Built-in upper limit anti-folding and anti-turning air bag

Abstract

The utility model discloses a built-in upper limit anti-folding and anti-turning air bag, which relates to the technical field of air suspensions, and comprises an air bag structure, the air bag structure is internally provided with a bag cavity, the top of the air bag structure is provided with a vent hole communicated with the bag cavity, and the vent hole is used for the circulation of air in the bag cavity; and the built-in upper limiting mechanism is fixedly installed in a bag cavity of the air bag structure, and the built-in upper limiting mechanism is used for limiting the length of the bag cavity. The built-in upper limiting mechanism matched with the air bag structure is installed in the air bag structure, the length of a bag cavity of the air bag structure can be limited, risks such as overlength of the bag cavity, folding of the air bag structure and lateral inclination of a vehicle are avoided, meanwhile, the built-in upper limiting mechanism is installed in the bag cavity of the air bag structure, the structure is simple, the size is small, and cost is low; and the cost is reduced while the failure rate is reduced, so that the actual use requirements are better met.

Description

Technical Field

[0001] The utility model relates to the technical field of air suspension, in particular to an air bag with a built-in upper limit anti-folding and anti-rollover function. Background Art

[0002] Trucks have axles connected to their frames via suspensions. Suspension is a key component that connects the axles and frame, playing a crucial role in maintaining vehicle balance, carrying load, and absorbing road bumps. With the advancement of society, suspension has gradually evolved into air suspensions, of which the airbag is the most core component.

[0003] In the prior art, the current method of limiting the airbag in the air suspension is mainly through installing a limiting device at the external position of the airbag, and limiting the airbag by the limiting device at the external position. However, this limiting device independently installed on the outside of the airbag is affected by the volume of the airbag itself, resulting in a larger overall volume of the limiting device, which not only increases the overall weight and cost of the air suspension, but also the limiting device at the external position of the airbag is easily affected by the external environment and easily malfunctions, resulting in an increased failure rate, which cannot meet the current demand for energy-saving and efficient use. For this reason, a built-in upper limit anti-folding and anti-rollover airbag with a limiting device at the internal position of the airbag is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide an airbag with a built-in upper limit to prevent folding and turning, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a built-in upper limit anti-folding and anti-rollover airbag, comprising:

[0006] An airbag structure, wherein the airbag structure has an airbag cavity inside, and a vent hole connected to the airbag cavity is provided on the top of the airbag structure, and the vent hole is used for the circulation of gas in the airbag cavity;

[0007] A built-in upper limit mechanism is fixedly installed in the bag cavity of the airbag structure, and is used to limit the length of the bag cavity.

[0008] Preferably, the built-in upper limit mechanism includes:

[0009] A limiting rope, wherein the limiting rope is in the shape of a folded ring with both ends in the same direction;

[0010] An upper limit pull ring, the upper limit pull ring is fixedly arranged at the top position of the inner side of the airbag structure, and one end of the limit rope passes through the upper part of the upper limit pull ring and then extends downward;

[0011] The limiting post is fixedly arranged at the bottom position of the inner side of the airbag structure, and the two ends of the limiting rope are facing the limiting post and are fixedly connected to the limiting post.

[0012] Preferably, both ends of the limiting rope are provided with rope sleeves, the upper end of the limiting column is fixedly connected to a lower limiting hook bent downward, and the rope sleeve is movably sleeved on the outer wall of the lower limiting hook.

[0013] Preferably, the limiting rope and the rope sleeve are an integrally formed structure, and the limiting rope is made of a corrosion-resistant and tensile-resistant material.

[0014] Preferably, a built-in lower limiting mechanism is provided at a position corresponding to the limiting column on the inner bottom of the airbag structure, and the built-in lower limiting mechanism is used to limit the position of the limiting cable on the limiting column.

[0015] Preferably, the built-in lower limit mechanism includes a limit block, the bottom end of the limit block is provided with a limit hook groove that matches the shape of the lower limit hook, and the top of the limit block is provided with a limit ring groove, the limit ring groove is used to make way for the upper limit pull ring, and the limit hook groove is connected to the limit ring groove.

[0016] Preferably, the airbag structure includes a bag skin, an upper cover plate, a base and a piston;

[0017] The upper cover plate is located above the base, the bladder skin is wrapped between the upper cover plate and the base, and the inner space between the upper cover plate, the bladder skin and the base forms a bladder cavity.

[0018] Preferably, the vent hole is opened at the side position of the top end of the upper cover plate, the upper limit pull ring is located at the bottom end of the upper cover plate, two upper bolts are symmetrically arranged at the top end of the upper cover plate, and the upper limit pull ring is fixedly connected to the upper cover plate through the upper bolts.

[0019] Preferably, the piston is connected to the bottom end of the base, an assembly hole is provided in the middle of the piston, an assembly bolt is provided under the piston, a threaded hole matching the assembly bolt is provided at the bottom end of the limiting column, and the outer wall of the assembly bolt passes through the assembly hole and is threadedly connected to the threaded hole.

[0020] Preferably, the piston is provided with mounting holes, and the mounting holes are multiple and arranged at intervals in an array.

[0021] Compared with the prior art, the technical effects of the present invention are:

[0022] The utility model installs a matching built-in upper limit mechanism inside the airbag structure, which not only limits the length of the airbag cavity of the airbag structure, avoiding risks such as excessive length of the airbag cavity, folding of the airbag structure, and vehicle rollover, but also is installed in the airbag cavity of the airbag structure with a simple structure, small size, and low cost, which reduces the failure rate and cost at the same time, thereby better meeting actual usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view structural diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0025] Figure 3 This is a front view structural diagram of the limiting device of the utility model.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting rope of the utility model.

[0027] Figure 5 This is a schematic top view of the three-dimensional structure of the limit block of the utility model.

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the limit block of the utility model when viewed from above.

[0029] Figure 7 This is a bottom-up three-dimensional structural diagram of the upper cover of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the base of the utility model from a top view.

[0031] Figure 9 This is a schematic diagram of the top view of the piston of the utility model.

[0032] Figure 10 This is a schematic diagram of the separate structure of the limit column and the assembly bolt of the utility model.

[0033] In the figure: 1. Upper cover; 2. Upper bolt; 3. Vent; 4. Piston; 5. Mounting hole; 6. Bladder skin; 7. Assembly hole; 8. Upper limit pull ring; 9. Limit rope; 10. Limit block; 11. Limit ring groove; 12. Limit hook groove; 13. Base; 14. Limit column; 15. Lower limit hook; 16. Threaded hole; 17. Rope sleeve; 18. Assembly bolt. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The utility model provides Figures 1-10 The invention shows an air bag with built-in upper limit anti-folding and anti-rollover function.

[0036] Example 1, as Figure 1-Figure 3 As shown, it includes an airbag structure and a built-in upper limit mechanism, the airbag structure has a bag cavity inside, and a vent 3 connected to the bag cavity is provided on the top of the airbag structure; wherein, the airbag structure includes a bag skin 6, an upper cover plate 1, a base 13 and a piston 4, the piston 4 is connected to the bottom end position of the base 13, the upper cover plate 1 is located above the base 13, the bag skin 6 is wrapped between the upper cover plate 1 and the base 13, the inner space between the upper cover plate 1, the bag skin 6 and the base 13 forms a bag cavity, the vent 3 is opened at the top side position of the upper cover plate 1, the vent 3 is used for the circulation of gas in the bag cavity, the inner bottom of the bag skin 6 is wrapped around the outer periphery of the base 13, the inner top of the bag skin 6 is fixed to the outer wall of the upper cover plate 1, and the space between the three forms a bag cavity, and the built-in upper limit mechanism is installed in the bag cavity, which can avoid the problem of easy damage and increased failure rate when exposed to the external environment, and the vent 3 meets the gas circulation caused by the change of the volume inside the bag cavity, thereby ensuring the normal operation of the airbag structure;

[0037] Specifically, if Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 and Figure 10 As shown, the built-in upper limit mechanism is fixedly installed in the bag cavity of the airbag structure. The built-in upper limit mechanism is used to limit the length of the bag cavity. By limiting the length of the bag cavity of the airbag structure through the built-in upper limit mechanism, it can effectively avoid the risk of the bag skin 6 being separated from the base 13, the bag skin 6 being infinitely stretched, resulting in an excessively large bag cavity, the bag skin 6 being folded, and the vehicle being tilted, thereby effectively improving the use quality of the air suspension and improving the safety of vehicle driving; wherein, the built-in upper limit mechanism includes: a limit rope 9, an upper limit pull ring 8 and a limit column 14, the limit rope 9 is a folded ring with both ends in the same direction (such as Figure 3 and Figure 4The upper limit pull ring 8 is fixedly provided at the top position of the inner side of the airbag structure, and the upper limit pull ring 8 is located at the bottom end of the upper cover plate 1. Two upper bolts 2 are symmetrically provided at the top of the upper cover plate 1. The upper limit pull ring 8 is fixedly connected to the upper cover plate 1 by the upper bolts 2. The upper limit pull ring 8 and the upper cover plate 1 are connected and fixed by the upper bolts 2, so that the upper limit pull ring 8 and the upper cover plate 1 can be detachably fixed. While the upper limit pull ring 8 is firmly installed at the bottom end of the upper cover plate 1, the upper limit pull ring 8 can be detachably maintained, thereby increasing the convenience of subsequent maintenance work; one end of the limiting rope 9 passes through the upper limit pull ring 8 and extends downward, and the middle part of the upper limit pull ring 8 has a downwardly protruding folded ring, which can form a detachable ring with the upper cover plate 1. A through hole for the limiting rope 9 to pass through allows one end of the limiting rope 9 to pass between the upper limit pull ring 8 and the upper cover plate 1, so that the upper limit pull ring 8 can limit the limiting rope 9 while facilitating the installation of the limiting rope 9 on the upper limit pull ring 8; the limiting column 14 is fixedly arranged at the bottom position of the inner side of the airbag structure, and the two ends of the limiting rope 9 face the limiting column 14 and are clamped and fixed to the limiting column 14. The bottom of the limiting rope 9 is locked and fixed to the limiting column 14, limiting the bottom of the limiting rope 9, and cooperating with the upper limit pull ring 8 to limit and fix the top of the limiting rope 9, it can be combined into a built-in upper limit mechanism to limit the bag cavity of the airbag structure, prevent the bag skin 6 from detaching from the base 13, prevent the bag skin 6 from being infinitely stretched to cause the bag cavity to increase, and prevent the bag skin 6 from folding.

[0038] Furthermore, both ends of the limiting rope 9 are provided with a rope sleeve 17, the limiting rope 9 and the rope sleeve 17 are an integrally formed structure, and the limiting rope 9 is made of corrosion-resistant and tensile-resistant material, specifically, corrosion-resistant plastic or metal can be used. The upper end of the limiting column 14 is fixedly connected to a lower limiting hook 15 bent downward, and the rope sleeve 17 is movably sleeved on the outer wall of the lower limiting hook 15. The limiting rope 9 is made of corrosion-resistant and tensile-resistant material, which not only makes the overall strength of the limiting rope 9 higher, but also allows the rope sleeve 17 at the end of the limiting rope 9 to be slightly bent and deformed. This makes it convenient for the rope sleeves 17 at both ends of the limiting rope 9 to be sleeved on the two lower limiting hooks 15 at the top of the limiting column 14, thereby improving the convenience of assembly. In some embodiments, the rope sleeve 17 can be formed by bending the limiting rope 9 to form a hollow end, and the position between one end and the outer wall can be reinforced by welding. In other embodiments, the rope sleeve 17 can also be separately forged or welded to the end of the limiting rope 9.

[0039] Example 2, as Figure 3 、 Figure 5 、 Figure 6 and Figure 9 As shown, based on Example 1, a built-in lower limiting mechanism is provided at the inner bottom of the airbag structure corresponding to the limiting post 14. The built-in lower limiting mechanism is used to limit the position of the limiting cable 9 on the limiting post 14. The built-in lower limiting mechanism can limit the position of the limiting post 14 and the limiting cable 9 of the cable sleeve 17;

[0040] It should be noted that the built-in lower limit mechanism includes a limit block 10, and a limit hook groove 12 that matches the shape of the lower limit hook 15 is provided at the bottom end of the limit block 10. A limit ring groove 11 is provided at the top end of the limit block 10. The limit ring groove 11 is used to make way for the upper limit pull ring 8, and the limit hook groove 12 is connected to the limit ring groove 11. The limit ring groove 11 and the limit hook groove 12 are respectively provided at the top and bottom ends of the limit block 10, which can meet the requirements of making way for the upper limit pull ring 8, while meeting the requirements of the rope sleeve 17 of the limit rope 9 passing through the limit block 10 and connecting with the lower limit hook 15, and at the same time, partially fitting with the lower limit hook 15 through the limit hook groove 12, so that the limit block 10 is stably installed on the outer wall of the limit column 14;

[0041] Furthermore, an assembly hole 7 is provided in the middle of the piston 4, an assembly bolt 18 is provided below the piston 4, and a threaded hole 16 matching the assembly bolt 18 is provided at the bottom end of the limiting column 14. The outer wall of the assembly bolt 18 passes through the assembly hole 7 and is threadedly connected to the threaded hole 16. After the assembly bolt 18 passes through the assembly hole 7 from the bottom end of the piston 4, it is threadedly connected to the threaded hole 16 on the limiting column 14, so that the installation and fixation of the limiting column 14 can be completed, and disassembly and assembly are convenient; in addition, a mounting hole 5 is provided on the piston 4, and the mounting holes 5 are multiple and arranged in an array shape. The setting of the mounting holes 5 can enable the piston 4 to be connected and assembled with the guide arm on the external air suspension, making the installation of the airbag structure on the air suspension more convenient and efficient.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A built-in upper limit anti-folding and anti-rollover airbag, characterized in that: include: An airbag structure, wherein the airbag structure has a cavity inside, and a vent hole (3) connected to the cavity is provided on the top of the airbag structure, and the vent hole (3) is used for the circulation of gas in the cavity; A built-in upper limit mechanism, which is fixedly installed in the bag cavity of the airbag structure and is used to limit the length of the bag cavity; Wherein, the built-in upper limit mechanism includes: A limiting rope (9), wherein the limiting rope (9) is in a folded ring shape with both ends pointing in the same direction; An upper limit pull ring (8), wherein the upper limit pull ring (8) is fixedly arranged at the top position of the inner side of the airbag structure, and one end of the limiting rope (9) passes through the upper part of the upper limit pull ring (8) and then extends downward; A limiting column (14) is fixedly arranged at the bottom position of the inner side of the airbag structure, and both ends of the limiting rope (9) face the limiting column (14) and are fixedly connected to the limiting column (14).

2. The built-in upper limit anti-folding and anti-rollover airbag according to claim 1, characterized in that: Both ends of the limiting rope (9) are provided with rope sleeves (17); the upper end of the limiting column (14) is fixedly connected with a downwardly bent lower limiting hook (15); and the rope sleeve (17) is movably sleeved on the outer wall of the lower limiting hook (15).

3. The built-in upper limit anti-folding and anti-rollover airbag according to claim 2, characterized in that: The limiting rope (9) and the rope sleeve (17) are an integrally formed structure, and the limiting rope (9) is made of a corrosion-resistant and tensile-resistant material.

4. The built-in upper limit anti-folding and anti-rollover airbag according to claim 3, characterized in that: A built-in lower limiting mechanism is provided at a position corresponding to the limiting column (14) on the inner bottom of the airbag structure. The built-in lower limiting mechanism is used for limiting the limiting rope (9) on the limiting column (14).

5. The built-in upper limit anti-folding and anti-rollover airbag according to claim 4, characterized in that: The built-in lower limit mechanism comprises a limit block (10), a limit hook groove (12) having a shape matching that of the lower limit hook (15) is provided at the bottom end of the limit block (10), a limit ring groove (11) is provided at the top end of the limit block (10), the limit ring groove (11) is used to make way for the upper limit pull ring (8), and the limit hook groove (12) is communicated with the limit ring groove (11).

6. The built-in upper limit anti-folding and anti-rollover airbag according to claim 5, characterized in that: The airbag structure comprises a bag skin (6), an upper cover plate (1), a base (13) and a piston (4); The upper cover plate (1) is located above the base (13), the capsule skin (6) is wrapped between the upper cover plate (1) and the base (13), and the inner space between the upper cover plate (1), the capsule skin (6) and the base (13) forms a capsule cavity.

7. The built-in upper limit anti-folding and anti-rollover airbag according to claim 6, characterized in that: The vent hole (3) is provided at the side position of the top end of the upper cover plate (1), the upper limit pull ring (8) is located at the bottom end of the upper cover plate (1), two upper bolts (2) are symmetrically provided at the top end of the upper cover plate (1), and the upper limit pull ring (8) is fixedly connected to the upper cover plate (1) via the upper bolts (2).

8. The built-in upper limit anti-folding and anti-rollover airbag according to claim 7, characterized in that: The piston (4) is connected to the bottom end of the base (13), an assembly hole (7) is provided in the middle of the piston (4), an assembly bolt (18) is provided below the piston (4), a threaded hole (16) matching the assembly bolt (18) is provided at the bottom end of the limiting column (14), and the outer wall of the assembly bolt (18) passes through the assembly hole (7) and is threadedly connected to the threaded hole (16).

9. The built-in upper limit anti-folding and anti-rollover airbag according to claim 8, characterized in that: The piston (4) is provided with mounting holes (5), and the mounting holes (5) are multiple and arranged at intervals in an array.

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