Sealing fastener for air spring

Abstract

The utility model provides a sealing fastener for an air spring, which comprises a sealing support plate and a sealing fastening ring which are integrally connected, the sealing fastening ring is used for sleeving a rubber part for sealing, the sealing fastening ring is in a hollow circular ring shape, the outer side edge of the sealing fastening ring is integrally connected with a plurality of rings of annular sealing tooth structures, and the sealing tooth structures are arranged on the sealing support plate. The contact friction with the rubber part is increased through the sealing tooth structures, the multiple sealing tooth structures are arranged on the outer side edge of the sealing buckling ring, due to the fact that the concave-convex shapes of the sealing tooth structures can improve the friction force of the contact position with the ring opening of the rubber part, and particularly, the compression resilience of the rubber part after buckling is increased through the sealing tooth structures; specifically, the buckling and pressing amount of rubber located at the tooth top positions of the sealing teeth is increased, so that the joint between the rubber part and the sealing buckling ring is not prone to deformation or looseness caused by low temperature, and the air tightness of the position of the buckling part for the automobile air spring is greatly improved; the technical problem that an existing buckling piece for the automobile air spring has the air tightness defect is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, and particularly relates to a sealing fastening piece for an air spring. BACKGROUND

[0002] An air spring is filled with compressed air in a sealed container, and the elasticity of the air spring is realized by the compressibility of the gas. The air spring has ideal nonlinear elastic characteristics, and after the height adjusting device is installed, the height of the vehicle body does not change with the increase and decrease of the load, the spring stiffness can be designed to be lower, and the ride comfort is good. The air spring suspension structure for the current automobile is complex and has high manufacturing cost.

[0003] Since the automobile air spring has the requirement of being placed in a constant low-temperature environment for use, the stability under low-temperature conditions is tested by monitoring the air pressure change of the sample during the test of the air spring. Through the low-temperature test experiment, possible low-temperature hidden dangers can be identified and eliminated, and the overall reliability and safety of the automobile are improved. The performance and reliability of automobile parts are directly related to the safety and service life of the whole vehicle. However, it is found through the low-temperature test that the fastening piece of the current air spring cannot meet the requirements of the low-temperature air leakage experiment during the experimental test, and has obvious air tightness defects.

[0004] In summary, the existing fastening piece for the automobile air spring has the technical problem of air tightness defects. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is the technical problem of air tightness defects of the existing fastening piece for the automobile air spring.

[0006] To solve the above problems, the utility model provides a sealing fastening piece for an air spring, which comprises a sealing support plate and a sealing fastening ring which are integrally connected, the sealing fastening ring is used for sleeving a rubber piece, the sealing fastening ring is in the form of a hollow circular ring, a plurality of sealing tooth structures which are in the form of rings and are distributed along the axial direction of the sealing fastening ring are integrally connected to the outer side edge of the sealing fastening ring, and the contact friction with the rubber piece is increased through the sealing tooth structure.

[0007] The basic structure of the sealing buckle piece provided by the utility model is the structure that the sealing support plate of the prior art is integrally connected with the sealing buckle ring on one side, the sealing buckle ring is used for forming sealing by being directly sleeved with the ring port of the rubber piece, and the sealing buckle ring is sleeved on the rubber piece outside the sealing buckle ring and is used for compressing the rubber piece to ensure the sealing effect, in order to improve the air tightness of the position contacted with the rubber piece, a plurality of sealing tooth structures are arranged on the outer side edge of the sealing buckle ring, the concave-convex shape of the sealing tooth structure can improve the friction force of the position contacted with the ring port of the rubber piece, in particular, the compression rebound of the rubber piece after buckling is increased through the sealing tooth structure, specifically, the buckling amount of the rubber at the tooth top position of the sealing tooth is increased, the joint between the rubber piece and the sealing buckle ring is not prone to loosening due to the deformation problem caused by low temperature, the air tightness of the position of the buckle piece used for the automobile air spring is greatly improved, and the technical problem that the buckle piece used for the automobile air spring has the air tightness defect is effectively solved.

[0008] As a preferred scheme, the tooth edge of the sealing tooth structure and the recess between adjacent sealing teeth are both in the shape of a circular arc. This design further optimizes the tooth type design of the sealing tooth structure, and the tooth edge of the sealing tooth structure and the recess groove structure between adjacent teeth are both in the shape of a circular arc, so that the sealing tooth does not scratch the rubber piece and cause structural damage when the rubber buckling amount is increased.

[0009] As a preferred scheme, the sealing buckle ring is provided with a circular-arc-shaped protruding structure on the outer edge of the top end on one side of the sealing tooth structure. This design further optimizes the ring port structure of the sealing buckle ring, and the integral circular-arc-shaped protruding structure is arranged at the ring port position, which further increases the buckling amount between the sealing buckle ring and the rubber piece on the basis of the sealing tooth structure, improves the compression degree of the rubber piece at the ring port position of the sealing buckle ring, and improves the local air tightness.

[0010] As a preferred scheme, the height difference between the tooth top and the tooth recess of the sealing tooth structure on the side adjacent to the circular-arc-shaped protruding structure is 0.7mm-0.9mm, including the end point value. This design provides a preferred size design of the sealing tooth structure, the height difference between the tooth top and the tooth recess of the sealing tooth structure can improve the friction force provided by the sealing tooth, and avoid damaging the elasticity of the rubber piece due to the excessive tooth height difference, wherein the tooth top refers to the highest point of the protrusion of the sealing tooth structure, and the tooth recess refers to the lowest point of the groove between the sealing teeth.

[0011] As a preferred scheme, the height difference between the tooth top and the tooth recess of the sealing tooth structure adjacent to one side of the sealing support plate ranges from 1.0 mm to 1.2 mm, inclusive of the end values. The design provides a more adaptable sealing tooth height design for different positions of the sealing tooth on the sealing snap ring, and differentiates the sealing tooth height according to the stress condition of the rubber part at different positions of the sealing snap ring. The tooth shape design with a more obvious difference between the concave and convex is adopted at the position adjacent to one side of the sealing support plate of the sealing snap ring where the rubber part is more likely to deform and bear stress, and the tooth shape design with a smaller difference between the concave and convex is adopted at one end of the top edge of the sealing snap ring where the rubber part bears less stress.

[0012] As a preferred scheme, the interval between the adjacent tooth tops of the sealing tooth structure ranges from 2.5 mm to 2.7 mm, inclusive of the end values. The design further optimizes the tooth shape on the basis of the above sealing tooth structure, and the interval between the adjacent sealing tooth structures is 2.5 mm to 2.7 mm. The tooth shape can effectively ensure the elastic pressure of the sealing tooth and the rubber part, and ensure the air tightness of the sealing tooth position.

[0013] As a preferred scheme, the sealing support plate is integrally connected with a buckle structure on the side of the plate surface away from the sealing snap ring. The design optimizes the structure design of the sealing snap ring, and the buckle structure is integrally connected on the other side of the sealing support plate, so as to facilitate the installation and fixation of the sealing snap ring and the air spring installation position.

[0014] As a preferred scheme, the sealing support plate, the sealing snap ring and the sealing tooth structure are integrally injection molded. The design optimizes the molding of the sealing snap ring, and the sealing support plate, the sealing snap ring and the sealing tooth structure are integrally injection molded, which is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of the sealing snap ring for the air spring is provided in the utility model.

[0016] Figure 2 A structure schematic view of the sealing snap ring for the air spring is provided in the utility model. Figure 1 A structure schematic view of the sealing snap ring for the air spring is provided in the utility model.

[0017] Figure 3 A structure schematic view of the sealing snap ring for the air spring is provided in the utility model. Figure 1 A structure schematic view of the sealing snap ring for the air spring is provided in the utility model.

[0018] Among them, Figures 1-3 Among them:

[0019] 1, sealing snap ring; 2, sealing support plate; 3, sealing tooth structure; 4, circular arc protruding structure; 5, buckle structure; 6, rubber part. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] Before the working principle of the utility model is described in detail, the description of the utility model needs to be further explained: in the description of the utility model, it should be pointed out that the directions or position relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" are the directions or position relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the utility model. The indicated device or element must have a specific direction, be constructed and operated in a specific direction, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, can be direct connection, can be indirect connection through intermediate medium, or can be two element welding connection. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Reference Figures 1-3 The following examples are described as follows, Figure 1 The structure schematic view of the sealing fastening piece for air spring provided by the utility model; Figure 2 The structure schematic view of the sealing fastening piece for air spring provided by the utility model; Figure 1 The cross-sectional structure schematic view of the sealing fastening piece; Figure 3 The cross-sectional structure schematic view of the sealing fastening piece for air spring provided by the utility model; Figure 1 The local cross-sectional structure schematic view of the sealing fastening piece and the rubber piece.

[0024] The sealing fastening piece for air spring provided in the embodiment comprises an integrally connected sealing support plate 2 and sealing fastening ring 1, the sealing fastening ring 1 is used for sleeving the rubber piece 6 for sealing, the sealing fastening ring 1 is in the form of hollow annular ring, the outer side edge of the sealing fastening ring 1 is integrally connected with a plurality of sealing tooth structures 3 which are distributed along the axial direction of the sealing fastening ring and in the form of ring, the contact friction with the rubber piece 6 is increased through the sealing tooth structure 3.

[0025] The basic structure of the sealing buckle piece provided by the utility model is the structure that the sealing support plate 2 of the prior art is integrally connected with the sealing buckle ring 1 on one side, the sealing buckle ring 1 is used for forming sealing by being directly sleeved with the ring opening of the rubber piece 6, and the sealing buckle ring is sleeved on the rubber piece 6 outside the sealing buckle ring 1 and is used for compressing the rubber piece 6 to ensure the sealing effect, in order to improve the air tightness of the position contacted with the rubber piece 6, a plurality of sealing tooth structures 3 are arranged on the outer side edge of the sealing buckle ring 1, the concave-convex shape of the sealing tooth structure 3 can improve the friction force of the position contacted with the ring opening of the rubber piece 6, especially by increasing the compression rebound of the rubber piece 6 after buckling, specifically by increasing the buckling amount of the rubber at the tooth top position of the sealing tooth, the joint between the rubber piece 6 and the sealing buckle ring 1 is not prone to loosening due to the deformation problem caused by low temperature, the air tightness of the position of the buckle piece used for the automobile air spring is greatly improved, and the technical problem that the buckle piece used for the automobile air spring has the air tightness defect is effectively solved.

[0026] In the technical scheme provided by the embodiment, the tooth edge protrusion of the sealing tooth structure 3 and the recess between adjacent sealing teeth are both in the shape of a circular arc. This design further optimizes the tooth type design of the sealing tooth structure 3, and the tooth edge protrusion of the sealing tooth structure 3 and the recess groove structure between adjacent teeth are both in the shape of a circular arc, so that the sealing tooth does not scratch the rubber piece 6 and cause structural damage when increasing the rubber buckling amount.

[0027] In the technical scheme provided by the embodiment, the circular arc protrusion structure 4 is arranged on the outer edge of the top end of the sealing buckle ring 1 on one side of the sealing tooth structure 3. This design further optimizes the ring opening structure of the sealing buckle ring 1, and the integral circular arc protrusion structure 4 is arranged at the ring opening position, which further increases the buckling amount between the sealing buckle ring 1 and the rubber piece 6 on the basis of the sealing tooth structure 3, improves the compression degree of the rubber piece 6 at the ring opening position of the sealing buckle ring 1, and improves the local air tightness.

[0028] In the technical scheme provided by the embodiment, the height difference between the tooth top and the tooth recess of the sealing tooth structure 3 on the side adjacent to the circular arc protrusion structure 4 is in the range of 0.7mm-0.9mm, including the end point value. This design provides a preferred size design of the sealing tooth structure 3, the height difference between the tooth top and the tooth recess of the sealing tooth structure 3 can improve the friction force provided by the sealing tooth and avoid damaging the elasticity of the rubber piece 6 due to excessive tooth height difference, wherein the tooth top refers to the highest point of the protrusion of the sealing tooth structure 3, and the tooth recess refers to the lowest point of the groove between the sealing teeth.

[0029] The height difference between the tooth top and the tooth recess of the sealing tooth structure 3 adjacent to one side of the sealing support plate 2 is 1.0mm-1.2mm, including the end point value. The design provides a more adaptive sealing tooth height design for different positions of the sealing tooth on the sealing snap ring 1. The sealing tooth height is designed differently according to the stress condition of the rubber part 6 at different positions of the sealing snap ring 1. The tooth shape design with a more obvious difference between the concave and convex is adopted at the position adjacent to one side of the sealing support plate 2 of the sealing snap ring 1 where the rubber part 6 is more likely to deform and stress, and the tooth shape design with a smaller difference between the concave and convex is adopted at one end of the top edge of the sealing snap ring 1 where the rubber part 6 is less stressed.

[0030] In the technical scheme provided by the embodiment, the interval between adjacent tooth tops of the sealing tooth structure 3 is 2.5mm-2.7mm, including the end point value. The tooth shape is further optimized on the basis of the above sealing tooth tooth convex size structure. The interval between adjacent sealing tooth structures 3 is 2.5mm-2.7mm. The tooth shape can effectively ensure the elastic pressure of the sealing tooth and the rubber part 6, and ensure the air tightness of the sealing tooth position.

[0031] In the technical scheme provided by the embodiment, the sealing support plate 2 is integrally connected with the buckle structure 5 on the side away from the sealing snap ring 1. The design optimizes the structure design of the sealing snap ring. The buckle structure 5 is integrally connected on the other side of the sealing support plate 2, which facilitates the installation and fixation of the sealing snap ring and the air spring installation position.

[0032] In the technical scheme provided by the embodiment, the sealing support plate 2, the sealing snap ring 1 and the sealing tooth structure 3 are integrally injection molded. The design optimizes the molding of the sealing snap ring. The sealing support plate 2, the sealing snap ring 1 and the sealing tooth structure 3 are integrally injection molded, which is simple and reliable.

[0033] Although the present disclosure is as disclosed above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. A sealing fastener for air springs, comprising a sealing support plate (2) and a sealing fastener ring (1) connected integrally, the sealing fastener ring (1) being used to sleeve a rubber piece (6) seal, characterized in that, The sealing buckle ring (1) is in a hollow annular shape, and a plurality of sealing tooth structures (3) in a ring shape are integrally connected to the outer side edge of the sealing buckle ring (1) and are distributed along the axial direction of the sealing buckle ring, and the sealing tooth structures (3) increase the contact friction with the rubber part (6).

2. The sealing closure for an air spring of claim 1, wherein, The tooth edge protrusions of the sealing tooth structures (3) and the recesses between adjacent sealing teeth are in a circular arc surface shape.

3. The sealing closure for an air spring of claim 2, wherein, The sealing buckle ring (1) is provided with a circular arc protruding structure (4) at the top outer edge on one side of the sealing tooth structure (3).

4. The sealing closure for air springs of claim 3, wherein, The height difference between the tooth top and the tooth recess of the sealing tooth structure (3) on the side adjacent to the circular arc protruding structure (4) is in a range of 0.7mm-0.9mm, including the end point value.

5. The sealing closure for an air spring of claim 4, wherein, The height difference between the tooth top and the tooth recess of the sealing tooth structure (3) on the side adjacent to the sealing support plate (2) is in a range of 1.0mm-1.2mm, including the end point value.

6. The sealing closure for an air spring of claim 5, wherein, The interval between adjacent tooth tops of the sealing tooth structure (3) is in a range of 2.5mm-2.7mm, including the end point value.

7. The sealing closure for air springs of claim 1, wherein, The sealing support plate (2) is integrally connected with a buckle structure (5) on the plate surface on the side away from the sealing buckle ring (1).

8. The sealing closure for air springs of claim 1, wherein, The sealing support plate (2), the sealing buckle ring (1) and the sealing tooth structure (3) are integrally injection molded.

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