Air spring piston damping structure of air spring sliding column assembly

Abstract

The utility model discloses an air spring piston damping structure of an air spring sliding column assembly, which belongs to the technical field of air springs, and comprises a protective cylinder, an air bag is fixedly mounted on the upper side of an inner cavity of the protective cylinder, an upper top seat is fixedly mounted at the upper end of the air bag, and a lower top seat is fixedly mounted at the lower end of the inner cavity of the protective cylinder. A buffer block is clamped in the middle of an inner cavity of the upper top seat, an air spring piston is fixedly installed in the middle of the protective cylinder, a vibration reduction end cover is arranged in the middle of an inner cavity of the air spring piston, a plurality of interference rings are arranged on the side edge of the vibration reduction end cover at equal intervals, and a vibration absorber is arranged on the inner side of the vibration reduction end cover. A plurality of protruding interference rings are arranged on the side edge of the vibration reduction end cover, in the fastening connection process of the vibration reduction end cover and the air spring piston, interference force can be generated between the interference rings and the air spring piston end cover, the interference force is directly transmitted into the vibration reducer and the air spring piston, and therefore abnormal sound generated by vibration of parts is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring technical field more specifically, relate to an air spring piston damping structure of air spring slide column assembly. BACKGROUND

[0002] Air spring slide column assembly is a key component in air suspension system, the main function of air spring slide column assembly is through control inflation to adjust the height of the vehicle body, thereby adapting to different road conditions and driving requirements.

[0003] Air spring slide column assembly will be subjected to torsion in the working process, most air spring slide column assemblies do not have bearing structure at present, so the torsion is borne by the air spring slide column assembly inside or the rubber bushing of the lower end of slide column assembly, since the air bag of air spring slide column assembly has a certain torsional stiffness in the working process, the rubber bushing of the lower end of air spring slide column assembly also has a certain torsional stiffness, so that the relative rotation of the air spring piston in the air spring slide column assembly and the air spring tray on the damper occurs, the rotation will occur a certain probability of abnormal sound in the vehicle use process, causing customer complaints. SUMMARY

[0004] The utility model discloses a kind of air spring piston damping structures of air spring slide column assembly, to solve the problems raised in the above background technology.

[0005] An air spring piston damping structure of air spring slide column assembly, including bushing, the inner cavity upper side of the bushing is fixedly installed with air bag, the upper end of the air bag is fixedly installed with upper abutment, the inner cavity middle part of the upper abutment is clamped and is provided with buffer block, the middle part of the bushing is fixedly installed with air spring piston, the inner cavity middle part of the air spring piston is provided with damping end cover, the side of the damping end cover is equidistantly provided with a plurality of interference rings, the inner side of the damping end cover is provided with damper, the damper is inserted into the inside of bushing from below to top, and rubber bushing upper end and damping end cover fastening connection.

[0006] Further, the upper end of the buffer block is provided with upper sealing cover, the periphery middle part of the upper sealing cover is fixedly installed with first sealing ring, the periphery upper side of the upper sealing cover is provided with snap spring, the upper sealing cover and upper abutment are filled with top glue.

[0007] By adopting the above technical scheme, the upper sealing cover is connected with the upper abutment through the first sealing ring and the snap spring, and the top glue can fill and seal the connection position of the upper sealing cover and the upper abutment, to prevent foreign matter from entering the inside of the device.

[0008] Further, the side of the upper abutment is provided with abutment buckling ring, and the side of the upper abutment is fixedly installed with pressure maintaining valve.

[0009] By adopting the technical scheme, the upper top base is connected with the automobile through the pressure maintaining valve.

[0010] Further, the middle part of the air bag is provided with a supporting ring, the surface of the interference ring is higher than the side of the damping end cover, the upper and lower ends of the interference ring are hollow, and the left and right end roots are thin.

[0011] By adopting the technical scheme, the middle part of the air bag is arranged between the supporting ring and the protecting cylinder, the supporting ring can support and fix the air bag, the interference ring is deformed during the pressing and fitting of the interference ring and the air spring piston, the interference force is directly transmitted to the inside of the damper and the air spring piston, and thus the abnormal sound generated by the component vibration is reduced.

[0012] Further, the lower side of the protecting cylinder is fixedly provided with a dust cover, and the dust cover is a rubber material member.

[0013] By adopting the technical scheme, the dust cover is arranged between the protecting cylinder and the air spring piston, and the lower side of the clamping spring of the protecting cylinder is sealed and protected.

[0014] Further, the lower end of the air spring piston is fixedly provided with an air spring tray, the upper side of the air spring tray is fixedly provided with a check ring, and the upper side of the check ring and the air spring piston are provided with a second sealing ring.

[0015] By adopting the technical scheme, the check ring and the second sealing ring can seal and fix the air spring tray and the air spring piston.

[0016] Further, the lower end of the damper is fixedly provided with a fixed rubber bushing, and the inner side of the air bag at the connecting position of the air spring piston is provided with a piston clamping ring.

[0017] By adopting the technical scheme, the piston clamping ring is arranged on the outer side of the air spring piston in a folded mode, and the inner side of the piston clamping ring is in a sealed state.

[0018] Compared with the prior art, the advantages of the utility model lie in that:

[0019] In the utility model, the side of the damping end cover is provided with a plurality of protruding interference rings, the interference rings generate interference force with the air spring piston end cover during the process of being tightly connected with the air spring piston, the interference force is directly transmitted to the inside of the damper and the air spring piston, and thus the abnormal sound generated by the component vibration is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the utility model;

[0021] Figure 2 It is a split view of the damper of the utility model;

[0022] Figure 3 The structure sectional view of the damping end cover of the utility model;

[0023] Figure 4 The structure schematic view of the damping end cover of the utility model.

[0024] The figure label explanation: 1, upper sealing cover; 2, clasp spring; 3, top glue; 4, pressure retaining valve; 5, support ring; 6, air bag; 7, protector; 8, dust cover; 9, first sealing ring; 10, upper top seat; 11, buffer block; 12, damping end cover; 13, air spring piston; 14, second sealing ring; 15, check ring; 16, air spring tray; 17, damper; 18, rubber bushing; 19, piston buckling ring; 20, top seat buckling ring; 21, interference ring. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] As shown in Figure 1 - Figure 4 The utility model embodiment provides: including the protector 7, the inner chamber upper side of the protector 7 is fixedly installed with air bag 6, the upper end of air bag 6 is fixedly installed with upper top seat 10, the inner chamber middle part of upper top seat 10 is clamped and is provided with buffer block 11, the middle part of the protector 7 is fixedly installed with air spring piston 13, the inner chamber middle part of air spring piston 13 is provided with damping end cover 12, the side of damping end cover 12 is equidistantly provided with a plurality of interference rings 21, the inner side of damping end cover 12 is provided with damper 17, damper 17 is inserted into the inside of the protector 7 from bottom to top, and the upper end of rubber bushing 18 is tightly connected with damping end cover 12;

[0027] The upper end of buffer block 11 is provided with upper sealing cover 1, the periphery middle part of upper sealing cover 1 is fixedly installed with first sealing ring 9, the periphery upper side of upper sealing cover 1 is provided with clasp spring 2, upper sealing cover 1 and upper top seat 10 are filled with top glue 3, upper sealing cover 1 is clamped and connected with upper top seat 10 through first sealing ring 9 and clasp spring 2, top glue 3 can fill and seal the connecting position of upper sealing cover 1 and upper top seat 10, to avoid sundries entering the inside of the device;

[0028] The side of upper top seat 10 is provided with top seat buckling ring 20, the side of upper top seat 10 is fixedly installed with pressure retaining valve 4, and upper top seat 10 is connected with the automobile through pressure retaining valve 4;

[0029] The middle part of the air bag 6 is provided with a supporting ring 5, the surface of the interference ring 21 is higher than the side of the damping end cover 12, the upper and lower ends of the interference ring 21 are hollow, the left and right end roots are thin, the middle part of the air bag 6 is arranged between the supporting ring 5 and the sleeve 7, the supporting ring 5 can play a certain fixed supporting role on the air bag 6, when the interference ring 21 is tightly matched with the air spring piston 13, the interference ring 21 is prone to deformation, so that the interference force is directly transmitted to the inside of the damper 17 and the air spring piston 13, thereby reducing the abnormal sound generated by the vibration of the parts.

[0030] The lower side of the sleeve 7 is fixedly provided with a dust cover 8, the dust cover 8 is a rubber material member, the dust cover 8 is arranged between the sleeve 7 and the air spring piston 13, and can seal and protect the lower side of the clamping spring 2 of the sleeve 7.

[0031] The lower end of the air spring piston 13 is fixedly provided with an air spring tray 16, the upper side of the air spring tray 16 is fixedly provided with a check ring 15, the upper side of the check ring 15 and the air spring piston 13 are provided with a second sealing ring 14, and the check ring 15 and the second sealing ring 14 can seal and fix the air spring tray 16 and the air spring piston 13.

[0032] The lower end of the damper 17 is fixedly provided with a fixed rubber bushing 18, the inner side of the air bag 6 is provided with a piston clamping ring 19 at the connecting position of the air spring piston 13, the piston clamping ring 19 is arranged on the outer side of the air spring piston 13 in a folded manner, so that the inner side of the piston clamping ring 19 is in a sealed state.

[0033] Compared with the air spring sliding column assembly structure of the prior art, the surface of the interference ring 21 is higher than the side of the damping end cover 12, the upper and lower ends of the interference ring 21 are hollow, the left and right end roots are thin, the middle part of the air bag 6 is arranged between the supporting ring 5 and the sleeve 7, the supporting ring 5 can play a certain fixed supporting role on the air bag 6, when the interference ring 21 is tightly matched with the air spring piston 13, the interference ring 21 is prone to deformation, so that the interference force is directly transmitted to the inside of the damper 17 and the air spring piston 13, the left and right end roots of the convex structure are thin, but the interference ring 21 and the damper 17 and the air spring piston 13 can play a supporting role when the parts are subjected to a torsional moment, the above structure can effectively solve the anti-rotation problem, overcome the assembly difficulty in the production process, solve the production and maintenance and after-sales maintenance difficulties, and reduce the abnormal sound generated by the vibration of the parts.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An air spring piston shock absorbing structure of an air spring and slide post assembly comprising a sleeve (7), characterized in that: The inner cavity of the protection cylinder (7) is fixedly installed with an air bag (6), the upper end of the air bag (6) is fixedly installed with an upper top seat (10), the inner cavity of the upper top seat (10) is clamped with a buffer block (11) in the middle, the middle of the protection cylinder (7) is fixedly installed with an air spring piston (13), the inner cavity of the air spring piston (13) is provided with a damping end cover (12) in the middle, a plurality of interference rings (21) are equidistantly arranged on the side of the damping end cover (12), a damper (17) is arranged on the inner side of the damping end cover (12), the damper (17) is inserted into the inside of the protection cylinder (7) from bottom to top, and the upper end of the rubber bushing (18) is tightly connected with the damping end cover (12).

2. The air spring piston shock absorbing structure of an air spring shock strut assembly of claim 1, wherein: The upper end of the buffer block (11) is provided with an upper sealing cover (1), the middle of the periphery of the upper sealing cover (1) is fixedly installed with a first sealing ring (9), the upper side of the periphery of the upper sealing cover (1) is provided with a clamping spring (2), and the upper sealing cover (1) and the upper top seat (10) are filled with a top glue (3).

3. The air spring piston shock absorbing structure of an air spring shock strut assembly of claim 1 wherein: The side of the upper top seat (10) is provided with a top seat buckling ring (20), and the side of the upper top seat (10) is fixedly installed with a pressure maintaining valve (4).

4. The air spring piston shock absorber structure of claim 1, wherein: The middle inner side of the air bag (6) is provided with a supporting ring (5), the surface of the interference ring (21) is higher than the side of the damping end cover (12), the upper and lower ends of the interference ring (21) are hollow, and the left and right end roots are thin.

5. The air spring piston shock absorber structure of an air spring shock strut assembly of claim 1 wherein: The lower side of the protection cylinder (7) is fixedly installed with a dust cover (8), and the dust cover (8) is a rubber material member.

6. The air spring piston shock absorber structure of an air spring shock strut assembly of claim 1 wherein: The lower end of the air spring piston (13) is fixedly installed with an air spring tray (16), the upper side of the periphery of the air spring tray (16) is fixedly installed with a check ring (15), and the upper side of the check ring (15) and the air spring piston (13) are provided with a second sealing ring (14).

7. The air spring piston shock absorber structure of an air spring shock strut assembly of claim 1 wherein: The lower end of the damper (17) is fixedly installed with a fixed rubber bushing (18), and the inner side of the air bag (6) is provided with a piston buckling ring (19) at the connecting position of the air spring piston (13).

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