Sealing device

Abstract

The application provides a sealing device, comprising a sealing assembly, a sealed assembly and a first sealing element; a sealing fit is formed between the sealing assembly and the sealed assembly; the first sealing element is arranged between a second cover body and the sealed assembly, and the first sealing element is fixed relative to one of the second cover body and the sealed assembly; when the sealing assembly and the sealed assembly are in rotary sealing, the first cover body rotates, and the second cover body and the sealed assembly remain relatively static due to the first sealing element. The sealing device provided by the application can enhance the sealing performance by arranging the first sealing element between the second cover body and the sealed assembly, so that the first cover body rotates and the second cover body and the sealed assembly remain relatively static, and the sealing device and the sealed assembly are simple to assemble and smooth to rotate.

Description

Technical Field

[0001] This application relates to the field of water softeners, and in particular to a sealing device. Background Technology

[0002] In the water softener industry, the water softener cover is the component most directly related to user experience, making its usability extremely important. However, current technology often uses a threaded structure for fixing and a sealing ring for sealing. The threaded fixing method is prone to loosening, and the sealing ring is also susceptible to folding or wrinkling, leading to poor sealing and leakage. Therefore, a simple, convenient, and reliable water softener sealing device is urgently needed. Utility Model Content

[0003] The purpose of this application is to provide a sealing device that is simple in structure and easy to use, comprising:

[0004] Sealing components;

[0005] A sealed component, wherein a sealing fit is formed between the sealing component and the sealed component;

[0006] The sealing assembly includes a first cover and a second cover, wherein the second cover is rotatably disposed within the first cover.

[0007] A first seal is configured between the second cover and the sealed component, and the first seal is fixed relative to either the second cover or the sealed component.

[0008] When the sealing assembly and the sealed assembly are rotated to seal, the first cover rotates, and the second cover and the sealed assembly remain relatively stationary due to the action of the first sealing element.

[0009] In some embodiments, the first cover is provided with a first snap-fit ​​member, and the sealed component is provided with a first snap-fit ​​member; a snap-fit ​​engagement is formed between the first snap-fit ​​member and the first snap-fit ​​member.

[0010] In some embodiments, when the sealing assembly and the sealed assembly perform rotational sealing, with the rotation center of the first cover as the center, the frictional torque T1 between the first snap-fit ​​member and the first snap-fit ​​member is ≤1.8 N·m and T1≥0.8 N·m.

[0011] In some embodiments, the first cover is provided with a second snap-fit ​​member, and the second cover is provided with a second snap-fit ​​feature. The second snap-fit ​​feature is disposed around the second cover, and the second snap-fit ​​member is rotatably snap-fitted with the second snap-fit ​​feature. The second snap-fit ​​member is used to limit the position of the second cover and provide a fulcrum for the second cover to rotate within the first cover.

[0012] In some embodiments, the sealed component includes a sealing mating member and an opening, the sealing mating member surrounding the opening, the sealing mating member including a first surface and a second surface disposed opposite to each other; wherein the first surface faces the opening and the second surface faces away from the opening.

[0013] In some embodiments, the first snap-fit ​​member is disposed on the first surface and / or the second surface;

[0014] The first snap-fit ​​component is positioned inside and / or outside the opening, corresponding to the position of the first snap-fit ​​component.

[0015] In some embodiments, the first seal and the first surface are in close contact to seal the opening; wherein, with the rotation center of the second cover as the center, the frictional torque T2 between the first seal and the first surface is ≥1.55 N·m.

[0016] In some embodiments, the first snap-fit ​​member is disposed on the side wall of the first cover facing the second surface, the first snap-fit ​​member is disposed on the second surface, the first snap-fit ​​member is provided with a sliding feature, the first snap-fit ​​member is provided with a sliding engagement feature, and the sliding feature and the sliding engagement feature slide and engage during rotation;

[0017] When the sliding fit feature engages with the sliding feature, the sliding fit feature guides the first cover to press towards the opening and fixes the first cover and the sealing fit member into a fixed engagement, thereby closing the first cover and the sealed component.

[0018] In some embodiments, the first cover has a third surface facing the second cover, and the second cover has a fourth surface facing the first cover. The third surface and the fourth surface abut against each other. When the sealing device and the sealed component are rotated to seal, the frictional torque T3 between the third surface and the fourth surface is less than 0.80 N·m with the center of the first cover as the center.

[0019] In some embodiments, a support member is provided on the side of the second cover away from the first cover, and the support member is used to prevent the first cover from deforming.

[0020] In some embodiments, the sealed assembly further includes a base and a limiting member, the sealing mating member is disposed on the base, the limiting member is disposed on the second surface, and the limiting member is located between the first cover and the base, the limiting member being used to limit the rotational position of the first cover on the second surface;

[0021] In some embodiments, the sealed component further includes a second seal located between the limiting member and the base, the second seal being used to enhance the sealing performance between the limiting member and the base.

[0022] The sealing device provided in this application embodiment, by placing the first sealing element between the second cover and the sealed component, causes the first cover to rotate while the second cover and the sealed component remain relatively stationary, thereby enhancing the sealing performance between the sealing component and the sealed component. At the same time, the sealing device and the sealed component are easy to assemble, convenient to use, and rotate smoothly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the sealing device structure according to an embodiment of this application;

[0025] Figure 2 yes Figure 1 Exploded view of the sealing device in the embodiment;

[0026] Figure 3 yes Figure 1 Another perspective of the exploded structure of the sealing device in the embodiment;

[0027] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the sealing device at point AA in the embodiment;

[0028] Figure 5 yes Figure 1 Exploded view of the sealing device in the embodiment;

[0029] Figure 6 yes Figure 2 Enlarged structural diagram of the sealing device at point B in the embodiment;

[0030] Figure 7This is a schematic diagram of the frictional torque T2 between the first seal and the first surface in an embodiment of this application.

[0031] Figure 8 This is a schematic diagram of the frictional torque T3 between the third and fourth surfaces in an embodiment of this application;

[0032] Figure 9 This is a schematic diagram of the sealing device structure according to another embodiment of this application;

[0033] Figure 10 This is a schematic diagram of the sealing device structure according to another embodiment of this application;

[0034] Figure 11 This is a schematic diagram of a sealing device structure in other embodiments of this application, in which the first sealing element is fixed relative to the sealed component;

[0035] Reference numerals: 10 sealing assembly, 100 first cover, 1000 first snap-fit ​​element, 1001 sliding feature, 1001a first segment, 1001b second segment, 1002 second snap-fit ​​element, 1003 third surface, 101 second cover, 1010 second snap-fit ​​feature, 1011 first seal, 1012 fourth surface, 1013 support element, 20 sealed assembly, 200 sealing mating element, 2000 first surface, 2000a abutment feature, 2001 second surface, 201 base, 202 limiting element, 203 second seal, 204 opening, 205 first snap-fit ​​element, 2050 sliding mating feature. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

[0038] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In the dishwasher industry, unsoftened water contains calcium and magnesium ions (hard water), which easily form limescale during high-temperature washing, clogging the dishwasher's spray arms, pipes, or heating elements. Therefore, water softeners remove calcium and magnesium ions from the water through ion exchange resins, providing softened water, significantly reducing limescale buildup, and extending the dishwasher's lifespan. Water softeners play a crucial role in dishwashers.

[0041] The brine in the brine chamber of a water softener is a consumable, requiring the user to manually open the softener cap and add it. As the component most directly related to user experience, the softener cap's performance is crucial. However, current technology often uses a threaded structure with a sealing ring for fixation. Threaded fixation is prone to loosening, and the sealing ring is also susceptible to folding or wrinkling, leading to poor sealing and leakage. Therefore, a simple, convenient, and reliable water softener sealing device is urgently needed.

[0042] The purpose of this application is to overcome the defects and deficiencies in the prior art and provide a sealing device that aims to solve the problems of complex structure, troublesome assembly, and great effort for users in the prior art of water softener sealing devices.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a schematic diagram of the sealing device structure according to an embodiment of this application. Figure 2 yes Figure 1 Exploded view of the sealing device in the embodiment. Figure 3 yes Figure 1 An exploded view of the sealing device from another perspective of the embodiment shows that the sealing device includes a sealing component 10 and a sealed component 20. The sealing component 10 includes a first cover 100 and a second cover 101. The second cover 101 is rotatably disposed within the first cover 100. The connection between the first cover 100 and the sealed component 20 can be, but is not limited to, a snap-fit, a screw thread, or an elastic sealing strip. In some embodiments, the first cover 100 is further provided with a first snap-fit ​​member 1000, and the sealed component 20 is provided with a first snap-fit ​​member 205. A snap-fit ​​engagement is formed between the first snap-fit ​​member 1000 and the first snap-fit ​​member 205, thereby sealing the sealing component 10 and the sealed component 20. In some embodiments, the sealing assembly 10 is a water softener cover, the sealed assembly 20 is a water softener salt inlet, the first cover 100 is an outer cover, and the second cover 101 is an inner cover. The second cover 101 is rotatably disposed in the first cover 100. The second cover 101 and the first cover 100 can be, but are not limited to, circular covers, and the rotation center of the first cover 100 on the second cover 101 coincides with the center of the second cover 101. The first cover 100 and the second cover 101 are respectively provided, so that the first cover 100 is engaged with the sealed component 20, and the second cover 101 seals the sealed component 20. At the same time, when the sealing component 10 and the sealed component 20 are rotated to seal, the first cover 100 rotates, and the second cover 101 and the sealed component 20 remain relatively stationary. This arrangement not only ensures that the rotation between the first cover 100 and the sealed component 20 is relatively smooth, but also ensures the airtightness between the second cover 101 and the sealed component 20 by not rotating.

[0044] like Figure 2 and Figure 3As shown, in order to ensure a certain locking strength when the sealing assembly 10 and the sealed assembly 20 are sealed together without requiring excessive force from the user, the frictional torque T1 between the first locking member 1000 and the first locked member 205 is ≥0.8 N·m, with the rotation center of the sealing assembly 10 as the center, which is also the rotation center of the first cover 100 as the center; and when the sealing assembly 10 and the sealed assembly 20 are sealed together, with the rotation center of the sealing assembly 10 as the center... Centered on the rotation center of the first cover 100, the frictional torque T1 between the first latching member 1000 and the first latched member 205 is ≤ 1.8 N·m. In some embodiments, the frictional torque T1 between the first latching member 1000 and the first latched member 205 can be, but is not limited to, 1.1 N·m, 1.3 N·m, 1.5 N·m, or 1.7 N·m, etc. Specifically, T1 is the frictional torque between the latching surface of the first latching member 1000 and the mating latching surface of the first latched member, centered on the rotation center of the first cover 100.

[0045] T1=F1*r1=μ*F N *r eq

[0046] Where F1: tangential frictional force, and the normal pressure F on the contact surface. N Related to the friction coefficient μ;

[0047] r1 / rqe: Equivalent friction radius, which depends on the geometry of the contact surface;

[0048] This formula requires calculation using calculus. After extensive experimentation and complex calculations by technical personnel, the result is 0.8 N·m ≤ T1 ≤ 1.8 N·m, which will not be elaborated further here.

[0049] like Figure 3 and Figure 4 As shown, Figure 4 yes Figure 1The schematic diagram of the sealing device at point AA shows that, in order to enable relative sliding of the second cover 101 relative to the first cover 100, the first cover 100 is provided with a second snap-fit ​​member 1002, and the second cover 101 is provided with a second snap-fit ​​feature 1010. The second snap-fit ​​feature 1010 is arranged around the second cover 101. The second snap-fit ​​member 1002 is rotatably snapped into place with the second snap-fit ​​feature 1010. The second snap-fit ​​member 1002 is used to limit the position of the second cover 101 and provide a fulcrum for the second cover 101 to rotate within the first cover 100. In some embodiments, the second latching feature 1010 is a groove surrounding the side wall of the second cover 101, and the second latching member 1002 is an "L"-shaped latching block. One end of the second latching member 1002 is fixed to the first cover 100, and the other end extends into the groove of the second latching feature 1010. Since the second latching feature 1010 is arranged around the side wall of the second cover 101, the second latching feature 1010 can rotate around the second latching member 1002. This arrangement allows the first cover 100 and the second cover 101 to be relatively independent, simplifying the assembly process. At the same time, the second latching member 1002 can be provided in three sets on the first cover 100, and the included angle between each set is 120°. The triangular arrangement can not only ensure the stability of the second latching member 1002 and the second latching feature 1010, but also minimize the number of second latching members 1002, thereby further simplifying the assembly and reducing costs.

[0050] like Figure 4 and Figure 5 As shown, Figure 5 yes Figure 1 An exploded view of the sealing device in this embodiment shows that the sealed component 20 includes a sealing mating member 200 and an opening 204. The sealing mating member 200 surrounds and forms the opening 204. The sealing mating member 200 includes a first surface 2000 and a second surface 2001 disposed opposite to each other; wherein the first surface 2000 faces the opening 204, and the second surface 2001 faces away from the opening 204. In some embodiments, the sealing mating member 200 is the sidewall of the salt inlet, the opening 204 is the salt inlet, the side of the sealing component 10 facing the opening 204 is the first surface 2000, and the side facing away from the opening 204 is the second surface 2001.

[0051] like Figure 5 and Figure 6 As shown, Figure 6 yes Figure 2The enlarged structural diagram of the sealing device at point B in the embodiment shows that the first snap-fit ​​member 1000 is disposed on the side wall of the first cover 100 facing the second surface 2001, and the first snap-fit ​​member 205 is disposed on the second surface 2001. The first snap-fit ​​member 1000 is provided with a sliding feature 1001, and the first snap-fit ​​member 205 is provided with a sliding engagement feature 2050. The sliding feature 1001 and the sliding engagement feature 2050 slide and engage during rotation. When the sliding engagement feature 2050 slides and engages with the sliding feature 1001, the sliding engagement feature 2050 guides the first cover 100 to press towards the opening 204 and fixes the first cover 100 and the sealing member 200, thereby closing the first cover 100 and the sealed assembly 20. In some embodiments, the first snap-fit ​​member 1000 protrudes from the side wall of the first cover 100 and is provided with a sliding feature 1001 facing the opposite direction of rotation. The sliding feature 1001 is a snap-fit ​​interface, which is divided into two sections: the first section 1001a is an angled snap-fit ​​interface, and the second section 1001b is a straight snap-fit ​​interface. The sliding engagement feature 2050 is a protrusion protruding from the second surface 2001, and the shape of the protrusion matches the snap-fit ​​interface. When the first snap-fit ​​member 1000 and the first snap-fit ​​member 205 rotate, the inclined surface of the sliding engagement feature 2050 on the first snap-fit ​​member 205 will drive the inclined surface on the sliding feature 1001 of the first snap-fit ​​member 1000 to move, thereby driving the first cover 100 to move toward the opening 204. After moving away from the inclined surface, the straight snap-fit ​​interface of the first snap-fit ​​member 1000 and the first snap-fit ​​member 205 rotate relative to each other, thereby achieving a tight snap-fit.

[0052] In other embodiments, such as Figure 9 and Figure 10 As shown, Figure 9 This is a schematic diagram of the sealing device structure according to another embodiment of this application. Figure 10 This is a schematic diagram of a sealing device structure according to another embodiment of this application. The first latching member 205 is disposed on a second surface 2001, and the first surface 2000 and the second surface 2001 are disposed simultaneously. When the first latching member 205 is disposed on the second surface 2001, as... Figure 9 As shown, the first snap-fit ​​member 1000 extends from the first cover 100 and engages with the first snap-fit ​​member 205 within the opening 204; when the first snap-fit ​​member 1000 is simultaneously disposed on the first surface 2000 and the second surface 2001, as... Figure 10 As shown, the first snap-fit ​​member 1000 extends from the first cover 100 and engages with the first snap-fit ​​member 205 both inside and outside the opening 204. In this application, the first snap-fit ​​member 1000 and the first snap-fit ​​member 205 include various snap-fit ​​methods at different positions, but their snap-fit ​​principles are similar. Therefore, similar snap-fit ​​methods are all within the protection scope of this application and will not be elaborated upon here.

[0053] A first seal 1011 is configured between the second cover 101 and the sealed assembly 20, and the first seal 1011 is fixed relative to either the second cover 101 or the sealed assembly 20; in some embodiments, such as Figure 3 and Figure 4 As shown, in order to achieve a seal between the second cover 101 and the sealed component 20, the second cover 101 is also provided with a first sealing element 1011. The first sealing element 1011 is in close contact with the first surface 2000, thereby sealing the opening 204. At the same time, the first surface 2000 is also provided with an abutment feature 2000a, which is an inclined surface and is in close contact with the first sealing element 1011, thereby creating a better sealing effect between the first sealing element 1011 and the second surface 2000. In some embodiments, the sealed component is located on the side of the second snap-fit ​​feature 1010 away from the first cover 100, and the second cover 101 is provided with a receiving groove. The first sealing element 1011 can be, but is not limited to, waterproof silicone, and the first sealing element 1011 has a certain elasticity, which can be used to fasten it in the receiving groove.

[0054] In other embodiments, such as Figure 11 As shown, Figure 11 This is a schematic diagram of a sealing device structure in other embodiments of this application, in which the first sealing element is fixed relative to the sealed component. The first sealing element 1011 can also be fixed to the sealed component 20. This fixing method can be, but is not limited to, snap-fit, integral formation, adhesive, etc. The first sealing element 1011 can be set in various positions and fixed in various ways, but the sealing principle is similar. Therefore, similar sealing positions are all within the protection scope of this application and will not be described in detail here.

[0055] like Figure 5 and Figure 7 As shown, Figure 7 This is a schematic diagram of the frictional torque T2 between the first sealing element and the first surface in an embodiment of this application. When the first cover 100 is rotated and engaged with the sealed component 20, the second cover 101 should not rotate to maintain good sealing performance. Therefore, the frictional torque between the first sealing element 1011 and the first surface 2000 should not be too small. With the rotation center of the second cover 101 as the center, the frictional torque T2 between the first sealing element 1011 and the first surface 2000 should be ≥ 1.55 N·m. In some embodiments, the frictional torque T2 between the first sealing element 1011 and the first surface 2000 can be, but is not limited to, 1.8 N·m, 2.2 N·m, 2.6 N·m, or 3.0 N·m. Specifically, T2 is the frictional torque between the contact surfaces of the first sealing element 1011 and the first surface 2000 with the rotation center of the second cover 101 as the center.

[0056] T2=F2*r2=μ*F N *r eq

[0057] Where F2: tangential frictional force, and the normal pressure F at the contact surface. N Related to the friction coefficient μ;

[0058] r2 / rqe: Equivalent friction radius, which depends on the geometry of the contact surface;

[0059] Through extensive experimentation, technicians derived the calculation formula between T1 and T2:

[0060] T3≥T 1max +A1

[0061] Where T 1max A1 is the maximum value of the frictional torque between the first snap-fit ​​member 1000 and the first snap-fit ​​member 205. A1 is a parameter calculated by technicians through experiments. In some embodiments, A1 can be, but is not limited to, 0.15 N·m, 0.25 N·m, 0.35 N·m, 0.45 N·m or 0.55 N·m.

[0062] like Figure 4 and Figure 8 As shown, Figure 8 This is a schematic diagram of the frictional torque T3 between the third and fourth surfaces in an embodiment of this application. The first cover 100 has a third surface 1003 facing the second cover 101, and the second cover 101 has a fourth surface 1012 facing the first cover 100. The third surface 1003 and the fourth surface 1012 abut against each other. Because the second cover 101 can rotate relative to the first cover 100, friction will be generated between them when the first cover 100 rotates. This friction will hinder the rotation of the first cover 100; therefore, the frictional torque between them needs to be as small as possible. When the sealing device and the sealed surface... When the sealing assembly performs rotational sealing, with the center of the first cover 100 as the center, the frictional torque T3 between the third surface 1003 and the fourth surface 1012 is less than 0.80 N·m. In some embodiments, the frictional torque T3 between the third surface 1003 and the fourth surface 1012 can be, but is not limited to, 0.70 N·m, 0.60 N·m, 0.50 N·m, or 0.40 N·m, etc. Specifically, T3 is the frictional torque between the contact surfaces of the third surface 1003 of the first cover 100 and the fourth surface 1012 of the second cover 101, with the rotation center of the first cover 100 as the center.

[0063] T3=F3*r3=μ*F N *r eq

[0064] Wherein, F3: tangential frictional force, and the normal pressure F at the contact surface.N Related to the friction coefficient μ;

[0065] r3 / rqe: Equivalent friction radius, which depends on the geometry of the contact surface;

[0066] Through extensive experimentation, technicians derived the calculation formula between T1 and T3:

[0067] T3 < T 1min

[0068] Where T 1min It is the minimum frictional torque between the first snap-fit ​​component 1000 and the first snap-fit ​​component 205.

[0069] like Figure 3 As shown, a support member 1013 is provided on the side of the second cover 101 opposite to the first cover 100. The support member 1013 is used to prevent the first cover 100 from deforming. In some embodiments, the support member 1013 can be in the shape of a cross or arranged along the diagonal of a circle.

[0070] like Figure 4 and Figure 5 As shown, the sealed assembly 20 also includes a base 201 and a limiting member 202. The sealing mating member 200 is disposed on the base 201, and the limiting member 202 is disposed on the second surface 2001. The limiting member 202 is located between the first cover 100 and the base 201, and the limiting member 202 is used to limit the rotational position of the first cover 100 on the second surface 2001. In some embodiments, the limiting member 202 is a locking block, and the limiting member 202 is provided with an internal thread on the side facing the second surface 2001. The second surface 2001 is provided with an external thread that mates with the limiting member 202. The two are engaged by the threads. The side of the limiting member 202 facing the first cover 100 contacts the bottom end of the side wall of the first cover 100, thereby forming a contact fit with the first cover 100 and locking the first cover 100.

[0071] like Figure 4 and Figure 5 As shown, the sealed assembly 20 also includes a second seal 203, which is located between the limiting member 202 and the base 201. The second seal 203 is used to enhance the sealing performance between the limiting member 202 and the base 201. In some embodiments, the second seal 203 may be, but is not limited to, waterproof silicone.

[0072] The sealing device of this application embodiment limits the frictional torque between each component, so that when the first cover and the sealed component are rotated for sealing, the operation is convenient, the use is easy, and the snap-fit ​​is firm. At the same time, the second cover does not rotate with the rotation of the first cover, thereby maintaining good airtightness.

[0073] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A sealing device, characterized in that, include: Sealing components; A sealed component, wherein a sealing fit is formed between the sealing component and the sealed component; The sealing assembly includes a first cover and a second cover, wherein the second cover is rotatably disposed within the first cover. A first seal is configured between the second cover and the sealed component, and the first seal is fixed relative to either the second cover or the sealed component. When the sealing assembly and the sealed assembly are rotated to seal, the first cover rotates, and the second cover and the sealed assembly remain relatively stationary due to the action of the first sealing element.

2. The sealing device according to claim 1, characterized in that, The first cover is provided with a first snap-fit ​​member, and the sealed component is provided with a first snap-fit ​​member; the first snap-fit ​​member and the first snap-fit ​​member form a snap-fit ​​engagement.

3. The sealing device according to claim 2, characterized in that, When the sealing assembly and the sealed assembly perform rotational sealing, with the rotation center of the first cover as the center, the frictional torque T1 between the first snap-fit ​​member and the first snap-fit ​​member is ≤1.8 N·m and T1≥0.8 N·m.

4. The sealing device according to claim 1, characterized in that, The first cover is provided with a second snap-fit ​​member, and the second cover is provided with a second snap-fit ​​feature. The second snap-fit ​​feature is arranged around the second cover. The second snap-fit ​​member and the second snap-fit ​​feature are rotatably snap-fitted together. The second snap-fit ​​member is used to limit the position of the second cover and provide a fulcrum for the second cover to rotate within the first cover.

5. The sealing device according to claim 2, characterized in that, The sealed component includes a sealing mating part and an opening. The sealing mating part surrounds and forms the opening. The sealing mating part includes a first surface and a second surface disposed opposite to each other. The first surface faces the opening, and the second surface faces away from the opening.

6. The sealing device according to claim 5, characterized in that, The first snap-fit ​​component is disposed on the first surface and / or the second surface; The first snap-fit ​​component is positioned inside and / or outside the opening, corresponding to the position of the first snap-fit ​​component.

7. The sealing device according to claim 5, characterized in that, The first seal and the first surface are in close contact to seal the opening; wherein, with the rotation center of the second cover as the center, the frictional torque T2 between the first seal and the first surface is ≥1.55 N·m.

8. The sealing device according to claim 5, characterized in that, The first snap-fit ​​member is disposed on the side wall of the first cover facing the second surface, the first snap-fit ​​member is disposed on the second surface, the first snap-fit ​​member is provided with a sliding feature, the first snap-fit ​​member is provided with a sliding engagement feature, and the sliding feature and the sliding engagement feature slide and engage during rotation; When the sliding fit feature engages with the sliding feature, the sliding fit feature guides the first cover to press towards the opening and fixes the first cover and the sealing fit member into a fixed engagement, thereby closing the first cover and the sealed component.

9. The sealing device according to claim 1, characterized in that, The first cover has a third surface facing the second cover, and the second cover has a fourth surface facing the first cover. The third surface and the fourth surface abut against each other. When the sealing device and the sealed component are rotated to seal, the frictional torque T3 between the third surface and the fourth surface is less than 0.80 N·m with the center of the first cover as the center.

10. The sealing device according to claim 1, characterized in that, The second cover has a support member on the side opposite to the first cover, and the support member is used to prevent the first cover from deforming.

11. The sealing device according to claim 5, characterized in that, The sealed assembly further includes a base and a limiting member. The sealing mating member is disposed on the base, and the limiting member is disposed on the second surface. The limiting member is located between the first cover and the base, and the limiting member is used to restrict the rotational position of the first cover on the second surface.

12. The sealing device according to claim 11, characterized in that, The sealed assembly further includes a second seal located between the limiting member and the base, the second seal being used to enhance the sealing performance between the limiting member and the base.

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