A sealing ring

Abstract

The utility model relates to the technical field of sealing element, more specifically is a kind of sealing ring. Including inside, two connecting parts of being fixedly connected on inside, outside of being fixedly connected on two connecting parts, outside and inside face to face arrangement;Two connecting parts and outside form inverted U shape structure, connecting part can change, so that outside shrinks to inside direction, so it can balance deformation shrink and sealing function. Reduce the dynamic action of hindering door and door frame.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and more specifically to a sealing ring. Background Technology

[0002] Sealing rings are widely used for sealing gaps between doors and door frames, equipment housings and covers, and other supports. Their core function is to block the transmission of substances or energy such as dust, water vapor, and noise, ensuring the cleanliness, sound insulation, and waterproofness of the sealed environment. They have important applications in building doors and windows, industrial equipment, and transportation vehicles.

[0003] Traditional sealing rings are mostly designed to maintain a certain shape. After installation, they have a large static friction with the object they come into contact with, which can easily cause friction with another support (such as a door) and hinder the opening and closing operation. If the tightness is not good, it is difficult to fit tightly with the support during sealing, creating a contradiction between "inconvenient opening and closing" and "poor sealing". Utility Model Content

[0004] This invention provides a sealing ring, the purpose of which is to balance deformation and shrinkage with sealing function.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A sealing ring includes an inner part, two connecting parts fixed to the inner part, and an outer part fixed to the two connecting parts, with the outer part and the inner part facing each other; the two connecting parts and the outer part form an inverted U-shaped structure, and the connecting parts can deform so that the outer part contracts towards the inner part.

[0007] Each of the left and right ends inside is fixed with a boss that protrudes from the connecting part and extends along the internal length direction.

[0008] The outer side facing away from the inside is fixed with multiple first protrusions.

[0009] The number of the first protrusion is at least three.

[0010] The number of the first protrusion is three.

[0011] An elastic part is fixed to the connecting part or the outside, and a second protrusion is fixed to the free end of the elastic part; the elastic part bends toward the outer central area, so that the second protrusion faces the adjacent first protrusion. When the first protrusion contacts the object, a seal is achieved. The object squeezes the elastic part or the second protrusion so that the second protrusion abuts against the first protrusion.

[0012] A first groove is provided on the side of any connecting part that is close to the inside and faces the other connecting part; a second groove is provided on the side of any connecting part that faces away from the other connecting part.

[0013] The expansion and contraction of the sealing ring is 10-16mm, the back-to-back distance between the two protrusions is 32-38mm, the back-to-back distance between the two connecting parts is 26-32mm, and the back-to-back distance between the inner part and the first protrusion is 35-41mm.

[0014] The interior has mounting holes, and an inflation nozzle is placed inside the mounting holes. The inflation nozzle is glued to the interior with adhesive.

[0015] The sealing ring is made of EPDM rubber.

[0016] The beneficial effects of this sealing ring are as follows:

[0017] The bosses at both ends of the interior can be pre-pressed by the inner wall of the support groove during installation, forming an "initial sealing position" and strengthening the sealing performance at the contact point between the sealing ring and the support.

[0018] The evenly distributed first protrusion on the outer top can reduce the pressure area and increase local deformation. Even if there are minor unevenness or installation errors in the support, the gap can be filled by sufficient local deformation to ensure a tight fit of the sealing surface.

[0019] The elastic part cooperates with the second protrusion. When sealing, the second protrusion is pressed and fits against the adjacent first protrusion to form a closed chamber, thus constructing a secondary barrier sealing structure and improving the sealing effect.

[0020] The first and second grooves of the connecting part can reduce the rigidity of the connecting part, facilitate bending deformation, and reduce the obstruction of the dynamic movement of the door and the door frame.

[0021] It can also be improved into an airbag structure, in which the sealing ring can retract back into the support groove when not in operation, and the sealing surface is lower than the groove opening, so as not to obstruct the opening and closing of the door and other supports at all.

[0022] During operation, compressed air at 0.3MPa is introduced through the internal air inlet, and the sealing ring can achieve a precise 13mm expansion and contraction, ensuring that the sealing surface fits tightly with the other support.

[0023] The arc transition design between the connection and the outside can disperse the stress during bending, avoid structural damage caused by stress concentration, and improve the fatigue resistance of the sealing ring.

[0024] The overall inverted U-shaped structure, combined with the positioning function of the boss, allows for easy installation in the grooves of various supports such as doors and equipment housings, without the need for complicated installation tools; Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the sealing ring structure;

[0026] Figure 2 This is a schematic diagram of the sealing ring in a usage scenario;

[0027] Figure 3 A schematic diagram of the structure after adding an elastic part and a second protrusion to the sealing ring;

[0028] Figure 4 This is a diagram illustrating the application scenario of the sealing ring. Figure 2 ;

[0029] Figure 5 This is a schematic diagram showing the dimensions of the sealing ring;

[0030] Figure 6 This is a schematic diagram showing the dimensions in a usage scenario.

[0031] In the figure: (1) inside; (1-1) boss; (2) connecting part; (2-1) first groove; (2-2) second groove; (3) outside; (3-1) first protrusion; (4) elastic part; (4-1) second protrusion. Detailed Implementation

[0032] A sealing ring, reference Figures 1 to 4 Example 1: Includes an inner part 1, two connecting parts 2 integrally connected to the inner part 1, and an outer part 3 integrally connected to the two connecting parts 2. The two connecting parts 2 and the outer part 3 form an inverted U-shaped structure. The inner part 1 serves as a base structure installed within a groove of one of the supports.

[0033] In a further optimized design, a boss 1-1 is integrally connected to each of the left and right ends of the inner part 1. During installation, the wall inside the support's groove pre-presses the bosses 1-1 on both sides, achieving a seal between the sealing ring and the support. Meanwhile, the outer part 3 is pressed and fitted against another support, achieving a seal between the two.

[0034] Further optimized, the top of the outer part 3 is integrally connected with multiple evenly distributed first protrusions 3-1, preferably three in number. When the sealing ring is compressed and fits against the door frame, the first protrusions 3-1 reduce the force-bearing area and increase the local force deformation of the sealing ring, making the seal more reliable.

[0035] In a further optimized configuration, a first groove 2-1 is provided at one end of any connecting part 2 near the inner part 1 and facing the other connecting part 2. A second groove 2-2 is provided on the side of any connecting part 2 facing away from the other connecting part 2. This facilitates the bending of the connecting parts 2.

[0036] Example 2, based on Example 1: The sealing ring can also be an airbag structure, made of EPDM rubber. For ease of understanding, please refer to... Figure 5 and 6The example uses a door as one support and a door frame as another. In this embodiment, the sealing ring's expansion / contraction is designed to be 13mm, the distance between the two back-to-back protrusions 1-1 is 35mm, the distance between the two back-to-back connecting parts 2 is 29mm, and the distance between the back-to-back surfaces of the inner part 1 and the first protrusion 3-1 is 38mm.

[0037] When there is no gas or a small amount of gas inside the sealing ring, i.e., when it is not in operation, the connecting part 2 can bend and deform to allow the sealing ring to retract back into the groove. In Embodiment 1, the first groove 2-1 and the second groove 2-2 facilitate the retraction of the sealing ring back into the groove. The sealing surface of the sealing ring, i.e., the side of the outer 3 facing away from the inner 1, is lower than the groove of the door, which facilitates the opening and closing of the door; when the door needs to be sealed, the sealing ring containing gas inside expands, and the sealing surface fits against the door frame to achieve a seal.

[0038] The sealing ring can be inflatable, with an inflation nozzle installed on the inside 1. Inflating the nozzle with 0.3 MPa of compressed air will cause the sealing ring to inflate. Alternatively, the sealing ring can be inflatable, with the inflation line and equipment installed inside the door.

[0039] Example 3, based on Example 1 or Example 2:

[0040] The transition area between the connecting part 2 and the outer part 3 is an arc segment. An elastic part 4 is fixed on the outer part 3 or the arc segment, and a second protrusion 4-1 is fixed to the free end of the elastic part 4. The elastic part 4 bends towards the center area of ​​the outer part 3, so that the second protrusion 4-1 faces the adjacent first protrusion 3-1. When the sealing surface is in contact with the door frame, the second protrusion 4-1 is pressed against the adjacent first protrusion 3-1 by the door frame. The elastic part 4, the second protrusion 4-1, the first protrusion 3-1 and the outer part 3 form a cavity, which optimizes the sealing effect.

Claims

1. A sealing ring, characterized in that, It includes an interior (1), two connecting parts (2) fixed to the interior (1), and an exterior (3) fixed to the two connecting parts (2). The exterior (3) is set face to face with the interior (1). The two connecting parts (2) and the exterior (3) form an inverted U-shaped structure. The connecting parts (2) can deform, so that the exterior (3) shrinks in the direction closer to the interior (1).

2. The sealing ring according to claim 1, characterized in that, A boss (1-1) protruding from the connecting part (2) and extending along the length of the interior (1) is fixed to each of the left and right ends of the interior (1).

3. The sealing ring according to claim 2, characterized in that, Multiple first protrusions (3-1) are fixed to the outer (3) side facing away from the inner (1).

4. The sealing ring according to claim 3, characterized in that, The number of the first protrusion (3-1) is at least three.

5. The sealing ring according to claim 4, characterized in that, The number of the first protrusion (3-1) is three.

6. The sealing ring according to claim 1, characterized in that, An elastic part (4) is fixed on the connecting part (2) or the outside (3), and a second protrusion (4-1) is fixed to the free end of the elastic part (4); the elastic part (4) bends toward the center area of ​​the outside (3) so that the second protrusion (4-1) faces the adjacent first protrusion (3-1). When the first protrusion (3-1) contacts the object to achieve a seal, the object squeezes the elastic part (4) or the second protrusion (4-1) so that the second protrusion (4-1) abuts against the first protrusion (3-1).

7. The sealing ring according to claim 1, characterized in that, A first groove (2-1) is provided on the side of any one of the connecting parts (2) near the interior (1) and facing the other connecting part (2); a second groove (2-2) is provided on the side of any one of the connecting parts (2) away from the other connecting part (2).

8. The sealing ring according to claim 3, characterized in that, The expansion and contraction of the sealing ring is 10-16mm, the back-to-back distance between the two sides of the boss (1-1) is 32-38mm, the back-to-back distance between the two connecting parts (2) is 26-32mm, and the back-to-back distance between the inner part (1) and the first protrusion (3-1) is 35-41mm.

9. The sealing ring according to claim 1, characterized in that, An air inlet is provided on the inside (1).

10. The sealing ring according to claim 1, characterized in that, The sealing ring is made of EPDM rubber.

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