y-seal

Abstract

The utility model relates to the field of sealing element especially relates to Y type sealing element, and a pair of sealing lips extending outwardly is symmetrically arranged on the base ring lateral wall, two sealing lips and base ring jointly constitute Y shape structure, and the base ring is respectively equipped with outer convex ring and inner convex ring in the junction with sealing lip, and 90 degree angle recess is formed between outer convex ring, inner convex ring and base ring outer wall respectively. In the utility model, the inner and outer convex rings are arranged on the upper edge of the conventional sealing lip and are moved downward to the junction of the base ring and the sealing lip, which can significantly reduce the contact position between the sealing lip and the sealing surface, effectively reduce the relative wear, reduce the sealing weakness caused by the wear, and improve the overall sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to Y-type seals. Background Technology

[0002] Small pneumatic and hydraulic actuators, such as small cylinders, robotic arm finger cylinders, and precision solenoid valves, are core components in modern automated equipment and precision machinery. These components generally use standard Y-type sealing rings as seals.

[0003] Especially under piston pressure, due to the molding process of traditional Y-type seals, there will be protruding edges on both sides of the tip of the Y-type structure, that is, the outer lip. When these protruding edges come into contact with the piston steel ring (sealing surface), they will wear down with the reciprocating motion. Over time, this will lead to the generation of debris and weakening of the sealing performance. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a Y-type sealing element.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The Y-type seal includes a base ring. A pair of outwardly inclined sealing lips are symmetrically provided on the side wall of the base ring. The two sealing lips and the base ring together form a Y-shaped structure. The base ring is provided with an outer convex ring and an inner convex ring at the connection with the sealing lips. The outer convex ring, the inner convex ring and the outer wall surface of the base ring form a 90° angled groove.

[0007] Furthermore, a preferred configuration is that a V-shaped groove with an outward opening is formed between each of the sealing lips.

[0008] Furthermore, a preferred structure is that the bottom end of the V-shaped groove has a rounded corner.

[0009] Furthermore, in a preferred configuration, the included angle formed between the outer convex ring, the inner convex ring and the outer wall surface of each sealing lip is smaller than the included angle groove formed between the outer convex ring, the inner convex ring and the outer wall surface of the base ring.

[0010] The beneficial effects of this utility model are as follows:

[0011] In this invention, the inner and outer convex rings are moved from their traditional position at the upper edge of the sealing lip to the junction of the base ring and the sealing lip. This significantly reduces the contact area between the sealing lip and the sealing surface, effectively reducing relative wear and minimizing subsequent weakening of the seal due to wear, thereby improving the overall sealing performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of the Y-type seal proposed in this utility model;

[0013] Figure 2 This is an external sectional view of the base ring proposed in this utility model;

[0014] Figure 3 This is a cross-sectional view of the base ring proposed in this utility model.

[0015] In the diagram: 1. Base ring; 2. V-groove; 3. Outer convex ring; 4. Inner convex ring; 5. Sealing lip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-3 The Y-type seal includes a base ring 1. A pair of outwardly inclined sealing lips 5 are symmetrically provided on the side wall of the base ring 1. The two sealing lips 5 and the base ring 1 together form a Y-shaped structure. The base ring 1 is provided with an outer convex ring 3 and an inner convex ring 4 at the connection with the sealing lips 5. The outer convex ring 3, the inner convex ring 4 and the outer wall surface of the base ring 1 respectively form a 90° angled groove.

[0018] Two sealing lips 5 start from the bottom of the base ring 1 and extend axially upward and outward. Their outer edges form the main sealing surface that contacts the sealing surface. Compared with the traditional seal with the convex edge on the upper edge of the lip, this structure moves the convex ring structure to the root area of ​​the sealing lip by setting an outer convex ring 3 and an inner convex ring 4 at the connection between the sealing lip 5 and the base ring 1. This design can effectively reduce the contact position between the sealing lip 5 and the sealing surface, reduce relative wear, and at the same time, the outer convex ring 3 and the inner convex ring 4 can enhance the structural stability of the root of the sealing lip and suppress its deformation under pressure.

[0019] The included angle formed between the outer convex ring 3, the inner convex ring 4 and the outer wall surface of each sealing lip 5 is smaller than the included angle groove formed between the outer convex ring 3, the inner convex ring 4 and the outer wall surface of the base ring 1.

[0020] Among them, a V-shaped groove 2 with an outward opening is formed between each sealing lip 5, and the bottom end of the V-shaped groove 2 is provided with a rounded corner.

[0021] In this embodiment, the outer convex ring 3 and the inner convex ring 4 are placed at the junction of the sealing lip 5 and the base ring 1. The position of the convex ring at the outer edge tip in the traditional structure has been adjusted to the middle of the sealing ring, which can effectively avoid the loss and wear caused by friction with the sealing surface.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A Y-type seal, comprising a base ring (1), characterized in that, The base ring (1) has a pair of outwardly inclined sealing lips (5) symmetrically arranged on its side wall. The two sealing lips (5) together with the base ring (1) form a Y-shaped structure. The base ring (1) has an outer convex ring (3) and an inner convex ring (4) respectively at the connection with the sealing lips (5). The outer convex ring (3), the inner convex ring (4) and the outer wall surface of the base ring (1) respectively form a 90° angled groove.

2. The Y-type seal according to claim 1, characterized in that, A V-shaped groove (2) with an outward opening is formed between each of the sealing lips (5).

3. The Y-type seal according to claim 2, characterized in that, The bottom end of the V-shaped groove (2) is provided with a rounded corner.

4. The Y-type seal according to claim 1, characterized in that, The included angle formed between the outer convex ring (3), the inner convex ring (4) and the outer wall surface of each sealing lip (5) is smaller than the included angle groove formed between the outer convex ring (3), the inner convex ring (4) and the outer wall surface of the base ring (1).

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