second elastic reset member between the fixing member and the bottom of the linkage body ensures that when the container cover is opened, the sealing sleeve fully returns to its original state, so that the plug cover can be smoothly pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the structure of the mouth of a closed container according to the present invention.

[0021] FIG2 is a schematic diagram of the structure of the drive assembly of the present invention.

[0022] FIG3 is a schematic diagram of the exploded structure of the present invention.

[0023] FIG4 is a schematic diagram of the connection structure between the drive assembly, the inner cover body and the sealing ring of the present invention.

[0024] FIG5 is a schematic structural diagram of the present invention after the container mouth is opened.

[0025] 1-outer cover; 11-mounting hole; 2-inner cover; 21-cylinder; 22-first flange; 23-slide rod hole; 3-sealing sleeve; 31-bottom flange; 41-driving plate; 411-slide rod; 412-hook; 42-second flange; 421-bayonet; 43-linkage; 431-card interface; 44-base; 441-clamping part; 45-limiting rod; 46-limiting block; 47-second gap; 5-operating member; 51-pressing part; 52-first elastic return member; 53-releasing part; 54-locking part; 61-fixing member; 62-second elastic return member; 7-exhaust rod; 71-third elastic return member; 72-rod body; 73-rod cap; 8-container mouth; 81-first gap. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings, which are for illustrative purposes only and are not to be construed as limiting the present invention.

[0027] To more concisely illustrate this embodiment, some components well known to those skilled in the art but not relevant to the main content of this invention may be omitted from the drawings or descriptions. In addition, for ease of description, some components may be omitted, enlarged, or reduced in size in the drawings, but they do not represent the dimensions or entire structure of the actual product.

[0028] The present invention discloses a threadless container plug cover, as shown in Figure 1, which includes an outer cover body 1, an inner cover body 2 and a sealing sleeve 3 sleeved on the outer wall of the inner cover body 2. The outer cover body 1 is fixedly connected to the inner cover body 2, and a first gap 81 for accommodating the container mouth 8 is formed between the sealing sleeve 3 and the outer cover body 1. The plug cover is inserted into the container mouth 8 through the first gap 81.

[0029] In combination with Figures 4 and 5, a driving component is provided in the inner cover body 2, which can move up and down and squeeze the sealing sleeve 3 to expand radially; as shown in Figures 3 and 4, the inner cover body 2 includes a cylinder 21 and a first flange 22 protruding outward from the top thereof, the first flange 22 is fixedly connected to the inner wall of the outer cover body 1, and the sealing sleeve 3 is sleeved on the outer wall of the cylinder 21.

[0030] As shown in Figure 2, the driving assembly includes a driving plate 41, a linkage and a base 44. A slide rod 411 is provided on the driving plate 41, and a slide rod hole 23 is provided on the first flange 22 for the slide rod 411 to pass through; the linkage includes a linkage body 43 that can be inserted into the cylinder 21 of the inner cover body and a second flange 42 protruding outward from the top; the slide rod 411 of the driving plate 41 passes through the slide rod hole 23 from the lower surface of the first flange 22 and is fixedly connected to the second flange 42. In this way, the upward movement of the driving plate 41 drives the linkage to move upward, and the downward movement of the driving plate 41 drives the linkage to move downward.

[0031] Preferably, as shown in Figures 2 and 3, the drive plate 41 is provided with at least two slide rods 411, and the first flange 22 is provided with slide rod holes 23 equal to the number of slide rods 411; the top of the slide rod 411 is provided with a hook 412, and the second flange 42 is provided with a number of fixing hooks 412 equal to the number of slide rods 411.

[0032] The base 44 is disposed at the bottom of the linkage 43, and the bottom of the sealing sleeve 3 contacts the base 44. As shown in FIG1 , when the drive plate 41 is pushed upward by the container mouth 8 for insertion, the linkage 44 drives the upward movement, and the base 44 compresses the bottom of the sealing sleeve 3, causing the sealing sleeve 3 to expand radially outward, squeezing below the container mouth 8, thereby preventing the plug from being removed. Preferably, the bottom of the sealing sleeve 3 is provided with an inwardly convex bottom flange 31, which contacts the base 44. This ensures that the bottom of the sealing sleeve 3 expands radially outward when squeezed.

[0033] As shown in FIG. 2 , a clamping portion 441 is provided on the base 44 , an upward recessed portion is provided at the bottom of the linkage body 43 , and a clamping interface 431 for receiving the clamping portion 441 is provided on the inner wall of the recessed portion.

[0034] Furthermore, as shown in FIG3 , a fixing member 61 is provided in the inner cover body 2 , and a second elastic reset member 62 is provided between the fixing member 61 and the bottom of the linkage body 43 , which can ensure that after the base 44 releases the squeezing of the sealing sleeve 3 , the sealing sleeve 3 can quickly and fully return to its original state.

[0035] In order to enable the plug cover to be well sealed in the container or to be pulled out from the container, as shown in FIG3 , a limit piece is provided in the linkage body 43 , and the outer cover body 1 is provided with an operating piece 5 that can lock or release the limit piece.

[0036] As shown in FIG2 , two limiting members are provided in the linkage body 43 , each limiting member includes two limiting rods 45 arranged opposite to each other, and protruding limiting blocks 46 are provided at opposite positions on the upper ends of the two limiting rods 45 , with a second gap 47 left between the two limiting blocks 46 .

[0037] Correspondingly, as shown in Figure 3, two mounting holes 11 are symmetrically provided on the outer wall of the outer cover body 1, and the operating member 5 is provided in the mounting hole 11. The operating member 5 includes a button and a first elastic reset member 52. The button includes a pressing portion 51 fixedly connected in sequence from the outside to the inside, a releasing portion 53 extending to the inside of the outer cover body and having a width smaller than the second gap 47, and a locking portion 54 having a width larger than the second gap 47.

[0038] In the initial state of the operating member 5, the locking portion 54 is located above the limit member, as shown in Figure 1. When the lid plug is inserted and is about to close the container mouth 8, the container mouth 8 moves upward against the driving plate 41, and the two relative limit blocks 46 move upward. They are squeezed open at the second gap 47 by the locking portion 54 and rest on the upper surface of the locking portion 54. In this way, the lid plug blocks the container mouth and maintains the closed state.

[0039] As shown in FIG5 , when it is necessary to pull out the plug to open the container mouth 8, the pressing portion 51 of the button of the operating member 5 is squeezed inward, the locking portion 54 moves inward, and the releasing portion 53 moves to the second gap 47 position. The limit block loses its support. Under the elastic force of the second elastic return member 62, the linkage member moves downward, and the base 44 also moves downward, releasing the squeeze on the sealing sleeve 3. The sealing sleeve 3 returns to its initial state, the plug is opened, and can be pulled out of the container mouth. The first elastic return member 52 pushes the button to return to its initial state.

[0040] A through hole is provided at the same position on the bottom of the base 44 and the linkage body 43, and the two are connected to form an exhaust hole. An exhaust rod 7 is also provided. The exhaust rod 7 includes a rod body 72 and a rod cap 73 with a radius larger than the radius of the rod body 72 and arranged at its upper end. The upper end of the rod cap 73 abuts against the fixing member 61, and the lower end of the rod body 72 is arranged in the exhaust hole. A third elastic reset member 71 is arranged on the outer periphery of the rod body 72, and the upper end of the third elastic reset member 71 abuts against the lower end of the rod cap 73. The lower end of the third reset spring 71 abuts against the bottom of the linkage body 43.

[0041] The first elastic return member 52 , the second elastic return member 62 and the third elastic return member 71 generally use return springs.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. A non-threaded container plug cover, comprising an outer cover body (1), an inner cover body (2), and a sealing sleeve (3) sleeved on the outer wall of the inner cover body (2), the outer cover body (1) and the inner cover body (2) being fixedly connected, a first gap (81) for accommodating a container mouth (8) is formed between the sealing sleeve (3) and the outer cover body (1); a driving component capable of moving up and down and squeezing the sealing sleeve (3) to expand radially is arranged in the inner cover body (2); the characteristics are: The inner cover body (2) comprises a cylinder body (21) and a first flange (22) protruding outward from the top thereof; the first flange (22) is fixedly connected to the inner wall of the outer cover body (1); and the sealing sleeve (3) is sleeved on the outer wall of the cylinder body (21); The driving assembly comprises a driving plate (41), a linkage member and a base (44); a sliding rod (411) is arranged on the driving plate (41); a sliding rod hole (23) for the sliding rod (411) to pass through is arranged on the first flange (22); the linkage member comprises a linkage body (43) which can be inserted into the cylinder (21) of the inner cover body and a second flange (42) protruding outward from the top; the driving plate (41) is arranged on the lower surface of the first flange (22); the sliding rod (411) passes through the sliding rod hole (23) and is fixedly connected to the second flange (42); the base (44) is arranged at the bottom of the linkage body (43); the bottom of the sealing sleeve (3) is in contact with the base (44); A limiting member is provided in the linkage body (43), and the outer cover body (1) is provided with an operating member (5) capable of locking or releasing the limiting member.

2. The threadless container plug cap according to claim 1, characterized in that: Two limiting members are arranged in the linkage body (43), each limiting member comprises two limiting rods (45) arranged opposite to each other, and a protruding limiting block (46) is arranged at the upper ends of the two limiting rods (45) at opposite positions, and a second gap (47) is left between the two limiting blocks (46); Two mounting holes (11) are symmetrically arranged on the outer wall of the outer cover body (1), and the operating member (5) is arranged in the mounting hole (11). The operating member (5) comprises a button and a first elastic reset member (52), and the button comprises a pressing portion (51) fixedly connected in sequence from the outside to the inside, a releasing portion (53) extending into the inside of the outer cover body and having a width smaller than the second gap (47), and a locking portion (54) having a width larger than the second gap (47).

3. The threadless container plug cap according to claim 1, characterized in that: A fixing member (61) is arranged inside the inner cover body (2), and a second elastic reset member (62) is arranged between the fixing member (61) and the bottom of the linkage body (43).

4. The threadless container plug cap according to claim 3, characterized in that: A clamping portion (441) is provided on the base (44), an upwardly directed recessed portion is provided at the bottom of the linkage body (43), and a clamping interface (431) for receiving the clamping portion (441) is provided on the inner wall of the recessed portion.

5. The threadless container plug cap according to claim 4, characterized in that: The base (44) and the linkage body (43) are both provided with through holes at the same position at the bottom, and the two are connected to form an exhaust hole. An exhaust rod (7) is also provided. The exhaust rod (7) comprises a rod body (72) and a rod cap (73) having a radius greater than that of the rod body (72) and arranged at the upper end thereof. The upper end of the rod cap (73) abuts against the fixing member (61), and the lower end of the rod body (72) is arranged in the exhaust hole. A third elastic reset member (71) is arranged outside the rod body (72), and the upper end of the third elastic reset member (71) abuts against the lower end of the rod cap (73), and the lower end of the third elastic reset member (71) abuts against the bottom of the linkage body (43).

6. The threadless container plug cap according to claim 1, characterized in that: An inwardly convex bottom flange (31) is provided at the bottom of the sealing sleeve (3), and the bottom flange (31) is in contact with the base (44).

7. The threadless container plug cap according to claim 1, characterized in that: The driving plate (41) is provided with at least two slide bars (411); the first flange (22) is provided with slide bar holes (23) equal in number to the slide bars (411); the top of the slide bar (411) is provided with a hook (412); the second flange (42) is provided with a number of slots (421) for fixing the hook (412) equal in number to the slide bars (411).

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