Sealing gasket and window sealing device

Abstract

The utility model relates to the technical field of window sealing, and particularly discloses a sealing gasket and a window sealing device, which comprise a sealing gasket body and a mounting mechanism for mounting the sealing gasket, a sealing groove with an L-shaped cross section is formed in the edge of the lower surface of the sealing gasket body in a surrounding mode, and a sealing ring is installed on the top of the inner wall of the sealing groove. The height c of the sealing ring is larger than the side face height d of the sealing groove, the inner side wall of the sealing ring and the inner wall of the sealing groove form a sealing cavity, and the width e of the sealing ring is smaller than the width f of the sealing cavity. The height c of the sealing ring is larger than the height d of the side face of the sealing groove, that is, the sealing ring deforms and makes contact with the lower window plate to achieve the sealing effect, only the deformed sealing ring of the sealing gasket makes contact with the lower window plate, and therefore starting current of initial window opening is effectively reduced by reducing the contact area, and the service life of a motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of window sealing, in particular to a sealing pad and a window sealing device. Background Art

[0002] In our company's prior patent, "A Door Cover Structure for an Automated Centrifuge," patent number 201922209335.5, the window seal utilizes a plate-shaped silicone gasket. While this has the advantages of simple manufacturing and assembly processes, its disadvantages are the high cost and high silicone consumption. The sealing performance is limited by the flatness of other sheet metal components, resulting in occasional window leaks and condensation. Furthermore, the large contact area and strong adsorption force double the motor's starting current when the window is first opened, shortening the motor's service life. Therefore, a new gasket is urgently needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a sealing gasket and a window sealing device.

[0004] The utility model provides a sealing gasket and a window sealing device, comprising a sealing gasket body and an installation mechanism for installing the sealing gasket; a sealing groove with an L-shaped cross section is formed around the edge of the lower surface of the sealing gasket body; a sealing ring is installed at the top of the inner wall of the sealing groove; the inner and outer sides of the sealing ring respectively form angles a and b with the top of the inner wall of the sealing groove, and the angles a and b are both acute angles;

[0005] The height c of the sealing ring is greater than the side height d of the sealing groove. The inner side wall of the sealing ring and the inner wall of the sealing groove form a sealing cavity. The width e of the sealing ring is smaller than the width f of the sealing cavity.

[0006] In some embodiments, the outer edge of the sealing ring coincides with the outer edge of the sealing groove.

[0007] In some embodiments, a fitting groove is provided at the top of the inner wall of the sealing groove, and a fitting ring is provided around the center of the top of the sealing ring to match the fitting groove.

[0008] In some embodiments, there are multiple fitting grooves, and the spacing width g between the multiple fitting grooves is greater than the width e of the sealing ring.

[0009] In some embodiments, a mounting hole is opened in the center of the sealing gasket body, and a right-angle platform is formed on the sealing gasket body through the opening of the mounting hole.

[0010] The mounting mechanism includes a lower pressure plate, with a cold plate positioned in the center of the lower pressure plate to fit within the mounting hole in the gasket body. A clamping plate for clamping the gasket body is positioned on the side of the cold plate away from the lower pressure plate. The size and shape of the clamping plate are compatible with the window, and its outer contour is positioned below the sealing groove. A window mechanism is provided on the lower pressure plate.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The utility model achieves a sealing effect by making the height c of the sealing ring greater than the side height d of the sealing groove, that is, the sealing ring is deformed and contacts the lower window plate. Since only the deformed sealing ring of the sealing gasket contacts the lower window plate, the starting current of the first window opening is effectively reduced by reducing the contact area, thereby extending the service life of the motor.

[0013] 2. The utility model forms a sealing cavity through the inner wall of the sealing ring and the inner wall of the sealing groove, which is located below the sealing groove in conjunction with the outer contour of the pressing plate. During centrifugation, the pressurized gas in the centrifugal cavity will overflow from the gap between the pressing plate and the lower window and fill the sealing cavity. The pressurized gas will squeeze the sealing ring, making it closer to the lower window plate to achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the sealing gasket structure of Example 1 of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the sealing ring according to the first embodiment of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the sealing ring according to the second embodiment of the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of the second embodiment of the present invention after multiple sealing rings are installed;

[0019] Figure 5 This is a structural diagram of the window of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the first embodiment of the present invention when installed on a window.

[0021] In the figure: 1. Sealing gasket body; 2. Sealing groove; 3. Sealing ring; 4. Fitting groove; 5. Fitting ring; 6. Sealing cavity; 7. Mounting hole; 8. Right-angle platform; 9. Mounting mechanism; 91. Lower pressure plate; 92. Cold insulation plate; 93. Clamping plate. DETAILED DESCRIPTION

[0022] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0023] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] Example 1:

[0025] See also Figure 1 - Figure 2 and Figure 5 - Figure 6 The utility model of the sealing gasket and the window sealing device include a sealing gasket body 1, a sealing groove 2 with an L-shaped cross section is opened around the edge of the lower surface of the sealing gasket body 1, a sealing ring 3 is installed on the top of the inner wall of the sealing groove 2, and the inner and outer sides of the sealing ring 3 respectively form an angle a and an angle b with the top of the inner wall of the sealing groove 2, and the angle a and the angle b are both set at acute angles. Furthermore, the cross section of the sealing ring 3 is inwardly arc-shaped and cantilevered.

[0026] The height c of the sealing ring 3 is greater than the side height d of the sealing groove 2 . The inner side wall of the sealing ring 3 and the inner wall of the sealing groove 2 form a sealing cavity 6 . The width e of the sealing ring 3 is smaller than the width f of the sealing cavity 6 .

[0027] The mounting mechanism 9 includes a lower pressure plate 91, a cold-insulation plate 92 adapted to the mounting hole 7 in the sealing gasket body 1 is provided in the center of the lower pressure plate 91, and a clamping plate 93 for clamping the sealing gasket body 1 is provided on the side of the cold-insulation plate 92 away from the lower pressure plate 91. The clamping plate 93 is mounted on the lower pressure plate 91 by bolts.

[0028] The size and shape of the pressing plate 93 are adapted to the window, and the outer contour of the pressing plate 93 is located below the sealing groove 2 .

[0029] A mounting hole 7 is provided in the center of the sealing gasket body 1. A right-angle platform 8 is formed on the sealing gasket body 1 through the opening of the mounting hole 7. The right-angle platform 8 is located in the mounting hole 7. Its main function is to facilitate the pressing and fixing of the clamping plate 93, and to facilitate process positioning to reduce the difficulty of assembly.

[0030] A window mechanism is provided on the lower pressure plate 91, wherein the window mechanism is specifically described in the prior patent entitled: A door cover structure on an automated centrifuge, with patent number: 201922209335.5, and will not be repeated here.

[0031] The outer edge of the sealing ring 3 coincides with the outer edge of the sealing groove 2 .

[0032] In this example:

[0033] The sealing gasket is formed by hot-melting silicone particles and injecting them into an aluminum mold at constant pressure, followed by cooling. It has the characteristics of simple process, low cost, and good molding quality. When in use, the window mechanism carries the mounting mechanism 9 and the sealing gasket and is installed in the window. The lower pressure plate 91 will exert downward pressure on the sealing gasket under the action of the window mechanism. Because the height c of the sealing ring 3 is greater than the side height d of the sealing groove 2, the sealing ring 3 deforms and contacts the lower window plate to achieve a sealing effect. Since only the deformed sealing ring 3 of the sealing gasket contacts the lower window plate, the starting current of the first window opening is effectively reduced by reducing the contact area, thereby extending the service life of the motor.

[0034] The inner wall of the sealing ring 3 and the inner wall of the sealing groove 2 form a sealing cavity 6, which is located below the sealing groove 2 in conjunction with the outer contour of the pressing plate 93. During centrifugation, the pressurized gas in the centrifugal cavity will overflow from the gap between the pressing plate 93 and the lower window and fill the sealing cavity 6. The pressurized gas will squeeze the sealing ring 3, making them closer to the lower window plate to achieve a better sealing effect; the mounting hole 7 is located in the center of the sealing gasket body 1. Its main function is to reduce the glue shaping and reduce the cost, thereby making room for the cold preservation plate 92.

[0035] Example 2:

[0036] See also Figure 3As a further improvement of the first embodiment, the difference from the first embodiment is that a fitting groove 4 is provided on the top of the inner wall of the sealing groove 2, and a fitting ring 5 is provided around the top center of the sealing ring 3 to match the fitting groove 4:

[0037] In this example:

[0038] Because the sealing ring 3 needs to be deformed repeatedly during use, the sealing ring 3 in the sealing gasket will experience fatigue wear after long-term use, which will lead to a reduction in the sealing effect; therefore, the sealing ring 3 and the sealing gasket body 1 are detachably connected through the fitting ring 5 and the fitting groove 4. When the original sealing ring 3 is damaged, a new sealing ring 3 can be replaced to ensure the sealing effect.

[0039] See also Figure 4 Furthermore, there are multiple fitting grooves 4, and the spacing width g between the multiple fitting grooves 4 is greater than the width e of the sealing ring 3. In this technical solution, multiple sealing rings 3 can be installed on the sealing gasket body 1 to form multiple sealing cavities 6, thereby further increasing the sealing effect.

[0040] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements based on the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A sealing gasket, comprising a sealing gasket body (1), characterized in that: A sealing groove (2) with an L-shaped cross section is formed around the edge of the lower surface of the sealing gasket body (1), and a sealing ring (3) is installed on the top of the inner wall of the sealing groove (2). The inner and outer sides of the sealing ring (3) respectively form an angle a and an angle b with the top of the inner wall of the sealing groove (2), and the angle a and the angle b are both set at acute angles; The height c of the sealing ring (3) is greater than the side height d of the sealing groove (2); the inner side wall of the sealing ring (3) and the inner wall of the sealing groove (2) form a sealing cavity (6); and the width e of the sealing ring (3) is less than the width f of the sealing cavity (6).

2. The sealing gasket according to claim 1, characterized in that: The outer edge of the sealing ring (3) coincides with the outer edge of the sealing groove (2).

3. The sealing gasket according to claim 1, characterized in that: A fitting groove (4) is provided at the top of the inner wall of the sealing groove (2), and a fitting ring (5) adapted to the fitting groove (4) is provided around the center of the top of the sealing ring (3).

4. The sealing gasket according to claim 3, characterized in that: There are multiple fitting grooves (4), and the spacing width g between the multiple fitting grooves (4) is greater than the width e of the sealing ring (3).

5. A sealing gasket according to any one of claims 1 to 4, characterized in that: A mounting hole (7) is provided at the center of the sealing gasket body (1), and a right-angle platform (8) is formed on the sealing gasket body (1) through the opening of the mounting hole (7).

6. A window sealing device comprising the sealing gasket according to claim 5 and a mounting mechanism (9) for mounting the sealing gasket, characterized in that: The mounting mechanism (9) includes a lower pressing plate (91), a cold-insulating plate (92) adapted to the mounting hole (7) in the sealing gasket body (1) is provided at the center of the lower pressing plate (91), and a clamping plate (93) for clamping the sealing gasket body (1) is provided on the side of the cold-insulating plate (92) away from the lower pressing plate (91).

7. A window sealing device according to claim 6, characterized in that: The size and shape of the pressing plate (93) are adapted to the window, and the outer contour of the pressing plate (93) is located below the sealing groove (2).

8. A window sealing device according to claim 7, characterized in that: The lower pressing plate (91) is provided with a window mechanism.

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