Cord thread layer for air spring bag skin and air spring bag skin
By combining a three-section cord layer structure with rigid filler, the shortcomings of air spring bladder in torsion and load-bearing capacity are solved, achieving higher torsional resistance and load-bearing capacity, and reducing the complexity and cost of the air spring assembly.
Patent Information
- Application Number
- CN202520175489.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Existing air spring bladders are prone to torsion and breakage when the vehicle yaws, and existing solutions increase the size or complexity of the air spring assembly, failing to meet the requirements of higher loads and larger yaw angles.
It adopts a three-section cord layer structure, including the first and fourth sub-cord layers arranged in a cross pattern, and the second sub-cord layer arranged in a cross pattern and with intervals. Combined with rigid filler, the combination of cord layers with different cross angles is controlled, eliminating the need for planar bearings and improving torsional performance and load-bearing capacity.
Without increasing the volume of the air spring bladder, the torsional resistance and load-bearing capacity of the air spring bladder are improved, the complexity and cost of the suspension system are reduced, and the restraint and stiffness of the bladder are enhanced.
Smart Images
Figure CN223662445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air springs, specifically to a cord layer for an air spring bladder and an air spring bladder. Background Technology
[0002] Due to vehicle movement and swaying, air springs experience significant bending deformation on their upper and lower mounting surfaces, generating substantial torsional forces and angles along the axial direction. This can easily lead to the air spring bladder rupture due to torsion. Currently, solutions to this problem generally include: 1. Increasing the length of the air spring to improve the travel of the bladder and enhance the uniformity of expansion during bending; 2. Installing a flat bearing on the piston end of the air spring to withstand torsion and swaying during movement, with the bladder only responsible for axial damping. However, both solutions have their own problems: Solution 1 increases the volume of the air spring assembly, which is inconvenient for layout and installation in increasingly compact suspension systems; Solution 2 increases structural complexity, hindering future maintenance and repair, and increasing production costs. Therefore, achieving a certain degree of torsional resistance in the air spring bladder without increasing its volume is key to solving the current problems. Furthermore, the torsional load-bearing capacity of current bladder components is insufficient to handle the higher loads and larger sway angles in automotive suspension systems. Utility Model Content
[0003] The purpose of this invention is to overcome one or more deficiencies in the prior art and provide an improved air spring bladder cord layer that can improve both the torsional performance of the bladder and the load-bearing capacity of the torsional portion of the bladder.
[0004] This utility model also provides an air spring bladder that includes the above-mentioned air spring bladder cord layer.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An air spring bladder sheath cord layer, the cord layer comprising a first cord segment, a second cord segment and a third cord segment, the first cord segment comprising a first sub-cord layer with cords arranged in a cross configuration, the second cord segment comprising a second sub-cord layer with cords arranged in a cross configuration and a third sub-cord layer with cords arranged at intervals, and the third cord segment comprising a fourth sub-cord layer with cords arranged in a cross configuration.
[0007] The first sub-cord layer, the second sub-cord layer, the third sub-cord layer, and the fourth sub-cord layer are arranged sequentially. The cross angles of the cords in the first sub-cord layer and the fourth sub-cord layer are different from the cross angles of the cords in the second sub-cord layer.
[0008] According to some preferred aspects of this utility model, the cross angle of the cords in the first sub-cord layer and the cross angle of the cords in the fourth sub-cord layer are both greater than the cross angle of the cords in the second sub-cord layer.
[0009] According to some preferred aspects of the present invention, the cross angle of the cords in the first sub-cord layer and the cross angle of the cords in the fourth sub-cord layer are independently selected from 60°-80°.
[0010] According to some preferred aspects of the present invention, the cross angle of the cords in the second sub-cord layer is 30°-45°.
[0011] In some embodiments of this utility model, the cord density of each of the first sub-cord layer, the second sub-cord layer, and the fourth sub-cord layer is independently 140-160 cords / 10cm.
[0012] In some embodiments of this utility model, the cord density in the third sub-cord layer is 120-150 cords / 10cm.
[0013] According to some preferred aspects of the present invention, the cord layer includes a first cord layer, a second cord layer, a third cord layer, a fourth cord layer, and a fifth cord layer;
[0014] The first thread layer and a portion of the second thread layer are superimposed to form the first sub-tie layer;
[0015] The remaining second thread layer and part of the third thread layer are superimposed to form the second sub-tie layer;
[0016] The remaining third thread layer constitutes the third sub-trailer layer;
[0017] The fourth thread layer and the fifth thread layer are superimposed to form the fourth sub-tie layer.
[0018] In some embodiments of this utility model, the included angle between the cord and the axial extension line in the second cord layer is 40°-45°.
[0019] In some embodiments of this utility model, the angle between the cord and the axial extension line in the third layer is 0-10°.
[0020] In some embodiments of this utility model, the height of the second sub-curtain layer is 20-40mm.
[0021] In some embodiments of this utility model, the height of the second curtain segment is greater than the height of the third curtain segment and less than the height of the first curtain segment.
[0022] Another technical solution provided by this utility model: an air spring bladder, the air spring bladder comprising a bladder substrate and a cord layer disposed on the bladder substrate, the cord layer comprising the cord layer for air spring bladders described above.
[0023] According to some preferred aspects of the present invention, a groove is formed on the bladder substrate corresponding to the second sub-cord layer, and the air spring bladder further includes a rigid filler disposed in the groove.
[0024] According to some preferred aspects of the present invention, the groove has a plurality of grooves, and each groove corresponds to one of the rigid fillers.
[0025] According to some preferred aspects of this utility model, the rigid filler is made of metal or rigid plastic.
[0026] According to some preferred aspects of the present invention, the rigid filler is interference-fitted with the groove.
[0027] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0028] This invention addresses the problems existing in current air spring bladders by innovatively providing a three-section air spring bladder cord layer. It further controls the upper and lower ends to have intersecting cord layers, while the middle section consists of intersecting cord layers and spaced cord layers. By controlling the intersection angle of the cords in the middle section to differ from that at the upper and lower ends, the planar bearing used for torsional motion in the air spring assembly can be eliminated, thereby reducing the complexity of the air spring mechanism and the cost of the suspension assembly. Furthermore, without increasing the bladder volume, the air spring bladder possesses certain anti-torsional characteristics. The torsional portion achieves higher load-bearing capacity through the layered combination of straight and intersecting cords. In particular, the intersecting cord layers with different intersection angles in the middle layer achieve better restraint of the bladder, reducing the outer diameter of the bladder expansion.
[0029] Furthermore, this invention also provides grooves on the bladder skin and uses rigid fillers to further increase the rigidity of the system, which can limit excessive expansion of the bladder skin and improve the load-bearing capacity of the torsional bladder skin.
[0030] In summary, the air spring bladder cord layer of this invention and the air spring bladder containing the air spring bladder cord layer can achieve higher load and greater yaw angle in automotive suspension systems. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of the cord layer used for the air spring bladder in this utility model;
[0033] Figure 2 This is a partial dissection diagram of the cord layer used for the air spring bladder in this utility model;
[0034] Figure 3 This is a schematic diagram of the structure of the first sub-coil layer in this utility model;
[0035] Figure 4 This is a schematic diagram of the structure of the second sub-coil layer in this utility model;
[0036] Figure 5 This is a partial structural schematic diagram of the air spring bladder in this utility model;
[0037] Figure 6 This is a schematic diagram showing the groove on the air spring bladder and the rigid filler in a free state in this utility model;
[0038] Figure 7 This is a schematic diagram showing the groove on the air spring bladder and the rigid filler in the working state in this utility model;
[0039] In the attached figures, the following are the reference numerals: 1. First cord segment; 11. First sub-cord layer; 2. Second cord segment; 21. Second sub-cord layer; 22. Third sub-cord layer; 3. Third cord segment; 31. Fourth sub-cord layer; 10. First thread layer; 20. Second thread layer; 30. Third thread layer; 40. Fourth thread layer; 50. Fifth thread layer; 4. Skin matrix; 41. Groove; 5. Rigid filler;
[0040] The crossing angles of the cords in the first sub-cord layer and the fourth sub-cord layer are both denoted as α.
[0041] The angle between the cord and the axial extension line in the second layer is denoted as θ, and the angle between the cord and the axial extension line in the third layer is denoted as β. Detailed Implementation
[0042] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed below.
[0043] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0045] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0046] like Figures 1 to 7 As shown, this example provides a cord layer for an air spring bladder. The cord layer for an air spring bladder includes a first cord segment 1, a second cord segment 2, and a third cord segment 3. The first cord segment 1 includes a first sub-cord layer 11 with cords arranged in a crisscross pattern. The second cord segment 2 includes a second sub-cord layer 21 with cords arranged in a crisscross pattern and a third sub-cord layer 22 with cords arranged at intervals. The third cord segment 3 includes a fourth sub-cord layer 31 with cords arranged in a crisscross pattern. The first sub-cord layer 11, the second sub-cord layer 21, the third sub-cord layer 22, and the fourth sub-cord layer 31 are arranged sequentially. The crossing angles of the cords in the first sub-cord layer 11 and the fourth sub-cord layer 31 are different from the crossing angles of the cords in the second sub-cord layer 21.
[0047] In this example, the shape of the cord layer used for the air spring bladder is roughly olive-shaped, and the first cord segment 1, the second cord segment 2, and the third cord segment 3 are in contact with or connected to each other.
[0048] In this example, the cross angle α of the cords in the first sub-cord layer and the cross angle α of the cords in the fourth sub-cord layer are both greater than the cross angle of the cords in the second sub-cord layer 21. Furthermore, the cross angles of the cords in the first sub-cord layer 11 and the fourth sub-cord layer 31 are independently selected from 60° to 80°, while the cross angle of the cords in the second sub-cord layer 21 is 30° to 45°.
[0049] In this example, the cord density of each of the first sub-cord layer 11, the second sub-cord layer 21, and the fourth sub-cord layer 31 is 140-160 cords / 10cm, and the cord density of the third sub-cord layer 22 is 120-150 cords / 10cm.
[0050] In this example, the air spring sheath uses a cord layer comprising a first cord layer 10, a second cord layer 20, a third cord layer 30, a fourth cord layer 40, and a fifth cord layer 50. The first cord layer 10 and a portion of the second cord layer 20 are superimposed to form a first sub-cord layer 11; the remaining second cord layer 20 and a portion of the third cord layer 30 are superimposed to form a second sub-cord layer 21; the remaining third cord layer 30 forms a third sub-cord layer 22; and the fourth cord layer 40 and the fifth cord layer 50 are superimposed to form a fourth sub-cord layer 31. Further, the first cord layer 10 is composed of spaced-apart first cords, the second cord layer 20 is composed of spaced-apart second cords, the third cord layer 30 is composed of spaced-apart third cords, the fourth cord layer 40 is composed of spaced-apart fourth cords, and the fifth cord layer 50 is composed of spaced-apart fifth cords. The first cord, second cord, third cord, fourth cord, and fifth cord are also mentioned.
[0051] In this example, the angle θ between the cord and the axial extension line in the second layer is 40°-45°, and the height of the second sub-cord layer (the height in this example is based on...) Figure 1 Define the placement position as shown. If the placement position is... Figure 1 The horizontal (or width) is 20-40mm. The angle β between the cord and the axial extension line in the third layer is 0-10°. The height of the second cord segment 2 is greater than the height of the third cord segment 3 and less than the height of the first cord segment 1.
[0052] This example also provides an air spring bladder, which includes a bladder substrate 4 and a cord layer disposed on the bladder substrate 41, the cord layer including the cord layer for the air spring bladder described above.
[0053] In this example, a groove 41 is formed on the shell substrate 4 corresponding to the second sub-cord layer 21, and the air spring shell also includes a rigid filler 5 disposed in the groove 41. Furthermore, there are multiple grooves 41, each groove 41 corresponding to a rigid filler 5. The rigid filler 5 is made of metal or rigid plastic, and the rigid filler 5 is interference-fitted with the groove 41.
[0054] In most existing passenger car air springs, the stretching and compression movements are generated by the coiling and unwinding of the bladder over the piston. Therefore, the performance of the bladder in an air spring plays a crucial role in the overall performance of the air spring. The cord layer used in the air spring bladder is an important component of the air spring, providing structural support and improving torsional performance. In this example, see [reference needed]. Figures 1 to 2 As shown, on the one hand, by setting a multi-segment structure, especially with cross cord layers at both the top and bottom ends, the overall load-bearing capacity is improved. The structure of a combination of cross cord layers and straight cord layers in the middle can not only improve the torsional capacity of the skin, but also torsion part of the skin's load-bearing capacity. On the other hand, by controlling the different cord crossing angles in the middle cross cord layer and the cross cord layers at the top and bottom ends, a better binding effect can be achieved on the skin matrix.
[0055] Furthermore, in this example, the middle second sub-cord layer 21 can be formed by superimposing a portion of the lower part of the second cord layer 20 and a portion of the upper part of the third cord layer 30. This not only makes the first cord segment 1 and the second cord segment 2 more stably combined, but also helps to control the thickness of each cord segment to be basically the same, ensuring better bonding in the scabbard matrix and providing more balanced torsional performance and load-bearing capacity.
[0056] See Figure 3 As shown, a schematic diagram of the structure of the first sub-cord layer 11 is provided as an example. In this example, the structure of the fourth sub-cord layer can also be set with reference to the first sub-cord layer. The cross angle of the cords of the two can be the same, for example, both can be 60°, 65°, 70°, 75° or 80°, or they can be different, and can be independently selected from 60°-80°.
[0057] See Figure 4 As shown, an exemplary structural schematic diagram of the second sub-cord layer 21 is provided. The inclination angle of the cords in the second cord layer 20 is larger and more obvious than that of the cords in the third cord layer 30. The cords in the second cord layer 20 and the cords in the third cord layer 30 intersect each other. The difference between the angle between the cords in the second cord layer 20 and the axial extension line and the angle between the cords in the third cord layer 30 and the axial extension line is the intersection angle of the cords in the second cord layer 20 and the cords in the third cord layer 30. The cords in the third cord layer 30 can be arranged parallel to each other, side by side, or at equal intervals, etc.
[0058] See Figures 5 to 7 As shown, in this example, a groove 41 is formed on the skin matrix 4, and a rigid filler 5 is filled into the groove 41. This improves the overall rigidity of the structure and prevents the skin from over-expanding and deforming. Figure 6 When in a free state, the sac skin is not deformed; see [reference needed]. Figure 7As shown, when in working condition, after the bladder is deformed, the degree of deformation and expansion at that point is limited due to the presence of the groove and rigid filler, preventing further deformation. This increases the stiffness of the system, effectively limiting excessive expansion of the bladder and improving the load-bearing capacity of the torsional bladder portion.
[0059] In summary, this utility model innovatively provides a three-section air spring bladder cord layer based on the existing problems of air spring bladders. Furthermore, it controls the upper and lower ends to have sub-cord layers with cross-shaped cords, and the middle section to consist of sub-cord layers with cross-shaped cords and intermittently spaced cords. When the cross angle of the cords in the middle section is further controlled to be different from the cross angle of the cords at the upper and lower ends, the planar bearing used for torsional motion in the air spring assembly can be eliminated, thereby reducing the complexity of the air spring mechanism and the cost of the suspension assembly. Furthermore, without increasing the bladder volume, the air spring bladder possesses certain anti-torsional characteristics. The torsional portion achieves higher load-bearing capacity through the layered combination of straight and cross-shaped cords. In particular, the cross-shaped cord layers with different cross angles in the middle layer achieve better restraint of the bladder, reducing the outer diameter of the bladder expansion.
[0060] Furthermore, this invention also provides grooves on the bladder skin and uses rigid fillers to further increase the rigidity of the system, which can limit excessive expansion of the bladder skin and improve the load-bearing capacity of the torsional bladder skin.
[0061] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.
Claims
1. A cord layer for an air spring bladder, characterized in that, The cord layer includes a first cord segment, a second cord segment, and a third cord segment. The first cord segment includes a first sub-cord layer in which the cords are arranged in a cross pattern. The second cord segment includes a second sub-cord layer in which the cords are arranged in a cross pattern and a third sub-cord layer in which the cords are arranged at intervals. The third cord segment includes a fourth sub-cord layer in which the cords are arranged in a cross pattern. The first sub-cord layer, the second sub-cord layer, the third sub-cord layer, and the fourth sub-cord layer are arranged sequentially. The cross angles of the cords in the first sub-cord layer and the fourth sub-cord layer are different from the cross angles of the cords in the second sub-cord layer.
2. The cord layer for the air spring sheath according to claim 1, characterized in that, The cross angles of the cords in the first sub-cord layer and the cross angles of the cords in the fourth sub-cord layer are both greater than the cross angles of the cords in the second sub-cord layer.
3. The cord layer for the air spring sheath according to claim 1 or 2, characterized in that, The cross angle of the cords in the first sub-cord layer and the cross angle of the cords in the fourth sub-cord layer are independently selected from 60°-80°; and / or, the cross angle of the cords in the second sub-cord layer is 30°-45°.
4. The cord layer for the air spring bladder according to claim 1, characterized in that, The cord density of each of the first sub-cord layer, the second sub-cord layer, and the fourth sub-cord layer is independently 140-160 cords / 10cm; and / or, the cord density of the third sub-cord layer is 120-150 cords / 10cm.
5. The cord layer for the air spring sheath according to claim 1, characterized in that, The cord layer includes a first cord layer, a second cord layer, a third cord layer, a fourth cord layer, and a fifth cord layer; The first thread layer and a portion of the second thread layer are superimposed to form the first sub-tie layer; The remaining second thread layer and part of the third thread layer are superimposed to form the second sub-tie layer; The remaining third thread layer constitutes the third sub-trailer layer; The fourth thread layer and the fifth thread layer are superimposed to form the fourth sub-tie layer.
6. The cord layer for the air spring sheath according to claim 5, characterized in that, The angle between the cord and the axial extension line in the second layer is 40°-45°; and / or, the angle between the cord and the axial extension line in the third layer is 0-10°.
7. The cord layer for the air spring sheath according to claim 1, 5, or 6, characterized in that, The height of the second sub-curtain layer is 20-40mm; and / or, the height of the second curtain segment is greater than the height of the third curtain segment and less than the height of the first curtain segment.
8. An air spring bladder, characterized in that, The air spring sheath includes a sheath base and a cord layer disposed on the sheath base, the cord layer including the cord layer for air spring sheaths as described in any one of claims 1-7.
9. The air spring bladder according to claim 8, characterized in that, A groove is formed on the bladder substrate corresponding to the second sub-cord layer, and the air spring bladder also includes a rigid filler disposed in the groove.
10. The air spring bladder according to claim 9, characterized in that, The groove has multiple grooves, each groove corresponding to one rigid filler; and / or, the rigid filler is made of metal or rigid plastic; and / or, the rigid filler is interference-fitted with the groove.