Sealing rubber strip structure deformed by friction

Abstract

The utility model relates to the technical field of sealing rubber strips, in particular to a sealing rubber strip structure deformed by friction, which solves the technical problem that the existing sealing rubber strip is easy to leak air along with the change of pretightening force. The isosceles triangle part is connected to the middle of the left side wall of the rectangular part, and the isosceles triangle part and the rectangular part are integrally formed; the side length of the isosceles triangle part is smaller than the height of the left side wall of the rectangular part; the four corners of the rectangular part are round corners, the included angles where the isosceles triangle part is connected with the rectangular part are round corners, and the vertex angles of the isosceles triangle part are round corners; the right side wall of the rectangular part is used for connecting an end door, and the isosceles triangle part is used for being in extrusion fit with a flange contact surface. The sealing rubber strip is novel in structure, the deformation of the sealing rubber strip under the acting force is friction deformation, the counter-acting force needing to overcome the deformation of the rubber strip is reduced, the required pre-tightening force is reduced during overall sealing, and the operation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rubber strips, in particular to a friction-deformed sealing rubber strip structure. Background Art

[0002] Traditional sealing strips are generally round or oval in shape. The sealing strip structure can also be designed according to the shape of the strip groove in the flange. When sealing, the strip moves toward the flange under the action of the end door, mainly relying on the direct structural deformation of the strip to achieve sealing. The required preload force of this structure increases as the hardness and cross-sectional area of ​​the strip increase. When used, it is easy to leak as the preload force changes. Summary of the invention

[0003] In order to overcome the technical defect that the existing sealing rubber strip is prone to air leakage as the pre-tightening force changes, the utility model provides a friction-deformed sealing rubber strip structure.

[0004] The utility model provides a friction-deformed sealing strip structure, the cross section of which includes a rectangular part and an isosceles triangle part, the isosceles triangle part is connected to the middle position of the left side wall of the rectangular part and the two are integrally formed, the side length of the isosceles triangle part is smaller than the height of the left side wall of the rectangular part; the four corners of the rectangular part are all set to be rounded corners, the angle where the isosceles triangle part and the rectangular part are connected is set to be rounded corners, and the top angle of the isosceles triangle part is set to be rounded corners; the right side wall of the rectangular part is used to connect the end door, and the isosceles triangle part is used to be extruded and matched with the flange contact surface.

[0005] The sealing strip structure described in the utility model adopts the shape of a "hill". When sealing, the sealing strip structure is installed on the end door, and the right side wall of the rectangular part is pasted to the end door. Under the action of the pre-tightening force, the end door squeezes the sealing strip to deform the strip. When the strip moves toward the flange, it is squeezed and deformed with the contact surface of the flange. As the pre-tightening force increases, the sealing strip is pressed against the contact surface of the flange to achieve sealing.

[0006] The usage process is: when compressed, the flange is fixed on the box or other fixed structure, the sealing strip is fixedly connected to the end door, and the end door moves toward the flange under the action of external pressure, and the end door carries the sealing strip and moves synchronously. At this time, the strip is evenly arranged around the circumference of the end door. With the action of the pre-tightening force, the isosceles triangle part of the sealing strip is deformed during the friction process of the flange, and finally a better sealing effect is achieved.

[0007] Compared with the prior art, the technical solution provided by the utility model has the following technical effects: the sealing strip described in the utility model has a novel structure, the deformation of the sealing strip under the action of force is friction deformation, the reaction force required to overcome the deformation of the strip becomes smaller, the required pre-tightening force for overall sealing is reduced, and the operation is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 It is a schematic cross-sectional structure diagram of a friction-deformed sealing strip structure described in a certain embodiment of the utility model;

[0011] Figure 2 The utility model is a schematic assembly diagram of a friction-deformed sealing strip structure described in a certain embodiment of the utility model.

[0012] In the figure: 1. rectangular part; 2. isosceles triangle part; 3. end door; 4. flange. DETAILED DESCRIPTION

[0013] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0014] In the description, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0017] In one embodiment, Figure 1 and Figure 2As shown, a friction-deformed sealing strip structure has a cross-section including a rectangular portion 1 and an isosceles triangle portion 2. The isosceles triangle portion 2 is connected to the middle position of the left side wall of the rectangular portion 1 and the two are integrally formed. The side length of the isosceles triangle portion 2 is smaller than the height of the left side wall of the rectangular portion 1. The four corners of the rectangular portion 1 are all set to be rounded corners, the angle where the isosceles triangle portion 2 and the rectangular portion 1 are connected is set to be rounded corners, and the top angle of the isosceles triangle portion 2 is set to be rounded corners. The right side wall of the rectangular portion 1 is used to connect the end door 3, and the isosceles triangle portion 2 is used to be extruded and matched with the contact surface of the flange 4.

[0018] The sealing strip structure described in the utility model adopts the shape of a "hill". When sealing, the sealing strip structure is installed on the end door 3, and the right side wall of the rectangular part 1 is pasted to the end door 3. Under the action of the pre-tightening force, the end door 3 squeezes the sealing strip to deform the strip. When the strip moves toward the flange 4, it is squeezed and deformed on the contact surface with the flange 4. As the pre-tightening force increases, the contact surface between the sealing strip and the flange 4 is pressed tightly to achieve sealing.

[0019] The usage process is: when compressed for use, the flange 4 is fixed on the box body or other fixed structure, the sealing strip is fixedly connected to the end door 3, and the end door 3 moves toward the flange 4 under the action of external pressure, and the end door 3 carries the sealing strip to move synchronously. At this time, the strip is evenly arranged around the end door 3. With the action of the pre-tightening force, the isosceles triangle part 2 of the sealing strip is deformed during the friction process with the flange 4, and finally a better sealing effect is achieved.

[0020] The above is only a specific implementation of the utility model, which enables those skilled in the art to understand or implement the utility model. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A friction-deformed sealing strip structure, characterized in that: Its cross section comprises a rectangular portion (1) and an isosceles triangle portion (2), the isosceles triangle portion (2) being connected to the middle position of the left side wall of the rectangular portion (1) and the two being formed in one piece, the side length of the isosceles triangle portion (2) being smaller than the height of the left side wall of the rectangular portion (1); the four corners of the rectangular portion (1) are all rounded, the angle where the isosceles triangle portion (2) and the rectangular portion (1) are connected is rounded, and the top angle of the isosceles triangle portion (2) is rounded; the right side wall of the rectangular portion (1) is used to connect the end door (3), and the isosceles triangle portion (2) is used to be extruded and matched with the contact surface of the flange (4).

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