Sealing ring and assembly structure thereof

Abstract

The utility model relates to a sealing ring and an assembling structure thereof, the sealing ring comprises a ring body which is annular on the whole, the inner side of the ring body is bent downwards to form a blocking edge part, the blocking edge part enables the inner side wall of the ring body to form a slope surface, a plurality of ring grooves are formed in the lower end face of the ring body at intervals, and the ring grooves are located on the outer side of the blocking edge part. The assembly structure comprises a sealing ring, a rotating shaft, a mounting seat and a middle shaft, the middle shaft penetrates through the rotating shaft, a bearing bush is arranged between the rotating shaft and the middle shaft, the mounting seat is fixed to the rotating shaft in a buckled mode and tightly presses the sealing ring to the end of the rotating shaft, and the sealing ring is any one of the sealing rings. A conventional annular plane sealing ring is improved, the blocking edge part is arranged on the inner side and can penetrate into a gap for sealing, the annular groove is formed in the end face, when the sealing ring is extruded, the two sides of the groove can better extend outwards, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing structures, and relates to a sealing ring and an assembly structure thereof, in particular to a grease sealing structure used at an extreme position inside a joint motor module. Background Art

[0002] There are many internal component structures in the joint motor module, and each component has different shapes and structures. Many components do not have normal planar contact, and there will be many special-shaped gaps. Conventional sealing rings installed in the above-mentioned special-shaped gaps cannot fit completely with the gaps and cannot provide a good sealing effect. It is easy for the lubricating oil inside the joint motor module to leak, affecting the service life of the product. Utility Model Content

[0003] In order to solve the above technical problems, the first purpose of the utility model is to provide a sealing ring with a simple structure and meeting the requirements of sealing special-shaped gaps. The second purpose of the utility model is to provide a sealing ring assembly structure.

[0004] In order to achieve the above first utility model purpose, the utility model adopts the following technical solutions:

[0005] A sealing ring comprises a ring body which is annular as a whole. The inner side of the ring body is bent downward to form a retaining edge. The retaining edge forms a slope surface on the inner side wall of the ring body. The lower end surface of the ring body is provided with a plurality of annular grooves at intervals, and the annular grooves are located on the outer side of the retaining edge.

[0006] As a preferred solution: a circle of ridges is further provided on the outer side of the lower end surface of the ring body, and the height of the ridges is smaller than the depth of the annular groove.

[0007] As a preferred solution: the lower end of the retaining edge is lower than the lower end of the convex ridge.

[0008] In order to achieve the above second utility model purpose, the utility model adopts the following technical solutions:

[0009] A sealing ring assembly structure includes a sealing ring, a rotating shaft, a mounting seat and an intermediate shaft, wherein the intermediate shaft passes through the rotating shaft, and a bearing shell is provided between the rotating shaft and the intermediate shaft, the mounting seat is snap-fitted and fixed on the rotating shaft, and the mounting seat presses the sealing ring against the end of the rotating shaft, and the sealing ring is any of the sealing rings described above.

[0010] As a preferred solution: the mounting seat is disc-shaped with a through hole in the middle, and a snap-fitting convex ring is provided on the lower end surface of the mounting seat, and the snap-fitting convex ring is interference-fitted with the end of the rotating shaft.

[0011] As a preferred solution: the inner diameter of the snap-fitting convex ring is larger than the inner diameter of the through hole, and a step limiting surface for pressing the sealing ring is formed at the connection between the through hole and the snap-fitting convex ring.

[0012] As a preferred solution: the outer edge of the end of the rotating shaft is provided with a chamfer, and the convex edge of the sealing ring is clamped between the chamfer of the rotating shaft and the inner wall of the mounting seat.

[0013] As a preferred solution: the inner side of the retaining edge of the sealing ring abuts against the outer wall of the intermediate shaft.

[0014] The utility model improves a conventional annular plane sealing ring, wherein a retaining edge is arranged on the inner side and can extend into the gap for sealing, and an annular groove is arranged on the end face, so that when the sealing ring is squeezed, both sides of the groove can extend outwards better, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding 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 a limitation on the present application.

[0016] Figure 1 and Figure 2 They are respectively structural schematic diagrams of the front and back sides of the sealing ring of the utility model;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the sealing ring of the utility model;

[0018] Figure 4 This is a schematic diagram of the sealing ring assembly structure of the utility model;

[0019] Figure 5 It is a partial enlarged structural schematic diagram of the sealing ring assembly of the utility model.

[0020] The reference numerals in the drawings are: 100, sealing ring; 1001, retaining edge; 1002, ring groove; 6, rotating shaft; 60, bearing shell; 7, intermediate shaft; 61, mounting seat; 610, snap-fitting convex ring; 611, step limiting surface. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 it can be 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 in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] like Figures 1 to 3 A sealing ring is shown, comprising a ring body in an overall ring shape, the inner side of the ring body is bent downward to form a retaining edge 1001, the retaining edge 1001 forms a sloped surface on the inner side wall of the ring body, and a plurality of annular grooves 1002 are provided at intervals on the lower end surface of the ring body, and the annular grooves 1002 are located on the outer side of the retaining edge 1001. A circle of ridges 1003 is also provided on the outer side of the lower end surface of the ring body, and the height of the ridges 1003 is less than the depth of the annular grooves 1002. The lower end of the retaining edge 1001 is lower than the lower end of the ridges 1003.

[0029] The structure of the retaining edge can improve the sealing effect on the inner side of the sealing ring, the setting of the ridge can improve the sealing effect on the inner side of the sealing ring, and the middle ring groove enables the ring bodies on both sides of the ring groove to extend better when the sealing ring is compressed again, thereby improving the overall sealing effect.

[0030] like Figure 4 and Figure 5 As shown, a sealing ring assembly structure includes the sealing ring 100 of the above structure, the rotating shaft 6, the mounting seat 61 and the intermediate shaft 7, the intermediate shaft 7 passes through the rotating shaft 6, and a bearing 60 is provided between the rotating shaft 6 and the intermediate shaft 7, the mounting seat 61 is fastened and fixed on the rotating shaft 6, and the mounting seat 61 presses the sealing ring 100 against the end of the rotating shaft 6.

[0031] The mounting seat 61 is in the shape of a disk, with a through hole in the middle, and a clamping convex ring 610 is provided on the lower end surface of the mounting seat 61, and the clamping convex ring 610 is interference fit with the end of the rotating shaft 6. The inner diameter of the clamping convex ring 610 is larger than the inner diameter of the through hole, and a step limit surface 611 for pressing the sealing ring 100 is formed at the connection between the through hole and the clamping convex ring 610.

[0032] The outer edge of the end of the rotating shaft 6 is chamfered, and the ridge 1003 of the sealing ring 100 is clamped between the chamfer of the rotating shaft 6 and the inner wall of the mounting seat 61. The inner side of the retaining edge 1001 of the sealing ring 100 abuts against the outer wall of the intermediate shaft 7.

[0033] The utility model improves the conventional annular plane sealing ring, and provides a retaining edge portion on the inner side, which can extend into the gap between the rotating shaft and the intermediate shaft for sealing, and provides an annular groove on the end face, so that when the sealing ring is squeezed, the two sides of the groove can extend outward better, thereby improving the sealing effect. In addition, a convex ridge is provided on the outer side of the annular groove, and the convex ridge can extend into the gap between the rotating shaft and the mounting seat, thereby further improving the sealing performance.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0035] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sealing ring, comprising a ring body which is generally annular, characterized in that: The inner side of the ring body is bent downward to form a retaining edge (1001), and the retaining edge (1001) forms a sloped surface on the inner side wall of the ring body. The lower end surface of the ring body is provided with a plurality of annular grooves (1002) at intervals, and the annular grooves (1002) are located on the outer side of the retaining edge (1001).

2. A sealing ring according to claim 1, characterized in that: A circle of ridges (1003) is also provided on the outer side of the lower end surface of the ring body, and the height of the ridges (1003) is smaller than the depth of the annular groove (1002).

3. A sealing ring according to claim 2, characterized in that: The lower end of the retaining edge portion (1001) is lower than the lower end of the convex ridge (1003).

4. A sealing ring assembly structure, comprising a sealing ring (100), a rotating shaft (6), a mounting seat (61) and an intermediate shaft (7), wherein the intermediate shaft (7) passes through the rotating shaft (6), and a bearing bush (60) is provided between the rotating shaft (6) and the intermediate shaft (7), characterized in that: The mounting seat (61) is fastened and fixed on the rotating shaft (6), and the mounting seat (61) presses the sealing ring (100) against the end of the rotating shaft (6), and the sealing ring (100) is the sealing ring according to any one of claims 1 to 3.

5. A sealing ring assembly structure according to claim 4, characterized in that: The mounting seat (61) is in the shape of a disk and has a through hole in the middle. A clamping convex ring (610) is provided on the lower end surface of the mounting seat (61), and the clamping convex ring (610) is interference-fitted with the end of the rotating shaft (6).

6. A sealing ring assembly structure according to claim 5, characterized in that: The inner diameter of the snap-fitting convex ring (610) is greater than the inner diameter of the through hole, and a step limiting surface (611) for pressing the sealing ring (100) is formed at the connection between the through hole and the snap-fitting convex ring (610).

7. A sealing ring assembly structure according to claim 4, characterized in that: The outer edge of the end of the rotating shaft (6) is provided with a chamfer, and the convex edge (1003) of the sealing ring (100) is clamped between the chamfer of the rotating shaft (6) and the inner wall of the mounting seat (61).

8. The sealing ring assembly structure according to claim 4, characterized in that: The inner side of the retaining edge portion (1001) of the sealing ring (100) abuts against the outer wall of the intermediate shaft (7).

Images