Air suspension structure and vehicle with same

Abstract

The utility model discloses an air suspension structure and a vehicle with the air suspension structure. The air suspension structure comprises a control arm and an air spring. A first matching groove is formed in the control arm, a first limiting groove is formed in the bottom wall of the first matching groove, a boss is arranged on the inner wall of the first limiting groove, and the boss extends towards the center of the first limiting groove. The air spring comprises a lower mounting seat, a spring part and an upper mounting seat, the lower mounting seat is matched in the first matching groove, and the upper mounting seat is suitable for being connected with a frame. A first limiting column is arranged on the side, close to the control arm, of the lower installation base, a groove is formed in the peripheral face of the first limiting column, the first limiting column is in running fit with the first limiting groove, and at least part of the boss is arranged in the groove in a matched mode. According to the air suspension structure, the local stress capacity of the first limiting column is improved, the service life of the first limiting column is prolonged, the matching between the air spring and the control arm is firmer, and the assembly efficiency of a whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an air suspension structure and a vehicle with the same. Background Art

[0002] With the continuous development of automobile technology, the trend of applying air suspension systems to vehicles has increased year by year, and the application of air springs has become more and more common. In the prior art, the installation and matching of air springs and control arms usually adopts a positioning pin plus a clamping structure, in which the outer end face of the clamping structure is designed to be an angle, the inner side of the clamping structure is a barb structure, and the clamping claw and the control arm mounting surface are designed with an interference of 2mm. During the assembly process, the clamping claw is deformed and squeezed into the control arm mounting seat by external force. After the assembly is in place, the barb structure can be used to limit the position and prevent the air spring from moving in the Z direction. However, the interference design causes stress concentration at the root of the clamping claw during assembly, which makes the clamping claw prone to breakage, causing the product to be scrapped and affecting the assembly efficiency of the entire vehicle. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an air suspension structure, which improves the local force bearing capacity of the first limit column, prolongs the service life of the first limit column, makes the cooperation between the air spring and the control arm more reliable, and improves the assembly efficiency of the whole vehicle.

[0004] Another object of the utility model is to provide a vehicle adopting the above-mentioned air suspension structure.

[0005] According to the air suspension structure of the first embodiment of the utility model, it includes: a control arm, a first matching groove is formed on the control arm, a first limiting groove is formed on the bottom wall of the first matching groove, a boss is provided on the inner wall of the first limiting groove, and the boss extends toward the center of the first limiting groove; an air spring, the air spring includes a lower mounting seat, a spring part and an upper mounting seat, the spring part is connected between the lower mounting seat and the upper mounting seat, the lower mounting seat is fitted in the first matching groove, and the upper mounting seat is suitable for being connected to a vehicle frame; wherein, a first limiting column is provided on a side of the lower mounting seat adjacent to the control arm, a groove is formed on the outer peripheral surface of the first limiting column, the first limiting column can rotate along the first limiting groove, and at least part of the boss is fitted in the groove.

[0006] According to the air suspension structure of the embodiment of the utility model, a groove is provided on the first limit column, and a boss is provided on the first limit groove, so that the boss cooperates with the groove. Therefore, compared with the traditional air suspension structure, the local force bearing capacity of the first limit column is improved, the service life of the first limit column is extended, the cooperation between the air spring and the control arm is more reliable, and the assembly efficiency of the whole vehicle is improved.

[0007] According to some embodiments of the present utility model, the first limiting groove is a long strip groove, the boss is arranged on one side of the length direction of the first limiting groove, and the boss is interference fit with the groove.

[0008] According to some embodiments of the present invention, the interference between the boss and the groove is D, wherein D satisfies: 0.1 mm≤D≤0.3 mm.

[0009] According to some embodiments of the utility model, a second limiting groove is formed on the bottom wall of the first matching groove, a second limiting column is provided on the side of the lower mounting seat adjacent to the control arm, the second limiting column can rotate along the second limiting groove, and there are multiple first limiting grooves and multiple second limiting grooves, and the multiple first limiting grooves and the multiple second limiting grooves are arranged alternately along the circumference of the bottom wall of the first matching groove.

[0010] According to some embodiments of the present invention, there are multiple second limiting columns and multiple first limiting columns, and the multiple first limiting columns and the multiple second limiting columns are staggeredly arranged along the circumference of the lower mounting seat.

[0011] According to some embodiments of the utility model, a second mating groove is formed on a side of the lower mounting seat adjacent to the control arm, and the first limiting column and the second limiting column are located on the outer periphery of the second mating groove; a protrusion is provided on a side of the control arm adjacent to the lower mounting seat, and the protrusion is interference fit with the second mating groove.

[0012] According to some embodiments of the present invention, a portion of the surface of the control arm protrudes toward the lower mounting seat to form the protrusion.

[0013] According to some embodiments of the present invention, a plurality of reinforcing ribs are provided on a side of the control arm away from the lower mounting seat, and the plurality of reinforcing ribs are spaced apart radially along the lower mounting seat.

[0014] The vehicle according to the embodiment of the second aspect of the utility model comprises the air suspension structure described in the embodiment of the first aspect of the utility model.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1is a schematic diagram of an air suspension structure according to an embodiment of the utility model, wherein a spring portion and an upper mounting seat are not shown;

[0018] Figure 2 is a schematic diagram of an unassembled air suspension structure according to an embodiment of the utility model;

[0019] Figure 3 is a schematic diagram of an air suspension structure according to an embodiment of the utility model after assembly;

[0020] Figure 4 is a schematic diagram of an air spring according to an embodiment of the utility model;

[0021] Figure 5 is a schematic diagram of a control arm according to an embodiment of the utility model;

[0022] Figure 6 is a cross-sectional view of an assembled air suspension structure according to an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of an air suspension structure according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100. Air suspension structure;

[0026] 1. control arm; 11. first matching groove; 111. first limiting groove; 1111. boss; 112. second limiting groove; 12. protrusion; 13. reinforcing rib; 2. air spring; 21. lower mounting seat; 211. first limiting column; 2111. groove; 212. second limiting column; 213. second matching groove; 22. spring part; 23. upper mounting seat. DETAILED DESCRIPTION

[0027] Reference below Figure 1-Figure 7 An air suspension structure 100 according to an embodiment of the first aspect of the present invention is described.

[0028] like Figure 1-Figure 7 As shown, the air suspension structure 100 according to the first embodiment of the utility model includes a control arm 1 and an air spring 2 .

[0029] Specifically, a first matching groove 11 is formed on the control arm 1, a first limiting groove 111 is formed on the bottom wall of the first matching groove 11, a boss 1111 is provided on the inner wall of the first limiting groove 111, and the boss 1111 extends toward the center of the first limiting groove 111. The air spring 2 includes a lower mounting seat 21, a spring portion 22 and an upper mounting seat 23, the spring portion 22 is connected between the lower mounting seat 21 and the upper mounting seat 23, the lower mounting seat 21 is fitted in the first matching groove 11, and the upper mounting seat 23 is suitable for connecting to the vehicle frame. Among them, a first limiting column 211 is provided on one side of the lower mounting seat 21 adjacent to the control arm 1, a groove 2111 is formed on the outer peripheral surface of the first limiting column 211, the first limiting column 211 can rotate along the first limiting groove 111, and at least part of the boss 1111 is fitted in the groove 2111.

[0030] For example, in Figure 1-Figure 7 In the example, the first matching groove 11 is located in the middle of the control arm 1, and the first limiting groove 111 passes through the bottom wall of the first matching groove 11. A boss 1111 is provided on one side of the length direction of the first limiting groove 111, and the boss 1111 protrudes from the inner wall of the first limiting groove 111 toward the center of the first limiting groove 111. In the thickness direction of the control arm 1 (for example, Figure 1 In the vertical direction of the first limit groove 111, the boss 1111 is located in the middle of the inner wall of the first limit groove 111, and the boss 1111 extends along the circumferential direction of the inner wall of the first limit groove 111. The lower mounting seat 21, the spring portion 22 and the upper mounting seat 23 of the air spring 2 are arranged along the thickness direction of the control arm 1. The lower mounting seat 21 is installed in the first matching groove 11, and the first limiting column 211 extends from the side of the lower mounting seat 21 adjacent to the control arm 1 toward the direction away from the lower mounting seat 21. The shape of the first limiting column 211 is cylindrical. The groove 2111 is formed by the outer peripheral surface of one side of the radial direction of the first limiting column 211. When the lower mounting seat 21 is matched with the first matching groove 11, the first limiting column 211 is inserted into the first limiting groove 111 so that the first limiting column 211 is matched with the first limiting groove 111, and then the air spring 2 is rotated so that the groove 2111 can be matched with the boss 1111.

[0031] Specifically, when installing the air spring 2 and the control arm 1, first place the air spring 2 on the first matching groove 11 in the direction indicated by the arrow, and make the first limiting column 211 cooperate with the first limiting groove 111, and then rotate the air spring 2 in the rotation direction so that the groove 2111 of the first limiting column 211 cooperates with the boss 1111. After the groove 2111 cooperates with the boss 1111, the air spring 2 cannot continue to rotate, and at the same time, the displacement of the air spring 2 in the thickness direction of the control arm 1 is also limited, so that the air spring 2 and the control arm 1 are assembled.

[0032] Compared with the prior art, the force-bearing area of ​​the first limit column 211 is increased by about 3.8 times, which improves the local force-bearing capacity of the first limit column 211, prevents the first limit column 211 from breaking due to excessive force at the matching point between the groove 2111 and the boss 1111 or low ambient temperature, and prolongs the service life of the first limit column 211. At the same time, the boss 1111 also limits the displacement of the first limit column 211 in the thickness direction of the control arm 1, enhances the matching strength between the air spring 2 and the first matching groove 11, and further limits the displacement of the air spring 2 in the thickness direction of the control arm 1, making the connection between the air spring 2 and the control arm 1 more secure, and improving the safety during driving.

[0033] As a result, the fit between the air spring 2 and the control arm 1 is made more secure, the displacement of the air spring 2 in the thickness direction of the control arm 1 is limited, the interaction force between the boss 1111 and the groove 2111 in the thickness direction of the control arm 1 is reduced, the first limit column 211 is prevented from breaking, the service life of the air spring 2 is extended, and the assembly efficiency of the whole vehicle is improved.

[0034] According to the air suspension structure 100 of the embodiment of the utility model, by providing a groove 2111 on the first limiting column 211, and providing a boss 1111 on the first limiting groove 111, the boss 1111 is matched with the groove 2111. Therefore, compared with the traditional air suspension structure, the local force bearing capacity of the first limiting column 211 is improved, the service life of the first limiting column 211 is extended, the air spring 2 and the control arm 1 are more firmly matched, and the assembly efficiency of the whole vehicle is improved.

[0035] According to some embodiments of the present invention, the first limiting groove 111 is a long strip groove, the boss 1111 is arranged on one side of the length direction of the first limiting groove 111, and the boss 1111 is interference fit with the groove 2111. Figure 2 , Figure 3 , Figure 5 and Figure 6 The first limiting groove 111 extends along the arc of the first matching groove 11, and the boss 1111 is located at one end of the length direction of the first limiting groove 111. When the first limiting column 211 is matched with the first limiting groove 111, the first limiting column 211 can slide along the first limiting groove 111, so that the boss 1111 is matched with the groove 2111. The interference fit between the boss 1111 and the groove 2111 can ensure that the boss 1111 and the groove 2111 are more closely matched, prevent the first limiting column 211 from falling off the boss 1111, and ensure that the first limiting column 211 and the first limiting groove 111 are firmly matched.

[0036] Furthermore, the interference between the boss 1111 and the groove 2111 is D, where D satisfies: 0.1 mm ≤ D ≤ 0.3 mm. Figure 2, Figure 3 and Figure 5 As shown, when the interference between the boss 1111 and the groove 2111 is less than 0.1 mm, the interference between the boss 1111 and the groove 2111 is too small. When the groove 2111 and the boss 1111 are matched, the boss 1111 and the groove 2111 are easy to fall off, which is not conducive to the match between the first limiting column 211 and the first limiting groove 111. When the interference between the boss 1111 and the groove 2111 is greater than 0.3 mm, the interference between the boss 1111 and the groove 2111 is too large. When the air spring 2 is rotated, it is difficult for the boss 1111 to enter the groove 2111. The operator needs to use a large force when rotating, which increases the difficulty of assembly and is not conducive to the installation of the air spring 2 on the control arm 1.

[0037] Therefore, by ensuring that the interference fit between the boss 1111 and the groove 2111 satisfies: 0.1mm≤D≤0.3mm, it is possible to ensure that the boss 1111 and the groove 2111 fit securely, and that the first limiting column 211 and the first limiting groove 111 fit tightly, thereby preventing the first limiting column 211 from falling off the first limiting groove 111, thereby improving the firmness of the fit between the control arm 1 and the air spring 2, reducing the difficulty of operation, and improving assembly efficiency.

[0038] According to some embodiments of the utility model, the bottom wall of the first matching groove 11 is formed with a second limiting groove 112, and a second limiting column 212 is provided on a side of the lower mounting seat 21 adjacent to the control arm 1, and the second limiting column 212 can rotate along the second limiting groove 112. There are multiple first limiting grooves 111 and multiple second limiting grooves 112, and the multiple first limiting grooves 111 and the multiple second limiting grooves 112 are staggered along the circumferential direction of the bottom wall of the first matching groove. For example, in Figure 1-Figure 2 , Figure 3 and Figure 5 In the example, the second limiting groove 112 is adjacent to the first limiting groove 111. The second limiting post 212 is adjacent to the first limiting post 211. The second limiting post 212 is opposite to the second limiting groove 112, and when the lower mounting seat 21 is matched with the first matching groove 11, the second limiting post 212 is matched with the second limiting groove 112. In this way, the connection between the lower mounting seat 21 and the first matching groove 11 can be strengthened, the air spring 2 can be prevented from falling off the control arm 1, the matching strength between the air spring 2 and the control arm 1 can be improved, and the stability of the connection between the air spring 2 and the control arm 1 during driving can be ensured.

[0039] There are two first limiting grooves 111 and two second limiting grooves 112. The two first limiting grooves 111 and the two second limiting grooves 112 form a circle on the bottom wall of the first matching groove 11 and are arranged at intervals along the arc of the circle.

[0040] Furthermore, the second limiting posts 212 and the first limiting posts 211 are both multiple, and in the description of the present utility model, "multiple" means two or more. The multiple first limiting posts 211 and the multiple second limiting posts 212 are arranged alternately along the circumference of the lower mounting seat 21. Figure 1-Figure 5 The number of the first limiting columns 211 may be 2, and the number of the second limiting columns 212 may also be 2. The two first limiting columns 211 and the two second limiting columns 212 are arranged at intervals along the circumferential direction of the lower mounting seat 21, and the two first limiting columns 211 are respectively located on both sides of the radial direction of the lower mounting seat 21, and the two second limiting columns 212 are respectively located on both sides of the radial direction of the lower mounting seat 21.

[0041] With such a configuration, when the first limiting column 211 cooperates with the first limiting groove 111, the interference fit between the boss 1111 and the groove 2111 ensures a secure fit between the first limiting column 211 and the first limiting groove 111, thereby preventing the first limiting column 211 from falling off from the first limiting groove 111. The second limiting column 212 cooperates with the second limiting groove 112, thereby further enhancing the fit between the air spring 2 and the control arm 1. Thus, the reliability of the fit between the air spring 2 and the control arm 1 is ensured, which is beneficial to improving the stability and safety during driving.

[0042] According to some embodiments of the present invention, a second matching groove 213 is formed on one side of the lower mounting seat 21 adjacent to the control arm 1, and the first limiting column 211 and the second limiting column 212 are located on the periphery of the second matching groove 213. A protrusion 12 is provided on one side of the control arm 1 adjacent to the lower mounting seat 21, and the protrusion 12 is interference-fitted with the second matching groove 213. Figure 2 , Figure 3 and Figure 5 As shown, the second matching groove 213 is located at the center of the lower mounting seat 21. The first limiting column 211 and the second limiting column 212 are arranged at intervals along the circumference of the second matching groove 213. The protrusion 12 is located in the middle of the first matching groove 11, and the protrusion 12 is formed by the middle of the first matching groove 11 protruding toward the direction adjacent to the air spring 2. When the lower mounting seat 21 is matched with the first matching groove 11, the second matching groove 213 can be interference-fitted with the protrusion 12, thereby preventing the protrusion 12 from escaping from the second matching groove 213, thereby enhancing the matching strength between the lower mounting seat 21 and the control arm 1.

[0043] According to some embodiments of the present invention, a portion of the surface of the control arm 1 protrudes toward the lower mounting seat 21 to form a protrusion 12. Figure 2 , Figure 3 and Figure 5In the example, the protrusion 12 is located at the center of the control arm 1. The surface of the control arm 1 protrudes and extends in a direction away from the control arm 1 to form the protrusion 12, thereby making the protrusion 12 and the second matching groove 213 opposite to each other, so that the second matching groove 213 and the protrusion 12 can match, thereby enhancing the reliability of the matching between the air spring 2 and the control arm 1.

[0044] According to some embodiments of the present invention, a plurality of reinforcing ribs 13 are provided on a side of the control arm 1 away from the lower mounting seat 21, and the plurality of reinforcing ribs 13 are spaced apart along the radial direction of the lower mounting seat 21. Figure 2 and Figure 3 The number of the reinforcing ribs 13 is 2, and both of the two reinforcing ribs 13 extend along the radial direction of the control arm 1, and the two reinforcing ribs 13 are respectively located on both sides of the radial direction of the protrusion 12. By providing the reinforcing ribs 13, the structural strength of the control arm 1 can be strengthened, so that after the control arm 1 is matched with the air spring 2, the load-bearing capacity of the control arm 1 is enhanced, and the reliability of the control arm 1 during driving can be guaranteed, thereby improving driving safety.

[0045] A vehicle (not shown) according to an embodiment of the second aspect of the utility model comprises the air suspension structure 100 of the embodiment of the first aspect of the utility model.

[0046] According to the vehicle of the embodiment of the utility model, by adopting the above-mentioned air suspension structure 100, the structural strength and structural stability of the air suspension structure 100 are enhanced, the assembly efficiency of the whole vehicle is improved, and the driving safety is ensured.

[0047] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0048] In the description of the present invention, it is necessary to understand that the terms "center", "length", "width", "thickness", "up", "down", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air suspension structure, characterized in that: include: A control arm, wherein a first matching groove is formed on the control arm, a first limiting groove is formed on the bottom wall of the first matching groove, a boss is provided on the inner wall of the first limiting groove, and the boss extends toward the center of the first limiting groove; An air spring, the air spring comprising a lower mounting seat, a spring portion and an upper mounting seat, the spring portion being connected between the lower mounting seat and the upper mounting seat, the lower mounting seat being fitted in the first fitting groove, and the upper mounting seat being suitable for being connected to a vehicle frame; A first limiting column is provided on one side of the lower mounting seat adjacent to the control arm, a groove is formed on the outer peripheral surface of the first limiting column, the first limiting column can rotate along the first limiting groove, and at least part of the boss is fitted in the groove.

2. The air suspension structure according to claim 1, characterized in that: The first limiting groove is a long strip groove, the boss is arranged on one side of the length direction of the first limiting groove, and the boss is interference fit with the groove.

3. The air suspension structure according to claim 2, characterized in that: The interference between the boss and the groove is D, wherein D satisfies: 0.1 mm≤D≤0.3 mm.

4. The air suspension structure according to claim 1, characterized in that: A second limiting groove is formed on the bottom wall of the first matching groove, and a second limiting column is provided on the side of the lower mounting seat adjacent to the control arm, and the second limiting column can rotate along the second limiting groove. There are multiple first limiting grooves and multiple second limiting grooves, and the multiple first limiting grooves and the multiple second limiting grooves are arranged alternately along the circumference of the bottom wall of the first matching groove.

5. The air suspension structure according to claim 4, characterized in that: There are a plurality of the second limiting columns and a plurality of the first limiting columns, and the plurality of the first limiting columns and the plurality of the second limiting columns are arranged alternately along the circumferential direction of the lower mounting seat.

6. The air suspension structure according to claim 4, characterized in that: A second matching groove is formed on one side of the lower mounting seat adjacent to the control arm, and the first limiting column and the second limiting column are located at the outer periphery of the second matching groove; A protrusion is provided on one side of the control arm adjacent to the lower mounting seat, and the protrusion is interference-fitted with the second matching groove.

7. The air suspension structure according to claim 6, characterized in that: A portion of the surface of the control arm protrudes toward the lower mounting seat to form the protrusion.

8. The air suspension structure according to any one of claims 1 to 7, characterized in that: A plurality of reinforcing ribs are provided on a side of the control arm away from the lower mounting seat, and the plurality of reinforcing ribs are spaced apart in a radial direction of the lower mounting seat.

9. A vehicle, characterized in that: The invention comprises the air suspension structure as described in any one of claims 1 to 8.

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