Gas spring steel wire ring

Abstract

The utility model discloses a gas spring steel wire ring which comprises a steel wire ring body, a steel wire inner end and a steel wire outer end, the steel wire ring body is of an annular structure which is formed by winding a single steel wire from inside to outside and is provided with at least four steel wire layers, the number of turns of steel wires of each steel wire layer is the same, and the cross section of the steel wire ring body is basically square. The free end of the innermost steel wire layer extends to form a steel wire inner end, the outer side of the steel wire inner end is not in contact with the steel wire layer, and the free end of the outermost steel wire layer extends to form a steel wire outer end. The utility model provides an air spring steel wire ring which reduces concentrated stress on a cord thread layer.

Description

Technical Field

[0001] The utility model relates to the technical field of gas springs, in particular to a gas spring wire ring. Background Art

[0002] The air spring is an elastic element that uses the reaction force of compressed air in a rubber airbag with cords as elastic restoring force. It consists of a rubber airbag, an upper cover plate, a base and other components, and is filled with compressed gas. The rubber airbag is an important component of the air spring, and the rubber airbag is vulcanized by inner and outer coverings (inner rubber layer, outer rubber layer), cord layers and steel wire rings.

[0003] The 4×4 wire rings widely used in existing passenger cars are Figure 3 As shown, there are 4 parallel steel wires wound together. After winding, joints with 4 steel wires are formed at both ends of the steel wire ring. The joints are large, and the ends of four steel wires at the inner end of the steel wire ring contact the cord layer. After the steel wire ring is subjected to force, the middle layer steel wire squeezes the inner end of the steel wire ring 200, which is easy to cause large concentrated stress on the cord layer, thereby affecting the reliability of the gas spring. Utility Model Content

[0004] The utility model provides a gas spring wire ring to solve the defect that the existing gas spring wire ring has a large concentrated stress on the cord layer after being stressed, and reduces the concentrated stress on the cord layer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas spring wire ring comprises a wire ring body, a wire inner end and a wire outer end. The wire ring body is an annular structure formed by winding a single steel wire from the inside to the outside and has at least four wire layers. The number of wire turns in each wire layer is the same, and the cross-section of the wire ring body is basically square. The free end of the innermost wire layer extends to form the inner end of the wire, and the outer side of the inner end of the wire does not contact the steel wire layer. The free end of the outermost wire layer extends to form the outer end of the wire.

[0007] Through the above arrangement, the wire ring body is formed by winding a single steel wire, there is only one steel wire at the inner end of the steel wire, the joint is smaller, and the steel wire is saved; the inner end of the steel wire is located on one side of the innermost steel wire layer, and the outer side of the inner end of the steel wire does not contact the steel wire layer; when the wire ring is subjected to force, the steel wire layer will not squeeze the inner end of the steel wire, which can reduce the concentrated stress of the wire ring on the cord layer.

[0008] Furthermore, the inner end of the steel wire and the outer end of the steel wire are located on the same side of the center of the steel wire ring, and a line connecting the inner end of the steel wire and the outer end of the steel wire passes through the center of the steel wire ring.

[0009] Through the above arrangement, the dynamic balance of the wire ring is improved.

[0010] Furthermore, each steel wire layer is provided with four turns of steel wires, and the bead wire is provided with four layers of steel wire layers.

[0011] Furthermore, adjacent two layers of steel wire layers are in contact with each other, and adjacent two turns of steel wires in the steel wire layer are in contact with each other.

[0012] Through the above settings, the bead wire structure is made more compact.

[0013] Furthermore, the diameter of the steel wire is 1-3 mm. Description of the Drawings

[0014] Figure 1 It is a partial side view of the bead wire of the embodiment.

[0015] Figure 2 It is Figure 1 the A-A cross-sectional view of

[0016] Figure 3 It is a schematic diagram of the existing bead wire. Detailed Embodiment

[0017] Next, through embodiments and in combination with the drawings, the technical solutions of the present invention will be further specifically described.

[0018] Refer to Figures 1 to 2 , a pneumatic spring bead wire, including a bead wire body 1, a steel wire inner end 2 and a steel wire outer end 3. The bead wire body 1 is an annular structure formed by winding a single steel wire from the inside to the outside and having at least four layers of steel wire layers 11. The number of turns of the steel wires in each steel wire layer 11 is the same, and the cross-section of the bead wire body 1 is basically square. The free end of the innermost steel wire layer 11 extends to form the steel wire inner end 2, and the outside of the steel wire inner end 2 is not in contact with the steel wire layer 11. The free end of the outermost steel wire layer 11 extends to form the steel wire outer end 3.

[0019] Through the above settings, the bead wire body 1 is wound by a single steel wire. There is only one steel wire at the steel wire inner end 2, and the joint is smaller, saving steel wire. The steel wire inner end 2 is located on one side of the innermost steel wire layer 11, and the outside of the steel wire inner end 2 is not in contact with the steel wire layer 11. After the bead wire is stressed, the steel wire layer 11 will not squeeze the steel wire inner end 2, and the concentrated stress of the bead wire on the cord layer can be reduced.

[0020] In this application, the bead wire is wound by a single steel wire, Figure 2The winding sequence of each turn of steel wire is shown. When winding the steel wire, one end of the locking steel wire is used as the inner end 2 of the steel wire, and then the steel wire is tightly wound from right to left to form the first steel wire layer 11. Then, the steel wire is tightly wound from left to right outside the first steel wire layer 11 to form the second steel wire layer 11, and so on, until the steel wire loop is wound. When in use, the steel wire loop is sleeved outside the cord layer of the gas spring. The inner side of the innermost steel wire layer 11 is attached to the cord layer, and it is basically in uniform circumferential contact with the outside of the cord layer. After the gas spring is compressed, the outer steel wire layer 11 squeezes the innermost steel wire layer 11, and the innermost steel wire layer 11 directly squeezes the cord layer. The cord layer is uniformly stressed circumferentially by the steel wire loop. Moreover, the volume of the inner end 2 of the steel wire is small and it is not squeezed by the steel wire layer 11 on the outside. Therefore, the inner end 2 of the steel wire basically will not cause a large concentrated stress on the cord layer.

[0021] As an implementation manner, the inner end 2 of the steel wire and the outer end 3 of the steel wire are on the same side of the center of the steel wire loop, and the connection line between the inner end 2 of the steel wire and the outer end 3 of the steel wire passes through the center of the steel wire loop.

[0022] Through the above setting, the dynamic balance of the steel wire loop is improved.

[0023] In this application, the total number of turns of the steel wire of the steel wire loop is an integer, so that the mass of the steel wire loop is basically uniform circumferentially, and the dynamic balance of the steel wire loop is improved.

[0024] As an implementation manner, each steel wire layer 11 is provided with four turns of steel wire, and the steel wire loop is provided with four steel wire layers 11.

[0025] As an implementation manner, adjacent two steel wire layers 11 are in contact with each other, and adjacent two turns of steel wire in the steel wire layer 11 are in contact with each other.

[0026] Through the above setting, the structure of the steel wire loop is made more compact.

[0027] As an implementation manner, the diameter of the steel wire is 1 - 3 mm.

[0028] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of this utility model.

Claims

1. A gas spring wire ring, characterized in that: The invention comprises a wire ring body, an inner end of a steel wire and an outer end of a steel wire. The wire ring body is an annular structure formed by winding a single steel wire from the inside to the outside and has at least four steel wire layers. The number of turns of the steel wire in each steel wire layer is the same, and the cross-section of the wire ring body is basically square. The free end of the innermost steel wire layer extends to form the inner end of the steel wire, the outer side of the inner end of the steel wire does not contact the steel wire layer, and the free end of the outermost steel wire layer extends to form the outer end of the steel wire.

2. A gas spring wire ring according to claim 1, characterized in that: The inner end of the steel wire and the outer end of the steel wire are located on the same side of the center of the steel wire ring, and a line connecting the inner end of the steel wire and the outer end of the steel wire passes through the center of the steel wire ring.

3. The gas spring wire ring according to claim 1, characterized in that: Each steel wire layer is provided with four turns of the steel wire, and the steel wire ring is provided with four steel wire layers.

4. The gas spring wire ring according to claim 1, characterized in that: Two adjacent layers of the steel wire layers are in contact with each other, and two adjacent turns of steel wires in the steel wire layer are in contact with each other.

5. The gas spring wire ring according to claim 1, characterized in that: The diameter of the steel wire is 1-3 mm.

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