Sealing ring

Abstract

The present invention relates to a sealing ring (3), which is made of elastic material and is used for sealing between at least two components (1, 2), wherein the sealing ring (3) forms sealing areas respectively relative to the at least two components (1, 2), and is characterized in that at least two supporting parts (31) are formed on the sealing areas by arranging grooves respectively.

Description

Technical Field

[0001] The present invention relates to sealing technology, in particular to a sealing ring which is made of elastic material and is used for sealing between two components. Background Art

[0002] The most common sealing ring design on the market today is the O-ring. It provides excellent sealing and shock absorption in environments with oil resistance, acid and alkali resistance, abrasion resistance, and chemical corrosion resistance. Therefore, the O-ring is the most widely used seal in hydraulic and pneumatic transmission systems. However, when the clamping force reaches a certain level, the O-ring is prone to deformation and may be squeezed out of the sealing position. There are also some special-shaped sealing ring structures on the market. Currently, special-shaped sealing rings with polygonal designs are very reliable for applications where the installation space is made of metal materials. This is because the relatively large preload force can cause the seal to deform significantly to achieve a seal, thereby preventing leakage.

[0003] However, due to the need to reduce costs, design considerations are shifting the seal installation space to plastic. For example, in current engine hydraulic camshaft phasing systems, centrally mounted oil control valves and centrally mounted solenoids often utilize plastic coil housings. This means that at least part of the solenoid seal installation space is plastic. However, this also presents new challenges. First, plastic lacks the strength of metal. Second, in high-temperature environments, plastic easily deforms under the combined effects of high temperatures and seal deformation. Consequently, under the combined effects of high preload and high temperatures, the plastic components that form the seal installation space can deform. This presents two risks: first, reduced sealing performance, potentially leading to leakage; second, reduced system performance, such as plastic deformation causing the push rod to move backward, preventing the desired stroke. Furthermore, the seal can deform erratically under the impact of high and low temperatures. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a sealing ring, which can be particularly used to seal components with poor heat dissipation performance and low strength, such as plastic components, and the sealing ring will be in a more stable state after assembly.

[0005] This technical problem is solved by a sealing ring, which is made of elastic material and is used for sealing between at least two components, wherein the sealing ring forms a sealing area relative to the at least two components, wherein at least two support parts are formed on the sealing area by arranging grooves.

[0006] Within the scope of the present invention, the installation space for the sealing ring is composed of at least two components, which can be made of either metal or plastic. The sealing ring is made of an elastic material such as rubber. Here, the sealing zone refers to the sealing contact area where the sealing ring is squeezed by the components forming the installation space, causing elastic deformation of the sealing ring, generating a contact pressure greater than the internal pressure of the sealing medium, thereby achieving a seal. Therefore, depending on the specific design, particularly the design of the installation space for the sealing ring, the sealing zone can be formed on various surface areas of the sealing ring. For example, for radial sealing, the sealing zone is formed on both the radially outer and radially inner sides of the sealing ring; for axial sealing, the sealing zone is formed on both axial sides of the sealing ring. Furthermore, the possibility of the sealing zone being formed on both the circumferential surface and the axial end face of the sealing ring is not excluded. Here and below, the terms "radial," "axial," and "circumferential" refer to the center axis of the sealing ring. Furthermore, the number of support portions on each sealing zone can be determined based on the size of the sealing zone or the specific dimensions of the installation space for the sealing ring. Larger sizes can require a relatively large number of support portions, such as three, four, or more. Conversely, smaller sizes can require only two support portions. The sealing ring according to the present invention can be used for static sealing, and also can be used for dynamic sealing, for example reciprocating motion sealing.In addition, the sealing ring according to the present invention can not only be used alone, but also can be used for combined sealing devices.

[0007] In the design of the present invention, on the one hand, by providing at least two support portions on the sealing area, the sealing ring maintains a more stable state after installation. On the other hand, due to the grooves formed between the support portions, when the sealing ring is squeezed, the elastic material can deform into the groove area. This reduces the preload force after assembly, allowing the sealing ring to be preloaded with a smaller preload force, thereby preventing significant deformation of components, especially plastic components. At the same time, because the elastic material can deform into the groove area, concentrated material accumulation is avoided, which facilitates heat dissipation, effectively preventing the formation of high temperatures and thereby alleviating deformation of components, especially plastic components, caused by high temperatures.

[0008] In a preferred embodiment, the support portions are configured as peaks extending parallel to one another. For example, in the case of radial sealing, the support portions are protrusions extending side by side along the radially outer and inner sides of the sealing ring, with the tops of the protrusions generally facing radially outward or radially inward depending on their radial positions. In the case of axial sealing, the support portions are concentrically arranged annular protrusions formed on the axial end surface of the sealing ring.

[0009] In this case, the peaks advantageously have rounded tops.

[0010] In an advantageous embodiment, the sealing area is formed radially outside and radially inside the sealing ring. This applies in particular to radial sealing.

[0011] In this case, it can be provided that the support portion in the radially outer sealing area extends radially outward, and the support portion in the radially inner sealing area extends radially inward, so as to achieve a stable support function after installation.

[0012] In an alternative embodiment, the sealing area is formed on both axial sides of the sealing ring, which is particularly suitable for axial sealing.

[0013] In this case, it can be provided that the support portion extends in the axial direction away from the elastic material, thereby facilitating the sealing ring to be stably maintained in the installed position after installation.

[0014] Furthermore, the sealing ring preferably includes connection areas that connect the corresponding ends of each sealing zone, with the connection areas protruding in a direction away from the elastic material. For radial sealing, the ends of the sealing zone refer to the axial ends of the sealing zone, with the connection areas formed on both axial sides of the sealing zone. For axial sealing, the ends of the sealing zone refer to the radial ends of the sealing zone, with the connection areas formed on the radially inner and outer sides of the sealing zone. This ensures that the sealing ring maintains a certain strength and high durability.

[0015] In this case, a transition area that is recessed toward the inside of the elastic material can be advantageously formed between the sealing area and the connecting area. Thus, when the support portion in the sealing area is compressed, particularly when the side support portion of the sealing area is compressed, the elastic material can be deformed in the recessed transition area, thereby preventing material accumulation.

[0016] In summary, the present invention improves the cross-sectional shape of the sealing ring, namely, by providing at least two support portions in the sealing area, making the sealing ring more stable after installation. Furthermore, when the sealing ring is squeezed, the elastic material can deform into the groove area between the support portions. This reduces the preload force after assembly, thus preventing significant deformation of components, particularly plastic components. Furthermore, it avoids concentrated accumulation of material, facilitating heat dissipation and effectively preventing the formation of high temperatures, thereby alleviating deformation of components, particularly plastic components, caused by high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are schematically described below with reference to the accompanying drawings.

[0018] Figure 1 is a cross-sectional view of a centrally mounted electromagnet with a sealing ring according to a preferred embodiment,

[0019] Figure 2is based on Figure 1 A perspective view of the sealing ring of the preferred embodiment, and

[0020] Figure 3 is based on Figure 1 Cross section of the sealing ring of the preferred embodiment. DETAILED DESCRIPTION

[0021] Figure 1 FIG. 1 shows a cross-sectional view of a central electromagnet having a sealing ring 3 according to a preferred embodiment of the present invention. Figure 1 As shown, the sealing ring 3 is used to seal between the coil housing 1 and the cover 2 of the central electromagnet, wherein the coil housing 1 and the cover 2 squeeze the sealing ring 3 in the radial direction, so that the main sealing areas of the sealing ring 3 are located at the outer periphery and the inner periphery of the sealing ring 3.

[0022] Figure 2 and Figure 3 The three-dimensional diagram and the cross-sectional diagram of the sealing ring 3 are shown respectively. It should be noted that Figure 3 The cross section shown in Figure 1 The cross section shown in FIG is rotated 90°, that is, the reference seal ring 3 is in the reference Figure 3 The cross section shown is squeezed from both the left and right sides.

[0023] Combine Figure 2 and Figure 3 It can be seen that the sealing ring 3 according to this embodiment has a plurality of outer and inner circumferences (i.e. Figure 3 Two support parts 31 are formed by setting grooves in the main sealing areas on the left and right sides of the sealing ring 3. When the sealing ring 3 is squeezed, the elastic material can be deformed into the groove area between the support parts, and it is beneficial to keep the sealing ring 3 stably in the installation position. The support part 31 in the radially outer sealing area extends toward the radial outside, and the support part 31 in the radially inner sealing area extends toward the radial inside. The sealing ring 3 also has a connecting area 33 that connects the corresponding ends of the two sealing areas, so that the sealing area and the connecting area 33 form a closed shape. Figure 3 As shown, the connection area 33 protrudes toward the outside of the elastic material, thereby enhancing the strength of the sealing ring 3. In addition, a transition area 32 is formed between the sealing area and the connection area 33, which is recessed toward the inside of the elastic material. Therefore, when the support portion 31 is squeezed, the elastic material can be deformed in the recessed transition area 32, preventing material accumulation. Figure 2 As can be seen in the figure, the support portion 31 forms a peak or a protrusion that extends side by side around the radial outer side and the radial inner side of the sealing ring 3.

[0024] While the foregoing descriptions illustrate possible embodiments, it should be understood that numerous variations exist through combinations of all known and other technical features and implementations readily conceivable to a skilled artisan. Furthermore, it should be understood that the exemplary embodiments serve merely as examples and in no way limit the scope, application, or configuration of the present invention. The foregoing descriptions are intended primarily to provide a skilled artisan with technical guidance for implementing at least one exemplary embodiment. Various modifications, particularly regarding the functionality and structure of components, are possible without departing from the scope of the claims.

[0025] Reference Signs List

[0026] 1 First component

[0027] 2 Second component

[0028] 3 Sealing ring

[0029] 31 Support

[0030] 32 Transition Zone

[0031] 33 Connection Area

Claims

1. A sealing ring (3), which is made of an elastic material and is used to seal between at least two components (1, 2), wherein: The sealing ring (3) forms sealing areas respectively relative to the at least two components (1, 2), and is characterized in that at least two supporting parts (31) are formed on the sealing areas by arranging grooves respectively, and the sealing ring (3) also has a connecting area (33) connecting the various sealing areas, the connecting area (33) protrudes in a direction away from the elastic material, and a transition area (32) recessed toward the inner side of the elastic material is formed between the sealing area and the connecting area (33), the sealing area is formed on the radial outer side and the radial inner side of the sealing ring (3), so that the sealing ring (3) has an axial sealing function, and the connecting area (33) is formed on both axial sides of the sealing ring (3), so that the sealing ring (3) has a radial sealing function.

2. The sealing ring according to claim 1, characterized in that: The support portions (31) are configured as peaks extending parallel to each other.

3. The sealing ring according to claim 2, characterized in that: The peak portion has a rounded peak top.

4. The sealing ring according to claim 1, characterized in that: The support portion (31) in the radially outer sealing area extends toward the radially outer side, and the support portion (31) in the radially inner sealing area extends toward the radially inner side.

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