Cover body sealing structure and diaphragm pump

Abstract

The cover body sealing structure comprises a cover body and a shell, the shell comprises a wall body defining an opening, the cover body comprises a body used for shielding the opening, and the shell further comprises a first protruding part and a second protruding part which extend outwards in the radial direction from the wall body; the cover body further comprises a first buckling part and a second buckling part which are respectively provided with a first buckling hole and a second buckling hole, so that the first buckling part and the second buckling part are respectively matched with the first convex part and the second convex part; and barbs are arranged on the first convex parts, so that the first convex parts extend into the first buckling holes and then limit the first buckling parts. The sealing structure has better waterproof and dustproof effects, and is simple in process and convenient to disassemble. A diaphragm pump is also provided.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm pumps, in particular to the field of pump covers. Background Art

[0002] The existing sealing cover is generally provided with a side protrusion to be stuck in the side groove of the container, and the ear hole of the flexible ear of the cover is hung on the hook near the container opening. However, after the side protrusion structure of the sealing cover is stuck, it is very difficult to rotate, making it inconvenient for the cover body to be flexibly adjusted to a fixed angle. In addition, the protrusion structure is provided on the inner wall, which has the problems of difficult molding and high process difficulty. When the hook is installed in the ear hole, the ear hole needs to be expanded before it can be installed, which is not convenient for assembly.

[0003] Therefore, the above structure will cause great inconvenience when used on site, and also has great difficulty in manufacturing process. Utility Model Content

[0004] One purpose of the utility model is to provide a cover sealing structure, which has better waterproof and dustproof effects, simple process and convenient disassembly.

[0005] To achieve the above-mentioned purpose, a cover sealing structure includes a cover and a shell, wherein the shell includes a wall body surrounding an opening, the cover body is an elastic body, and includes a main body for covering the opening, and the shell also includes a first protrusion and a second protrusion extending radially outward from the wall body; the cover body also includes a first buckling portion and a second buckling portion with a first buckle hole and a second buckle hole respectively, to cooperate with the first protrusion and the second protrusion respectively; wherein the first protrusion is provided with a barb to limit the first buckling portion after extending into the first buckle hole.

[0006] In one or more embodiments, an anti-drop expansion end is provided on the second protrusion.

[0007] In one or more embodiments, the main body further includes a sealing groove for the wall body to be embedded therein.

[0008] In one or more embodiments, the sealing groove, the first buckling portion, the second buckling portion and the body are integrally formed.

[0009] In one or more embodiments, the first protrusion and the second protrusion are symmetrically arranged relative to the center of the opening.

[0010] In one or more embodiments, a concave-convex spiral cap structure is provided on the outer periphery of the wall.

[0011] In one or more embodiments, the first buckling portion and the second buckling portion are located at the edge of the body to form an ear-hanging structure.

[0012] In one or more embodiments, the length-to-neck ratio of the ear hook structure is in the range of 3:1 to 3.5:1.

[0013] In one or more embodiments, the body is configured to be tensioned after the first snap-fitting portion and the second snap-fitting portion are snap-fitted with the first protruding portion and the second protruding portion, respectively.

[0014] Another object of the utility model is to provide a diaphragm pump, comprising the above-mentioned cover sealing structure.

[0015] The above-mentioned cover body sealing structure uses the cooperation of the first protrusion, the second protrusion and the first buckling part and the second buckling part as a double guiding structure to achieve the closure of the opening, and by arranging barbs on the first protrusion, the first protrusion and the first buckling part form a hole-axis structure that is not easy to fall off, thereby allowing the cover body to rotate relative to the shell, and the second protrusion and the second buckling part form a buckling structure that is easy to disassemble. This structure improves the convenience of operation and process, and can achieve reliable waterproof and dustproof effects by means of the engagement of the sealing groove and the wall body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0017] Figure 1 is an external schematic diagram of the cover sealing structure;

[0018] Figure 2 It is a partial cross-sectional schematic diagram of the cover sealing structure;

[0019] Figure 3 It is a partial cross-sectional top view of the cover sealing structure;

[0020] Figure 4 yes Figure 2 A magnified view of point A;

[0021] Figure 5 is a top view of the cover;

[0022] Figure 6A-6B Schematic diagram of the barbed structure.

[0023] Symbols and Markings

[0024] 10 Cover

[0025] 11 body

[0026] 13 First buckle part

[0027] 14 Second buckle part

[0028] 15. Ear structure

[0029] 16 Sealing groove

[0030] 20 Shell

[0031] 21 Open

[0032] 22 Wall

[0033] 23 first raised portion

[0034] 24 Second raised portion

[0035] 26 Concave and convex screw cap structure

[0036] 131 First buttonhole

[0037] 141 Second buttonhole

[0038] 230 Barb

[0039] 240 Anti-slip expansion end DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0041] It should be noted that these and other subsequent drawings are only examples and are not drawn in proportion, and should not be used as a limitation on the actual scope of protection required by the present utility model.

[0042] like Figures 1 to 3 As shown, the cover sealing structure includes a cover 10 and a shell 20, the shell 20 includes a wall 22 surrounding an opening 21, and the cover 10 includes a body 11 for covering the opening 21. The cover 10 can be made of materials such as rubber, polyurethane, polyolefin or polyamide.

[0043] The housing 20 further includes a first protrusion 23 and a second protrusion 24 extending radially outward from the wall, and correspondingly, the cover 10 includes a first buckle portion 13 and a second buckle portion 14 respectively having a first buckle hole 131 and a second buckle hole 141. The first buckle portion 13 and the second buckle portion 14 are preferably arranged at the edge of the body 11 to form a hook structure 15, and are symmetrically arranged relative to the center of the opening 21.

[0044] The first buckle hole 131 and the second buckle hole 141 cooperate with the first protrusion 23 and the second protrusion 24 respectively, so as to realize the buckling of the first buckling portion 13 and the second buckling portion 14 with the first protrusion 23 and the second protrusion 24 .

[0045] The first protrusion 23 is provided with a barb 230. Figure 3 As shown, the first buckle portion 13 is limited after being inserted into the first buckle hole 131. The inclined direction of the barb 230 is consistent with the buckling direction of the first buckle portion 13, as shown in FIG. Figure 3 The end of the first protruding portion 23 is tilted to the right, which is consistent with the direction in which the first buckling portion 13 is sleeved on the first protruding portion 23, so as to facilitate the installation of the first buckling portion 13.

[0046] Furthermore, several specific structures of the barbs 230 (230') are as follows: Figure 6A-6B As shown, one or more barbs can be provided, and the angle of the barbs can be adjusted according to actual conditions. The barb structure enables the buckle portion of the cover body 10 to quickly cooperate with the guide of the protrusion, and will not be pulled out after installation, thereby limiting the hanging ear with the first buckle portion, so that the first protrusion and the first buckle portion form a hole-shaft structure that is not easy to fall off, thereby allowing the cover body 10 to rotate relative to the housing 20, and preventing the cover body 10 from being lost.

[0047] The barb 230 is only provided with a guide surface with an inclined surface on the radial outer side, so that the first protrusion 23 plays a role of rapid guidance and positioning when extending from the outside to the inside into the first buckle hole 131, which is convenient to install and not easy to disassemble, thereby preventing the cover from being lost.

[0048] The second protrusion 24 on the other side is not provided with barbs, so that the second protrusion 24 and the second buckle part 14 can be detachably buckled, thereby realizing the opening and closing of the cover body 10. When adding liquid, the second protrusion 24 and the second buckle part 14 are separated, so that the cover body is opened on one side of the second buckle part 14.

[0049] Preferably, the second protrusion 24 is provided with guide surfaces with arcs or inclined surfaces on both the inner and outer sides of the radial direction, forming a double guide structure on both the inner and outer sides, thereby improving the convenience of the disassembly process from the inside to the outside and the installation process from the outside to the inside. Preferably, the second protrusion 24 is provided with an anti-drop expansion end 240, and the diameter of the anti-drop expansion end 240 is slightly larger than the inner diameter of the second buckle hole 141, so that the second protrusion 24 will not fall off easily after being inserted into the second buckle hole 141 of the second buckling part 14. Figure 3 shown.

[0050] On the basis of the above embodiment, the protrusion on the circumferential surface of the second protrusion 24 is in the range of a slope of 30° to 80°, so that after the anti-drop expansion end 240 is inserted into the second hole buckle 141, the second buckling part 14 has a certain insertion and extraction force.

[0051] Since the cover 10 is an elastic body, the main body 11 is preferably configured to be tensioned after the first buckling portion 13 and the second buckling portion 14 are buckled with the first protrusion 23 and the second protrusion 24 respectively, which has the effect of tightening the elastic cover.

[0052] like Figure 5 As shown, the length-to-neck ratio range of the ear hook structure 15 , that is, the ratio of the length L to the neck width W is preferably 3:1 to 3.5:1, more preferably 3.1:1, so that the ear hook structure 15 is easy to bend and buckle relative to the body 11 .

[0053] To further achieve the sealing effect, the body 11 further includes a sealing groove 16, such as Figure 4 As shown, the sealing groove 16 is used to embed into the wall 22 of the shell 20; at the same time, the cover body 10, as an elastic body, is fixed to the open container by a certain pre-tightening force with the help of the tension of the snap-fit ​​structure at both ends, thereby achieving a waterproof and dustproof sealing effect at the open part of the container.

[0054] The sealing groove 16 , the first buckling portion 13 , the second buckling portion 14 and the ear hanging structure 15 can be integrally formed with the body 11 .

[0055] Preferably, a concave-convex screw cap structure 26 is provided on the periphery of the wall body 22. The concave-convex screw cap structure 26 refers to a structure with concave-convex patterns on the periphery of the wall body 22, such as knurling, for the purpose of increasing surface friction so that the shell 20 can be easily and flexibly adjusted to the desired angle.

[0056] Therefore, the above structure can achieve quick assembly and disassembly with the help of the cooperation of the first protrusion 23, the second protrusion 24 and the first buckle part 13, the second buckle part 14. The barb structure makes it easy to install the first protrusion and the first buckle part and forms a hole-shaft structure that is not easy to fall off, thereby solving the problems of complex process and inconvenient frequent assembly and disassembly in the prior art, and improving the convenience of operation and process; and with the help of the embedding of the sealing groove and the wall body, reliable sealing, waterproof and dustproof performance is achieved.

[0057] The cover sealing structure can be applied to various application scenarios with liquid storage openings that require cover sealing. For example, the utility model also provides a diaphragm pump, the pump includes a pump chamber for storing liquid and a pump head, and the pump head adopts the cover sealing structure, which is simple to manufacture and easy to use.

[0058] It should be noted that the above content uses words such as "first" and "second" to limit components, which is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0059] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0060] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model shall fall within the protection scope defined by the claims of the utility model.

Claims

1. A cover sealing structure, comprising a cover and a shell, wherein the shell comprises a wall surrounding an opening, and the cover comprises a body for covering the opening, characterized in that: The housing further includes a first protrusion and a second protrusion extending radially outward from the wall; The cover body further comprises a first buckle portion and a second buckle portion respectively having a first buckle hole and a second buckle hole, so as to respectively cooperate with the first protrusion portion and the second protrusion portion; Wherein, the first protrusion is provided with a barb to limit the first buckling portion after extending into the first buckle hole.

2. The cover sealing structure according to claim 1, characterized in that: The second protrusion is provided with an anti-drop expansion end.

3. The cover sealing structure according to claim 1, characterized in that: The main body also includes a sealing groove for the wall body to be embedded.

4. The cover sealing structure according to claim 3, characterized in that: The sealing groove, the first buckling portion, the second buckling portion and the body are integrally formed.

5. The cover sealing structure according to claim 1, characterized in that: The first protrusion and the second protrusion are symmetrically arranged relative to the center of the opening.

6. The cover sealing structure according to claim 1, characterized in that: The outer periphery of the wall body is provided with a concave-convex screw cap structure.

7. The cover sealing structure according to claim 1, characterized in that: The first buckling portion and the second buckling portion are located at the edge of the body to form an ear hanging structure.

8. The cover sealing structure according to claim 7, characterized in that: The length-to-neck ratio of the ear hook structure is in the range of 3:1 to 3.5:

1.

9. The cover sealing structure according to claim 1, characterized in that: The body is configured to be tensioned after the first buckling portion and the second buckling portion are buckled with the first protruding portion and the second protruding portion respectively.

10. A diaphragm pump, characterized in that It comprises a cover sealing structure as described in any one of claims 1 to 9.

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