Framework oil seal sealing element

Abstract

The utility model discloses a framework oil seal sealing element which comprises an annular framework, an annular installation groove is reserved in the inner annular face of the annular framework, annular assembling grooves are formed in the positions, aligned with the two side faces, of the outer annular face of the annular framework, and a first annular sealing ring is clamped in the annular installation groove. The inner ring face of the first annular sealing ring protrudes out of the inner ring face of the annular framework, and the section of the first annular sealing ring and the section of the annular installation groove are both in a T shape. Second annular sealing rings are arranged in the annular assembling grooves in a sleeved mode, the inner ring diameter of each second annular sealing ring is smaller than the diameter of the corresponding annular assembling groove under the condition that external force is not exerted on the second annular sealing rings, and the outer ring diameter of each second annular sealing ring is larger than the outer ring diameter of the annular framework. The utility model has better sealing performance, is not easy to leak, and can effectively solve the technical problem that plane permeation is easy to occur.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing components, and in particular relates to a skeleton oil seal component. Background Art

[0002] Oil seal is a common name for general seals, which simply means the seal of lubricating oil. It is a mechanical component used to seal grease (oil is the most common liquid substance in the transmission system, and also refers to general liquid substances). It isolates the parts that need lubrication from the output parts in the transmission parts to prevent the leakage of lubricating oil. The seals used for static seals and dynamic seals (generally reciprocating motion) are called oil seals. The representative form of oil seal is TC oil seal, which is a double-lip oil seal with self-tightening spring completely covered with rubber. The oil seal generally refers to this TC skeleton oil seal.

[0003] The Chinese patent with the announcement number CN207246416U discloses an oil seal, including a housing, a first liner, a second liner, a rubber pad, an upper lip, and a lower lip; the first liner, the upper lip, the second liner, the lower lip, and the rubber pad are sequentially stacked on the housing; the housing and the rubber pad are integrally vulcanized and bonded, the second liner is between the upper lip and the lower lip, and the second liner is connected to the upper lip and the lower lip by fluororubber on the outside. This solution can solve the technical problems of how to avoid deformation of the rubber pad when assembling with the housing and plane penetration between the liner and the sealing sheet.

[0004] However, the oil seal has the technical problem of being prone to plane penetration. Utility Model Content

[0005] The utility model aims to provide a skeleton oil seal to solve the technical defect that the existing oil seal is easy to penetrate in the plane.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A skeleton oil seal comprises an annular skeleton, an annular installation groove is reserved on the inner ring surface of the annular skeleton, and annular fitting grooves are arranged on the outer ring surface of the annular skeleton aligned with the two side surfaces thereof.

[0008] A first annular sealing ring is clamped in the annular installation groove, the inner ring surface of the first annular sealing ring protrudes from the inner ring surface of the annular frame, and the cross-sections of the first annular sealing ring and the annular installation groove are both T-shaped.

[0009] A second annular sealing ring is mounted in each of the annular fitting grooves. When not subject to external force, the inner ring diameter of the second annular sealing ring is smaller than the diameter of the annular fitting groove, and the outer ring diameter of the second annular sealing ring is larger than the outer ring diameter of the annular frame.

[0010] As a further solution of the utility model, annular grooves are reserved on both side surfaces of the annular skeleton.

[0011] As a preferred solution of the utility model, a plurality of integrally formed reinforcing ribs are evenly arranged in the annular groove.

[0012] As a preferred solution of the present utility model, the annular skeleton is a stainless steel ring.

[0013] As a further preferred solution of the present invention, the first annular sealing ring and the second annular sealing ring are both annular rubber sealing rings.

[0014] As a further preferred solution of the present invention, the second annular sealing ring is symmetrically distributed on both sides of the first annular sealing ring.

[0015] Compared with the prior art, the utility model provides a skeleton oil seal with the following beneficial effects: the first annular sealing ring is not easy to separate from the annular skeleton under the restriction of the annular mounting groove, and the second annular sealing ring is installed in the annular fitting groove at the same time, and when not affected by external force, the inner ring diameter of the second annular sealing ring is smaller than the diameter of the annular fitting groove, and the outer ring diameter of the second annular sealing ring is larger than the outer ring diameter of the annular skeleton, so that the second annular sealing ring is not easy to separate from the annular skeleton, and during installation, under the action of the second annular sealing ring, the outer ring surface of the annular skeleton and the mounting cavity have good sealing performance, and the inner ring surface of the annular skeleton and the sealed component have good sealing performance, and are not easy to leak, which can effectively solve the technical problem of easy plane penetration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment. Obviously, the drawings described below are only examples of the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The structure of the embodiment of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The explosion structure of the utility model embodiment is shown in FIG. Figure 1 ;

[0019] Figure 3 The structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 The explosion structure of the utility model embodiment is shown in FIG. Figure 2 .

[0021] Reference numerals:

[0022] 1. annular frame; 101. annular mounting groove; 102. annular mounting groove; 103. annular groove; 104. reinforcing rib;

[0023] 2. The first annular sealing ring;

[0024] 3. Second annular sealing ring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0028] See attached Figure 1-4 As shown, a skeleton oil seal seal of an embodiment of the utility model comprises an annular skeleton 1, an annular installation groove 101 is reserved on the inner ring surface of the annular skeleton 1, and annular fitting grooves 102 are opened on the outer ring surface of the annular skeleton 1 aligned with its two side surfaces.

[0029] A first annular sealing ring 2 is clamped in the annular installation groove 101 . The inner surface of the first annular sealing ring 2 protrudes from the inner surface of the annular frame 1 . The cross sections of the first annular sealing ring 2 and the annular installation groove 101 are both T-shaped.

[0030] The annular fitting grooves 102 are each fitted with a second annular sealing ring 3 . In the absence of external force, the inner ring diameter of the second annular sealing ring 3 is smaller than the diameter of the annular fitting groove 102 , and the outer ring diameter of the second annular sealing ring 3 is larger than the outer ring diameter of the annular frame 1 .

[0031] In the skeleton oil seal seal of the above technical scheme, the first annular sealing ring 2 is not easy to separate from the annular skeleton 1 under the restriction of the annular mounting groove 101; at the same time, the second annular sealing ring 3 is not easy to separate from the annular skeleton 1, and there is good sealing between the outer ring surface of the annular skeleton 1 and the mounting cavity, and there is good sealing between the inner ring surface of the annular skeleton 1 and the sealed component, which is not easy to leak, and can effectively solve the technical problem of easy plane penetration.

[0032] In order to reduce the manufacturing cost of the annular skeleton 1 , annular grooves 103 are reserved on both side surfaces of the annular skeleton 1 . The reserved annular grooves 103 can save materials for the annular skeleton 1 , thereby reducing the manufacturing cost of the annular skeleton 1 .

[0033] In order to ensure the stress-bearing strength of the annular frame 1 , a number of integrally formed reinforcing ribs 104 are evenly arranged in the annular groove 103 .

[0034] In order to ensure the service life of the skeleton oil seal, the annular skeleton 1 is a stainless steel ring.

[0035] In order to ensure the sealing effect of the first annular sealing ring 2 and the second annular sealing ring 3, the first annular sealing ring 2 and the second annular sealing ring 3 are both annular rubber sealing rings.

[0036] In order to ensure the overall sealing performance of the skeleton oil seal, the second annular sealing ring 3 is symmetrically distributed on both sides of the first annular sealing ring 2 .

[0037] When the embodiment of the utility model is used, the outer ring surface of the annular skeleton 1 is fixed in the installation cavity, and at the same time, it is ensured that there is no gap between the outer ring surface of the second annular sealing ring 3 and the installation cavity, and the sealed part is inserted into the inner ring of the first annular sealing ring 2 to ensure that there is no gap between the inner ring of the first annular sealing ring 2 and the sealed part.

[0038] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A skeleton oil seal, characterized in that: It comprises an annular frame (1), wherein an annular mounting groove (101) is reserved on the inner annular surface of the annular frame (1), and annular fitting grooves (102) are provided on the outer annular surface of the annular frame (1) aligned with both side surfaces thereof; A first annular sealing ring (2) is clamped in the annular installation groove (101), an inner ring surface of the first annular sealing ring (2) protrudes from an inner ring surface of the annular frame (1), and cross sections of the first annular sealing ring (2) and the annular installation groove (101) are both T-shaped; A second annular sealing ring (3) is mounted in each of the annular fitting grooves (102); in the absence of external force, the inner ring diameter of the second annular sealing ring (3) is smaller than the diameter of the annular fitting groove (102), and the outer ring diameter of the second annular sealing ring (3) is larger than the outer ring diameter of the annular frame (1).

2. A skeleton oil seal according to claim 1, characterized in that: Annular grooves (103) are reserved on both side surfaces of the annular frame (1).

3. A skeleton oil seal according to claim 2, characterized in that: A plurality of integrally formed reinforcing ribs (104) are arranged at equal intervals in the annular groove (103).

4. A skeleton oil seal according to claim 2, characterized in that: The annular frame (1) is a stainless steel ring.

5. A skeleton oil seal according to claim 4, characterized in that: The first annular sealing ring (2) and the second annular sealing ring (3) are both annular rubber sealing rings.

6. A skeleton oil seal according to claim 5, characterized in that: The second annular sealing ring (3) is symmetrically distributed on both sides of the first annular sealing ring (2).

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