CN109703317B - Transverse leaf spring rear torsion beam suspension system - Google Patents
Transverse leaf spring rear torsion beam suspension system Download PDFInfo
- Publication number
- CN109703317B CN109703317B CN201811544964.7A CN201811544964A CN109703317B CN 109703317 B CN109703317 B CN 109703317B CN 201811544964 A CN201811544964 A CN 201811544964A CN 109703317 B CN109703317 B CN 109703317B
- Authority
- CN
- China
- Prior art keywords
- plate
- spring
- hole
- torsion beam
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a rear torsion beam suspension system of a transverse blade spring, which comprises a torsion beam welding assembly, a shock absorber, a bushing, an elastic body, a transverse blade spring and a spring fixing support assembly, wherein the torsion beam welding assembly is fixedly arranged on the rear torsion beam; the lower ends of the shock absorbers and the lower ends of the shock absorbers are all arranged on the torsion beam welding assembly; the left end and the right end of the transverse blade spring are respectively connected with the torsion beam welding assembly through the elastic body assembly; the spring fixing support component is arranged on the transverse blade spring. This technical scheme's torsion beam suspension structure behind horizontal leaf spring, two bushes and two spring fixed support subassembly and automobile body four-point connection about the suspension front end increase substantially the operating stability of vehicle, and horizontal leaf spring and elastomer subassembly are established ties, improve the flexibility of suspension, reduce the motion friction noise, improve the ride comfort and the travelling comfort of vehicle, and weight reduction, the structure is simplified.
Description
Technical Field
The invention belongs to the technical field of automobile suspension systems, and particularly relates to a rear torsion beam suspension system with a transverse leaf spring.
Background
The torsion beam suspension comprises a vehicle axle type torsion beam, a coupling type torsion beam and a pivot type torsion beam, wherein the torsion beam in the torsion beam suspension mainly comprises a cross beam and two longitudinal arms, and the torsion beam and the longitudinal arms are combined at the position of an axle to call the vehicle axle type torsion beam; the torsion beam is arranged in the middle of the trailing arm and called as a coupling torsion beam, and because the axle type vehicle positioning parameter has large change and the pivot type anti-roll capability is poor, all the prior art adopts the coupling torsion beam in order to take the wheel positioning and anti-roll capability into account.
Although having limitations in design performance factors such as ride comfort, driving stability, etc., coupled torsion beam suspension systems (hereinafter, referred to as CTBA) have been largely used for rear wheel suspension systems of compact and medium-sized vehicles, compared to independent suspension systems, because the torsion beam suspension systems have advantages of fewer parts, light weight, and low manufacturing cost.
Fig. 1 is a perspective view of a CTBA in the prior art, including a coupling torsion beam 1', a coil spring 2', a damper 3', a rubber pad 4', a bushing 5', a left mounting bracket 6' and a right mounting bracket 7 '.
The coupling torsion beam 1' is a welding assembly and comprises a sleeve, a first longitudinal arm, a cross beam, a left spring seat, a first shock absorber support, a first hub shaft support, a second longitudinal arm, a second hub shaft support, a right spring seat and a second shock absorber support; the cross beams are various and are key parts of the coupling torsion beam 1', the welding positions and the shapes of the cross beams have great influence on the performance of the torsion beam suspension, and the cross beams are provided with stabilizer bars and are not provided with stabilizer bars; the cross section has V shape, U shape, etc., and also has closed hydroformed I shape, V shape, etc.; the torsion beam has different structures along with different structures such as the cross beam.
Two bushings 5' are respectively pressed into the sleeve; the lower ends of the two spiral springs 2 'are respectively arranged on the left spring seat and the right spring seat, and the upper ends are fixed on the vehicle body through rubber pads 4'; the lower ends of the two shock absorbers 3' are respectively arranged on the left shock absorber bracket and the second shock absorber bracket, and the upper ends are connected with the vehicle body; connecting the left mounting bracket and the right mounting bracket with the coupling torsion beam 1' by bolts through central holes of the bushings, and connecting and fixing the left mounting bracket and the right mounting bracket on the vehicle body by bolts along the Z direction; the left and right wheels are mounted on the left and second hub axle supports on the coupling torsion beam 1' to form a CTBA, as shown in fig. 1.
The spiral spring 2' only plays an elastic role in the Z direction of the CTBA; the shock absorber 3 'has damping force, an upper limiting block and a lower limiting block are arranged in the shock absorber 3' to limit the upper position and the lower position of a suspension, but the spiral spring 2 'and the shock absorber 3' do not play any limiting or elastic role in the X direction and the Y direction of the CTBA.
In view of the driving stability when the vehicle is steered, the vehicle should maintain a tendency to understeer, and for this purpose, it is desirable that the rear outer toe (toe-in) of the steered vehicle should be induced, and the rear inner toe (toe-out) of the steered vehicle should be induced.
Fig. 2 is a plan view of the movement characteristics of the CTBA to which a lateral force is applied, and the suspension is connected to the vehicle body only through the bushings 5' at the front left and right sides. When the vehicle is turning, due to the flexibility of the rubber in the bush 5', under the action of the lateral force F1, the entire CTBA rotates about the Z-axis due to the deformation of the bush and produces toe-out at the rear outer wheel W1, while the rebound rear inner wheel W2 is applied with the lateral force F1 and thus maintains the toe-out angle before or becomes toe-in, so that the vehicle is oversteered, reducing the turning stability of the vehicle.
Disclosure of Invention
The invention aims to provide a rear torsion beam suspension system with a transverse blade spring, which is used for solving the problems of rear outer wheel toe-in and rear inner wheel toe-in when a vehicle turns in the torsion beam suspension system in the prior art, improving the operating stability of the vehicle and improving the smoothness and NVH (noise, vibration and harshness) performance of the vehicle.
The invention is realized by the following technical scheme:
the rear torsion beam suspension system of the transverse blade spring comprises a torsion beam welding assembly, a shock absorber, a bushing, a transverse blade spring, an elastic body component and a spring fixing support component;
the left side of the front end of the torsion beam welding assembly is connected with a left vehicle body U-shaped support on the left side of a vehicle body through one bushing, and the right side of the front end of the torsion beam welding assembly is connected with a right vehicle body U-shaped support on the right side of the vehicle body through the other bushing;
the lower ends of the two vibration dampers are respectively arranged on the left side and the right side of the torsion beam welding assembly, and the upper ends of the vibration dampers are respectively fixed on the vehicle body;
one end of the transverse leaf spring is connected with the left side of the torsion beam welding assembly through one elastic body component, and the other end of the transverse leaf spring is connected with the right side of the torsion beam welding assembly through the other elastic body component;
the spring fixing support assembly is arranged on the transverse leaf spring.
The torsion beam welding assembly comprises a cross beam, a first sleeve, a first longitudinal arm, a first elastic body mounting seat, a first hub shaft support, a first shock absorber support, a second sleeve, a second longitudinal arm, a second elastic body mounting seat, a second hub shaft support and a second shock absorber support;
the middle parts of the first trailing arm and the second trailing arm are fixedly connected through the cross beam;
the first sleeve is fixed at the front end of the first longitudinal arm, and the second sleeve is fixed at the front end of the second longitudinal arm;
the first damper bracket is fixed to the inner side of the rear part of the first trailing arm, and the first hub axle support is fixed to the outer side of the rear part of the first trailing arm;
the second damper bracket is fixed to the inner side of the rear portion of the second trailing arm, and the second hub axle support is fixed to the outer side of the rear portion of the second trailing arm;
the first elastomer mounting base is fixed above the rear part of the first trailing arm, and the second elastomer mounting base is fixed above the rear part of the second trailing arm.
The first elastic body mounting seat comprises a U-shaped plate, a circular tube, a first welding nut and a second welding nut;
the U-shaped plate comprises a top plate and side plates at two sides, and a first bolt through hole, a second bolt through hole and a large through hole positioned in the middle of the top plate are formed in the top plate;
the first welding nut and the second welding nut are fixed on the lower surface of the top plate and correspond to the first bolt through hole and the second bolt through hole one by one respectively, and the outer diameters of the first bolt through hole and the second bolt through hole are slightly larger than the diameters of the outer threads of the first welding nut and the second welding nut;
the upper end of the circular tube is relatively coaxial with the large through hole and is fixed on the lower surface of the top plate, and the lower end of the circular tube and the lower ends of the two side plates are fixed on the first longitudinal arm.
The first elastomer mount is the same in structure as the second elastomer mount.
The transverse blade spring comprises a spring body and plate end reinforcing plates at two ends of the spring body;
the spring body is bilaterally symmetrical and comprises a straight plate end, a performance section, a transition ring and a raised ring; two upper positioning holes are formed in the lower surface of the middle of the spring body, and the upper positioning holes are blind holes;
the end of the flat plate is a straight plate, the outer end of the flat plate is provided with two chamfers, and the middle part of the flat plate is provided with a first bolt through hole;
the performance section is in a circular ring shape or a straight plate shape;
the transition ring is a transition between the performance section and the raised ring;
the spring body is an equal-width parabolic variable-section FRP composite material spring, an equal-section FRP composite material spring or an equal-width parabolic variable-section steel plate spring;
the plate end reinforcing plate is fixed on the flat plate end and comprises a reinforcing plate main plate, an end plate and two side plates, and a second bolt through hole is formed in the center of the reinforcing plate main plate;
when the spring body is an equal-width parabolic variable-section FRP composite spring or an equal-section FRP composite spring, the reinforcing plate main plate, the end plate and the two side plates wrap the flat plate end; when the spring body is an equal-width parabolic variable-section steel plate spring, the flat plate end is not provided with the plate end reinforcing plate;
the center line of the first bolt through hole is collinear with the center line of the second bolt through hole.
The elastic body assembly is arranged between the first elastic body mounting seat and the left end of the transverse leaf spring, and the other elastic body assembly is arranged between the second elastic body mounting seat and the right end of the transverse leaf spring.
The elastic body assembly comprises a bottom plate, an elastic body, a bolt and an upper plate;
the elastic body is a cuboid, and elastic body grooves are formed in two ends of the elastic body;
the periphery of the bottom plate is provided with a flanging, and the bottom plate is provided with two bottom plate through holes;
the upper plate is rectangular, an upper plate through hole is formed in the center of the upper plate, flanges are arranged on the periphery of the upper plate through hole, upper plate grooves are formed in the two ends of the upper plate through hole, and the upper ends of the elastic body grooves are wrapped by the upper plate grooves;
the bolt penetrates through the upper plate through hole;
the bottom plate, the upper plate, the elastic body and the lower end of the bolt are vulcanized into an integral structure.
The spring fixing support assembly comprises a spring fixing support, a lower cushion block, a positioning pin, an upper cushion block and a bolt;
the spring fixing support is in a shape like a Chinese character 'ji', reinforcing ribs are arranged on two sides of the bottom edge of the fixing support, a boss extending downwards is arranged in the center of the spring fixing support, a lower positioning hole is formed in the upper surface opposite to the boss, and the lower positioning hole is a blind hole; end lugs are arranged at two ends of the base, and end lug through holes are formed in the end lugs;
the lower cushion block is provided with a positioning pin through hole, the lower end of the positioning pin is arranged in the lower positioning hole, and the upper end of the positioning pin is arranged in the upper positioning hole.
The invention has the beneficial effects that:
this technical scheme's horizontal leaf spring torsion beam suspension structure increases substantially the stability of vehicle car direction, and horizontal leaf spring and elastomer are established ties, improve the flexibility of suspension, reduce the friction noise in the motion, improve ride comfort, travelling comfort and NVH performance of vehicle, and weight reduction, simple structure.
Drawings
Fig. 1 is a perspective view of a prior art CTBA;
fig. 2 is a top view of the movement characteristics of a CTBA with a lateral force applied;
FIG. 3 is a perspective view of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is an enlarged view at I of FIG. 5;
FIG. 7 is an enlarged view taken at II of FIG. 5;
FIG. 8 is a cross-sectional view B-B of FIG. 5;
FIG. 9 is a cross-sectional view C-C of FIG. 5;
FIG. 10 is a schematic view of a torsion beam welding assembly
FIG. 11 is a schematic view of a rectangular elastomeric member;
FIG. 12 is a schematic view of a spring mounting bracket;
FIG. 13 is a schematic view of a plate end stiffener;
FIG. 14 is a schematic view of the front end of the torsion beam welding assembly attached to the vehicle body.
Description of the reference numerals
1' torsion beam, 2' helical spring, 3' shock absorber, 4' rubber pad, 5' bush, 6' left mounting bracket, 7' right mounting bracket;
WC wheel center, W1 rear outer wheel, W2 rear inner wheel, F1 lateral force, SP relative center of rotation;
1 torsion beam welded assembly, 11 cross beam, 12 first sleeve, 13 first trailing arm, 14 first elastomer mount, 141U-shaped plate, 1411 top plate, 1412 big through hole, 1413 first bolt through hole, 1414 second bolt through hole, 142 round tube, 143 first weld nut, 144 second weld nut, 15 first hub axle mount, 16 first damper bracket, 17 second sleeve, 18 second trailing arm, 19 second elastomer mount, 20 second hub axle mount, 21 second damper bracket;
2 shock absorber, 3 bushing;
4, an elastomer component, 41 bolts, 411 threaded rods, 412 disc frameworks, 42 elastomers, 421 elastomer grooves, 43 upper plates, 431 upper plate flanges, 432 upper plate grooves and 433 upper plate through holes; 44 bottom plate, 441 lower plate flanging, 442 bottom plate via hole;
5, transversely placing a blade spring, 51 a spring body, 511 upper positioning holes, 512 flat plate ends, 513 performance sections, 514 transition circular rings, 515 raised circular rings, 52 plate end reinforcing plates, 521 reinforcing plate main plates, 522 side plates, 523 end plates and 524 second bolt through holes;
6, a spring fixing support assembly, a 61 spring fixing support, a 611 boss, a 612 mounting groove, 613 lower positioning holes, 614 reinforcing ribs, 615 end lugs, 616 end lug through holes, 62 lower cushion blocks, 63 positioning pins, 64 upper cushion blocks and 65 bolts;
7 hexagonal nut and toper elastic washer sub-assembly, 8 left automobile body U-shaped support, 9 right automobile body U-shaped support.
Detailed Description
Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
According to the technical scheme, the cross blade springs replace the spiral springs, the middle parts of the cross blade springs are fixed on a vehicle body, two ends of the cross blade springs are connected with the torsion beam through the elastic body assemblies, the CTBA is limited to move in the Y direction by the elastic body assemblies, the limitation of rotation around the Z axis is limited by two original flexible positions of the two front bushings when the vehicle turns, the limitation is changed into four flexible limits formed by the two front bushings and the two rear elastic body assemblies, meanwhile, when turning force acts, the moment of the reaction force of the two rear elastic body assemblies relative to the rotation center is large, the rear outer wheel is prevented from generating rear beams, the rear inner wheel generates front beams, the vehicle turns stably, and the steering stability of the vehicle is greatly improved.
The transverse blade spring and the elastomer assembly are connected in series, so that the flexibility of the suspension is improved, the coupling friction noise is reduced, and the smoothness, the comfort and the NVH performance of the vehicle are improved.
As shown in fig. 3 to 14, the present application provides a transverse blade spring rear torsion beam suspension system, which includes a torsion beam welding assembly 1, a damper 2, a bushing 3, a transverse blade spring 5, an elastic body component, and a spring fixing bracket component 6.
As shown in fig. 3 to 6 and fig. 8 and 10, the torsion beam welding assembly 1 includes a cross beam 11, a first sleeve 12, a first trailing arm 13, a first elastomer mounting seat 14, a first hub axle support 15, a first damper bracket 16, a second sleeve 17, a second trailing arm 18, a second elastomer mounting seat 19, a second hub axle support 20, and a second damper bracket 21; according to the self section shape of the cross beam 11 and the torsion rigidity requirement of the suspension, the cross beam is fixedly connected with the middle parts of the first longitudinal arm 13 and the second longitudinal arm 18, and the cross beam is fixedly connected with the middle parts of the first longitudinal arm 13 and the second longitudinal arm 18 to form a coupling torsion beam; specifically, one end of the cross beam 11 is fixedly connected with the first trailing arm 13, and specifically, the cross beam 11 is welded with the first trailing arm 13; the other end of the beam 11 is fixedly connected with the second trailing arm 18, and specifically, the beam 11 is welded with the second trailing arm 18.
The first sleeve 11 is fixed to the front end of the first trailing arm 13, and specifically, the first sleeve 11 is welded to the front end of the first trailing arm 13; the second sleeve 17 is fixed to the front end of the second trailing arm, in particular the second sleeve 17 is welded to the front end of the second trailing arm, the first sleeve 11 and the second sleeve 17 being used for mounting the bushing 3.
The first absorber bracket 16 is fixed to the inner side of the rear portion of the first trailing arm 13, and specifically, the first absorber bracket 16 is welded to the inner side of the rear portion of the first trailing arm 13; the second absorber bracket 21 is fixed to the inner side of the rear portion of the second trailing arm 18, specifically, the second absorber bracket 21 is welded to the inner side of the rear portion of the second trailing arm 18, and the first absorber bracket 16 and the second absorber bracket 21 are U-shaped and have bolt through holes at both sides for mounting the absorber 2.
The first hub axle support 15 is fixed to the outer side of the rear portion of the first trailing arm 13, and specifically, the first hub axle support 15 is welded to the outer side of the rear portion of the first trailing arm 13 for mounting a left wheel.
The second hub axle support 20 is fixed to the outer side of the rear part of the second trailing arm 18, and specifically, the second hub axle support 20 is welded to the outer side of the rear part of the second trailing arm 18 for mounting a right wheel.
As shown in fig. 5, 6, 8 and 10, the first elastic body mount 14 is composed of a U-shaped plate 141, a circular tube 142, a first weld nut 143 and a second weld nut 144; the U-shaped plate 141 is provided with a top plate 1411 on the top, a large through hole 1412 for reducing weight is arranged in the middle, and first bolt through holes 1413 and second bolt through holes 1414 are respectively arranged at two ends and are symmetrical relative to the center line of the large through hole 1412; the round tube 142, the first weld nut 143, and the second weld nut 144 are welded to the lower surface of the top plate 1411 of the U-shaped plate 141; the center line of the circular tube 142 is collinear with the center line of the large through hole 1412; the centerline of the first weld nut 143 is collinear with the centerline of the first bolt through hole 1413, and the inner diameter of the first bolt through hole 1413 is slightly larger than the outer diameter of the thread of the first weld nut 143; the centerline of the second weld nut 144 is collinear with the centerline of the second bolt passing aperture 1414, and the inside diameter of the second bolt passing aperture 1414 is slightly larger than the outside diameter of the threads of the second weld nut 144.
In the present application, the first elastomer mount 14 and the second elastomer mount 19 have the same structure, and therefore, only the structure of the first elastomer mount 14 will be described, the first elastomer mount 14 being fixed above the rear portion of the first trailing arm 13, specifically, the first elastomer mount 14 being welded above the rear portion of the first trailing arm 13; the second elastomer mounting seat 19 is fixed above the rear part of the second trailing arm 18, and specifically, the second elastomer mounting seat 19 is welded above the rear part of the second trailing arm 18; first elastomer mount 14 and second elastomer mount 19 are each for mounting elastomer assembly 4.
The transverse leaf spring 5 comprises a spring body 51 and plate end reinforcing plates 52 at two ends of the spring body;
the spring body 51 is bilaterally symmetrical, and comprises a flat plate end 512, a performance section 513, a transition ring 514 and a raised ring 515; two upper positioning holes 511 are formed in the lower surface of the middle of the spring body 51; the flat plate end 512 has two chamfers at the outer end, and the middle part is provided with a first bolt through hole 516 for fixing the bolt 41 of the elastic body 4 and the plate end reinforcing plate 52; the performance section 513 is circular or straight and determines the rigidity of the spring body 51; the annular ridge 515 may be located away from the exhaust pipe, reducing heat radiation; the annular transition 514 is arranged between the two upper positioning holes 511 and is a transition section between the performance section 513 and the annular bulge 515
Optionally, the spring body 51 may be an FRP composite spring with an equal-width parabolic variable cross section, specifically, the spring body 51 is a fiber reinforced plastic composite spring with an equal-width parabolic variable cross section;
alternatively, the spring body 51 may be a uniform section FRP composite spring, specifically, the uniform section FRP composite spring is a spring manufactured by a continuous winding process;
alternatively, the spring body 51 can be a constant-width parabolic variable-section leaf spring, and the leaf spring does not need the plate end reinforcing plate 52.
The plate end reinforcing plate 52 is fixed on the straight plate end 512 of the spring body 51, specifically, the plate end reinforcing plate 52 is adhered on the straight plate end 512 of the spring body 51 by using an adhesive, and is used for protecting the upper surface of the end part of the FRP composite material spring, and comprises a reinforcing plate main plate 521, an end plate 523 and two side plates 522, and a second bolt through hole 524 is arranged in the center of the reinforcing plate main plate.
The main board 521, the end board 523 and the two side boards 522 of the strong board wrap the end of the spring body 51, and the first bolt through hole 516 is opposite to the second bolt through hole 524 and has collinear center lines, as shown in fig. 3 to 6 and fig. 8, 9 and 13.
The elastic body assembly 4 comprises a bolt 41, an elastic body 42, an upper plate 43 and a bottom plate 44;
the elastic body 42 is a cuboid, the elastic body grooves 421 are formed in two ends of the elastic body 42, the cuboid can increase the lateral force resisting capacity, the vulcanization area of the elastic body 42, the upper plate 43 and the bottom plate 44 is increased, the elastic body 42 is prevented from being separated from the upper plate 43 and the bottom plate 44, the grooves 421 can reduce the rigidity of the torsion beam suspension frame rotating around the Y axis, and the performance of the suspension frame is improved.
The bottom plate 44 is a rectangular sheet metal part, and is provided with flanges 441 on the periphery to increase the strength of the bottom plate 45 and facilitate vulcanization, and the bottom plate 44 is provided with two bottom plate through holes 442.
The upper plate 43 is a rectangular sheet metal part, and the middle part is provided with an upper plate through hole 433; the periphery of the upper plate flanging 431 is provided with an upper plate flanging used for increasing the vulcanization surface of the elastic body 42; both ends are provided with upper plate grooves 432 for wrapping the upper ends of the elastic body grooves 421.
The bolt 41 is provided with a threaded rod 411 and a disc frame 412, an external thread is arranged on the upper part of the threaded rod 411, the threaded rod 411 passes through an upper plate through hole 433, the disc frame 412 is tightly attached to the lower surface of the upper plate 43, and the bottom plate 44, the upper plate 43, the elastic body 42 and the lower end of the bolt 41 are vulcanized into an integral structure as shown in fig. 3, 5, 6, 8 and 11.
The spring fixing bracket assembly 6 comprises a spring fixing bracket 61, a lower cushion block 62, a positioning pin 63, an upper cushion block 64 and a bolt 65;
the spring fixing support 61 is a n-shaped forged steel part, the upper surface of the middle part is a mounting groove 612 with a groove structure, reinforcing ribs 614 are arranged on two sides of the bottom edge of the spring fixing support 61, a boss 611 extending downwards is arranged at the center, and a lower positioning hole 613 is arranged on the upper surface opposite to the boss; the spring fixing bracket 61 is provided with end lugs 615 at two ends thereof, the end lugs 615 are provided with end lug through holes 616, the lower cushion block 62, the positioning pin 63 and the upper cushion block 64 are all arranged in the mounting groove 612 of the spring fixing bracket 61, and the spring body 51 is also arranged in the mounting groove 612.
The lower pad 62 is provided with a positioning pin through hole, and the positioning pin 63 is disposed at a lower end in the lower positioning hole 613 and at an upper end in the upper positioning hole 511, as shown in fig. 3 to 5, 7, 9 and 12.
The left side and the right side of the vehicle body are respectively provided with a left vehicle body U-shaped support 8 and a right vehicle body U-shaped support 9, bolt through holes are formed in the two sides of the vehicle body U-shaped support 8 and the vehicle body U-shaped support 9, and the left side and the right side of the torsion beam welding assembly 1 are respectively connected with the vehicle body through two bushings 3, as shown in fig. 3, 4 and 14.
One end of the transverse leaf spring 5 is connected with the first longitudinal arm 13 of the torsion beam welding assembly 1 through the elastic body component 4, and the other end of the transverse leaf spring 5 is connected with the second longitudinal arm 18 of the torsion beam welding assembly 1 through the elastic body component 4, as shown in fig. 3 to 6, 8 and 11.
The spring fixing bracket assembly 6 is disposed on the transverse leaf spring 5, as shown in fig. 3 to 5.
The two bushings 3 are pressed into the first sleeve 12 and the second sleeve 17 of the torsion beam welding assembly 1, respectively, as shown in fig. 3, 4, and 14.
The bolt 41 of the elastic body component 4 passes through the first bolt through hole 516 at one end of the horizontal leaf spring 5, the elastic body component 4 is fixed at one end of the horizontal leaf spring 5 by the hexagonal nut and conical elastic washer assembly 7, the tightened hexagonal nut and conical elastic washer assembly 7 is pressed on the upper plane of the reinforcing plate main plate 521, and the elastic body component 4 is fixed at the other end of the horizontal leaf spring 5 by the hexagonal nut and conical elastic washer assembly 7, as shown in fig. 3 to 6, 8, 11 and 13.
Two bolts pass through the bottom plate through holes 442 of the elastic body component 4 and are screwed into the first weld nut 143 and the second weld nut 144 in the first elastic body mounting seat 14 of the torsion beam welding assembly 1, respectively, and the two bolts fix one elastic body component 4 on the first trailing arm 13 of the torsion beam welding assembly 1, and similarly fix the other elastic body component 4 on the second trailing arm 18 of the torsion beam welding assembly 1, thereby completing the mounting of the two ends of the transverse leaf spring 5, as shown in fig. 3 to 6, 8 and 11.
Bolts respectively pass through bolt through holes of the left vehicle body U-shaped support 8 positioned on the left side of the vehicle body and through center holes of the bushings 3 in the first bushings 12, and are fixed by nuts, so that the first longitudinal arm 13 of the torsion beam welding assembly 1 is connected to the vehicle body, and similarly, the bolts respectively pass through bolt through holes of the right vehicle body U-shaped support 9 positioned on the right side of the vehicle body and through center holes of the bushings 3 in the second bushings 17, and are fixed by nuts, so that the second longitudinal arm 18 of the torsion beam welding assembly 1 is connected to the vehicle body, as shown in fig. 14.
Firstly, two upper cushion blocks 64 are adhered to the upper surface of the spring body 51 and are respectively positioned right above upper positioning holes 511 of the spring body 51, positioning pins 63 are pressed into lower positioning holes 613 of the spring fixing supports 61, the positioning pins 63 penetrate through positioning pin through holes of the lower cushion blocks 62, the lower surfaces of the lower cushion blocks 62 are adhered to the upper plane of the middle part of the spring fixing supports 61, then one spring fixing support assembly 6 is fixed on the vehicle body by two bolts 65, and similarly, the other spring fixing support assembly 6 is fixed on the vehicle body, as shown in fig. 3, 4, 5, 7, 9 and 12.
The lower ends of the two shock absorbers 2 are respectively mounted on the first shock absorber support 16 and the second shock absorber support 21 by bolts and nuts, and the upper ends of the two shock absorbers 2 are respectively fixed on the vehicle body by bolts, so that the mounting of the technical scheme is completed, as shown in fig. 3, 4 and 10.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications thereof. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (4)
1. The rear torsion beam suspension system of the transverse blade spring is characterized by comprising a torsion beam welding assembly, a shock absorber, a bushing, a transverse blade spring, an elastic body component and a spring fixing support component;
the left side of the front end of the torsion beam welding assembly is connected with a left vehicle body U-shaped support on the left side of a vehicle body through one bushing, and the right side of the front end of the torsion beam welding assembly is connected with a right vehicle body U-shaped support on the right side of the vehicle body through the other bushing;
the lower ends of the two vibration dampers are respectively arranged on the left side and the right side of the torsion beam welding assembly, and the upper ends of the vibration dampers are respectively fixed on the vehicle body;
one end of the transverse blade spring is connected with the left side of the torsion beam welding assembly through one elastomer component, and the other end of the transverse blade spring is connected with the right side of the torsion beam welding assembly through the other elastomer component;
the spring fixing support assembly is arranged on the transverse blade spring;
the torsion beam welding assembly comprises a cross beam, a first sleeve, a first longitudinal arm, a first elastic body mounting seat, a first hub shaft support, a first shock absorber support, a second sleeve, a second longitudinal arm, a second elastic body mounting seat, a second hub shaft support and a second shock absorber support;
the middle parts of the first trailing arm and the second trailing arm are fixedly connected through the cross beam;
the first sleeve is fixed at the front end of the first longitudinal arm, and the second sleeve is fixed at the front end of the second longitudinal arm;
the first damper bracket is fixed to the inner side of the rear part of the first trailing arm, and the first hub axle support is fixed to the outer side of the rear part of the first trailing arm;
the second shock absorber support is fixed on the inner side of the rear part of the second trailing arm, and the second hub shaft support is fixed on the outer side of the rear part of the second trailing arm;
the first elastomer mounting seat is fixed above the rear part of the first trailing arm, and the second elastomer mounting seat is fixed above the rear part of the second trailing arm;
the transverse blade spring comprises a spring body and plate end reinforcing plates at two ends of the spring body;
the spring body is bilaterally symmetrical and comprises a straight plate end, a performance section, a transition ring and a raised ring; two upper positioning holes are formed in the lower surface of the middle of the spring body, and the upper positioning holes are blind holes;
the end of the flat plate is a straight plate, the outer end of the flat plate is provided with two chamfers, and the middle part of the flat plate is provided with a first bolt through hole;
the performance section is in a circular ring shape or a straight plate shape;
the transition ring and the raised ring are arranged between the two upper positioning holes, and the transition ring is used for transition between the performance section and the raised ring;
the spring body is an equal-width parabolic variable-section FRP composite material spring, an equal-section FRP composite material spring or an equal-width parabolic variable-section steel plate spring;
the plate end reinforcing plate is fixed on the flat plate end and comprises a reinforcing plate main plate, an end plate and two side plates, and a second bolt through hole is formed in the center of the reinforcing plate main plate;
when the spring body is an equal-width parabolic variable-section FRP composite spring or an equal-section FRP composite spring, the reinforcing plate main plate, the end plate and the two side plates wrap the flat plate end; when the spring body is an equal-width parabolic variable-section steel plate spring, the flat plate end is not provided with the plate end reinforcing plate;
the center line of the first bolt through hole is collinear with the center line of the second bolt through hole;
one elastomer assembly is arranged between the first elastomer mounting seat and the left end of the transverse leaf spring, and the other elastomer assembly is arranged between the second elastomer mounting seat and the right end of the transverse leaf spring;
the elastic body assembly comprises a bottom plate, an elastic body, a bolt and an upper plate;
the elastic body is a cuboid, and elastic body grooves are formed in two ends of the elastic body;
the periphery of the bottom plate is provided with a flanging, and the bottom plate is provided with two bottom plate through holes;
the upper plate is rectangular, an upper plate through hole is formed in the center of the upper plate, flanges are arranged on the periphery of the upper plate through hole, upper plate grooves are formed in the two ends of the upper plate through hole, and the upper ends of the elastic body grooves are wrapped by the upper plate grooves;
the bolt penetrates through the upper plate through hole;
the bottom plate, the upper plate, the elastic body and the lower end of the bolt are vulcanized into an integral structure.
2. The behind torsion beam suspension system of claim 1, wherein said first elastomeric mount comprises a U-shaped plate, a round tube, a first weld nut, and a second weld nut;
the U-shaped plate comprises a top plate and side plates at two sides, and a first bolt through hole, a second bolt through hole and a large through hole positioned in the middle of the top plate are formed in the top plate;
the first welding nut and the second welding nut are fixed on the lower surface of the top plate and correspond to the first bolt through hole and the second bolt through hole one by one respectively, and the outer diameters of the first bolt through hole and the second bolt through hole are slightly larger than the diameters of the outer threads of the first welding nut and the second welding nut;
the upper end of the circular tube is relatively coaxial with the large through hole and is fixed on the lower surface of the top plate, and the lower end of the circular tube and the lower ends of the two side plates are fixed on the first longitudinal arm.
3. The cross leaf spring rear torsion beam suspension system of claim 2, wherein the first elastomeric mount is identical in structure to the second elastomeric mount.
4. The cross leaf spring rear torsion beam suspension system of claim 1, wherein the spring fixing bracket assembly comprises a spring fixing bracket, a lower pad, a positioning pin, an upper pad and a bolt;
the spring fixing support is in a shape like a Chinese character 'ji', reinforcing ribs are arranged on two sides of the bottom edge of the spring fixing support, a boss extending downwards is arranged in the center of the spring fixing support, a lower positioning hole is arranged on the upper surface opposite to the boss, and the lower positioning hole is a blind hole; end lugs are arranged at two ends of the base, and end lug through holes are formed in the end lugs;
the lower cushion block is provided with a positioning pin through hole, the lower end of the positioning pin is arranged in the lower positioning hole, and the upper end of the positioning pin is arranged in the upper positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544964.7A CN109703317B (en) | 2018-12-17 | 2018-12-17 | Transverse leaf spring rear torsion beam suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544964.7A CN109703317B (en) | 2018-12-17 | 2018-12-17 | Transverse leaf spring rear torsion beam suspension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109703317A CN109703317A (en) | 2019-05-03 |
| CN109703317B true CN109703317B (en) | 2022-06-03 |
Family
ID=66256817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544964.7A Active CN109703317B (en) | 2018-12-17 | 2018-12-17 | Transverse leaf spring rear torsion beam suspension system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109703317B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055645B (en) * | 2019-12-31 | 2021-09-03 | 浙江金驰汽车有限公司 | Automobile suspension structure and suspension method |
| CN111267575B (en) * | 2020-03-27 | 2021-10-29 | 东风汽车集团有限公司 | Torsion beam limiting block structure and limiting system |
| DE102020207153A1 (en) * | 2020-06-08 | 2021-12-09 | Volkswagen Aktiengesellschaft | X-spring device for a motor vehicle wheel suspension |
| KR102642945B1 (en) * | 2021-12-28 | 2024-03-05 | 현대제철 주식회사 | leaf spring for vehicle and vehicle suspension structure using the same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007153047A (en) * | 2005-12-02 | 2007-06-21 | Toyota Motor Corp | Beam type suspension |
| DE102007051470A1 (en) * | 2007-10-27 | 2009-04-30 | Bayerische Motoren Werke Aktiengesellschaft | Torsion beam axle for double-track vehicle, has bearing spring element designed as transverse leaf spring that extends along vehicle transverse direction, and is supported and hinged at wheel trunk under force effect along vehicle direction |
| CN102887042A (en) * | 2012-09-26 | 2013-01-23 | 柳州孔辉汽车科技有限公司 | Independent front suspension with transversely arranged steel plate spring |
| CN103085621A (en) * | 2011-10-17 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Wheel suspension device for a motor vehicle |
| DE202013103900U1 (en) * | 2013-08-28 | 2013-09-16 | Ford Global Technologies, Llc | Leaf spring bearing and vehicle wheel suspension for a vehicle with transverse leaf spring |
| CN207902072U (en) * | 2018-01-02 | 2018-09-25 | 北京汽车股份有限公司 | Torsion beam suspension and vehicle with it |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204226523U (en) * | 2014-11-13 | 2015-03-25 | 安徽江淮汽车股份有限公司 | A kind of steel plate spring assembly of MPV car and automobile |
| DE102014224684A1 (en) * | 2014-12-03 | 2016-06-09 | Zf Friedrichshafen Ag | Axle |
| CN204845413U (en) * | 2015-08-07 | 2015-12-09 | 安徽江淮汽车股份有限公司 | Buffer block assembly |
-
2018
- 2018-12-17 CN CN201811544964.7A patent/CN109703317B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007153047A (en) * | 2005-12-02 | 2007-06-21 | Toyota Motor Corp | Beam type suspension |
| DE102007051470A1 (en) * | 2007-10-27 | 2009-04-30 | Bayerische Motoren Werke Aktiengesellschaft | Torsion beam axle for double-track vehicle, has bearing spring element designed as transverse leaf spring that extends along vehicle transverse direction, and is supported and hinged at wheel trunk under force effect along vehicle direction |
| CN103085621A (en) * | 2011-10-17 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Wheel suspension device for a motor vehicle |
| CN102887042A (en) * | 2012-09-26 | 2013-01-23 | 柳州孔辉汽车科技有限公司 | Independent front suspension with transversely arranged steel plate spring |
| DE202013103900U1 (en) * | 2013-08-28 | 2013-09-16 | Ford Global Technologies, Llc | Leaf spring bearing and vehicle wheel suspension for a vehicle with transverse leaf spring |
| CN207902072U (en) * | 2018-01-02 | 2018-09-25 | 北京汽车股份有限公司 | Torsion beam suspension and vehicle with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109703317A (en) | 2019-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109703317B (en) | Transverse leaf spring rear torsion beam suspension system | |
| US7566063B2 (en) | Wheel suspension system | |
| EP2355987B1 (en) | Vehicle independent suspension | |
| KR100319580B1 (en) | Front suspension | |
| KR102387695B1 (en) | Vehicle suspension | |
| EP0083182A2 (en) | Rear wheel suspension | |
| US20120043736A1 (en) | Suspension device | |
| CN203186026U (en) | Novel MPV rear independent suspension system | |
| US20060033298A1 (en) | Vehicle suspension with improved radius arm to axle attachment | |
| CN109484116B (en) | Torsion beam axle suspension assembly | |
| CN113232469A (en) | Front suspension system and vehicle | |
| CN110481255B (en) | Rear wheel suspension device and automobile | |
| KR102586324B1 (en) | Suspension system for vehicle | |
| KR102563433B1 (en) | Suspension system for vehicle | |
| CN109484118B (en) | Composite material spring CTBA suspension system | |
| JP5057434B2 (en) | Suspension device | |
| CN112706572A (en) | Rear independent suspension system and vehicle | |
| CN109484119B (en) | Coupled torsion beam bridge type suspension system | |
| CN109484117B (en) | Composite material spring torsion beam axle suspension assembly | |
| KR20080052078A (en) | Coupled torsion beam axle suspension of a vehicle | |
| CN111376668A (en) | Transverse leaf spring suspension | |
| CN219263053U (en) | Rear suspension torsion beam fork rod bushing | |
| CN213892085U (en) | Multi-link type rear suspension and vehicle | |
| CN220332409U (en) | Independent suspension behind vehicle and vehicle | |
| EP3738801A1 (en) | Rear suspension system for a vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |