A sealed connection structure and a sealed structure of a washing kettle

Abstract

This utility model relates to the technical field of sealing structures, and more specifically, to a sealing connection structure and a sealing structure for a washing kettle. It includes a first pipe, a second pipe, and a rubber cap. The second pipe is sleeved outside the first pipe, and the rubber cap is located between the first and second pipes. The inner diameter of the second pipe gradually decreases along its axial direction from the end near the rubber cap to the end away from the rubber cap. By using a rubber cap and allowing the inner diameter of the second pipe to gradually decrease along its axial direction, this utility model allows the rubber cap to move towards the end of the second pipe with the smaller inner diameter after the first and second pipes are connected, sealing the gap between the first and second pipes. This achieves a seal while facilitating installation.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing structures, and more specifically, to a sealing connection structure and a sealing structure for a washing kettle. Background Technology

[0002] When a car's windshield wipers are working, the fluid sprayed from the wiper nozzles comes from the car's washer fluid reservoir. Since washer fluid is a consumable, a refill port is needed for easy refilling. The washer fluid reservoir and refill port are usually separate units, sealed with a sealing ring at the refill port's pipe.

[0003] In existing technologies, to ensure that leaks do not occur during windshield washer fluid filling due to poor sealing, two layers of O-rings are typically installed between the washer fluid reservoir and the filling port for sealing, thus ensuring sealing performance throughout the entire lifespan. However, since the sealing rings require interference compression deformation to achieve a sealing effect, they are very difficult to install during assembly. This device cannot currently be installed robotically, making it very unfriendly to production line cycles. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing sealing structures that are difficult to install, and to provide a sealing connection structure and a washing kettle sealing structure that are easy to install while achieving a seal.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A sealing connection structure is provided, including a first pipe, a second pipe, and a rubber cap. The second pipe is sleeved outside the first pipe, and the rubber cap is located between the first pipe and the second pipe. The inner diameter of the second pipe gradually decreases along the axial direction of the second pipe from the end near the rubber cap to the end away from the rubber cap.

[0007] This utility model's sealing connection structure involves placing a rubber cap over the first pipe before connecting the first and second pipes. The rubber cap is then inserted into the second pipe from the end with the larger inner diameter, connecting the first and second pipes. After connection, the rubber cap is moved towards the second pipe, gradually increasing the inner diameter of the second pipe and gradually decreasing the gap between the first and second pipes. This allows the rubber cap to seal the gap between the first and second pipes, achieving a seal. By using a rubber cap and gradually decreasing the inner diameter of the second pipe along its axial direction, and then moving the rubber cap towards the end with the smaller inner diameter of the second pipe after connection, the gap between the first and second pipes is sealed, facilitating installation while achieving a seal.

[0008] Furthermore, the rubber cap includes a rotating part, a connecting part, and a sealing part connected in sequence, with the sealing part located between the first pipe and the second pipe. By rotating the rotating part, the rubber cap rotates, causing the sealing part to move towards the second pipe, thus sealing the gap between the first pipe and the second pipe.

[0009] Furthermore, the connecting part is threadedly connected to the first pipe. When the rotating part is rotated, the rubber cap moves towards the second pipe through the threaded connection between the connecting part and the first pipe.

[0010] Furthermore, the connecting portion includes a first connecting portion and a second connecting portion connected in sequence. The first connecting portion is connected to the rotating portion, and the second connecting portion is connected to the sealing portion. The first connecting portion is threadedly connected to the first pipe, and a first movable gap exists between the second connecting portion and the first pipe. By setting the first movable gap, the length of the threaded portion of the connecting portion is shortened, avoiding damage to the first pipe due to excessively long threads.

[0011] Furthermore, a second movable gap exists between the connecting part and the second pipe. By setting the second movable gap, the contact area between the rubber cap and the second pipe is reduced, friction is decreased, and it is easier for the sealing part to move to seal the gap between the first pipe and the second pipe.

[0012] Furthermore, the outer diameter of the connecting part gradually decreases from the rotating part to the sealing part. By making the outer diameter of the connecting part tapered, it is easier to insert the connecting part into the gap between the first pipe and the second pipe.

[0013] Furthermore, the rotating part includes a plurality of rotating protrusions arranged circumferentially along the connecting part. By providing a plurality of rotating protrusions, the friction between the rotating part and the hand is increased, making it easier to rotate the rotating part, thereby driving the rubber cap to move as a whole.

[0014] Furthermore, the end of the sealing part away from the connecting part is designed with an arc shape. By providing an arc shape, the sealing part can move freely between the first pipe and the second pipe, thereby facilitating the sealing of the gap between the first pipe and the second pipe.

[0015] This utility model also provides a sealing structure for a washing kettle, including a washing kettle, a filling pipe, and the sealing connection structure described above. The filling pipe is fixedly connected to the first pipe, and the washing kettle is fixedly connected to the second pipe.

[0016] The sealing structure of this utility model for a washing kettle connects a first pipe to a filling pipe and a second pipe to the washing kettle. The rubber cap not only achieves a seal but also facilitates the installation between the filling pipe and the washing kettle. Furthermore, after long-term use, the sealing effect can be maintained by replacing the rubber cap.

[0017] Furthermore, the rubber cap is provided with a first limiting surface and a second limiting surface, the filling pipe is provided with a first limiting mating surface that mates with the first limiting surface, and the washing kettle is provided with a second limiting mating surface that mates with the second limiting surface. By setting the first limiting surface and the first limiting mating surface, the rubber cap is limited when it is fitted onto the first pipe, and by setting the second limiting surface and the second limiting mating surface, the movement stroke of the rubber cap is limited, thereby facilitating the formulation of installation and connection standards.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model discloses a sealing connection structure and a sealing structure for a washing kettle. By setting a rubber cap and making the inner diameter of the second pipe gradually decrease along the axial direction of the second pipe, after the first pipe and the second pipe are connected, the rubber cap moves towards the end with the smaller inner diameter of the second pipe to seal the gap between the first pipe and the second pipe, which facilitates installation while achieving a seal. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of the sealing connection structure of this utility model;

[0021] Figure 2 This is a second-view structural schematic diagram of the sealing connection structure of this utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the rubber screw cap structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing structure of the washing kettle of this utility model;

[0025] Figure 6 yes Figure 5 Enlarged view of the structure at point B in the middle.

[0026] In the attached drawings: 100, first pipe; 200, second pipe; 300, rubber cap; 310, rotating part; 311, rotating protrusion; 312, first limiting surface; 313, second limiting surface; 320, connecting part; 321, first connecting part; 322, second connecting part; 323, first movable gap; 324, second movable gap; 330, sealing part; 331, arc structure; 400, washing kettle; 410, second limiting mating surface; 500, filling pipe; 510, first limiting mating surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. The present utility model will be further described below with reference to specific embodiments. The accompanying drawings are only for illustrative purposes and represent only schematic diagrams, not actual pictures, and should not be construed as limiting the present patent. In order to better illustrate the embodiments of the present utility model, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Furthermore, if the embodiments of this utility model involve descriptions such as "first" and "second," these descriptions are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features. In addition, the meaning of "and / or" in the text is that it includes three parallel options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Example 1

[0030] This embodiment is the first embodiment of the sealed connection structure, such as Figure 1As shown, it includes a first pipe 100, a second pipe 200, and a rubber cap 300. The second pipe 200 is sleeved outside the first pipe 100, and the rubber cap 300 is located between the first pipe 100 and the second pipe 200. The inner diameter of the second pipe 200 gradually decreases along the axial direction of the second pipe 200 from the end near the rubber cap 300 to the end away from the rubber cap 300. That is, the inner diameter of the second pipe 200 is tapered. The inner diameter of the second pipe 200 near the rubber cap 300 is larger, and the inner diameter of the second pipe 200 away from the rubber cap 300 is smaller.

[0031] like Figure 2 As shown, the rubber cap 300 includes a rotating part 310, a connecting part 320, and a sealing part 330 connected in sequence. The rotating part 310, connecting part 320, and sealing part 330 are all annular structures. The sealing part 330 is located between the first pipe 100 and the second pipe 200. By rotating the rotating part 310, the rubber cap 300 rotates, causing the sealing part 330 to move towards the second pipe 200, sealing the gap between the first pipe 100 and the second pipe 200. In this embodiment, the sealing part 330 uses sealing rubber, and the rubber cap 300 is a one-piece molded structure.

[0032] like Figure 3 As shown, a second movable gap 324 exists between the connecting part 320 and the second pipe 200. By setting the second movable gap 324, the contact area between the rubber cap 300 and the second pipe 200 is reduced, friction is reduced, and the sealing part 330 is made easier to move to seal the gap between the first pipe 100 and the second pipe 200.

[0033] like Figure 2 and Figure 3 As shown, the outer diameter of the connecting part 320 gradually decreases from the rotating part 310 to the sealing part 330. By making the outer diameter of the connecting part 320 tapered, it is easier to insert the connecting part 320 into the gap between the first pipe 100 and the second pipe 200.

[0034] like Figure 4 As shown, the rotating part 310 includes a plurality of rotating protrusions 311 arranged circumferentially along the connecting part 320. By providing a plurality of rotating protrusions 311, the friction between the rotating part 310 and the hand is increased, making it easier to rotate the rotating part 310, thereby driving the rubber screw cap 300 to move as a whole.

[0035] like Figure 3 As shown, the end of the sealing part 330 away from the connecting part 320 is provided with an arc structure 331. By providing the arc structure 331, it is convenient for the sealing part 330 to move in the gap between the first pipe 100 and the second pipe 200, thereby facilitating the sealing of the gap between the first pipe 100 and the second pipe 200.

[0036] The working principle of a sealing connection structure in this embodiment is as follows:

[0037] Before connecting the first pipe 100 and the second pipe 200, a rubber cap 300 is fitted over the first pipe 100. Then, the rubber cap 300 is inserted into the second pipe 200 from the end with the larger inner diameter, connecting the first pipe 100 and the second pipe 200. After connection, the rubber cap 300 is moved towards the second pipe 200, gradually increasing the inner diameter of the second pipe 200 and gradually decreasing the gap between the first pipe 100 and the second pipe 200. This allows the rubber cap 300 to seal the gap between the first pipe 100 and the second pipe 200, achieving a seal. By using the rubber cap 300 and gradually decreasing the inner diameter of the second pipe 200 along its axial direction, and then moving the rubber cap 300 towards the end with the smaller inner diameter of the second pipe 200 after the first pipe 100 and the second pipe 200 are connected, the gap between the first pipe 100 and the second pipe 200 is sealed, facilitating installation while achieving a seal.

[0038] Example 2

[0039] This embodiment is a second embodiment of a sealing connection structure. This embodiment is similar to the first embodiment, except that, as shown in the example... Figure 2 As shown, the connecting part 320 is threadedly connected to the first pipe 100. When rotating the rotating part 310, the rubber cap 300 moves towards the second pipe 200 through the threaded connection between the connecting part 320 and the first pipe 100. After the sealing part 330 on the rubber cap 300 blocks the gap between the inner wall of the second pipe 200 and the outer ring of the first pipe 100, there will be great resistance if the rubber cap 300 is tightened further. Just tighten it a little more to complete the installation process. The entire installation process only requires tightening the rubber cap 300 to complete the seal. At the same time, because the sealing part 330 of the rubber cap 300 deforms, the deformation force will continuously try to break free and recover, and the resulting reaction force will continuously act on the threads to ensure that the threads do not loosen.

[0040] like Figure 3 and Figure 4 As shown, the connecting part 320 includes a first connecting part 321 and a second connecting part 322 connected in sequence. The first connecting part 321 is connected to the rotating part 310, and the second connecting part 322 is connected to the sealing part 330. The first connecting part 321 is threadedly connected to the first pipe 100, and a first movable gap 323 is provided between the second connecting part 322 and the first pipe 100. By setting the first movable gap 323, the length of the thread on the connecting part 320 is shortened, avoiding damage to the first pipe 100 due to excessively long threads on the connecting part 320.

[0041] Example 3

[0042] The existing sealing connection between the washing water jug ​​400 and the filling pipe 500 typically uses an O-ring. Specifically, the outer wall of the filling pipe 500 has a recess, and the O-ring is fitted onto the outer wall of the filling pipe 500, located within the recess. When the filling pipe 500 is inserted into the washing water jug ​​400, the O-ring seals the gap between the two, achieving a seal. However, because the O-ring requires interference deformation to achieve a seal, when the filling pipe 500 is inserted axially into the washing water jug ​​400, the O-ring applies a radial force along the filling pipe 500, increasing friction and making it difficult to connect the filling pipe 500 to the washing water jug ​​400, resulting in assembly difficulties.

[0043] This embodiment is a first embodiment of a sealing structure for a washing kettle, such as... Figure 5 As shown, it includes a washing kettle 400, a filling pipe 500, and a sealing connection structure provided in Embodiment 1 or Embodiment 2. The filling pipe 500 is fixedly connected to the first pipe 100, and the washing kettle 400 is fixedly connected to the second pipe 200.

[0044] like Figure 6 As shown, the rubber cap 300 is provided with a first limiting surface 312 and a second limiting surface 313, the filling pipe 500 is provided with a first limiting mating surface 510 that mates with the first limiting surface 312, and the washing kettle 400 is provided with a second limiting mating surface 410 that mates with the second limiting surface 313. By setting the first limiting surface 312 and the first limiting mating surface 510, the rubber cap 300 is limited when it is fitted onto the first pipe 100. By setting the second limiting surface 313 and the second limiting mating surface 410, the movement stroke of the rubber cap 300 is limited, thereby facilitating the formulation of installation and connection standards.

[0045] The working principle of the sealing structure for a washing kettle in this embodiment is as follows:

[0046] First, the rubber cap 300 is fitted onto the first pipe 100 connected to the filling pipe 500. Then, the first pipe 100 is installed into the second pipe 200 connected to the washing kettle 400. Finally, the rubber cap 300 is rotated individually. The cap will continue downwards, moving towards the washing kettle 400. Once the sealing part 330 on the rubber cap 300 seals the gap between the inner wall of the second pipe 200 and the outer ring of the first pipe 100, further downward rotation of the cap will encounter significant resistance. A slight twist is sufficient to complete the installation. The entire installation process only requires tightening the rubber cap 300 to achieve a seal, unlike the previous example which used a double O-ring seal and required prolonged forceful insertion for proper assembly. By connecting the first pipe 100 to the filling pipe 500 and the second pipe 200 to the washing water jug ​​400, the rubber cap 300 facilitates the installation between the filling pipe 500 and the washing water jug ​​400 while achieving a seal. At the same time, after long-term use, it is easy to maintain the sealing effect by replacing the rubber cap 300.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sealed connection structure characterized by comprising: It includes a first pipe (100), a second pipe (200) and a rubber cap (300). The second pipe (200) is sleeved outside the first pipe (100). The rubber cap (300) is located between the first pipe (100) and the second pipe (200). The inner diameter of the second pipe (200) gradually decreases along the axial direction of the second pipe (200) from the end near the rubber cap (300) to the end away from the rubber cap (300).

2. The sealed connection structure according to claim 1, characterized by The rubber cap (300) includes a rotating part (310), a connecting part (320) and a sealing part (330) connected in sequence, and the sealing part (330) is located between the first pipe (100) and the second pipe (200).

3. The sealed connection structure according to claim 2, characterized by The connecting part (320) is threadedly connected to the first pipe (100).

4. The sealed connection structure according to claim 3, characterized by The connecting part (320) includes a first connecting part (321) and a second connecting part (322) connected in sequence. The first connecting part (321) is connected to the rotating part (310), and the second connecting part (322) is connected to the sealing part (330). The first connecting part (321) is threadedly connected to the first pipe (100), and a first movable gap (323) is provided between the second connecting part (322) and the first pipe (100).

5. The sealed connection structure according to claim 2, wherein There is a second movable gap (324) between the connecting part (320) and the second pipe (200).

6. The sealed connection structure according to claim 2, wherein The outer diameter of the connecting part (320) gradually decreases from the rotating part (310) to the sealing part (330).

7. The sealed connection structure according to any one of claims 2 to 6, characterized in that, The rotating part (310) includes a plurality of rotating protrusions (311) arranged circumferentially along the connecting part (320).

8. The sealed connection structure according to any one of claims 2 to 6, characterized by The end of the sealing part (330) away from the connecting part (320) is provided with an arc structure (331).

9. A washing kettle sealing structure characterized by, It includes a washing kettle (400), a filling pipe (500), and a sealing connection structure as described in any one of claims 1 to 8, wherein the filling pipe (500) is fixedly connected to the first pipe (100), and the washing kettle (400) is fixedly connected to the second pipe (200).

10. The washing-pot sealing structure according to claim 9, wherein The rubber cap (300) is provided with a first limiting surface (312) and a second limiting surface (313), the filling pipe (500) is provided with a first limiting mating surface (510) that mates with the first limiting surface (312), and the washing kettle (400) is provided with a second limiting mating surface (410) that mates with the second limiting surface (313).

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