Sealing structure

Abstract

The utility model discloses a sealing structure and relates to the field of sealing, the sealing structure is used for sealing a cavity, the sealing structure comprises a driving part, a sealing part and a sealing part, the driving part is rotatably connected with the sealing assembly, the sealing assembly has a sealing state and a detachable state, in the sealing state, the sealing assembly abuts against the inner wall of the cavity in a sealed mode, and in the detachable state, a pressure relief space is formed between the sealing assembly and the inner wall of the cavity. The cavity communicates with the outside through the pressure relief space, and the driving piece rotates and presses the sealing assembly, so that the pressure relief space is formed between the sealing assembly and the inner wall of the cavity. According to the sealing structure provided by the technical scheme, a good sealing effect can be kept, and meanwhile, the sealing structure is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, and particularly relates to a sealing structure. Background Art

[0002] In order to avoid the leakage of fluid and solid in a certain cavity, protect the safe and stable operation of equipment and systems, and maintain the ideal functional experience of products, products often need to be designed with a sealing structure. At present, there are several common structural designs for realizing cavity sealing on the market. For example, the most common way is to achieve sealing through a screwed connection. Both components are provided with spiral ridges and grooves, which cooperate with each other to form a continuous sealing surface. However, the sealing effect of this method is poor. There is also a sealing design that plays a sealing role by increasing interference. For example, SR silicone on the wiring harness. The inner side of the SR silicone is fixed to the wiring harness, and the gap between the wiring harness and the mating part is filled during assembly, so that the inside of the cavity will not leak air. However, this kind of sealing structure is difficult to disassemble and assemble.

[0003] Therefore, it has become an urgent problem to design a sealing structure that is convenient for disassembly and assembly. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a sealing structure, aiming to solve the technical problem that the current sealing structure of the cavity is not convenient for disassembly and assembly.

[0005] To achieve the above purpose, the sealing structure proposed by the utility model is used for sealing a cavity. The sealing structure includes:

[0006] A driving member; and

[0007] A sealing assembly, the driving member is rotationally connected to the sealing assembly. The sealing assembly has a sealing state and a detachable state. In the sealing state, the sealing assembly is in sealing contact with the inner wall of the cavity. In the detachable state, there is a pressure relief space between the sealing assembly and the inner wall of the cavity, and the cavity is communicated with the outside through the pressure relief space. The driving member rotates and presses the sealing assembly, so that a pressure relief space is formed between the sealing assembly and the inner wall of the cavity. Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0009] Figure 1Schematic cross-sectional structure diagram of the sealing structure embodiment (sealed state) provided by the present utility model;

[0010] Figure 2 Schematic cross-sectional structure diagram of the sealing structure embodiment (detachable state) provided by the present utility model;

[0011] Figure 3 Schematic cross-sectional structure diagram of the sealing structure embodiment (detachable state) from another angle provided by the present utility model;

[0012] Figure 4 Schematic exploded structure diagram of the sealing structure embodiment provided by the present utility model;

[0013] Figure 5 Another schematic exploded structure diagram of the sealing structure embodiment provided by the present utility model;

[0014] Figure 6 Schematic exploded structure diagram of the sealing structure embodiment provided by the present utility model;

[0015] Figure 7 Another schematic exploded structure diagram of the sealing structure embodiment provided by the present utility model.

[0016] Explanation of reference numerals in the drawings:

[0017] 100, driving member; 110, driving part; 111, driving surface; 120, pressing part; 130, rotating part; 140, blocking member; 150, receiving groove;

[0018] 200, sealing assembly; 210, upper cover; 211, groove; 212, support seat; 220, sealing member;

[0019] 300, reset member; 310, first torsion arm; 320, second torsion arm;

[0020] 410, first buckle; 420, second buckle;

[0021] 500, cavity.

[0022] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0026] In the prior art, the most common sealing structure design for achieving sealing is through a screwed connection structure, but the sealing effect of this method is poor. There is also a sealing design that plays a sealing role by increasing interference, such as SR silicone on the wiring harness. The inner side of the SR silicone is fixed to the wiring harness, and the gap between the wiring harness and the mating part is filled during assembly, so that the inside of the cavity will not leak air. However, this kind of sealing structure is difficult to disassemble and assemble. Therefore, designing a sealing structure that is convenient for disassembly and assembly has become an urgent problem to be solved.

[0027] The present utility model proposes a sealing structure.

[0028] Please refer to Figures 1 to 7 As shown, in an embodiment of the present utility model, the sealing structure is used for sealing the cavity 500. The sealing structure includes: a driving member 100 and a sealing assembly 200. Among them, the driving member 100 is rotationally connected to the sealing assembly 200. The sealing assembly 200 has a sealing state and a detachable state. In the sealing state, the sealing assembly 200 is in sealing contact with the inner wall of the cavity 500. In the detachable state, there is a pressure relief space between the sealing assembly 200 and the inner wall of the cavity 500. The cavity 500 communicates with the outside through the pressure relief space. The driving member 100 rotates and presses the sealing assembly 200, so that a pressure relief space is formed between the sealing assembly 200 and the inner wall of the cavity 500.

[0029] In the specific implementation process, it should be noted that the sealing component 200 is used to contact and connect the cavity 500 to achieve the sealing of the cavity 500, and the sealing component 200 also leaves the cavity 500 to release the sealing of the cavity 500 to achieve the flow of the medium in the cavity 500. The cavity 500 has a port, and the sealing component 200 is connected to the position of the cavity 500 near the port. Specifically, in this embodiment, when the sealing component 200 is in a sealed state, refer to Figure 1 As shown, the sealing component 200 is sealingly abutted against the inner wall of the cavity 500 . It can be understood that the edge of the sealing component 200 abuts against the inner wall of the cavity 500 to block the connection between the inside of the cavity 500 and the outside, thereby achieving the sealing of the cavity 500 .

[0030] It can be understood that the sealing assembly 200 is used to seal the cavity 500, and the sealing assembly 200 abuts against the inner wall of the cavity 500 to achieve sealing. The sealing assembly 200 needs to be in a detachable state when installed in the cavity 500 or leaves the cavity 500. Figure 2 and Figure 3 As shown, the air pressure inside the cavity 500 is balanced with that outside, and the air pressure inside the cavity 500 is prevented from affecting the installation and removal of the sealing assembly 200. Specifically, the driving member 100 is connected to the sealing assembly 200 in rotation, and the driving member 100 is driven to rotate, so that one end of the driving member 100 also presses the sealing assembly 200, so that the edge of the sealing assembly 200 leaves the inner wall of the cavity 500. In the specific implementation process, the driving member 100 presses the position of the driving assembly near the middle, so that the position of the middle is deformed in the axial direction, and then the edge of the sealing assembly 200 can be pulled away from the inner wall of the cavity 500, so that a spacing distance is formed between the two, and then a pressure relief space is formed. In this way, the inside and outside of the cavity 500 are connected through the pressure relief space. When the sealing assembly 200 enters the cavity 500 or leaves the cavity 500, the inside of the cavity 500 is connected with the outside through the pressure relief space, so that the pressure inside the cavity 500 is balanced with the outside, which is convenient for the sealing assembly 200 to be installed in place and disassembled smoothly.

[0031] The technical solution of the utility model realizes the sealing effect by adopting the sealing abutment between the sealing component 200 and the inner wall of the cavity 500, and the driving member 100 is rotatably connected with the sealing component 200, and drives the driving member 100 to rotate and press the sealing component 200, so that the edge of the sealing component 200 leaves the inner wall of the cavity 500, and then forms a pressure relief space between the sealing component 200 and the inner wall of the cavity 500, so that the interior of the cavity 500 is connected with the outside through the decompression space, and when installing and disassembling the sealing component 200, the pressure inside the cavity 500 is balanced with the external pressure, which facilitates the disassembly of the sealing component 200.

[0032] In one embodiment, the sealing assembly 200 includes: an upper cover 210 and a sealing member 220, wherein the driving member 100 is rotatably connected to the upper cover 210. The outer wall edge of the sealing member 220 is adapted to the inner wall of the cavity 500 and is used to seal against the inner wall of the cavity 500. The sealing member 220 is connected to the upper cover 210, and the two enclose a driving space. The driving member 100 is at least partially located in the driving space. The driving member 100 rotates to press the sealing member 220 so that the edge of the sealing member 220 leaves the inner wall of the cavity 500.

[0033] refer to Figure 4 As shown, in this embodiment, the seal 220 is connected to the upper cover 210. When the cavity 500 is sealed, the upper cover 210 is set at the port of the cavity 500. When the sealing assembly 200 is installed in the cavity 500, the upper cover 210 also abuts against the end surface of the cavity 500 to prompt that the seal 220 is installed in place. The seal 220 is connected to the upper cover 210 and encloses a driving space. The part of the driving member 100 located in the driving space presses the seal 220 during the overall rotation of the driving member 100. The seal 220 produces a certain yield deformation during the pressing process, so that the part of the seal 220 close to the center protrudes along the axial direction of the driving space toward the outside direction of the driving space, thereby pulling the outer edge of the seal 220 away from the inner wall of the cavity 500. In the specific implementation process, the material of the seal 220 can be plastic, rubber, or silicone.

[0034] In the sealed state, the outer diameter of the sealing part 220 and the inner wall of the cavity 500 is equal to the inner diameter of the cavity 500, so that the edge of the sealing part 220 and the inner wall of the cavity 500 can be sealed and abutted to seal the cavity 500. It should also be noted that in the general state where the sealing part 220 is not matched with the cavity 500, the outer diameter of the sealing part 220 used for sealing and abutting the cavity 500 is greater than or equal to the inner diameter of the cavity 500, so as to ensure that the sealing part 220 can be closely attached to the inner wall of the cavity 500 when it is sealed with the cavity 500, thereby ensuring the effectiveness of the seal. In addition, the outer diameter of the seal 220 should also ensure that when the driving member 100 presses the seal 220, the outer diameter of the seal 220 used to abut the cavity 500 is smaller than the inner diameter of the cavity 500, so as to ensure that there is a certain spatial distance between the seal 220 and the inner wall of the cavity 500 to form a pressure relief space, so that the air pressure inside the cavity 500 is balanced with that of the outside, which facilitates the disassembly and installation of the sealing assembly 200 into the cavity 500.

[0035] In one embodiment, the upper cover 210 is provided with a groove 211, and the groove 211 also opens an avoidance groove connected to the driving space. The driving member 100 includes a driving part 110 and a pressing part 120. The driving part 110 is movably accommodated in the groove 211, the pressing part 120 is located in the driving space, and the driving member 100 is also movably connected to the avoidance groove.

[0036] The groove 211 is located at the top of the upper cover 210. Specifically, the top surface of the upper cover 210 is recessed towards the driving space to form the groove 211. The avoidance groove penetrates through the bottom wall and the side wall of the groove 211. The driving member 100 is partially located in the groove 211. The pressing portion 120 extends into the driving space through the avoidance groove, and the driving member 100 is also movably connected to the avoidance groove. Driving the part of the driving member 100 located in the groove 211 causes the driving member 100 to rotate relative to the upper cover 210. Further, one end of the driving member 100 close to the sealing member 220 rotates and presses the sealing member 220 towards the inside of the cavity 500, driving the edge of the sealing member 220 to move radially away from the inner wall of the cavity 500. In a specific implementation process, the free end of the pressing portion 120 extends along the radial direction of the sealing member 220, and the cross-section of the driving member 100 in the axial direction is in an "L" shape. In this way, driving the driving member 100 to rotate can cause the pressing portion 120 to press the sealing member 220.

[0037] In addition, one side wall and the bottom wall of the groove 211 are smoothly transitioned to form an arc surface. On the one hand, it is convenient for the user to press the driving portion 110 with a finger. On the other hand, it is also convenient to clean the groove 211.

[0038] Further, the driving portion 110 is provided with a driving surface 111, and the driving surface 111 is inclined, so that a depression is formed in a part of one side of the driving portion 110 close to the pressing end, and the depth of the depression gradually becomes shallower towards the free end direction of the driving member 100. In this way, while pressing to drive the driving member 100, it is also convenient to take the sealing assembly 200.

[0039] Reference Figures 5 to 7 As shown, in an embodiment, the driving member 100 further includes a rotating portion 130. A support seat 212 is provided on one side of the upper cover 210 facing the driving space. The rotating portion 130 is rotatably connected to the support seat 212. In a specific implementation process, the rotating portion 130 is configured as a rotating shaft. The support seat 212 is provided on the bottom surface of the upper cover 210. The support seat 212 provides a supporting function for the driving member 100. The support seat 212 is provided with a rotating hole, and the rotating shaft is rotatably arranged in the rotating hole.

[0040] In addition, in an embodiment, the driving member 100 further includes a stopper 140. The stopper 140 is connected to the driving portion 110 and is arranged in the driving space. Specifically, stoppers 140 are respectively provided on both sides of the driving member 100, improving the rotational stability of the driving member 100 and also preventing the driving member 100 from radially moving and falling off from the avoidance groove.

[0041] Reference Figure 5As shown, in one embodiment, the sealing structure further includes a reset member 300. The reset member 300 is connected to the driving member 100 and is used to drive the driving member 100 to rotate and reset, so that the sealing assembly 200 switches from the detachable state to the sealing state.

[0042] In the specific implementation process, the reset member 300 is connected to the driving member 100 and drives the driving member 100 to rotate and reset to ensure that when in the sealing state, the sealing member 220 seals and abuts against the inner wall of the cavity 500. When a driving force is applied to the driving part 110 to drive the driving member 100 to rotate and press the sealing member 220, the reset member 300 accumulates the force to drive the driving member 100 to rotate in the reverse direction. After the driving force is removed, the reset member 300 drives the driving member 100 to rotate in the reverse direction, so that the pressing part 120 rotates away from the sealing member 220 to eliminate the pressing force on the sealing member 220, and the sealing member 220 automatically resets so that the edge of the sealing member 220 seals and abuts against the inner wall of the cavity 500.

[0043] In one embodiment, there are two driving members 100, and the two driving members 100 are arranged oppositely. The reset member 300 is respectively connected to the two driving members 100. Specifically, the two driving members 100 are arranged oppositely, the two pressing parts 120 are arranged staggeredly, and the two driving members 100 are also provided with avoidance areas to avoid the pressing parts 120 of each other, making the two driving members 100 more compact. In the specific implementation process, when driving forces are simultaneously applied to the two driving parts 110 to make them rotate towards each other, the two pressing parts 120 press the sealing member 220, and the reset member 300 is stretched or twisted. After the driving force is withdrawn, the reset member 300 drives the two pressing parts 120 to rotate in the reverse direction, so that the driving parts 110 move away from each other and reset.

[0044] In one embodiment, the reset member 300 is configured as a spring. The spring includes a first torsion arm 310 and a second torsion arm 320. One of the two driving members 100 is connected to the first torsion arm 310, and the other of the two driving members 100 is connected to the second torsion arm 320. When the two driving members 100 rotate, the spring is twisted by the first torsion arm 310 and the second torsion arm 320, so that the spring accumulates the torsional force for resetting to drive the two driving members 100 to rotate and reset.

[0045] In the specific implementation process, the driving member 100 is provided with a receiving groove 150, and the reset member 300 is received in the receiving groove 150. Specifically, the opposite side walls of the driving parts 110 of the two driving members 100 are recessed to form two receiving grooves 150, and the spring is fixedly connected to the side walls of the receiving grooves 150.

[0046] In one embodiment, the upper cover 210 is detachably connected to the sealing member 220. In the specific implementation process, the upper cover 210 and the sealing member 220 can be connected by screws or buckles or magnetic attraction or other detachable means, which is convenient for disassembly and assembly.

[0047] Reference Figure 5 And Figure 6 As shown, in one embodiment, the upper cover 210 is snap-connected to the seal 220. Specifically, one of the upper cover 210 and the seal 220 is provided with a first snap 410, and the other is provided with a second snap 420. The first snap 410 is snap-connected with the second snap 420. The first snap 410 is arranged at a position near the edge of the bottom surface of the upper cover 210. The first snap 410 is provided with a hook. The second snap 420 and the seal 220 can be integrally formed, or can be connected by injection molding or hot melting. The second snap 420 is provided with a slot, and the hook is snap-connected in the slot. Further, a plurality of first snaps 410 are arranged at intervals along the circumferential direction of the upper cover 210. Correspondingly, a plurality of second snaps 420 are arranged at intervals along the circumferential direction of the seal 220.

[0048] It should be noted that the outer diameter of the seal 220 is equal to or slightly larger than the inner diameter of the inner wall of the sealed cavity 500. If the sealing assembly 200 is directly pressed and assembled, the air pressure inside the sealed cavity 500 increases, generating a repulsive force to obstruct the upper cover 210 assembly and preventing it from being assembled in place. In the present technical solution, when the two sides of the two driving members 100 are pinched by fingers, the driving members 100 rotate inward along the arc surface with the pressing. The bottom of the driving member 100 indicated by the arrow presses against the seal 220 and causes the seal 220 to contract and deform. At this time, the outer diameter of the seal 220 is smaller than the inner diameter of the inner wall of the sealed cavity 500, and a pressure relief space is formed between the inner wall of the cavity 500 and the outer wall of the seal 220. The gas inside and outside the cavity 500 is in a flowing state through the pressure relief space, and the air pressure is balanced, so that the assembly can be completed.

[0049] After releasing the fingers, the driving members 100 return to the initial state under the action of the spring and the seal 220. The outer diameter of the seal 220 is again equal to the inner diameter of the inner wall of the sealed cavity 500, and the inside of the cavity 500 is sealed. At this time, the gas inside and outside the cavity 500 does not flow. If the upper cover 210 and the seal 220 are directly taken out, the air pressure inside the cavity 500 decreases, generating a suction force to obstruct the separation of the upper cover 210 and the seal 220. It is necessary to pinch the driving members 100 again to form a pressure relief space between the seal 220 and the inner wall of the cavity 500, so that the gas inside and outside the cavity 500 flows and the air pressure balance state is maintained, and then the upper cover 210 and the seal 220 can be removed.

[0050] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sealing structure, characterized in that, For sealing a cavity, the sealing structure includes: A driving member; and A sealing assembly, the driving member is rotationally connected to the sealing assembly, the sealing assembly has a sealing state and a detachable state. In the sealing state, the sealing assembly is in sealing contact with the inner wall of the cavity. In the detachable state, there is a pressure relief space between the sealing assembly and the inner wall of the cavity, and the cavity communicates with the outside through the pressure relief space. The driving member rotates and presses the sealing assembly so that the pressure relief space is formed between the sealing assembly and the inner wall of the cavity.

2. The sealing structure according to claim 1, wherein, The sealing assembly includes: An upper cover, the driving member is rotationally connected to the upper cover; and A seal, the outer wall edge of the seal is adapted to the inner wall of the cavity and is used for sealing contact with the inner wall of the cavity. The seal is connected to the upper cover, and the two enclose a driving space. At least part of the driving member is located in the driving space. The driving member rotates and presses the seal so that the edge of the seal leaves the inner wall of the cavity.

3. The sealing structure according to claim 2, characterized in that, The upper cover is provided with a groove, and the groove is also provided with an avoidance groove communicating with the driving space. The driving member includes a driving part and a pressing part. The driving part is movably received in the groove, the pressing part is located in the driving space, and the driving member is also movably connected to the avoidance groove.

4. The sealing structure according to claim 3, wherein, The driving member further includes a rotating part, and a support seat is provided on one side of the upper cover facing the driving space. The rotating part is rotationally connected to the support seat.

5. The sealing structure according to claim 3, characterized in that, The driving part is provided with a driving surface, and the driving surface is inclined; and / or The driving member further includes a stopper, the stopper is connected to the driving part, and the stopper is provided in the driving space.

6. The sealing structure according to claim 1, wherein, The sealing structure further includes a reset member, the reset member is connected to the driving member and is used to drive the driving member to rotate and reset so that the sealing assembly switches from the detachable state to the sealing state.

7. The sealing structure according to claim 6, wherein, There are two driving members, and the two driving members are arranged oppositely. The reset member is respectively connected to the two driving members.

8. The sealing structure according to claim 7, characterized in that The reset member is configured as a spring. The spring includes a first torsion arm and a second torsion arm. One of the two driving members is connected to the first torsion arm, and the other of the two driving members is connected to the second torsion arm.

9. The sealing structure according to claim 6 or 7, characterized in that The driving member is provided with a receiving groove, and the reset member is received in the receiving groove.

10. The sealing structure according to claim 2, wherein, The upper cover is detachably connected to the seal.

11. The sealing structure according to claim 10, characterized in that, The upper cover is snap-connected to the seal. One of the upper cover and the seal is provided with a first snap, and the other is provided with a second snap, and the first snap and the second snap are cooperatively snap-connected.

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