Tooth pattern body sealing structure capable of prolonging service life of air spring

Abstract

The utility model discloses a thread body sealing structure capable of prolonging the service life of an air spring, which comprises the air spring, circular connectors are arranged at two ends of the air spring, a thread structure, a middle interlayer circular rubber sleeve and a sealing metal ring for fastening an outer ring are arranged on the outer surface of each circular connector, and the metal ring can be radially shrunk; the tooth pattern structure comprises a common annular tooth pattern which is located on the surface of one end of the connecting body, a large annular protruding rib is arranged in the middle of the common annular tooth pattern, a sealing metal ring is arranged on the annular protruding rib, an annular groove is formed in the inner side of the sealing metal ring, and the sealing metal ring is connected with the annular groove. The groove and the annular protruding rib of the connecting body are connected in a clamped mode after annular centripetal pressure is applied to the metal ring. Compared with the prior art, the air spring has the advantages that the air spring has the clamping force of the cylindrical surface ring and the tooth grains, and the clamping force of the concave-convex grooves is increased, so that the total friction force of the bag skin is safely increased, and the service life of the air spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of sealing methods between a buckling ring and a threaded body in an air spring, in particular to a threaded body sealing structure capable of increasing the service life of the air spring. Background Art

[0002] At present, the air spring bladder and the teeth at both ends of the air spring are connected to the rubber bladder by a method of connection: a retaining ring with a cylindrical inner surface and a toothed body with a cylindrical outer surface are used to press the bladder and the toothed body together. Since the air spring is used in an alternating state, to ensure that the bladder is not damaged, the retaining ring is pressed and the toothed body is narrowed to a certain distance after being pressed. This ensures that the bladder in the gap is not damaged and cannot fall off when inflated. It is precisely because of this certain distance that the bladder performance remains intact. When subjected to alternating tension, the bladder will slowly creep out of the gap between the retaining ring and the toothed body, sometimes over a period of years, seriously threatening the life of the air spring.

[0003] Since the inner surface of the retaining ring is a cylindrical surface and the tooth pattern is concave and convex, the capsule skin will wriggle outward from the cylindrical surface. If the inner surface of the retaining ring is also made into a tooth pattern, then it is possible that the two tooth tips will squeeze the middle capsule skin, and the squeezing force of the concave part of the capsule skin will become smaller, thereby reducing the total friction between the capsule skin and the retaining part. However, if the local force is too large, the capsule skin will be cut off. Therefore, the tooth pattern on the inner surface of the retaining ring is not realistic. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a method for conveniently increasing the clamping force of the concave and convex grooves, thereby safely increasing the total friction force of the bladder skin and thus prolonging the life of the air spring.

[0005] To solve the above problems, the technical solution of the utility model is: a threaded body sealing structure that can prolong the life of an air spring, comprising an air spring, wherein both ends of the air spring are provided with a circular connector, the outer surface of the circular connector is provided with a threaded structure, a circular rubber sleeve as an intermediate layer, and a sealing metal ring for tightening the outer ring, wherein the metal ring can be radially reduced;

[0006] The tooth pattern structure includes an ordinary annular tooth pattern, which is located on one end surface of the connector. A large annular raised rib is provided in the middle position of the ordinary annular tooth pattern. A rubber bag skin is provided on the annular raised rib together with the ordinary Yawen. A sealing metal ring is provided on the outside of the rubber bag skin. An annular groove is provided on the inner side of the sealing metal ring. The groove is aligned with the annular raised rib of the connector and the bag skin is clamped on it after applying annular centripetal pressure to the metal ring.

[0007] Furthermore, the sealing metal ring is a metal fastener.

[0008] The advantages of this utility model compared with the existing technology are:

[0009] The utility model adds raised teeth on the connecting body, utilizes the groove in the metal ring and the sealing ring, and the convex rib on the tooth body, and presses the tooth body and the bladder skin at both ends into one. This new connection method not only has the clamping force of the cylindrical ring and the teeth, but also increases the clamping force of the concave and convex grooves, thereby safely increasing the total friction of the bladder skin and thus improving the life of the air spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This utility model is a three-dimensional toothed sealing structure that can increase the life of the air spring. Figure 1 .

[0011] Figure 2 The utility model is a schematic diagram of a sealing ring structure of a threaded sealing structure capable of increasing the service life of an air spring.

[0012] As shown in the figure: 1. Circular connector; 2. Tooth pattern structure; 3. Annular raised rib; 4. Sealing metal ring; 5. Groove. DETAILED DESCRIPTION

[0013] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings, wherein the same components are represented by the same reference numerals.

[0014] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0015] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0016] like Figures 1 to 2 As shown, a toothed body sealing structure that can improve the service life of an air spring includes an air spring, and circular connectors 1 are provided at both ends of the air spring. The outer surface of the circular connector 1 is provided with a toothed structure 2, a middle-layer circular rubber sleeve and a sealing metal ring 4 for tightening the outer ring, and the metal ring 4 will shrink radially; the toothed structure 2 includes ordinary annular teeth, which are located on one end surface of the connector 1, and a large annular raised rib 3 is provided in the middle position of the ordinary annular teeth. A sealing metal ring 4 is provided on the annular raised rib 3, and an annular groove 5 is provided on the inner side of the sealing metal ring 4. The groove 5 and the connector annular raised rib 3 are clamped together by applying annular centripetal pressure to the metal ring 4, and the sealing metal ring 4 is a metal fastener.

[0017] In specific use, such as Figure 1 and Figure 2 As shown, first, the tooth structure 2 on the connector 1 is utilized, the teeth on the tooth structure 2 and the metal ring 3 are utilized, and then during the connection process, the groove 5 in the sealing ring 4 is utilized to contact the metal ring 3. In this process, the tooth bodies and the bladder skin at both ends are pressed into one. This new connection method not only has the clamping force of the cylindrical ring and the teeth, but also holds the middle circular rubber sleeve tightly on the connector, thereby sealing the circular rubber sleeve and the two connectors 1 to form a cylindrical sealing cavity surface, which is part of the air spring, but also increases the clamping force of the concave and convex grooves, thereby safely increasing the total friction of the bladder skin and thus improving the life of the air spring.

[0018] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A threaded seal structure capable of extending the life of an air spring, characterized by: The air spring comprises a circular connector (1) at both ends of the air spring, the outer surface of the circular connector (1) is provided with a toothed structure (2), a middle intermediate circular rubber sleeve and a sealing metal ring (4) for tightening the outer ring, and the metal ring (4) can be radially reduced; The tooth pattern structure (2) includes a common annular tooth pattern, which is located on one end surface of the connector (1). A large annular raised rib (3) is provided in the middle of the common annular tooth pattern. A rubber bag skin is provided on the annular raised rib (3) together with the common Yawen. A sealing metal ring (4) is provided on the rubber bag skin. An annular groove (5) is provided on the inner side of the sealing metal ring (4). The groove (5) is aligned with the annular raised rib (3) of the connector and the bag skin is clamped on (1) by applying an annular centripetal pressure to the metal ring (4).

2. The threaded seal structure for increasing the life of an air spring according to claim 1, characterized in that: The sealing metal ring (4) is a metal fastener.

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