Sealed upper cover structure and pipe fitting

Abstract

The utility model provides a sealing type upper cover structure and a pipe fitting, and relates to the technical field of sealing structures, the sealing type upper cover structure comprises an integrally formed upper cover body, the sealing end of the upper cover body is provided with an outer ring and an inner ring, the inner ring is arranged in the outer ring, and the inner side wall of the inner ring is provided with an internal thread part connected with an outlet of the pipe fitting; a side sealing ring matched with the inner wall of the pipe fitting outlet to form sealing is arranged in the inner ring; the upper cover body is provided with a hollow part, and the hollow part extends to the top end of the upper cover body from the inner ring in the axial direction of the upper cover body. The inner thread part is in threaded connection with the outer wall of the pipe fitting outlet, the side sealing ring extends into the pipe fitting outlet and is matched with the inner wall of the pipe fitting outlet to achieve sealing, connection between the upper cover and the pipe fitting is achieved, sealing of the pipe fitting outlet is achieved, paste in the pipe fitting cannot break through the sealing structure, sealing is reliable, and the sealing effect is good. And the convenience of assembly can be improved, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, and particularly to a sealed upper cover structure and a pipe fitting. Background Art

[0002] With the progress of society and the development of technology, consumers have higher and higher requirements for product packaging. Many paste products are packaged with pipe fittings, such as toothpaste, ointment, etc.

[0003] At present, the pipe fittings for packaging paste include soft pipe fittings and hard pipe fittings. When using soft pipe fittings, the user squeezes the soft pipe fitting body to make it deformed, and extrudes the paste inside the soft pipe fitting from the opening of the soft pipe fitting. Hard pipe fittings are usually used together with a vacuum pump to pump out the paste inside the hard pipe fitting.

[0004] Due to the high production cost of the vacuum pump, usually multiple replaceable auxiliary pipes filled with paste are provided for one vacuum pump to reduce the overall cost.

[0005] In the prior art, the nozzle of the auxiliary pipe is usually first sealed with a metal foil, and then the upper cover is tightened to prevent the paste in the auxiliary pipe from flowing out accidentally. However, the method of sealing the nozzle of the auxiliary pipe by using a metal foil in combination with the upper cover in the prior art has the following defects and needs to be improved:

[0006] 1. There is a situation where the paste in the auxiliary pipe breaks through the metal foil, and the sealing effect is not good.

[0007] 2. Multiple steps are required during product assembly, which is inconvenient for assembly and has a high cost. Summary of the Utility Model

[0008] Aiming at the defects in the prior art, the purpose of the utility model is to provide a sealed upper cover structure and a pipe fitting.

[0009] According to a sealed upper cover structure provided by the utility model, it includes an integrally formed upper cover body. A outer ring and an inner ring are provided at the sealing end of the upper cover body. The inner ring is arranged inside the outer ring. An internal thread part connected to the pipe fitting outlet is provided on the inner side wall of the inner ring; A side sealing ring that cooperates with the inner wall of the pipe fitting outlet to form a seal is arranged in the inner ring; A hollow part is provided on the upper cover body, and the hollow part extends axially along the upper cover body from the inner ring to the top end of the upper cover body.

[0010] Preferably, the outer ring, the inner ring and the side sealing ring are coaxially arranged.

[0011] Preferably, the height of the inner ring at the sealing end of the upper cover body is greater than that of the outer ring.

[0012] Preferably, a bottom seal is provided inside the inner ring. The bottom seal separates the hollow portion from the internal thread portion of the inner sidewall of the inner ring, and the side seal ring is connected to the bottom seal.

[0013] Preferably, at least one cylinder extending from the top end of the upper cover body to the bottom seal is provided in the hollow portion.

[0014] Preferably, a sealing protrusion is formed on the outer wall of the side seal ring.

[0015] Preferably, the upper cover body is integrally formed by injection molding.

[0016] Preferably, a label is provided at the top end of the upper cover body, and the label closes the opening of the hollow portion at the top end of the upper cover body.

[0017] A pipe fitting according to the present utility model includes an external thread portion provided on the outer wall of the pipe fitting outlet. The external thread portion meshes with the internal thread portion. The inner wall of the pipe fitting outlet allows the side seal ring to extend therein, and the inner wall of the pipe fitting outlet cooperates with the outer wall of the side seal ring for sealing.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] 1. The internal thread portion of the present utility model is threadedly connected to the outer wall of the pipe fitting outlet. By extending the side seal ring into the pipe fitting outlet and cooperating with the inner wall of the pipe fitting outlet for sealing, not only the connection between the upper cover and the pipe fitting is realized, but also the reliable sealing of the pipe fitting outlet is achieved. The paste in the pipe fitting cannot break through the sealing structure, the sealing is reliable, and it helps to improve the assembly convenience and the cost is low.

[0020] 2. By providing the hollow portion and making the hollow portion have at least one cylinder extending from the top end of the upper cover body to the bottom seal, the present utility model realizes the integral injection molding of the upper cover, improves the processing convenience of the upper cover structure, and the hollow portion can also reduce the weight of the upper cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects, and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 It is a cross-sectional view mainly showing the connection structure between the upper cover structure and the pipe fitting outlet of the present utility model.

[0023] Reference Signs:

[0024] Upper cover body 1

[0025] Outer ring 2

[0026] Inner ring 3

[0027] Internal thread portion 4

[0028] Side seal ring 5

[0029] Hollowed-out part 6

[0030] Pipe fitting outlet 7

[0031] External thread part 8 Detailed implementation mode

[0032] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0033] As Figure 1 shown, a sealed upper cover structure provided according to the present utility model includes an integrally formed upper cover body 1. An outer ring 2 and an inner ring 3 are provided at the sealing end of the upper cover body 1. The inner ring 3 is arranged inside the outer ring 2, and an internal thread part 4 connected to the pipe fitting outlet 7 is provided on the inner side wall of the inner ring 3. A side seal ring 5 that cooperates with the inner wall of the pipe fitting outlet 7 to form a seal is arranged in the inner ring 3. A hollowed-out part 6 is provided on the upper cover body 1, and the hollowed-out part 6 extends axially along the upper cover body 1 from the inner ring 3 to the top end of the upper cover body 1.

[0034] The upper cover of the technical solution of the present application is threadedly connected to the outer wall of the pipe fitting outlet 7 through the internal thread part 4, and the side seal ring 5 is inserted into the pipe fitting outlet 7 and cooperates with the inner wall of the pipe fitting outlet 7 to achieve sealing. It not only realizes the connection between the upper cover and the pipe fitting, but also realizes the sealing of the pipe fitting outlet 7, improves the convenience of assembly, and has reliable sealing.

[0035] Specifically, the upper cover structure can be made of plastic material and has a certain structural elasticity. The outer ring 2, the inner ring 3, and the side seal ring 5 are coaxially arranged. The height of the inner ring 3 at the sealing end of the upper cover body 1 is greater than that of the outer ring 2, so that the inner ring 3 can be inserted into the pipe fitting. A sealing protrusion is formed on the outer wall of the side seal ring 5. A bottom seal is arranged inside the inner ring 3. The bottom seal separates the hollowed-out part 6 from the internal thread part 4 on the inner side wall of the inner ring 3, and the side seal ring 5 is connected to the bottom seal.

[0036] Furthermore, the upper cover of the technical solution of the present application is integrally formed by injection molding. Specifically, due to the structural settings of the outer ring 2, the inner ring 3, and the side seal ring 5 of the upper cover structure, it is difficult to integrally form the upper cover body 1 by injection molding. By providing the hollowed-out part 6 and making the hollowed-out part 6 have at least one column extending from the top end of the upper cover body 1 to the bottom seal, the integral injection molding of the upper cover is realized, which improves the convenience of processing the upper cover structure, and the hollowed-out part 6 can also reduce the weight of the upper cover.

[0037] In a feasible embodiment: a label sticker is provided at the top end of the upper cover body 1, and the label sticker closes the opening of the hollowed-out portion 6 at the top end of the upper cover body 1, which helps to improve the aesthetic degree of the upper cover body 1.

[0038] The present utility model also provides a pipe fitting, which includes an external thread portion 8 provided on the outer wall of the pipe fitting outlet 7. The external thread portion 8 meshes with the internal thread portion 4. The inner wall of the pipe fitting outlet 7 allows the side sealing ring 5 to extend therein, and the inner wall of the pipe fitting outlet 7 cooperates with the outer wall of the side sealing ring 5 for sealing.

[0039] It should be further noted that the upper cover structure and the pipe fitting of the present application are particularly applicable to a replaceable toothpaste tube. A piston is provided at the bottom of the pipe fitting. When in use, the upper cover structure is removed, and a vacuum pump assembly that cooperates with the piston to pump out the paste is installed at the pipe fitting outlet 7.

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A sealed upper cover structure, characterized in that, It includes an integrally formed upper cover body (1). An outer ring (2) and an inner ring (3) are provided at the sealing end of the upper cover body (1). The inner ring (3) is arranged inside the outer ring (2). An internal thread portion (4) connected to the pipe fitting outlet (7) is provided on the inner side wall of the inner ring (3). A side sealing ring (5) that cooperates with the inner wall of the pipe fitting outlet (7) to form a seal is provided in the inner ring (3). A hollowed-out portion (6) is provided on the upper cover body (1). The hollowed-out portion (6) extends axially along the upper cover body (1) from the inner ring (3) to the top end of the upper cover body (1).

2. The sealed upper cover structure according to claim 1, characterized in that, The outer ring (2), the inner ring (3), and the side sealing ring (5) are coaxially arranged.

3. The sealed upper cover structure according to claim 1, characterized in that, The height of the inner ring (3) at the sealing end of the upper cover body (1) is greater than that of the outer ring (2).

4. The sealed upper cover structure according to claim 1, wherein, A bottom cover is provided inside the inner ring (3). The bottom cover separates the hollowed-out portion (6) from the internal thread portion (4) on the inner side wall of the inner ring (3), and the side sealing ring (5) is connected to the bottom cover.

5. The sealed upper cover structure according to claim 4, wherein, At least one column extending from the top end of the upper cover body (1) to the bottom cover is provided in the hollowed-out portion (6).

6. The sealed upper cover structure according to claim 1, characterized in that, A sealing protrusion is formed on the outer wall of the side sealing ring (5).

7. The sealed upper cover structure according to claim 1, wherein The upper cover body (1) is integrally formed by injection molding.

8. The sealed upper cover structure according to claim 1, characterized in that A label is provided at the top end of the upper cover body (1). The label closes the opening of the hollowed-out portion (6) at the top end of the upper cover body (1).

9. A pipe fitting, characterized in that, In cooperation with the sealed upper cover structure according to any one of claims 1-8, it includes an external thread portion (8) provided on the outer wall of the pipe fitting outlet (7). The external thread portion (8) meshes with the internal thread portion (4). The inner wall of the pipe fitting outlet (7) allows the side sealing ring (5) to extend in, and the inner wall of the pipe fitting outlet (7) cooperates with the outer wall of the side sealing ring (5) for sealing.

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