Airbag connecting structure, automobile suspension structure and automobile

By designing the airbag connection structure, including the cover plate, support, and bracing structure, the problem of excessive shear force at the connection points of parts in the air suspension structure was solved, enhancing the force transmission capacity and connection reliability, preventing damage to parts, and improving the stability of the suspension structure.

CN116442702BActive Publication Date: 2025-12-09DONGFENG LIUZHOU MOTOR
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Patent Information

Application Number
CN202310300405.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-24
Publication Date
2025-12-09
Estimated Expiration
2043-03-24

AI Technical Summary

Technical Problem

Existing air suspension structures generate excessive shear forces at component connections when transmitting forces and torques between the wheels and the chassis, leading to component damage and affecting the service life of the suspension structure.

Method used

Design an airbag connection structure including a cover plate, a support, and a supporting structure. The airbag is set on the upper end of the support. The supporting structure transmits force between the cover plate and the support, enhances the force transmission capacity, and reduces the stress at the connection by abutting the force transmission surface and the mating surface.

Benefits of technology

The force transmission capacity of the airbag connection structure has been enhanced, the stress at the connection between the cover plate and the support has been reduced, the reliability of the connection has been ensured, damage to parts has been avoided, and the stability of the suspension structure has been improved.

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Abstract

The application discloses an air bag connecting structure, an automobile suspension structure and an automobile. The air bag connecting structure comprises a cover plate, a support, an air bag and a supporting structure. The cover plate is arranged between the connecting position of an axle and a frame and a rear air spring. The support is arranged at the upper end of the cover plate. The air bag is arranged at the upper end of the support and has an up-down elongation or contraction activity stroke. The supporting structure is arranged between the cover plate and the support and can transmit the up-down force of the cover plate to the support. The air bag connecting structure can increase the force transmission capacity of the automobile suspension structure, greatly reduces the stress at the connecting position of the cover plate and the support, ensures the reliability of the connection, avoids the damage of the air bag connecting structure during use, and avoids the consequence that the air bag connecting structure cannot be used.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile suspension, in particular to an air bag connecting structure, an automobile suspension structure and an automobile. BACKGROUND

[0002] The automobile suspension is a general term for all force transmission connecting devices between the frame and the axle of the automobile, which is used for transmitting the force and torque between the wheels and the frame, buffering the impact force received by the vehicle body, and the air suspension is a very common automobile suspension structure, which mainly includes an air spring and a shock absorber with variable damping. Since the hardness of the air spring can be automatically adjusted as needed, it has gradually become the first choice of people.

[0003] However, the existing air suspension structure will be subjected to a large stress when transmitting the force and torque between the wheels and the frame, especially the shear force at the connection of each part is too large, which leads to the damage of each part and causes the suspension structure to be unable to use. SUMMARY

[0004] The main purpose of the present application is to provide an air bag connecting structure to solve the problems of the existing air bag connecting structure.

[0005] To achieve the above purpose, the air bag connecting structure provided by the present application comprises:

[0006] A cover plate is arranged between the connecting part of the axle and the rear air spring;

[0007] A support is arranged at the upper end of the cover plate;

[0008] An air bag is arranged at the upper end of the support, and the air bag has an active stroke of elongation or contraction in the vertical direction; and

[0009] A support structure is arranged between the cover plate and the support, which can transmit the force in the vertical direction from the cover plate to the support.

[0010] Optionally, the support structure comprises:

[0011] Two force transmission surfaces are arranged at the lower end of the support and opposite to the two sides of the air bag, and

[0012] Two matching surfaces are arranged at the upper end of the cover plate and correspond to the two force transmission surfaces, and the two matching surfaces respectively abut the two force transmission surfaces.

[0013] Optionally, the cover plate is provided with a first boss and a second boss arranged at intervals on the end surface arranged in the transverse direction, and the first boss and the second boss are arranged in the transverse direction.

[0014] Two said matching faces are respectively arranged on the upper end faces of the first boss and the second boss along one side in the transverse direction.

[0015] Optionally, the lower end face of the support is provided with a protruding part, which is located on one side of the support in the longitudinal direction, and the protruding part is arranged to extend downward to be fixedly connected with the cover plate.

[0016] Optionally, the cover plate is further provided with a third boss, which is arranged on the end face of the cover plate arranged in the transverse direction, and the third boss is arranged on the side of the second boss away from the first boss, and the third boss and the end face of the second boss arranged in the transverse direction are respectively provided with fixing holes.

[0017] The end face of the protruding part arranged in the transverse direction is provided with two matching holes, and the two matching holes are arranged correspondingly to the two fixing holes, and the two matching holes and the two fixing holes are connected by bolts to connect the support and the cover plate.

[0018] Optionally, the two ends of the protruding part in the transverse direction are provided with two support plates, the upper ends of the two support plates are fixedly connected with the lower end of the support, and each support plate is arranged to be inclined from top to bottom towards the direction close to the protruding part.

[0019] Optionally, the upper end of the support is further provided with a mounting face, the mounting face is in contact with the lower end face of the air bag, a through hole is arranged at the center position of the mounting face, and the through hole avoids the arrangement of the protruding part.

[0020] The air bag connecting structure further comprises a fixed screw and a locking nut matched with each other, the upper end of the fixed screw is fixedly connected with the center position of the lower end face of the air bag, the lower end of the fixed screw passes through the through hole, and the locking nut is threadedly fixed to the part of the fixed screw passing out of the through hole, so as to tightly fix the air bag on the support.

[0021] Optionally, the upper end of the support is further provided with two positioning parts, and the two positioning parts are located on opposite sides of the mounting face.

[0022] The lower end of the air bag is further provided with two matching parts, the two matching parts are arranged correspondingly to the two positioning parts, and the two matching parts are fixedly connected with the two positioning parts to fix the installation angle of the air bag.

[0023] The application further provides an automobile suspension structure, which comprises:

[0024] An axle is used to be connected with a vehicle frame.

[0025] Four rear air springs are mounted on the upper end of the axle for connection with the vehicle frame, and the four rear air springs are configured to correspond to the four tires.

[0026] Four airbag connection structures are installed on the upper end of the axle for fixed connection with the axle. Each airbag connection structure is respectively located on the side of each rear air spring facing away from each tire. Each airbag connection structure includes any of the airbag connection structures described above.

[0027] The present invention also proposes an automobile, the automobile including the automobile suspension structure.

[0028] In the technical solution provided by this invention, the airbag is disposed at the upper end of the support, which can transmit the force of the support in the vertical direction to the vehicle frame, thereby increasing the force transmission capacity of the airbag connection structure. A support structure is provided between the cover plate and the support, which is the main force transmission structure between the cover plate and the support. It can transmit the force of the cover plate in the vertical direction to the support. The support structure can greatly reduce the stress at the connection between the cover plate and the support while increasing the force transmission capacity of the airbag connection structure, ensuring the reliability of the connection and avoiding the consequences of damage to parts during use, which would render the airbag connection structure unusable. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A three-dimensional schematic diagram of an embodiment (at an angle) of the airbag connection structure provided by the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the airbag connection structure (from another angle);

[0032] Figure 3 for Figure 1 A three-dimensional schematic diagram of the support (at an angle) in the middle;

[0033] Figure 4 for Figure 1 A three-dimensional schematic diagram of the support (from another angle);

[0034] Figure 5 for Figure 1 A three-dimensional schematic diagram of the cover plate.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] Reference Name Reference Name 100 Air bag connecting structure 23 Mounting surface 1 Cover plate 24 Through hole 11 First boss 25 Positioning portion 12 Second boss 3 Air bag 13 Third boss 31 Cooperating portion 14 Fixing hole 4 Support structure 2 Support base 41 Force transmission surface 21 Protrusion 42 Cooperating surface 211 Support plate 5 Fixing screw 22 Cooperating hole 6 Lock nut

[0037] The objectives, features and advantages of the present application will be further illustrated with reference to the embodiments, with reference to the drawings. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0039] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0040] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0041] At present, the commonly used air bag connecting structure has higher problems.

[0042] The automobile suspension is the general term of all force transmission connecting devices between the frame and the axle of the automobile, which is used to transmit the force and torque between the wheels and the frame, and to buffer the impact force received by the vehicle body. The air suspension is a very common automobile suspension structure, which mainly includes an air spring and a shock absorber with variable damping. Since the hardness of the air spring can be automatically adjusted according to the needs, it has gradually become the first choice of people.

[0043] However, the existing air suspension structure is subjected to great stress when transmitting the force and torque between the wheel and the frame, especially the excessive shear force at the connection of each part, which leads to the damage of each part and results in the failure of the suspension structure.

[0044] To solve the above problems, the air bag connecting structure provided by the present application comprises a cover plate, a support, an air bag and a support structure. Figures 1 to 5 The air bag connecting structure 100 provided by the present application comprises a cover plate, a support, an air bag and a support structure.

[0045] Please refer to Figures 1 to 3 The air bag connecting structure 100 comprises a cover plate 1, a support 2, an air bag 3 and a support structure 4. The cover plate 1 is used to be installed between the connection of the axle and the frame and the rear air spring. The support 2 is arranged at the upper end of the cover plate 1. The air bag 3 is arranged at the upper end of the support 2 and has an active stroke of lengthening or shrinking in the up-down direction. The support structure 4 is arranged between the cover plate 1 and the support 2 and can transmit the force in the up-down direction of the cover plate 1 to the support 2.

[0046] In the technical scheme provided by the present application, the air bag 3 is arranged at the upper end of the support 2 and can transmit the force in the up-down direction of the support 2 to the frame, which increases the force transmission capacity of the air bag connecting structure 100. The support structure 4 is arranged between the cover plate 1 and the support 2 and is the main force transmission structure between the cover plate 1 and the support 2, which can transmit the force in the up-down direction of the cover plate 1 to the support 2. The support structure 4 can greatly reduce the stress at the connection of the cover plate 1 and the support 2 while increasing the force transmission capacity of the air bag connecting structure 100, which ensures the reliability of the connection and avoids the damage of the parts of the air bag connecting structure 100 during use, thereby avoiding the consequence that the air bag connecting structure 100 cannot be used.

[0047] Further, the present application does not limit the specific form of the support structure, in one embodiment, the support structure 4 comprises two force transmission surfaces 41 and two matching surfaces 42, two of the force transmission surfaces 41 are arranged at the lower end of the support base 2 and are oppositely arranged at the two sides of the air bag 3, two of the matching surfaces 42 are arranged corresponding to the two force transmission surfaces 41, and each of the matching surfaces 42 is arranged at the upper end of the cover plate, and the two matching surfaces 42 are respectively in abutment with the two force transmission surfaces 41. By arranging the force transmission surfaces 41 and the matching surfaces 42 to be oppositely arranged and in abutment, the cover plate 1 can transmit most of the force in the up-down direction from each of the force transmission surfaces 41 to each of the matching surfaces 42, thereby avoiding damage to the connecting parts, and at the same time, arranging the two force transmission surfaces 41 at the two sides of the air bag 3 can make the two force transmission surfaces 42 receive as uniform force as possible, thereby avoiding the phenomenon that the support structure 4 is damaged due to uneven force.

[0048] In order to make the support structure 4 have sufficient installation space, the cover plate 1 is provided with a first boss 11 and a second boss 12 arranged at intervals on the end surface arranged in the transverse direction, the first boss 11 and the second boss 12 are both arranged in the transverse direction, and the two matching surfaces 42 are respectively arranged on the side in the transverse direction of the upper end surface of the first boss 11 and the second boss 12. Such an arrangement can make the support structure 4 have sufficient installation space, thereby facilitating its installation.

[0049] In other embodiments of the present application, each of the force transmission surfaces 41 and each of the matching surfaces 42 can also be arranged to be in abutment with each other in the transverse direction and / or in the longitudinal direction, each of the force transmission surfaces 41 is arranged at the lower end of the support base, each of the matching surfaces 42 is arranged on the end surface arranged in the transverse direction of the first boss 11 and the second boss 12 and / or on the side in the transverse direction of the end surface arranged in the longitudinal direction of the first boss 11 and the second boss 12, and each of the force transmission surfaces 41 and each of the matching surfaces 42 are in abutment with each other in the transverse direction and / or in the longitudinal direction. Such an arrangement can make the support structure 4 also serve as the main force transmission structure between the cover plate 1 and the support base 2, thereby transmitting the force in the transverse direction and / or in the longitudinal direction of the cover plate 1 to the support base 2, having the effect of reducing the stress at the connection between the cover plate 1 and the support base 2, and at the same time, arranging the two force transmission surfaces 41 at the two sides of the air bag 3 can make the two force transmission surfaces 42 receive as uniform force as possible, thereby avoiding the phenomenon that the support structure 4 is damaged due to uneven force.

[0050] It should be noted that in order to realize the force transmission function of the support structure 4, the support structure 4 can also be provided as a matched bolt and groove, the bolt is arranged at the upper end of the cover plate in the up-down direction, the groove is arranged at the lower end of the support in the up-down direction, the bolt is inserted into the groove from the slot of the groove, and the bolt and the groove can transmit the force of the cover plate in the up-down direction to the support. At the same time, the matching form of the bolt and the groove can further limit the relative movement between the cover plate and the support, and ensure the stability of the air bag connection structure during operation. Therefore, the support structure 4 can be provided as a bolt and a groove, or other structures with force transmission function, and the present application does not limit this.

[0051] In order to make the connection between the support 2 and the cover plate 1 have enough operation space, the lower end surface of the support 2 is provided with a convex part 21, the convex part 21 is located at the longitudinal direction of the support 2, and the convex part 21 is arranged downwardly to be fixedly connected with the cover plate 1. By arranging the connection between the support 2 and the cover plate 1 on the convex part 21, because the convex part 21 is located at the lower end of the support 2 and is arranged downwardly, the operation space of the connection between the cover plate 1 and the support 2 can be ensured, and the user can conveniently install and disassemble.

[0052] Specifically, please refer to Figures 4 to 5 In the embodiment of the present application, the cover plate 1 is also provided with a third boss 13, the third boss 13 is located on the end surface of the cover plate 1 arranged in the transverse direction, the third boss 13 is arranged on the side of the second boss 12 away from the first boss 11, and the third boss 13 and the second boss 12 are respectively provided with fixing holes 14 on the end surface arranged in the transverse direction; the convex part 21 is provided with two matching holes 31 on the end surface arranged in the transverse direction, and two fixing holes 14 and two matching holes 31 are arranged correspondingly; two matching holes 31 and two fixing holes 14 are connected by bolts, and are used to connect the support 2 and the cover plate 1. The support 2 and the cover plate 1 are connected by bolts, and the fixing holes 14 and the matching holes 31 are provided as threaded holes. Such arrangement has high locking force, can fix the relative position of the support 2 and the cover plate 1, so that the relative position will not be deviated, thereby affecting the force transmission effect of the support structure 4. Arranging two connection positions can make the connection between the support 2 and the cover plate 1 more stable, prevent the installation angle from deviating; at the same time, since the two fixing holes 14 and the two matching holes 31 are arranged on the outside of the air bag connection structure 100, there will be no problem of insufficient tightening operation space during installation, and the tightening bolt can be conveniently installed.

[0053] In other embodiments of the present application, the connection between the support 2 and the cover plate 1 can also be in the form of a welded connection, a rivet connection, or other fixed connection, and the present application does not limit this.

[0054] For example, in other embodiments of the present application, the cover plate 1 is further provided with a third boss 13 located on the transversely arranged end face of the cover plate 1, and the third boss 13 is arranged on the side of the second boss 12 away from the first boss 11, and the transversely arranged end face of the third boss 13 and the second boss 12 is a welding surface; the end face of the protrusion 21 is provided with two connecting surfaces corresponding to the two welding surfaces, and each welding surface and each connecting surface are mutually attached and connected by welding. This arrangement can ensure the connection strength between the cover plate 1 and the support 2, so that the connection between the cover plate 1 and the support 2 can withstand greater stress and prevent the phenomenon of part damage.

[0055] Further, the two ends of the protrusion 21 in the transverse direction are provided with two support plates 211, the upper ends of the two support plates 211 are fixedly connected to the lower end of the support 2, and each support plate 211 is arranged inclined from top to bottom towards the protrusion 21. The arrangement of the support plate 211 can increase the structural strength of the protrusion 21, so that the protrusion 21 will not deform or even break when subjected to greater stress.

[0056] Further, the upper end of the support 2 is further provided with a mounting surface 23, the mounting surface 23 is attached to the lower end face of the air bag 3, a through hole 24 is formed in the center of the mounting surface 23, the through hole 24 avoids the protrusion 21, and the air bag connecting structure 100 further comprises a fixed screw 5 and a locking nut 6 that cooperate with each other, the upper end of the fixed screw 5 is fixedly connected to the center of the lower end face of the air bag 3, the lower end of the fixed screw 5 passes through the through hole 24, and the locking nut 6 is threadedly fixed to the part of the fixed screw 5 that passes out of the through hole 24, so as to fasten the air bag 3 to the support 2. By fastening the air bag 3 to the support 2, the support 2 can completely and uniformly transmit force to the air bag 3 when transmitting force, ensuring the stability of the structure.

[0057] It should be noted that in order to achieve complete transmission of the force in the up-down direction on the support 2 to the air bag 3, the connection between the support 2 and the air bag 3 can also be in the form of a buckle fastening, a welded connection, or other fixed connection, and the present application does not limit this.

[0058] Specifically, in other embodiments of the present application, the upper end of the support 2 is provided with a mounting surface, a through hole 24 is formed in the center of the mounting surface 2, the lower end of the air bag 3 is provided with a plurality of buckles, each of which extends downward and is symmetrically arranged about the center of the lower end of the air bag 3, and the lower end of each buckle passes through the through hole 24 and is clamped with the lower end of the support 2, thereby fastening the air bag 3 to the support 2, so that the support 2 can completely and uniformly transmit force to the air bag 3 when transmitting force, ensuring the stability of the structure.

[0059] In order to prevent the air bag 3 from shifting or rotating when it is installed on the support 2, resulting in a deviation in the installation angle, the position of the air bag 3 needs to be further fixed. Specifically, in an embodiment of the present application, the upper end of the support 2 is also provided with two positioning portions 25, which are arranged on opposite sides of the mounting surface 23, and the lower end of the air bag 3 is also provided with two cooperating portions 31, which are arranged in correspondence with the two positioning portions 25 and are fixedly connected with the two positioning portions 25. In this embodiment, the positioning portions 25 are arranged as positioning pins, and the cooperating portions 31 are arranged as positioning holes, and the positioning pins are inserted into the positioning holes. This arrangement can fix the installation angle of the air bag 3 during installation, so that the air bag 3 is installed at the correct angle and does not shift during operation.

[0060] In other embodiments of the present application, the positioning portions 25 and the cooperating portions 31 can also be arranged as other cooperating structures that can prevent the air bag 3 from shifting.

[0061] For example, in other embodiments of the present application, the positioning portions 25 can also be arranged as positioning columns, each of which is arranged on opposite sides of the mounting surface 23, and the cooperating portions 31 are arranged as cooperating columns, each of which is arranged on opposite sides of the outer surface of the air bag 3 along the vertical direction, each of which extends horizontally, and the outer surface of each positioning column abuts against the outer surface of each cooperating column to position the installation angle of the air bag 3, so that the air bag 3 is installed at the correct angle and does not shift in angle during operation.

[0062] The application provides an automobile suspension structure (not shown), which comprises an axle, four rear air springs, four air bag connecting structures 100 and four shock absorbers, each of the rear air springs, the air bag connecting structures 100 and the shock absorbers is installed at the upper end of the axle and is used for being fixedly connected with a vehicle frame, the four rear air springs are correspondingly arranged with four tires, each of the air bag connecting structures 100 is located at the side of each of the rear air springs away from each of the tires, and each of the shock absorbers is located between each of the rear air springs and each of the air bag connecting structures 100, and the specific structure of the air bag connecting structure 100 is refered to the above embodiment. The air bag connecting structure 100 is newly added at the side of the rear air spring, and the force transmission capacity of the automobile suspension structure is increased. Meanwhile, the air bag connecting structure 100 is communicated with the air pipe of the rear air spring, can directly use the control mode of the rear air spring, and does not have new influence on the air pressure control system.

[0063] In addition, the application further provides an automobile (not shown) comprising the automobile suspension structure. It can be understood that the specific structure of the automobile is refered to the above embodiment, and since the automobile adopts all the technical solutions of the above embodiment, the automobile also has the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0064] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields within the concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. An airbag connecting structure characterized by comprising: The utility model relates to a connecting structure of air spring, including: Cover plate for installing to the junction of axle and frame between rear air spring, Support, the support is arranged in the upper end of the cover plate, Air bag, the air bag is equipped in the upper end of the support, the air bag has the activity stroke of elongation or contraction in up and down direction, and, Supporting structure, the supporting structure is equipped between the cover plate and the support, can deliver the force of the cover plate to the support along up and down direction, The supporting structure includes: Two force transmission surfaces, two the force transmission surfaces are equipped in the lower end of the support, and opposite setting is in both sides of the air bag, And, Two matching surfaces are correspondingly arranged with two the force transmission surfaces and are equipped in the upper end of the cover plate, and two the matching surfaces are respectively with two the force transmission surfaces abut, The first boss and the second boss of the end surface of the cover plate along the lateral direction are equipped with interval, the first boss and the second boss are along the lateral direction extension setting, Two the matching surfaces are respectively equipped in the upper end of the first boss and the second boss along the lateral direction one side, The lower end surface of the support is equipped with the convex part, the convex part is located in the longitudinal one side of the support, the convex part extends downward to be connected with the cover plate fixedly.

2. The air bag connection structure according to claim 1, wherein The cover plate is also equipped with the third boss, the third boss is located on the end surface of the cover plate along the lateral direction, the third boss is arranged on the side of the second boss away from the first boss, the third boss and the second boss along the lateral direction end surface is equipped with fixed hole respectively, The convex part along the lateral direction end surface is provided with two matching holes, and two the matching holes and two the fixed hole are correspondingly arranged, two matching holes and two fixed holes are connected by bolt, to connect the support and the cover plate.

3. The air bag connection structure according to claim 1, wherein The convex part along the lateral direction both ends protrude and are equipped with two support plates, the upper end of two the support plates and the lower end of the support are fixedly connected, each the support plate is inclinedly arranged from top to bottom to the direction close to the convex part.

4. The air bag connection structure according to claim 1, wherein The upper end of the support is also equipped with the mounting surface, the mounting surface is attached with the lower end surface of the air bag, the center position of the mounting surface is provided with a through hole, the through hole avoids the convex part setting, The air bag connecting structure also includes a fixed screw and a locking nut that cooperate with each other, the upper end of the fixed screw is fixedly connected with the center position of the lower end surface of the air bag, the lower end of the fixed screw passes through the through hole, and the locking nut is fixed to the part of the fixed screw that passes out of the through hole to tightly fix the air bag on the support.

5. The air bag connection structure according to claim 4, wherein The upper end of the support is also equipped with two positioning parts, two the positioning parts are arranged on the opposite sides of the mounting surface, The lower end of the air bag is also equipped with two matching parts, two the matching parts and two the positioning parts are correspondingly arranged, and two the matching parts and two the positioning parts are fixedly connected, to fix the installation angle of the air bag.

6. An automobile suspension structure characterized by comprising: The utility model relates to a connecting structure of air spring, including: Axle, for being connected with frame, Four rear air springs, install in the upper end of axle, for being fixedly connected with frame, and four the rear air springs are used for corresponding arrangement with four tires, Four air bag connecting structures are installed at the upper end of the axle and used to be fixedly connected with the vehicle frame. Each air bag connecting structure is arranged at the side of each rear air spring away from the tire. Each air bag connecting structure is the air bag connecting structure according to any one of claims 1 to 5. And, Four shock absorbers are installed at the upper end of the axle and used to be fixedly connected with the vehicle frame. Each shock absorber is arranged between each rear air spring and each air bag connecting structure.

7. An automobile characterized by comprising: The automobile suspension structure according to claim 6 is included.

Citation Information

Patent Citations

  • Passenger car, front axle of passenger car and air bag support of front axle

    CN211869096U