CN118306158A - Air suspension system - Google Patents

Abstract

The application relates to an air suspension system, which comprises two support frames, two large support frames and a stabilizer bar, wherein each support frame is provided with an air spring and a shock absorber; the stabilizer bar comprises a torsion bar and two guide arms, the torsion bar is provided with a first end and a second end, and the first end and the second end are respectively and rotatably connected with a large bracket; the first end and the second end are respectively provided with a long round structure, one ends of the two guide arms are respectively provided with a long round hole, the two guide arms are respectively clamped with the corresponding long round structures through the long round holes, and the other ends of the two guide arms are respectively connected with a supporting frame through a connecting structure; through set up long circular structure and set up long round hole respectively in the one end of two guide arms at the relative both ends that set up of torsion bar, two guide arms are through long round hole and the long circular structure joint that corresponds respectively, can simplify the technology, cancel welding process, can avoid welding stress to cause cracked risk to can reduce system cost.

Description

Air suspension system

Technical Field

The application relates to the technical field of vehicle suspensions, in particular to an air suspension system.

Background

The air suspension is a suspension structure which is connected through an air bag, damps and controls the height, is usually arranged at the joint of a frame and a rear axle, plays a role in transmitting force and moment between the frame and the vehicle body, and has a damping effect which is more stable and mild than that of a leaf spring suspension.

The guide arm of the stabilizer bar is used as a guide element for controlling the motion track of the axle and is widely applied to various air suspensions; the torsion bar of the stabilizer bar serves as an anti-roll element to provide roll stabilization moment for the suspension system, and is widely used in various suspension systems.

In the related art, the guide arm and the torsion bar are generally fastened by welding, but in the above-mentioned manner, there is a general problem that the welding position is cracked due to insufficient welding strength.

Disclosure of Invention

Based on this, it is necessary to provide an air suspension system that can simplify the process, cancel the welding process, avoid the risk of breakage due to welding stress, and thus reduce the system cost.

An air suspension system comprises two support frames, two large supports and a stabilizer bar, wherein an air spring and a shock absorber are arranged on each support frame;

the stabilizer bar comprises a twisting bar and two guide arms, the twisting bar is provided with a first end and a second end which are oppositely arranged, and the first end and the second end are respectively and rotatably connected with the large bracket;

The first end and the second end are respectively provided with a long round structure, two long round holes are respectively formed in one ends of the guide arms, the guide arms are respectively connected with the corresponding long round structures in a clamping mode through the long round holes, and the other ends of the guide arms are respectively connected with one supporting frame through a connecting structure.

In the scheme, the two ends of the torsion rod, which are oppositely arranged, are provided with the oblong structures, and the one ends of the two guide arms are respectively provided with the oblong holes, and the two guide arms are respectively clamped with the corresponding oblong structures through the oblong holes, so that the process can be simplified, the welding process is cancelled, the risk of fracture caused by welding stress can be avoided, and the system cost can be reduced; the longitudinal force between the large support and the rear axle is transmitted through the guide arm, the movement relation of the vertical jumping of the rear axle during running is met, meanwhile, the vertical jumping of the rear axle in the front-rear direction of the whole vehicle is kept very small, the transverse force between the large support and the rear axle, namely the rolling force, is transmitted through the torsion bar, the movement relation of the rolling of the rear axle during running is met, the rolling trend of the large support is reduced, the displacement of the large support in the transverse direction of the whole vehicle is kept very small, and meanwhile, the stabilizer bar can realize guiding.

The air spring bears the vertical load of the whole vehicle and the impact load of the buffer pavement, and plays roles of bearing and damping; the shock absorber is used for damping the vibration of the road surface; the stabilizer bar adopts hollow structure, and the rigidity of heeling is great, is greater than solid stabilizer bar far away, can improve the stability of heeling, and under the unchangeable circumstances of anti-roll effect of assurance, has reduced overall weight to a certain extent, plays the effect of lightweight.

In one embodiment, the stabilizer bar further comprises a connecting snap ring, the connecting snap ring is provided with an inner ring and an outer ring, and the connecting snap ring is in interference fit with the torsion bar through the inner ring; the long round structure is formed on the outer ring of the connecting clamping ring.

The connecting clamping ring is in interference fit with the torsion bar through the inner ring, so that the position of the connecting clamping ring and the position of the torsion bar can be fixed.

In one embodiment, the air suspension system further comprises a cross beam and a frame, the cross beam and the two large brackets are arranged on the frame, the cross beam and the extension direction of the torsion bar are parallel to each other, and the two large brackets, the cross beam and the torsion bar are enclosed together to form a quadrilateral structure.

In one embodiment, the air suspension system further comprises a top reaction bar, one end of the top reaction bar is connected to the cross beam, and the other end of the top reaction bar is used for being connected with the rear axle through a connecting bracket.

The upper reaction rod and the guide arm play a role in guiding together, and the stabilizer rod can play a role in guiding and anti-rolling simultaneously, so that the integral integration can be improved, the lower reaction rod is eliminated, and the number of parts is reduced.

In one embodiment, the torsion bar is mounted on one side of the large bracket, and the extending direction of the large bracket is perpendicular to the extending direction of the torsion bar.

Through setting the extending direction of big support and the extending direction of torsion bar to mutually perpendicular, and torsion bar installs in one side of big support, can reduce whole height, improves the clearance from the ground, can effectively solve the problem that low saddle motorcycle type was arranged difficultly.

In one embodiment, a mounting groove is formed in one side of the large support, a first bushing and a bearing cover are arranged on the torsion bar, the first bushing is sleeved on the torsion bar, the torsion bar is mounted in the mounting groove through the first bushing, and the bearing cover is covered on the outer side of the first bushing and connected to the large support so as to fix the positions of the first bushing and the torsion bar on one side of the large support.

In one embodiment, the connecting structure comprises a second bushing and a mandrel, the second bushing is arranged at the other end of the guide arm, the second bushing is sleeved on the mandrel, and the mandrel is connected with the supporting frame.

The second bushing is a sliding bushing, when the guide arm rotates to a certain angle, the sliding inside the second bushing can be realized, the whole lifting or descending stroke can be increased, and the problem that the conventional vulcanized rubber bushing is high in torsional rigidity and cannot meet the requirement in the whole lifting or descending stroke can be effectively avoided.

In one embodiment, the support frame includes a support portion and two bending portions, the two bending portions are respectively disposed at two ends of the support portion, where the two opposite ends of the support portion are disposed, and the two bending portions are respectively provided with an air spring.

In one embodiment, the other end of the guide arm is connected with a connecting structure, and the connecting structure is connected with the supporting frame; the support part is provided with a first mounting hole for mounting the shock absorber, a second mounting hole for being connected with a rear axle and a third mounting hole for mounting the connecting structure.

Through setting up first mounting hole in supporting part, can effectively avoid the trompil at the support frame position of bearing, reduce stress concentration, improve the reliability.

In one embodiment, the support portion is further provided with a positioning pin, the positioning pin is used for positioning the rear axle, and the positioning pin adopts a spring pin.

By adopting the spring pin, the spring pin is not easy to fall off, and the assembly convenience can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a stabilizer bar according to an embodiment of the present application.

Fig. 2 is an exploded view of a stabilizer bar according to an embodiment of the present application.

Fig. 3 is a schematic exploded view of a stabilizer bar according to another embodiment of the present application.

Fig. 4 is a schematic diagram showing a connection structure of a stabilizer bar and a large bracket according to an embodiment of the present application.

Fig. 5 is an exploded view of a stabilizer bar and a large bracket according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a supporting frame according to an embodiment of the application.

Fig. 7 is a schematic structural diagram of an air suspension system according to an embodiment of the present application at a first view angle.

Fig. 8 is a schematic structural diagram of an air suspension system according to an embodiment of the present application at a second view angle.

Description of the reference numerals

10. An air suspension system; 100. a support frame; 110. a support part; 120. a bending part; 130. a first mounting hole; 140. a second mounting hole; 150. a third mounting hole; 160. a positioning pin; 200. a large bracket; 210. a mounting groove; 220. a bearing cap; 230. a fastening screw; 240. a first connection hole; 250. a second connection hole; 300. a stabilizer bar; 310. a twist lever; 320. a guide arm; 330. an oblong structure; 340. a slotted hole; 350. a connection structure; 351. a second bushing; 352. a mandrel; 360. connecting a clamping ring; 370. a fourth mounting hole; 400. an air spring; 500. a damper; 600. a cross beam; 700. a frame; 800. a reaction rod; 900. and (5) connecting the brackets.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1, 7 and 8, an air suspension system 10 according to an embodiment of the present application includes two support frames 100, two large support frames 200 and a stabilizer 300, wherein each support frame 100 is provided with an air spring 400 and a shock absorber 500. The stabilizer bar 300 is connected to the supporter 100 and the large supporter 200. The support frame 100 is for connection to a rear axle.

Each supporting frame 100 is provided with two air springs 400, and the air springs 400 bear the vertical load of the whole vehicle and the impact load of a buffer pavement, so as to play a role in bearing and damping; the shock absorber 500 serves to attenuate vibration of a road surface.

Referring to fig. 1,2, 7 and 8, the stabilizer 300 includes a torsion bar 310 and two guide arms 320, wherein the torsion bar 310 has a first end and a second end opposite to each other, and the first end and the second end are rotatably connected to the large bracket 200 respectively. The first end and the second end are both formed with oblong structures 330, one ends of the two guide arms 320 are both provided with oblong holes 340, the two guide arms 320 are respectively clamped with the corresponding oblong structures 330 through the oblong holes 340, and the other ends of the two guide arms 320 are connected with the support frame 100 through connecting structures 350.

The extending direction of the torsion bar 310 is perpendicular to the extending direction of the guide arm 320. It should be noted that: when the large bracket 200 deflects or the rear axle jumps, the torsion bar 310 can rotate along with the movement of the large bracket 200 and drive the guide arm 320 to move. The torsion bar 310 may transmit lateral force and the guide arm 320 may transmit longitudinal force (driving force, braking force, etc.).

The longitudinal force between the large bracket 200 and the rear axle is transferred through the guide arm 320, the movement relation of the up-and-down runout of the rear axle during running is met, meanwhile, the displacement of the up-and-down runout of the rear axle in the front-and-rear direction of the whole vehicle is kept small, the transverse force between the large bracket 200 and the rear axle, namely the rolling force, is transferred through the torsion bar 310, the movement relation of the rolling during running of the rear axle is met, meanwhile, the rolling trend of the large bracket 200 is reduced, the displacement of the large bracket 200 in the transverse direction of the whole vehicle is kept small, and meanwhile, the stabilizer bar 300 can realize guiding.

The stabilizer bar 300 adopts a hollow structure, has larger roll stiffness, is far greater than that of the solid stabilizer bar 300, can improve roll stability, reduces overall weight to a certain extent under the condition of ensuring the unchanged anti-roll effect, and plays a role of light weight.

Through set up long circular structure 330 and offered slotted hole 340 respectively in the one end of two guide arms 320 at the both ends that torsion bar 310 set up relatively, two guide arms 320 can simplify the technology through long circular hole 340 and the long circular structure 330 joint that corresponds respectively, cancel welding process, can avoid welding stress to cause cracked risk, thereby can reduce system cost, and through adopting long circular structure 330 and slotted hole 340 matched with connected mode, can effectively avoid guide arm 320 to take place the dislocation with torsion bar 310 in the motion process, can improve anti roll function.

An air suspension system 10 according to an embodiment of the present application is described in detail below with reference to the accompanying drawings.

Referring to fig. 1,2 and 3, in some embodiments of the present application, optionally, in one embodiment, the stabilizer bar 300 further includes a connection snap ring 360, the connection snap ring 360 has an inner ring and an outer ring, and the connection snap ring 360 is in interference fit with the torsion bar 310 through the inner ring; the oblong structure 330 is formed on the outer ring of the attachment collar 360. Specifically, the inner ring has a circular structure.

The connection snap ring 360 is in interference fit with the torsion bar 310 through the inner ring, so that the connection snap ring 360 and the torsion bar 310 can be fixed in position.

In another embodiment, the oblong structure 330 is formed at the first end and the second end of the torsion bar 310, and the oblong structure 330 and the torsion bar 310 are integrally formed.

Referring to fig. 1, 2, 3 and 7, according to some embodiments of the present application, the air suspension system 10 further includes a cross beam 600 and a frame 700, wherein the cross beam 600 and the two large brackets 200 are disposed on the frame 700, the extending directions of the cross beam 600 and the torsion bar 310 are parallel to each other, and the two large brackets 200, the cross beam 600 and the torsion bar 310 are enclosed together to form a quadrilateral structure. The two large brackets 200 are arranged on the cross beam 600 at intervals.

The two large brackets 200 are fixedly connected to the frame 700, and when the frame 700 deflects, the two large brackets 200 can be driven to deflect. Specifically, the quadrilateral structure formed by the two large brackets 200, the cross beam 600 and the torsion bar 310 is closed, and the closed quadrilateral structure can greatly reduce the stress of the stabilizer bar 300, so that the stress of the frame 700 is also reduced, the strength and the rigidity of the two large brackets 200 and the frame 700 are improved, and the local torsional rigidity of the frame 700 can be improved, thereby improving the reliability of the vehicle.

Air spring 400 and shock absorber 500 are both disposed on frame 700. Specifically, the lower ends of the air spring 400 and the damper 500 are provided to the support frame 100, and the support frame 100 can support the air spring 400 and the damper 500. The upper ends of the air spring 400 and the damper 500 are provided on the vehicle frame 700. More specifically, the upper end of shock absorber 500 is disposed on one side of frame 700.

Referring to fig. 1,2,3 and 7, according to some embodiments of the present application, the air suspension system 10 further includes an upper reaction bar 800, one end of the upper reaction bar 800 is connected to the cross beam 600, and the other end of the upper reaction bar 800 is connected to the rear axle through a connection bracket 900. The upper reaction rod 800 and the guide arm 320 together play a role in guiding, and since the stabilizer 300 can play a role in guiding and anti-rolling at the same time, the overall integration can be improved, the lower reaction rod is eliminated, the number of parts is reduced, and the reduction of the production cost is facilitated.

Referring to fig. 4, 5 and 7, according to some embodiments of the present application, optionally, the torsion bar 310 is mounted on one side of the large bracket 200, and the extending direction of the large bracket 200 is perpendicular to the extending direction of the torsion bar 310. Specifically, the torsion bar 310 is installed at the lower end side of the large bracket 200.

Through setting the extending direction of the big support 200 and the extending direction of the torsion bar 310 to be mutually perpendicular, and the torsion bar 310 is installed on one side of the big support 200, the whole height can be reduced, the ground clearance is improved, and the problem of difficult arrangement of a low saddle vehicle type can be effectively solved.

Referring to fig. 1, 4 and 5, according to some embodiments of the present application, an installation groove 210 is optionally formed on one side of the large bracket 200. The torsion bar 310 is provided with a first bushing and a bearing cap 220, the torsion bar 310 is sleeved with the first bushing, the torsion bar 310 is mounted on the mounting groove 210 through the first bushing, and the bearing cap 220 is covered on the outer side of the first bushing and connected to the large bracket 200 so as to fix the positions of the first bushing and the torsion bar 310 on one side of the large bracket 200.

The mounting groove 210 is a half arc structure formed on one side of the large bracket 200, and the bearing cap 220 is also a half arc structure. The bearing cap 220 is coupled to the outside of the large bracket 200 by a fastening assembly. Specifically, the fastening assembly includes a fastening screw 230, a first connection hole 240 disposed on the large bracket 200, and a second connection hole 250 disposed on the bearing cap 220, wherein the fastening screw 230 is inserted into the second connection hole 250 and is screwed with the first connection hole 240, so as to fix the positions of the first bushing and the torsion bar 310 on one side of the large bracket 200.

Referring to fig. 1, 2,3 and 7, according to some embodiments of the application, optionally, the connection structure 350 includes a second bushing 351 and a mandrel 352, the second bushing 351 is disposed at the other end of the guiding arm 320, and the second bushing 351 is sleeved on the mandrel 352, and the mandrel 352 is connected to the supporting frame 100. The other end of the guide arm 320 is provided with a fourth mounting hole 370 for mounting the second bushing 351.

The second bushing 351 is a sliding bushing. When the guide arm 320 rotates to a certain angle, the guide arm can slide in the second bushing 351, the whole lifting or descending stroke can be increased, and the problem that the conventional vulcanized rubber bushing is high in torsional rigidity and cannot meet the requirement in the whole lifting or descending stroke can be effectively avoided.

Referring to fig. 1,2, 6 and 7, according to some embodiments of the application, optionally, the support frame 100 includes a supporting portion 110 and two bending portions 120, the two bending portions 120 are respectively disposed at two opposite ends of the supporting portion 110, and an air spring 400 is respectively disposed on the two bending portions 120.

The other end of the guide arm 320 is connected to a connection structure 350, and the connection structure 350 is connected to the support 100. The support portion 110 is provided with a first mounting hole 130 for mounting the shock absorber 500, a second mounting hole 140 for connecting with the rear axle, and a third mounting hole 150 for mounting the connection structure 350.

By arranging the first mounting hole 130 on the supporting portion 110, the opening at the bearing portion of the supporting frame 100 can be effectively avoided, the stress concentration is reduced, and the reliability is improved.

Referring to fig. 1, 2, 6 and 7, according to some embodiments of the present application, optionally, a positioning pin 160 is further disposed on the supporting portion 110, where the positioning pin 160 is used for positioning the rear axle, and the positioning pin 160 is a spring pin. By adopting the spring pin, the spring pin is not easy to fall off, and the assembly convenience can be improved.

Specifically, the second mounting holes 140 include four mounting holes, and are diagonally distributed two by two. The two diagonally distributed second mounting holes 140 have equal pore sizes, and the two adjacently arranged second mounting holes 140 have different pore sizes, so that the mounting accuracy can be improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. The air suspension system is characterized by comprising two supporting frames, two large brackets and a stabilizer bar, wherein an air spring and a shock absorber are arranged on each supporting frame;

the stabilizer bar comprises a twisting bar and two guide arms, the twisting bar is provided with a first end and a second end which are oppositely arranged, and the first end and the second end are respectively and rotatably connected with the large bracket;

The first end and the second end are respectively provided with a long round structure, two long round holes are respectively formed in one ends of the guide arms, the guide arms are respectively connected with the corresponding long round structures in a clamping mode through the long round holes, and the other ends of the guide arms are respectively connected with one supporting frame through a connecting structure.

2. The air suspension system of claim 1 wherein said stabilizer bar further comprises a connecting snap ring, said connecting snap ring having an inner ring and an outer ring, said connecting snap ring being in interference fit with said torsion bar through said inner ring; the long round structure is formed on the outer ring of the connecting clamping ring.

3. The air suspension system of claim 1 further comprising a cross member and a frame, wherein the cross member and the two large brackets are disposed on the frame, the cross member and the direction of extension of the torsion bar are parallel to each other, and the two large brackets, the cross member and the torsion bar together enclose a quadrilateral structure.

4. An air suspension system as claimed in claim 3 further comprising a reaction bar having one end connected to the cross member and the other end for connection to a rear axle via a connection bracket.

5. The air suspension system according to claim 1 wherein said torsion bar is mounted on one side of said large bracket with the direction of extension of said large bracket being perpendicular to the direction of extension of said torsion bar.

6. The air suspension system according to claim 1, wherein a mounting groove is formed in one side of the large bracket, a first bushing and a bearing cover are arranged on the torsion bar, the first bushing is sleeved on the torsion bar, the torsion bar is mounted on the mounting groove through the first bushing, and the bearing cover is covered on the outer side of the first bushing and connected to the large bracket so as to fix the positions of the first bushing and the torsion bar on one side of the large bracket.

7. The air suspension system of claim 1 wherein said connection structure comprises a second bushing and a spindle, said second bushing being disposed at the other end of said guide arm, said second bushing being disposed over said spindle, said spindle being connected to said support frame.

8. The air suspension system according to claim 1, wherein the support frame comprises a support portion and two bending portions, the two bending portions are respectively disposed at two ends of the support portion opposite to each other, and the two bending portions are respectively provided with one air spring.

9. The air suspension system of claim 8 wherein the other end of said guide arm is connected to a connecting structure, said connecting structure being connected to said support frame; the support part is provided with a first mounting hole for mounting the shock absorber, a second mounting hole for being connected with a rear axle and a third mounting hole for mounting the connecting structure.

10. The air suspension system of claim 8 wherein said support portion is further provided with a locating pin for locating the rear axle, said locating pin employing a spring pin.