CN209257814U - A kind of vehicle and its torsion beam rear axle - Google Patents

Abstract

The utility model discloses a kind of torsion beam rear axle, including torsion beam, torsion beam is hollow structure, and the middle part in torsion beam axial direction is that protuberance, the flexible element to absorb vibration, the both ends of torsion beam are located at sustained height and are below middle part upwards.In torsion beam rear axle provided by the utility model, torsion beam can generate certain flexible deformation during vehicle is reversed and is impacted, and then absorb vibration caused by torsion and impact, improve the comfort of vehicle.And the intensity of hollow structure is higher than solid construction, and torsion beam is hollow structure, can be improved the intensity of torsion beam, avoids it that fatigue fracture occurs.The invention also discloses a kind of vehicle including above-mentioned torsion beam rear axle, comforts with higher.

Description

A kind of vehicle and its torsion beam rear axle

Technical field

The utility model relates to equipment technology field of transport, in particular to a kind of torsion beam rear axle.The utility model also relates to And a kind of vehicle including above-mentioned torsion beam rear axle.

Background technique

Torsion beam rear axle mainly includes the torsion beam positioned at middle part, the wheel positioned at two sides trailing arm beam and with the welding of trailing arm beam Hub holder.For hub bracket for being connected with wheel, torsion beam is the main body of whole rear axle connection stress.Process of the vehicle in traveling In, wheel is constantly reversed and is impacted, and it reverses and impacts vehicle body is transferred to by torsion beam, therefore, the rigidity and vehicle of torsion beam Comfort it is closely related.The girder steel of the generally-straight type of torsion beam in the prior art, rigidity is larger, leads to vehicle Comfort is poor.If the rigidity of torsion beam is too small and it can be made to be easy to happen fatigue fracture.

In conclusion how to improve the comfort of vehicle under the premise of guaranteeing the rigidity of torsion beam is those skilled in the art Member's technical problem urgently to be solved.

Utility model content

The purpose of the utility model is to provide a kind of torsion beam rear axle, torsion beam is hollow the scratching of axial upper middle part protuberance Property part, can be improved the comfort of vehicle under the premise of the rigidity of guarantee.The another object of the utility model is to provide one kind Vehicle including above-mentioned torsion beam rear axle.

To achieve the above object, the utility model provides a kind of torsion beam rear axle, including torsion beam, during the torsion beam is Hollow structure, the middle part in the torsion beam axial direction are protuberance, the flexible element to absorb vibration upwards, the both ends position of the torsion beam In sustained height and it is below middle part.

Preferably, the torsion beam in a tubular form, in the middle part of downside punching press grooving.

Preferably, the medial surface of the two sides up and down in the middle part of the torsion beam fits.

Preferably, the both ends of the torsion beam are fixedly connected with two trailing arm beams respectively.

Preferably, the end of the trailing arm beam is equipped with the wheel hub mounting bracket to install wheel hub.

Preferably, the torsion beam is stamping forming round steel pipe.

Preferably, the torsion beam is the structural member that Shot Blasting is carried out after high-frequency quenching and tempering.

The utility model additionally provides a kind of vehicle, including torsion beam rear axle described in any one of the above.

It includes torsion beam that the utility model, which provides a kind of torsion beam rear axle, and the middle part in torsion beam axial direction is swelled upwards, from And certain amount of deflection is made it have, the both ends of torsion beam are located at sustained height and are below middle part, the both ends phase of wheel and torsion beam Even, for vehicle during being reversed and being impacted, torsion beam can generate certain flexible deformation, and then absorb torsion and punching Generated vibration is hit, the comfort of vehicle is improved.It is well known that the intensity of hollow structure is higher than solid construction, torsion beam is Hollow structure, and then the intensity of torsion beam is improved, avoid it that fatigue fracture occurs.

The utility model additionally provides a kind of vehicle including above-mentioned torsion beam rear axle, comfort with higher.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is the structural schematic diagram of torsion beam rear axle provided by the utility model；

Fig. 2 is the structure chart of torsion beam.

Wherein, the appended drawing reference in Fig. 1 and Fig. 2 are as follows:

Torsion beam 1, trailing arm beam 2, wheel hub mounting bracket 3.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically The utility model is described in further detail for embodiment.

Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the structural schematic diagram of torsion beam rear axle provided by the utility model；Fig. 2 is to turn round The structure chart of power beam.

Torsion beam rear axle provided by the utility model, as shown in Figure 1, the middle part of torsion beam rear axle is torsion beam 1, torsion Beam 1 in the axial direction on middle part swell upwards.In other words, the two sides of 1 perpendicular bisector of torsion beam are bent downwardly, and make torsion beam 1 is arched.Since torsion beam 1 has certain amount of deflection, when vehicle is reversed and is impacted, torsion beam 1 can generate elastic change Shape plays buffer function to torsion and impact.In addition, the both ends of torsion beam 1 are located at sustained height, entire torsion beam 1 is about it Perpendicular bisector is symmetrical.The high user that torsion beam 1 is swelled, which can according to need, to be configured, it is not limited here.

For the intensity for guaranteeing torsion beam 1, hollow structure is used.It the cross section of specific torsion beam 1 can be in Open Side Down Contraband font, domes or opening towards vertical direction I-shaped structure.Above structure is able to bear compared to solid construction Bigger shear stress, and then improve the intensity of torsion beam 1.

In the present embodiment, torsion beam 1 is arched in the axial direction, is produced in torsion and impact process to can absorb Raw vibration improves the comfort of vehicle.In addition, the cross section of torsion beam 1 is in hollow structure, increase its intensity from structure, Avoid it that fatigue fracture occurs.

Optionally, torsion beam 1 in a tubular form, by facing upward punching press to the downside in the middle part of it, makes its downside generate bending, To form groove-like structure in its downside.Fig. 2 is structural schematic diagram when looking up torsion beam 1 by down, groove-like structure Cross section is domed, and torsion beam 1 can be made to bear bigger shear stress.In addition, the inside of the two sides up and down at 1 middle part of torsion beam Face fits after punching press.When deformation occurs for the upside of torsion beam 1, downside can form upside and support, and then improve Its intensity.And the two is bonded to each other can also reduce the noise that torsion beam 1 is issued.

Specifically, torsion beam 1 is made of round steel pipe punch forming.In process, pressure is applied to the middle part of one side, So that the side is recessed to side corresponding thereto, and then the medial surface of two sides is made to fit.It then further presses on, makes to justify Steel pipe generates ridge structure.Certainly, user can also first heat round steel pipe, and then the side punching press of its opposite recess, makes The side generates groove-like structure.

Its intensity after punching press of torsion beam 1 can be declined, and the intensity of torsion beam 1 can be improved through Overheating Treatment.Tool Body, high-frequency quenching is carried out to torsion beam 1 first, quenching can be improved the hardness of torsion beam 1, and then improve its intensity.Quenching Afterwards to eliminate its remaining thermal stress, tempering is carried out to it.Shot Blasting is carried out to its surface after tempering, removes its surface Rusty stain, improve its surface smoothness.The metallographic structure that needs can be obtained by being heat-treated, makes torsion beam 1 reach enough Hardness meets the service life of torsional fatigue.By adjusting heat treatment hardness and forming shape, torsion beam rear axle rigidity tune can satisfy The requirement of section.

In the present embodiment, the hole torsion beam 1 in torsion beam rear axle is compared, full after Overheating Treatment with tradition torsion beam Sufficient same load requires that pts wt 15% or so can be reduced under fatigue life requirements.It can be saved on fuel-engined vehicle It can emission reduction.Mileage can be increased used in new-energy automobile with loss of weight.

As shown in Figure 1, the both ends of torsion beam 1 are welded and fixed with two trailing arm beams 2 respectively, the symmetrical configuration of two trailing arm beams 2.It is vertical The end of arm beam 2 is equipped with wheel hub mounting bracket 3, and wheel hub mounting bracket 3 is welded and fixed by a plurality of dowel with trailing arm beam 2.Tool Body, wheel hub mounting bracket 3 and dowel are an integral molding structure part, generate and a plurality of extend after the stamped molding of plate outward Interconnecting piece, interconnecting piece is bent to form dowel to side, and the rear end of dowel and trailing arm beam 2 is welded and fixed.

In the present embodiment, torsion beam 1 is welded and fixed with trailing arm beam 2 again after forming, and can reduce the residual stress between the two, Stress is avoided to concentrate.Wheel hub mounting bracket 3 is welded and fixed by a plurality of dowel with trailing arm beam 2, its bonding strength is improved.

The utility model additionally provides a kind of vehicle, the torsion beam rear axle including any one of the above；Vehicle other parts Structure can refer to the prior art, details are not described herein.

It should be noted that in the present specification, such as first and second etc relational terms are used merely to one Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual Relationship or sequence.

Vehicle provided by the utility model and its torsion beam rear axle are described in detail above.It is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage Solve the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not Under the premise of being detached from the utility model principle, several improvements and modifications can be made to this utility model, these improve and repair Decorations are also fallen into the protection scope of the utility model claims.

Claims (8)

1. a kind of torsion beam rear axle, which is characterized in that including torsion beam (1), the torsion beam (1) is hollow structure, the torsion Middle part in power beam (1) axial direction is that protuberance, the flexible element to absorb vibration, the both ends of the torsion beam (1) are located at same upwards Highly and it is below middle part.

2. torsion beam rear axle according to claim 1, which is characterized in that the torsion beam (1) in a tubular form, in the middle part of under Side punching press grooving.

3. torsion beam rear axle according to claim 2, which is characterized in that two sides up and down in the middle part of the torsion beam (1) Medial surface fits.

4. according to claim 1 to torsion beam rear axle described in 3 any one, which is characterized in that the both ends of the torsion beam (1) It is fixedly connected respectively with two trailing arm beams (2).

5. torsion beam rear axle according to claim 4, which is characterized in that the end of the trailing arm beam (2) is equipped with to pacify Fill the wheel hub mounting bracket (3) of wheel hub.

6. torsion beam rear axle according to claim 4, which is characterized in that the torsion beam (1) is stamping forming round steel Pipe.

7. torsion beam rear axle according to claim 6, which is characterized in that the torsion beam (1) is through high-frequency quenching and to return The structural member of Shot Blasting is carried out after fire.

8. a kind of vehicle, which is characterized in that including torsion beam rear axle described in claim 1 to 7 any one.