CN217477029U - Lightweight air suspension system - Google Patents

Abstract

The utility model relates to a lightweight air suspension system, include: the left side and the right side of the axle are fixedly connected with the guide arm through the connecting assembly respectively, one end of the guide arm is rotatably connected with the guide arm support, and the other end of the guide arm is fixedly connected with the air spring. The utility model uses the arc groove to replace the through hole, the lower surface of the mandril of the U-shaped bolt is a plane, the material consumption can be reduced, and the weight is further reduced; the bent mounting part extends to the lower part of the gravity center of the air spring and is directly fixed with the air spring, so that a bias steel plate is not needed, the stress of the light guide arm is more uniform, the requirement on the torsional strength of the guide arm is reduced, and the material consumption and the weight of the guide arm are further reduced; the two inclined side plates form a triangular structure, so that the strength of the light-weight guide arm support is superior to that of the existing design of two parallel side plates, and the light-weight guide arm support is light in weight.

Description

Lightweight air suspension system

Technical Field

The utility model belongs to the technical field of the vehicle suspension and specifically relates to a lightweight air suspension system.

Background

The existing vehicle suspension has heavier weight due to the following reasons, which is not beneficial to reducing the weight of the vehicle and reducing the oil consumption:

1. the guide arm and the axle connecting assembly play a role in fixing the axle and the guide arm. The four corners of current clamp plate are formed with complete through-hole respectively, and two U type bolts pass two through-holes respectively, and this has caused the weight of current clamp plate heavier. Meanwhile, the U-shaped bolt with the circular cross section is in line contact with the cover plate in the arc groove of the cover plate, the pressure intensity of the U-shaped bolt and the cover plate is high, the thickness of the U-shaped bolt and the thickness of the cover plate need to be increased to improve the strength of the U-shaped bolt and the cover plate, and therefore the weight of the U-shaped bolt and the weight of the cover plate are high.

2. Due to the frame design of existing vehicles, there is a distance between the mounting plate of the existing guide arm and the center of gravity of the suspended resilient member (e.g., air spring). This requires a biasing steel plate to be provided between the mounting plate and the elastic member, and the mounting plate and the elastic member are fixed by the biasing steel plate. The uneven stress of the guide arm is caused by the offset steel plate, and meanwhile, the weight of the suspension assembly is increased by the offset steel plate.

3. The side plates on both sides of the existing guide arm bracket are parallel. One side of the two side plates, which is back to back, is provided with a convex bulge to ensure the strength of the side plates. The existing guide arm support has the defects of thicker plate thickness and heavier weight due to the structure, and is not beneficial to reducing the weight of a vehicle and reducing the production cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, provide a lightweight air suspension system, solved the heavier problem of current vehicle suspension weight.

A lightweight air suspension system comprising: the automobile axle comprises a connecting assembly, a guide arm support, an automobile axle, a guide arm and an air spring, wherein the left side and the right side of the automobile axle are fixedly connected with the guide arm through the connecting assembly respectively, one end of the guide arm is rotatably connected with the guide arm support, and the other end of the guide arm is fixedly connected with the air spring.

Further, the connection assembly includes bottom plate, clamp plate, apron and U type bolt, bottom plate, axle, clamp plate, guiding arm and apron are arranged along the straight line from low to high, the clamp plate side is formed with the circular arc groove, U type bolt top and apron laminating, U type bolt passes behind circular arc groove and the apron downwards and compresses tightly bottom plate, axle, clamp plate, guiding arm and apron with first nut threaded connection fixedly, U type bolt and circular arc groove laminating.

Further, the pressing plate comprises a flat plate part, a first side plate, a second side plate, a third side plate and a fourth side plate, the left side and the right side above the flat plate part are respectively and integrally formed with the second side plate and the first side plate, two arc grooves are formed in the left side of the flat plate part, an arc groove is formed in the right side of the flat plate part, the front side and the rear side below the flat plate part are respectively and integrally formed with the third side plate and the fourth side plate, a through hole is formed in the pressing plate, the through hole penetrates through the flat plate part, the first side plate and the fourth side plate, and the through hole is located in the right side of the flat plate part;

the hinge device is characterized by further comprising a hinge cylinder and a connecting part, wherein the connecting part is positioned between the hinge cylinder and the flat plate part, the hinge cylinder is positioned on the rear side of the flat plate part and the through hole, and the flat plate part, the connecting part and the hinge cylinder are integrally formed; the through hole penetrates through the connecting part.

Furthermore, the positioning device also comprises a positioning column, wherein a first positioning hole is formed in the flat plate part, strip-shaped protrusions are formed on the left side and the right side above the flat plate part, the first positioning hole is positioned between the two strip-shaped protrusions, and the height of each strip-shaped protrusion is lower than that of the first side plate and that of the second side plate; a first groove is formed below the flat plate part; the axes of the three arc grooves and the through hole are respectively superposed with the four heights of the cuboid; the positioning column is inserted into the first positioning hole, a second positioning hole is formed below the guide arm, and the positioning column is inserted into the second positioning hole.

Furthermore, the U-shaped bolt comprises a top rod and side rods, two ends of the top rod are respectively and integrally formed with the side rods, the cross section of the top rod is a rectangle with four corners formed with rounded corners, the side rods are round rods, and the lower surface of the top rod is attached to the top surface of the cover plate; the first nut is in threaded connection with the side rod and is in contact with the bottom surface of the bottom plate;

the front side and the rear side of the cover plate are respectively provided with a first limiting plate, the front side and the rear side of the cover plate are respectively provided with a second limiting plate, the ejector rod is positioned between the first limiting plate and the second limiting plate, and two side surfaces of the ejector rod are respectively attached to the first limiting plate and the second limiting plate; a positioning cylinder and a partition plate are formed below the cover plate, the partition plate divides the lower part of the cover plate into a plurality of second grooves, and the partition plate and the positioning cylinder are integrally formed;

the novel multifunctional floor is characterized in that bulges are formed on the front side and the rear side of the upper portion of the bottom plate, a third groove is formed on the upper portion of the bottom plate, fourth grooves are formed on the left side and the right side of the bottom plate, and a fifth groove is formed below the bottom plate.

The guide arm comprises a fixing part, a first connecting part, an installation part, a second connecting part and a rolling lug, the front end and the rear end of the fixing part are integrally formed with the first connecting part and the second connecting part respectively, one end, far away from the fixing part, of the first connecting part is integrally formed with the installation part, one end, far away from the fixing part, of the second connecting part is integrally formed with the rolling lug, the left side surface of the fixing part is parallel to or coincided with the left side surface of the first connecting part, the right side surface of the fixing part is parallel to or coincided with the right side surface of the first connecting part, the included angle between the left side surface of the installation part and the left side surface of the first connecting part is greater than 0 degree and smaller than 90 degrees, and the included angle between the right side surface of the installation part and the right side surface of the first connecting part is greater than 0 degree and smaller than 90 degrees;

the mounting part is provided with a mounting hole penetrating through the mounting part, the gravity center of the air spring is positioned above the mounting part, a first fixing plate is formed below the air spring, a threaded hole is formed in the first fixing plate, the screw penetrates through the mounting hole and then is in threaded connection with the threaded hole, and the mounting hole is a step hole; the gravity center of the air spring is positioned above the midpoint of the connecting line of the two mounting holes; the first fixing plate is attached to the upper surface of the mounting portion.

Further, the left side surface and the right side surface of the fixing part are parallel, the left side surface and the right side surface of the first connecting part are parallel, and the left side surface and the right side surface of the mounting part are parallel;

an arc surface for transition is formed between the left side surface of the first connecting part and the left side surface of the mounting part, and an arc surface for transition is formed between the right side surface of the first connecting part and the right side surface of the mounting part;

a second positioning hole is formed below the fixing part;

one end of the first connecting part, which is far away from the fixing part, is inclined downwards;

the thickness of the mounting part in the direction away from the first connecting part is gradually reduced;

the protection plate is sleeved on the outer sides of the second connecting portion and the rolling lug and is in contact with the second connecting portion and the rolling lug, a first through hole communicated with the second positioning hole is formed below the protection plate, and a positioning protrusion is formed above the protection plate.

Further, the guide arm support comprises a connecting plate, side plates and a fixing plate, wherein two sides of the connecting plate are integrally formed with the side plates respectively, the two side plates are not parallel, the fixing plate is located between the two side plates, and two sides of the fixing plate are fixedly connected with the side plates respectively.

Further, the side plates are perpendicular to the connecting plate;

the included angle between the two side plates is 4 degrees;

the connecting plate is in an isosceles trapezoid shape, the side plate is in a right-angle trapezoid shape, the right-angle edge of the side plate and the waist of the connecting plate are integrally formed, and an arc-shaped transition part is formed at the joint of the right-angle edge of the side plate and the waist of the connecting plate;

a bent part extending towards the direction away from the other side plate is formed on one side of the side plate away from the connecting plate, and the length of the bent part is smaller than that of one side of the side plate away from the connecting plate;

the two ends of the shaft sleeve respectively penetrate through the side plates on the two sides, and the shaft sleeve is fixedly connected with the side plates;

the fixing plate is L-shaped.

The mounting plate is provided with an expansion part and a shaft part which are integrally formed, one side of the expansion part is attached to the side plate, and the other side of the expansion part is perpendicular to the axis of the second bolt; the shaft part penetrates through the side plates and then enters between the two side plates, the limiting plate is sleeved on the outer side of the shaft part and is in threaded connection with the shaft part, one side of the limiting plate is attached to the side plates, and the other side of the limiting plate is perpendicular to the axis of the second bolt; the second bolt penetrates through the mounting plate and the side plate and then is in threaded connection with a second nut, the rubber bushing is sleeved on the outer side of the second bolt, and the rubber bushing is positioned between the two limiting plates;

the third bolt penetrates through the shaft sleeve and then is in threaded connection with the third nut;

still include the shock absorber, shock absorber one end is articulated through third bolt and guide arm support, and the other end is articulated through connecting the assembly.

The utility model has the advantages of as follows:

1. the arc groove is used for replacing the through hole, so that the used materials are reduced, and further the weight is reduced; the lower surface of the ejector rod of the U-shaped bolt is a plane and is in surface contact with the upper surface of the cover plate, compared with a round rod, the contact area is larger, the pressure intensity is lower, the strength required by parts is smaller, the material consumption can be reduced, the weight is further reduced, and the problem that the existing guide arm and axle connecting assembly is heavier is solved;

2. the bent mounting part extends to the lower part of the gravity center of the air spring and is directly fixed with the air spring, so that a bias steel plate is not needed, the stress of the light guide arm is more uniform, the service life of the guide arm is prolonged, the requirement on the torsional strength of the guide arm is reduced, and the material consumption and the weight of the guide arm are further reduced;

3. two curb plates of slope have formed the triangle-shaped structure, make lightweight guiding arm support intensity be superior to the design of two current parallel curb plates, use fixed plate and axle sleeve and two curb plate fixed connection, it is fixed also can guarantee the relative position to make one side that two curb plates kept away from the connecting plate, one side of avoiding the curb plate to keep away from the connecting plate produces the deformation, the curb plate of lightweight guiding arm support need not use the uplift and thicker panel just can guarantee with current design the same intensity, so lightweight guiding arm support's weight is lighter, material cost is lower, the problem that current guiding arm support weight is heavier has been solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawing in the following description is only an embodiment of the invention, and that for a person skilled in the art, other embodiments can be derived from the drawing provided without inventive effort.

FIG. 1: the three-dimensional structure of the utility model is shown schematically;

FIG. 2: the utility model discloses a schematic overlooking structure;

FIG. 3: the cross-sectional structure at A-A in FIG. 2 is schematic;

FIG. 4: the cross-sectional structure at B-B in FIG. 2 is schematic;

FIG. 5: a partial enlarged view at C in fig. 4;

FIG. 6: the first connection assembly is a three-dimensional structure schematic diagram;

FIG. 7 is a schematic view of: the three-dimensional structure of the connection assembly is schematically shown as the second drawing;

FIG. 8: the first three-dimensional structure schematic diagram of the pressing plate;

FIG. 9: the three-dimensional structure of the pressing plate is schematically shown as the second drawing;

FIG. 10: a schematic perspective structure of the cover plate;

FIG. 11: the three-dimensional structure of the guide arm bracket is schematic;

FIG. 12: the cross-sectional structure of the guide arm bracket is schematic;

FIG. 13: a schematic perspective structure of the guide arm;

FIG. 14: the top view structure schematic diagram of the guide arm;

FIG. 15: the stepped cross-sectional view at D-D in fig. 14.

Detailed Description

The invention will be further described with reference to the following figures and examples:

reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device 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 present invention.

The first embodiment is as follows:

as shown in fig. 1 to 15, the present embodiment provides a lightweight air suspension system including: the automobile suspension device comprises a connecting assembly, a guide arm support 6, an axle 7, a guide arm 8 and an air spring 9, wherein the left side and the right side of the axle 7 are fixedly connected with the guide arm 8 through the connecting assembly respectively, one end of the guide arm 8 is rotatably connected with the guide arm support 6, and the other end of the guide arm 8 is fixedly connected with the air spring 9.

Further, the connection assembly includes bottom plate 1, clamp plate 2, apron 3 and U type bolt 4, bottom plate 1, axle 7, clamp plate 2, guiding arm 8 and apron 3 are arranged along the straight line from low to high, 2 sides of clamp plate are formed with circular arc groove 200, 4 tops of U type bolt are laminated with apron 3, U type bolt 4 passes circular arc groove 200 and apron 3 back downwards and first nut 43 threaded connection compresses tightly bottom plate 1, axle 7, clamp plate 2, guiding arm 8 and apron 3 fixedly, U type bolt 4 and circular arc groove 200 laminating.

Further, the pressing plate 2 includes a flat plate portion 20, a first side plate 21, a second side plate 22, a third side plate 23 and a fourth side plate 24, the left side and the right side above the flat plate portion 20 are respectively and integrally formed with the second side plate 22 and the first side plate 21, two circular arc grooves 200 are formed at the left side of the flat plate portion 20, one circular arc groove 200 is formed at the right side of the flat plate portion 20, the front side and the rear side below the flat plate portion 20 are respectively and integrally formed with the third side plate 23 and the fourth side plate 24, a through hole 27 is formed in the pressing plate 2, the through hole 27 penetrates through the flat plate portion 20, the first side plate 21 and the fourth side plate 24, and the through hole 27 is located at the right side of the flat plate portion 20;

the hinge device further comprises a hinge barrel 25 and a connecting part 26, wherein the connecting part 26 is positioned between the hinge barrel 25 and the flat plate part 20, the hinge barrel 25 is positioned at the rear side of the flat plate part 20 and the through hole 27, and the flat plate part 20, the connecting part 26 and the hinge barrel 25 are integrally formed; the through hole 27 passes through the connection portion 26.

Further, the positioning column 5 is further included, a first positioning hole 202 is formed in the flat plate portion 20, strip-shaped protrusions 201 are formed on the left side and the right side above the flat plate portion 20, the first positioning hole 202 is located between the two strip-shaped protrusions 201, and the height of each strip-shaped protrusion 201 is lower than the height of each first side plate 21 and the height of each second side plate 22; a first groove 203 is formed below the flat plate part 20; the axes of the three arc grooves 200 and the through hole 27 are respectively superposed with the four heights of the cuboid; the positioning post 5 is inserted into the first positioning hole 202, a second positioning hole 811 is formed below the guide arm 8, and the positioning post 5 is inserted into the second positioning hole 811.

Further, the U-shaped bolt 4 comprises a top rod 41 and side rods 42, two ends of the top rod 41 are respectively and integrally formed with the side rods 42, the cross section of the top rod 41 is a rectangle with four corners formed with rounded corners, the side rods 42 are round rods, and the lower surface of the top rod 41 is attached to the top surface of the cover plate 3; the first nut 43 is in threaded connection with the side rod 42, and the first nut 43 is in contact with the bottom surface of the bottom plate 1;

first limiting plates 34 are respectively formed on the front side and the rear side of the cover plate 3, second limiting plates 35 are respectively formed on the front side and the rear side of the cover plate 3, the ejector rod 41 is located between the first limiting plate 34 and the second limiting plate 35, and two side surfaces of the ejector rod 41 are respectively attached to the first limiting plate 34 and the second limiting plate 35; a positioning cylinder 31 and a partition plate 33 are formed below the cover plate 3, the partition plate 33 divides the lower part of the cover plate 3 into a plurality of second grooves 32, and the partition plate 33 and the positioning cylinder 31 are integrally formed;

the improved structure of the floor is characterized in that bulges 13 are formed on the front side and the rear side above the bottom plate 1, a third groove 11 is formed above the bottom plate 1, fourth grooves 12 are formed on the left side and the right side of the bottom plate 1, and a fifth groove 14 is formed below the bottom plate 1.

Further, a screw 92 is included, the guide arm 8 includes a fixing portion 81, a first connecting portion 82, a mounting portion 83, a second connecting portion 84 and a lug 85, the front and rear ends of the fixing portion 81 are integrally formed with the first connection portion 82 and the second connection portion 84, the end of the first connecting portion 82 away from the fixing portion 81 is integrally formed with the mounting portion 83, the end of the second connecting portion 84 away from the fixing portion 81 is integrally formed with the lug 85, the left side surface of the fixing part 81 is parallel to or overlapped with the left side surface of the first connecting part 82, the right side surface of the fixing part 81 is parallel to or overlapped with the right side surface of the first connecting part 82, the left side surface of the mounting portion 83 and the left side surface of the first connecting portion 82 form an included angle greater than 0 degree and less than 90 degrees, the included angle between the right side surface of the mounting part 83 and the right side surface of the first connecting part 82 is greater than 0 degree and smaller than 90 degrees;

the mounting portion 83 is provided with a mounting hole 831 penetrating through the mounting portion 83, the center of gravity of the air spring 9 is located above the mounting portion 83, a first fixing plate 91 is formed below the air spring 9, a threaded hole 911 is formed in the first fixing plate 91, the screw 92 penetrates through the mounting hole 831 and then is in threaded connection with the threaded hole 911, and the mounting hole 831 is a stepped hole; the gravity center of the air spring 9 is positioned above the middle point of the connecting line of the two mounting holes 831; the first fixing plate 91 is attached to the upper surface of the mounting portion 83.

Further, the left and right sides of the fixing portion 81 are parallel, the left and right sides of the first connecting portion 82 are parallel, and the left and right sides of the mounting portion 83 are parallel;

an arc surface for transition is formed between the left side surface of the first connecting part 82 and the left side surface of the mounting part 83, and an arc surface for transition is formed between the right side surface of the first connecting part 82 and the right side surface of the mounting part 83;

a second positioning hole 811 is formed below the fixing portion 81;

one end of the first connecting part 82 far away from the fixing part 81 inclines downwards;

the thickness of the mounting portion 83 in the direction away from the first connecting portion 82 is gradually reduced;

the protection plate 80 is fixed to the fixing portion 81 at two ends of the protection plate 80, the protection plate 80 is sleeved on the outer sides of the second connecting portion 84 and the rolling lug 85 and contacts with the second connecting portion 84 and the rolling lug 85, a first through hole 802 communicated with a second positioning hole 811 is formed below the protection plate 80, and a positioning protrusion 801 is formed above the protection plate 80.

Further, the guide arm support 6 includes a connecting plate 61, side plates 62 and a fixing plate 64, two sides of the connecting plate 61 are respectively and integrally formed with the side plates 62, the two side plates 62 are not parallel, the fixing plate 64 is located between the two side plates 62, and two sides of the fixing plate 64 are respectively and fixedly connected with the side plates 62.

Further, the side plate 62 is perpendicular to the connecting plate 61;

the included angle between the two side plates 62 is 4 degrees;

the connecting plate 61 is an isosceles trapezoid, the side plate 62 is a right trapezoid, the right-angle side of the side plate 62 and the waist of the connecting plate 61 are integrally formed, and an arc-shaped transition part 16 is formed at the joint of the right-angle side of the side plate 62 and the waist of the connecting plate 61;

a bent part 63 extending in the direction away from the other side plate 62 is formed on one side of the side plate 62 away from the connecting plate 61, and the length of the bent part 63 is smaller than that of the side plate 62 away from the connecting plate 61;

the anti-theft device further comprises a shaft sleeve 65, two ends of the shaft sleeve 65 respectively penetrate through the side plates 62 on two sides, and the shaft sleeve 65 is fixedly connected with the side plates 62;

the fixing plate 64 is L-shaped.

Further, the mounting plate 66 is provided with an expanded part 661 and a shaft part 662, the expanded part 661 and the shaft part 662 are integrally formed, one side of the expanded part 661 is attached to the side plate 62, and the other side of the expanded part 661 is perpendicular to the axis of the second bolt 68; the shaft part 662 penetrates through the side plates 62 and then enters between the two side plates 62, the limiting plate 67 is sleeved outside the shaft part 662 and is in threaded connection with the shaft part 662, one side of the limiting plate 67 is attached to the side plates 62, and the other side of the limiting plate 67 is perpendicular to the axis of the second bolt 68; the second bolt 68 penetrates through the mounting plate 66 and the side plate 62 and then is in threaded connection with a second nut 681, the rubber bushing 600 is sleeved on the outer side of the second bolt 68, and the rubber bushing 600 is located between the two limiting plates 67;

the third bolt 69 and a third nut 691 are further included, and the third bolt 69 passes through the shaft sleeve 65 and then is in threaded connection with the third nut 691;

still include the shock absorber, shock absorber one end is articulated through third bolt and guiding arm support, and the other end is articulated through the connection assembly.

Connection assembly structure principle:

the third groove 11, the fourth groove 12 and the fifth groove 14 of the soleplate 1 reduce the amount of material used, thereby reducing the weight of the soleplate 1.

The three circular arc grooves 200 and the through holes 27 are respectively located at four corners of the flat plate portion 20, an inner wall of the circular arc groove 200 is a part of a cylindrical surface, and the through hole 27 is a cylindrical hole. The circular arc groove 200 is used instead of the through hole, so that the used materials can be reduced, and further the weight is reduced. Since the hinge cylinder 25 is hinged to the damper 28 and receives the force of the damper 28, the circular arc groove 200 is not used here, but the through hole 27 is used to secure the strength of the whole to prevent the deformation. Meanwhile, the through hole 27 passes through the fourth side plate 24, so that the axial length of the through hole 27 is increased, the strength of the through hole 27 is further increased, and the deformation of the inner wall of the through hole 27 is prevented. The first grooves 203 and the strip-shaped protrusions 201 also reduce the amount of material used, thereby reducing the weight of the platen 2.

The top of the cover plate 3 adopts the first limit plate 34 and the second limit plate 35 instead of the groove, so that the weight of the cover plate 3 is reduced; the bottom of the cover plate 3 is lightened by the second groove 32 and is reinforced by the partition plate 33.

The lower surface of the ejector rod 41 is a plane and is attached to the upper surface of the cover plate 3, and compared with a round rod, the ejector rod has the advantages of larger contact area, lower pressure, lower strength required by parts, capability of reducing the material consumption and further weight reduction.

The guide arm bracket 6 has the structural principle that:

the angled side plates 62 form a triangular structure that provides the lightweight guide arm bracket with strength superior to the prior two parallel side plate designs. The fixing plate 64 and the shaft sleeve 65 are fixedly connected with the two side plates 62, so that the side, away from the connecting plate 61, of the two side plates 62 can also ensure that the relative positions are fixed, and the side, away from the connecting plate 61, of the side plate 62 is prevented from being deformed.

The side plates 12 of the guide arm bracket 6 can ensure the same strength as the existing design without using bulges and thicker plates, so the light guide arm bracket has light weight and lower material cost.

In the present application, the connecting plate 61 and the side plate 62 are both flat plates.

Since the rubber bush 60, the end of the second bolt 5, and the second nut 51 are all required to be in contact with a surface parallel to the end surface thereof, and the side plate 62 is not parallel to the end surface of the above components, the mounting plate 66 and the stopper plate 67 are required to be used.

The side surface of the mounting plate 66, which is away from the side plate 62, of the enlarged portion 661 is parallel to the end of the second bolt 68 and the end surface of the second nut 681, and the side surface of the enlarged portion 661, which is close to the side plate 62, is in contact with (parallel to) the side plate 62. The side face of the stopper plate 67 close to the rubber bush 60 is parallel to the end face of the rubber bush 60, and the side face of the stopper plate 67 away from the rubber bush 60 is attached to the side plate 62 (attached means contact and parallel). The stopper plates 67 on both sides serve to restrict the axial movement of the rubber bushing 60 along the second bolt 68.

The guide arm 8 structure principle:

the guide arm 8 adopts a second positioning hole 811, which is more beneficial to demoulding during casting.

The installation part 83 bent relative to the fixing part 81 and the first connection part 82 can extend to the lower part of the gravity center of the elastic element to be directly fixed with the elastic element, so that the installation part 83 and the air spring 9 are not required to be fixed by using a bias steel plate, the stress of the guide arm 8 is more uniform, the service life of the guide arm 8 is prolonged, the requirement on the torsional strength of the guide arm 8 is reduced, and the material consumption and the weight of the guide arm 8 can be reduced.

The force of the air spring 9 is transmitted to the fixing portion 81 and the first connecting portion 82 through the mounting portion 83. And a biasing steel plate is not needed between the air spring 9 and the mounting part 83 to transfer force, so that the mounting part 83 is stressed more uniformly, and the situation that the biasing steel plate deformed by stress needs to be frequently replaced is avoided.

The working principle is as follows:

a first slot for receiving the guide arm 8 is formed between the first side plate 21 and the second side plate 22, and a second slot for receiving the axle 7 is formed between the third side plate 23 and the fourth side plate 24. One U-bolt 4 passes through two circular arc grooves 200 and the other U-bolt 4 passes through one circular arc groove 200 and the through hole 27.

The upper side and the lower side of the axle 7 are respectively attached to the pressing plate 2 and the bottom plate 1, the guide arm 8 is positioned between the pressing plate 2 and the cover plate 3, and the protection plate 80 is respectively attached to the pressing plate 2 and the cover plate 3. The positioning column 5 is inserted upward through the protection plate 80 into the second positioning hole 811 below the guide arm 8, so that the movement of the guide arm 8 is restricted, and the first side plate 21 and the second side plate 22 restrict the rotation of the guide arm 8. The positioning protrusion 801 formed above the protection plate 80 is inserted into the positioning cylinder 31 to limit the position.

The front side and the rear side of the axle 7 are attached to the two bulges 13, the third side plate 23 and the fourth side plate 24, and the cover plate 3, the guide arm 8, the protection plate 80, the pressing plate 2, the axle 7 and the bottom plate 1 are pressed and fixed by the U-shaped bolt 4 and the nut 6.

The rolling lug 85 is sleeved outside the rubber bushing 60 in a contact mode.

When the axle 7 and the wheels connected with the two ends of the axle move up and down, the air spring 9 can compress or rebound to adapt to the road surface.

When the axle 7 is turned left and right (i.e. the two wheels are at different heights), the air springs 9 on the left and right sides are at different heights to accommodate the tilted axle 7.

The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.

Claims (9)

1. A lightweight air suspension system, comprising: the automobile steering device comprises a connecting assembly, a guide arm support (6), an axle (7), a guide arm (8) and an air spring (9), wherein the left side and the right side of the axle (7) are fixedly connected with the guide arm (8) through the connecting assembly respectively, one end of the guide arm (8) is rotatably connected with the guide arm support (6), and the other end of the guide arm (8) is fixedly connected with the air spring (9);

the connecting assembly comprises a bottom plate (1), a pressing plate (2), a cover plate (3) and U-shaped bolts (4), the bottom plate (1), an axle (7), the pressing plate (2), guide arms (8) and the cover plate (3) are arranged from low to high along a straight line, arc grooves (200) are formed in the side faces of the pressing plate (2), the tops of the U-shaped bolts (4) are attached to the cover plate (3), the U-shaped bolts (4) downwards penetrate through the arc grooves (200) and the cover plate (3) and then are fixedly compressed with the bottom plate (1), the axle (7), the pressing plate (2), the guide arms (8) and the cover plate (3) through threaded connection with first nuts (43), and the U-shaped bolts (4) are attached to the arc grooves (200).

2. The lightweight air suspension system of claim 1, wherein: the pressing plate (2) comprises a flat plate part (20), a first side plate (21), a second side plate (22), a third side plate (23) and a fourth side plate (24), the left side and the right side above the flat plate part (20) are integrally formed with the second side plate (22) and the first side plate (21) respectively, two arc grooves (200) are formed in the left side of the flat plate part (20), one arc groove (200) is formed in the right side of the flat plate part (20), the front side and the rear side below the flat plate part (20) are integrally formed with the third side plate (23) and the fourth side plate (24) respectively, a through hole (27) is formed in the pressing plate (2), the through hole (27) penetrates through the flat plate part (20), the first side plate (21) and the fourth side plate (24), and the through hole (27) is located in the right side of the flat plate part (20);

the hinge device is characterized by further comprising a hinge barrel (25) and a connecting portion (26), wherein the connecting portion (26) is located between the hinge barrel (25) and the flat plate portion (20), the hinge barrel (25) is located on the rear side of the flat plate portion (20) and the through hole (27), and the flat plate portion (20), the connecting portion (26) and the hinge barrel (25) are integrally formed; the through hole (27) passes through the connecting portion (26).

3. A lightweight air suspension system as set forth in claim 2, wherein: the positioning device is characterized by further comprising a positioning column (5), wherein a first positioning hole (202) is formed in the flat plate portion (20), strip-shaped protrusions (201) are formed on the left side and the right side above the flat plate portion (20), the first positioning hole (202) is located between the two strip-shaped protrusions (201), and the height of each strip-shaped protrusion (201) is lower than that of the first side plate (21) and that of the second side plate (22); a first groove (203) is formed below the flat plate part (20); the axes of the three arc grooves (200) and the through hole (27) are respectively superposed with the four heights of the cuboid; the positioning column (5) is inserted into the first positioning hole (202), a second positioning hole (811) is formed below the guide arm (8), and the positioning column (5) is inserted into the second positioning hole (811).

4. The lightweight air suspension system of claim 1, wherein: the U-shaped bolt (4) comprises an ejector rod (41) and side rods (42), two ends of the ejector rod (41) are integrally formed with the side rods (42) respectively, the cross section of the ejector rod (41) is a rectangle with four corners formed with rounded corners, the side rods (42) are round rods, and the lower surface of the ejector rod (41) is attached to the top surface of the cover plate (3); the first nut (43) is in threaded connection with the side rod (42), and the first nut (43) is in contact with the bottom surface of the bottom plate (1);

first limiting plates (34) are respectively formed on the front side and the rear side of the cover plate (3), second limiting plates (35) are respectively formed on the front side and the rear side of the cover plate (3), the ejector rod (41) is located between the first limiting plates (34) and the second limiting plates (35), and two side faces of the ejector rod (41) are respectively attached to the first limiting plates (34) and the second limiting plates (35); a positioning cylinder (31) and a partition plate (33) are formed below the cover plate (3), the partition plate (33) divides the lower part of the cover plate (3) into a plurality of second grooves (32), and the partition plate (33) and the positioning cylinder (31) are integrally formed;

the novel multifunctional floor is characterized in that bulges (13) are formed on the front side and the rear side of the upper portion of the bottom plate (1), a third groove (11) is formed on the upper portion of the bottom plate (1), fourth grooves (12) are formed on the left side and the right side of the bottom plate (1), and a fifth groove (14) is formed below the bottom plate (1).

5. The lightweight air suspension system of claim 1, wherein: still include screw (92), guiding arm (8) include fixed part (81), first connecting portion (82), installation department (83), second connecting portion (84) and book ear (85), both ends respectively with first connecting portion (82) and second connecting portion (84) integrated into one piece around fixed part (81), the one end and the installation department (83) integrated into one piece that fixed part (81) were kept away from to first connecting portion (82), the one end and the book ear (85) integrated into one piece that fixed part (81) were kept away from to second connecting portion (84), the left surface of fixed part (81) is parallel or the coincidence with the left surface of first connecting portion (82), the right flank of fixed part (81) is parallel or the coincidence with the right flank of first connecting portion (82), the contained angle of the left surface of installation department (83) and the left surface of first connecting portion (82) is greater than 0 degree and is less than 90 degrees, the included angle between the right side surface of the mounting part (83) and the right side surface of the first connecting part (82) is more than 0 degree and less than 90 degrees;

the mounting portion (83) is provided with a mounting hole (831) penetrating through the mounting portion (83), the center of gravity of the air spring (9) is located above the mounting portion (83), a first fixing plate (91) is formed below the air spring (9), a threaded hole (911) is formed in the first fixing plate (91), the screw (92) penetrates through the mounting hole (831) and then is in threaded connection with the threaded hole (911), and the mounting hole (831) is a stepped hole; the gravity center of the air spring (9) is positioned above the midpoint of the connecting line of the two mounting holes (831); the first fixing plate (91) is attached to the upper surface of the mounting part (83).

6. The lightweight air suspension system of claim 5, wherein: the left side surface and the right side surface of the fixing part (81) are parallel, the left side surface and the right side surface of the first connecting part (82) are parallel, and the left side surface and the right side surface of the mounting part (83) are parallel;

an arc surface for transition is formed between the left side surface of the first connecting portion (82) and the left side surface of the mounting portion (83), and an arc surface for transition is formed between the right side surface of the first connecting portion (82) and the right side surface of the mounting portion (83);

a second positioning hole (811) is formed below the fixing part (81);

one end of the first connecting part (82) far away from the fixing part (81) inclines downwards;

the thickness of the mounting part (83) in the direction away from the first connecting part (82) is gradually reduced;

still include protection shield (80), protection shield (80) both ends are fixed with fixed part (81) respectively, protection shield (80) suit is in the outside of second connecting portion (84) and book ear (85) and contact with second connecting portion (84) and book ear (85), protection shield (80) below is formed with first through-hole (802) that are linked together with second locating hole (811), protection shield (80) top is formed with location arch (801).

7. The lightweight air suspension system of claim 5, wherein: the guide arm support (6) comprises a connecting plate (61), side plates (62) and a fixing plate (64), wherein the two sides of the connecting plate (61) are integrally formed with the side plates (62), the two side plates (62) are not parallel, the fixing plate (64) is located between the two side plates (62), and the two sides of the fixing plate (64) are fixedly connected with the side plates (62) respectively.

8. The lightweight air suspension system of claim 7, wherein: the side plates (62) are perpendicular to the connecting plate (61);

the included angle between the two side plates (62) is 4 degrees;

the connecting plate (61) is an isosceles trapezoid, the side plates (62) are right-angled trapezoids, right-angled edges of the side plates (62) and the waist of the connecting plate (61) are integrally formed, and an arc-shaped transition part (16) is formed at the connecting part of the right-angled edges of the side plates (62) and the waist of the connecting plate (61);

a bent part (63) extending towards the direction away from the other side plate (62) is formed on one side of each side plate (62) far away from the connecting plate (61), and the length of each bent part (63) is smaller than that of one side of each side plate (62) far away from the connecting plate (61);

the anti-theft device is characterized by further comprising a shaft sleeve (65), wherein two ends of the shaft sleeve (65) respectively penetrate through the side plates (62) on the two sides, and the shaft sleeve (65) is fixedly connected with the side plates (62);

the fixing plate (64) is L-shaped.

9. The lightweight air suspension system of claim 8, wherein: the mounting plate (66) is provided with an expanded part (661) and a shaft part (662), the expanded part (661) and the shaft part (662) are integrally formed, one side of the expanded part (661) is attached to the side plate (62), and the other side of the expanded part (661) is perpendicular to the axis of the second bolt (68); the shaft part (662) penetrates through the side plates (62) and then enters between the two side plates (62), the limiting plate (67) is sleeved on the outer side of the shaft part (662) and is in threaded connection with the shaft part (662), one side of the limiting plate (67) is attached to the side plates (62), and the other side of the limiting plate (67) is perpendicular to the axis of the second bolt (68); the second bolt (68) penetrates through the mounting plate (66) and the side plate (62) and then is in threaded connection with a second nut (681), the rubber bushing (60) is sleeved on the outer side of the second bolt (68), and the rubber bushing (60) is located between the two limiting plates (67);

the third bolt (69) penetrates through the shaft sleeve (65) and then is in threaded connection with the third nut (691);

the shock absorber (28) is further included, one end of the shock absorber (28) is hinged with the guide arm support (6) through a third bolt (69), and the other end of the shock absorber (28) is hinged through a connecting assembly.

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