Sealing ring press-fitting structure

Abstract

The utility model relates to a seal ring press-fitting structure which comprises a base and a gland part, the gland part is connected to the base, the press-fitting structure further comprises a cover taking part, the cover taking part comprises a first section and a second section, and a first groove is annularly formed in the surface of the second section. According to the utility model, the first groove is formed in the cover taking piece, so that the inner lip of the sealing ring can be effectively prevented from flanging when the sealing ring enters the notches of the inner ring and the outer ring of the bearing during press fitting, the assembly quality of the sealing ring is improved, the good sealing performance is ensured, and the sealing ring can be conveniently taken out especially for larger interference magnitude. The inner lip is thin and soft, and the long sealing ring structure has a good press-fitting effect.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a seal ring pressing structure. Background Art

[0002] The traditional seal ring structure mainly relies on the maze contact formed by the inner ring seal groove and the inner lip of the seal ring to achieve the sealing effect. Its main function is to prevent pollutants such as dust, liquid, and gas from entering the bearing interior, and at the same time, it can also prevent lubricating oil from leaking inside and outside the bearing, thereby protecting the bearing from damage and extending its service life.

[0003] At present, for the seal ring gland tooling, the cap taking and glanding are completed by the same mechanism. The principle of cap taking is to position through the interference force between the inner lip of the seal ring and the core of cap taking, and then through the gland head, the seal ring with a skeleton is pressed, and the outer lip of the seal ring is squeezed into the outer ring seal groove by pressing the outer upper lip for final positioning.

[0004] However, in this process, the inner lip of the seal ring is not stressed. When the interference amount between the inner lip of the seal ring and the cap taking core is large, although the outer lip of the bearing seal ring is pressed into the bearing seal groove, the inner lip of the seal ring is flipped by the cap taking core, resulting in the situation of inner flanging of the installed bearing seal ring. The incorrect installation of this seal ring will cause abnormal feel of the bearing and greatly reduce the sealing effect. Content of the Utility Model

[0005] Aiming at the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a seal ring pressing structure to solve one or more problems in the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A seal ring pressing structure includes a base and a glanding member, the glanding member is connected to the base, the pressing structure further includes a cap taking member, the cap taking member includes a first section and a second section, and a first groove is annularly arranged on the surface of the second section.

[0008] Further, the groove wall of the first groove is symmetrically arranged along a first direction and is inclined relative to the first direction.

[0009] Further, the cap taking member is matched with the glanding member and is relatively slidably arranged.

[0010] Further, the glanding member is provided with a first protrusion, the first section is provided with a second protrusion, and the first protrusion is matched with the second protrusion.

[0011] Further, the pressing structure further includes a compression spring, and one end of the compression spring is connected to the cap taking member.

[0012] Further, the diameter length of the second section is not greater than that of the first section.

[0013] Further, a third protrusion is also provided on the surface of the second section, and a chamfer is also provided on the third protrusion.

[0014] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0015] By providing a first groove on the cover-taking member, when the sealing ring is pressed and installed into the notch of the inner and outer rings of the bearing, the inner lip of the sealing ring can be effectively prevented from flanging, the assembly quality of the sealing ring is improved, and the good sealing performance is ensured. In particular, it has a good pressing effect on the sealing ring structure with a large interference amount, a thin, soft and long inner lip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. shows a structural schematic diagram of a sealing ring pressing structure according to an embodiment of the present utility model.

[0017] Reference numerals in the drawings: 1, base; 2, pressing cover member; 201, first protrusion; 3, cover-taking member; 301, first section; 3011, second protrusion; 302, second section; 3021, first groove; 3022, third protrusion; 4, compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further describes in detail a sealing ring pressing structure proposed by the present utility model in conjunction with the drawings and specific embodiments. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings are in a very simplified form and all use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present utility model. In order to make the purpose, features and advantages of the present utility model more obvious and understandable, please refer to the drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present utility model. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model.

[0019] The following describes the specific structure of a sealing ring pressing structure:

[0020] Please refer to Figure 1, the seal ring pressing structure of this embodiment includes a base 1 and a pressing cover 2, the pressing cover 2 is connected to the base 1, the pressing structure further includes a cover taking member 3, the cover taking member 3 includes a first section 301 and a second section 302, and a first groove 3021 is annularly arranged on the surface of the second section 302. Preferably, in this embodiment, the diameter length of the second section 302 is equal to the diameter length of the inner ring notch of the bearing, so that when the pressing cover 2 pushes the seal ring onto the bearing, the notch edge of the first groove 3021 and the notch edge of the inner ring are collinear in the second direction, and the second direction in this embodiment is the direction perpendicular to the horizontal ground.

[0021] Furthermore, the groove walls of the first groove 3021 are symmetrically arranged along the first direction and are inclined relative to the first direction, thereby facilitating the inner lip of the seal ring to enter the inner ring notch of the bearing. In this embodiment, the first direction is the direction parallel to the horizontal ground.

[0022] Furthermore, the cover taking member 3 is in clearance fit with the pressing cover 2 and is arranged inside the pressing cover 2, and the cover taking member 3 and the pressing cover 2 are relatively slidably arranged.

[0023] Furthermore, the pressing cover 2 is provided with a first protrusion 201, the first section 301 is provided with a second protrusion 3011, and the first protrusion 201 cooperates with the second protrusion 3011, thereby restricting the distance of the cover taking member 3 moving relative to the pressing cover 2 in the second direction. Further, the pressing structure further includes a compression spring 4, one end of the compression spring 4 is connected to the cover taking member 3, and the cover taking member 3 is pushed to move by the force applied by the compression spring 4.

[0024] Furthermore, the diameter length of the second section 302 is not greater than the diameter length of the first section 301, so that the pressing cover 2 can move relative to the cover taking member 3. A third protrusion 3022 is further arranged on the surface of the second section 302, and a chamfer is also arranged on the third protrusion 3022. Preferably, the diameter length of the third protrusion 3022 is slightly smaller than the inner diameter of the bearing inner ring, and the positioning of the third protrusion 3022 on the bearing is improved by arranging the chamfer.

[0025] The following describes the specific working process of a seal ring pressing structure:

[0026] As shown in Figure 1 , first, the cover taking member 3 is pressed down by the compression spring 4, and the end of the second section 302 close to the bearing squeezes the inner lip of the seal ring when passing through the seal ring. When the cover taking member 3 is pressed down to a certain position, the inner lip of the seal ring slides into the first groove 3021. At this time, the inner lip of the seal ring is in a state of transition fit and free positioning. When the third protrusion 3022 enters the inner diameter of the bearing inner ring for positioning, at this time, the second section 302 abuts against the bearing surface at the end close to the bearing.

[0027] Then, the outer lip of the sealing ring with a skeleton is pressed by the gland member 2. While being pressed into the outer ring sealing groove, the inner lip is gradually and interference - fitted into the inner ring sealing groove opening through the angled first groove 3021, which can effectively prevent the problem of the inner lip of the sealing ring turning inwards.

[0028] The technical features of the above - described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above - described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0029] The above - described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A seal ring press-fitting structure, comprising a base and a gland member, the gland member being connected to the base, characterized in that: The press-fitting structure further includes a lid-taking member, which includes a first section and a second section, and a first groove is annularly arranged on the surface of the second section.

2. The seal ring press-fitting structure according to claim 1, characterized in that: The groove walls of the first groove are symmetrically arranged along a first direction and are inclined relative to the first direction.

3. A seal ring press-fitting structure according to claim 2, characterized in that: The lid-taking member is fitted to the lid-pressing member and is arranged to be slidable relative to it.

4. The seal ring press-fitting structure according to claim 3, wherein: The lid-pressing member is provided with a first protrusion, and the first section is provided with a second protrusion, and the first protrusion is fitted to the second protrusion.

5. The seal ring pressing structure according to claim 4, characterized in that: The press-fitting structure further includes a compression spring, and one end of the compression spring is connected to the lid-taking member.

6. The seal ring press-fitting structure according to claim 5, characterized in that: The diameter length of the second section is not greater than that of the first section.

7. The seal ring pressing structure according to claim 6, characterized in that: A third protrusion is further arranged on the surface of the second section, and a chamfer is also arranged on the third protrusion.

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