CN201068076Y - Twisting beam and suspension with the same - Google Patents
Twisting beam and suspension with the same Download PDFInfo
- Publication number
- CN201068076Y CN201068076Y CNU2007201516376U CN200720151637U CN201068076Y CN 201068076 Y CN201068076 Y CN 201068076Y CN U2007201516376 U CNU2007201516376 U CN U2007201516376U CN 200720151637 U CN200720151637 U CN 200720151637U CN 201068076 Y CN201068076 Y CN 201068076Y
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- turning round
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Abstract
The utility model provides a torsion beam, the cross section of the torsion beam is composed of a plurality of U shapes with different sizes, the U shapes is stacked in an identical direction way and a smaller U shape is positioned in a larger U shape, the end parts of the U shapes are mutually connected and hollow parts are provided among adjacent U shapes. The utility model also provides a suspending frame, the suspending frame comprises the torsion beam, an elastic system and a vibration damping system; wherein, both the elastic system and the vibration damping system are connected on the torsion beam, wherein, the torsion beam is the above torsion beam provided by the utility model. The torsion beam of the utility model has higher bending rigidity, thereby having longer service life.
Description
Technical field
The utility model relates to a kind ofly to be turned round beam and has a suspension that this turns round beam.
Background technology
Beam is widely used in each industrial circle, and as bridge, building, engineering goods etc., in general, beam structurally plays supporting and interconnect function, is used to strengthen integrally-built contact, guarantees the globality of structure.
And for the beam that is applied in the power machine (as automobile), except the above-mentioned functions effect, to transmit various twist moments toward contact, thereby require beam not only to have enough rigidity, also to have certain flexibility, so that this beam can normally be worked, can guarantee the transmission of moment, can guarantee the fastness of structural entity again.Thereby, for the beam that above-mentioned requirements is arranged, be usually designed to the U type cross section that twists easily, thereby satisfy the requirement that beam transmits twist moment, this when playing a supporting role, the beam that also is used for transfer torque generally is also referred to as turns round beam.
Existing turn round the cross section that beam has and be generally wide single U type structure.Though this structure can be transmitted twist moment well, but it is big or when being subjected to impacting when turning round the beam load, turn round Liang Haiyao and bear bigger flexure stress, and owing to the bending stiffness of turning round beam with wide single U type cross section is limited, thereby it is shorter that this kind of working in bearing the heavier occasion of flexure stress turned round the beam work life.
For the suspension in the vehicle, as shown in Figure 1, generally comprise and turn round beam 1, elastic system and vibration insulating system (not shown), wherein, two ends turning round beam 1 have a pair of trailing arm 2 respectively, trailing arm 2 is along the vehicle body longitudinal extension, and the front end 3 of trailing arm 2 is supported in the vehicle body (not shown), and the rear end 4 of trailing arm 2 is supported in the wheel (not shown).When vehicle in driving process, turn round beam when supporting vehicle body, also want can be between wheel and vehicle body transfer torque, thereby thereby the cross-sectional plane of turning round beam 1 be generally to twist easily and be convenient to wide single U type structure of transfer torque, as shown in Figure 2.
When vehicle in driving process, especially be applied with than heavy load, sharply turning, when colliding suddenly with the ground protrusion, turn round the effect that beam 1 is subjected to bigger flexure stress, the downside of turning round beam 1 is subjected to the effect of tensile stress, make and turn round beam and occur bending and deformation, and the effect of upside compression chord, thereby the downside of turning round beam often at first occurs destroying than upside.Thereby, require to turn round beam 1 usually and have enough bending stiffnesies.And that existing suspension limited major cause in service life just is to turn round the bending stiffness of beam 1 is limited.
The utility model content
The purpose of this utility model be for overcome existing have wide single U type cross section turn round the limited defective of beam bending stiffness, and provide a kind of beam of turning round with strong bending stiffness.Another purpose of the present utility model is to overcome existing suspension limited defective in service life, and a kind of suspension that has than the long life is provided.
The utility model provides a kind of beam of turning round, the described cross-sectional plane of turning round beam is made up of a plurality of U types that vary in size, described a plurality of U type stacks in the same way and less U type is positioned at bigger U type, the end of described a plurality of U types be connected to each other and adjacent U type between have hollow space.
The utility model also provides a kind of suspension, and described suspension comprises turns round beam, elastic system and vibration insulating system, and described elastic system and vibration insulating system all are connected in the described beam of turning round, and wherein, describedly turns round the above-mentioned beam of turning round that beam the utility model provides.
According in the strength of material about the theory of computation of bending normal stresses, for the beam of stress by bending, EI
ZThe bending stiffness that is called beam, this parameter are to weigh the physical quantity of beam opposing crooked deformability, and wherein, E is the modulus of elasticity of material, I
ZBe the moment of inertia of cross-sectional plane to neutral axis.
According to formula I
z=∫
Ay
2d
A(y is the research layer distance with neutral line) as can be known, I
ZDepend on two factors: the research layer is far away more apart from the distance of neutral line, then I
ZBig more; The sectional area of research layer is big more, then I
ZAlso big more.
For the beam of turning round of the present utility model, this shape of cross section of turning round beam is the nested U type with hollow space, if the cross-sectional area of turning round beam of maintenance suspension of the present utility model is identical with the cross-sectional area that tradition is turned round beam, the size of turning round beam that then must make suspension of the present utility model is greater than traditional beam of turning round, like this, turning round in the utility model increased the ultimate range between research layer and the neutral line the beam, thereby makes this turn round the I of beam
ZIncrease, bending stiffness is strengthened; If keep the size of turning round beam of the utility model suspension and tradition to turn round the measure-alike of beam, then near the material the neutral line is removed, thereby obtained stock utilization preferably, reduced manufacturing cost.
According to the suspension that the utility model provides, because this is turned round beam and has such shape of cross section, the beam of turning round of the traditional suspension identical with cross-sectional area is compared, and this is turned round beam and has relatively large bending stiffness, thereby is improved the service life of this suspension.
Description of drawings
Fig. 1 is the scheme drawing of existing suspension;
Fig. 2 is the section drawing of turning round beam along Fig. 1 center line B-B intercepting;
The scheme drawing of the suspension that Fig. 3 provides for the utility model;
Fig. 4 turns round the section drawing of beam along Fig. 3 center line A-A for what the utility model provided;
Fig. 5 is another scheme drawing of suspension among Fig. 3.
The specific embodiment
Below, with reference to the accompanying drawings the specific embodiment of the present utility model is described.Because that uses in the suspension that provides of the utility model turns round beam as what the utility model provided, thereby, hereinafter, to be described in detail turning round beam in conjunction with suspension, but those of ordinary skills should be understood that, the beam of turning round that the utility model provides is not limited to be applied in the suspension of vehicle, but can be applied in any identical or similar workplace.
The cross-sectional plane of turning round beam that the utility model provides is made up of a plurality of U types that vary in size, and described a plurality of U types stack in the same way and less U type is positioned at bigger U type, the end of described a plurality of U types be connected to each other and adjacent U type between have hollow space.
Like this, turning round beam with the tradition with same cross-sectional area compares, the beam of turning round in the utility model has bigger bending stiffness (turning round beam with the tradition with same size compares, this turns round beam under the prerequisite that does not reduce bending stiffness, saved material, improved the degree of utilization of material, thereby reduced manufacturing cost).
As shown in Figure 4, for the ease of turning round the processing and manufacturing of beam, in the preferred case, the described U type 3 of turning round beam is made of two U types, comprise outer U type 5 and size interior U type 6 less than this outer U type 5, in described U type 6 be positioned at described outer U type 5 and described U type 6 identical with the opening direction of outer U type 5, the end of described interior U type 6 and outer U type 5 is connected by connecting bridge 7, has hollow space 8 between U type 5 and the interior U type 6 outside described.
Here alleged U type, and the shape of nonessential and letter U is identical, but for the U type or be similar to U type shape and get final product.
A pair of U type 3 comprises larger-size outer U type 5 and the less interior U type 6 of size, and interior U type 6 places in the outer U type 5, and the two keeps opening direction identical, as shown in Figure 4, is equivalent to two U types and is superimposed.The open side of described outer U type 5 and interior U type 6 interconnects by connecting bridge 7, has the gap between U type 5 and the interior U type 6 outside, like this, is limited by outer U type 5, interior U type 6 and connecting bridge 7 and to form hollow space 8.
By above theoretical analysis according to strength of material as can be known, compare with the cross sectional shape of traditional suspension with same cross-sectional area, the cross sectional shape that the utility model provides is a hollow structure, increased the distance between research layer and the neutral line, thereby the beam of turning round that the utility model is provided has bigger bending stiffness EI
Z
The beam of turning round for U type cross-sectional plane, the distance of U type open side and this U type centre of form is greater than the distance of U type closed side and this U type centre of form, thereby, by contrast, the bending stiffness of the open side of U type is greater than the bending stiffness of U type closed side, therefore, has being suspended in of U type cross-sectional plane and makes the U type under the installing condition usually Open Side Down, thereby make the open side of U type bear action of pulling stress, and action of compressive stress is born in the closed side morely morely.
Described outer U type 5 can have identical width with hollow space 8 between the interior U type 6, also can have not wide width; The wall thickness of outer U type 5 or interior U type 6 also can be wide structure, also can become big gradually to open side for the closed side from U type 3.These can be selected in design process according to concrete application scenario.
In order further to increase the bending stiffness of turning round beam of the suspension that the utility model provides, in the preferred case, the width of described hollow space 8 broadens to the open side of described U type gradually from the closed side of described U type.
As shown in Figure 4, one side of a pair of U type 3 is the closed side, opposite side is an open side, because hollow space 8 is less at the width of closed side, and bigger at the width of open side, like this, turn round under the identical condition of beam cross-sectional area with tradition satisfied, must make the shape of cross section (a pair of U type) of turning round beam of the present utility model have bigger size, thereby make the open side of described a pair of U type 3 and the distance of neutral line become big, make this turn round the I of beam section
ZBecome big, turn round the bending stiffness of beam, especially the open side of U type (because this open side is bigger apart from the distance of neutral line) thereby strengthened this.
Have the intensity that is more or less the same in order to ensure interior U type 6 and outer U type 5, preferably, outer U type 5 is 0.5-2 with the ratio of the wall thickness of interior U type 6, more preferably 1 (that is, outer U type is identical with the wall thickness of interior U type).
In order to turn round under the prerequisite of beam rigidity satisfied the raising, guarantee to turn round beam and have enough intensity, under the preferable case, the width of hollow space 8 maximums is 1-2.5 with the ratio of the wall thickness of outer U type 5, more preferably 2, promptly the width of the maximum of hollow space 8 is 2 times of outer U type wall thickness.
Be positioned at parallelly when turning round torsional interaction on beam 1 perpendicular longitudinally when turning round beam 1, shape of cross section is that the beam 1 of turning round of U type is preferably the U type with wide opening, like this, can resist the flecition of moment of torsion to the full extent.Yet, in the driving process of vehicle, the plane that acts on the moment of torsion place of turning round on the beam 1 often becomes less angle with the perpendicular longitudinally of turning round beam 1, like this, have the turning round beam 1 and can not adapt to this situation of U type cross section of wide opening, thereby under the effect of crooked moment of torsion, occur defective earlier easily.
Therefore, in the preferred case, in order to adapt to above-mentioned situation better, the A/F of described U type 3 becomes big from the closed side of this U type gradually to open side.
As shown in Figure 4, the cross sectional shape (U type 3) of turning round beam 1 is not wide structure, be that distance between two limits of U type 3 becomes big gradually from the closed side to the open side, like this, have turning round beam 1 and can being adapted to act on the torsional interaction of turning round beam on the Different Plane of this shape of cross section, and have simultaneously long service life.In the preferred case, the angle between the both sides of described U type 3 is 5 °-60 °, more preferably 45 °.
Turn round the open side of beam 1 and bear tensile stress morely, and compression effort is born in the closed side morely, thereby the connecting bridge 7 that is used to connect outer U type 5 open side and interior U type 6 open side will have sufficient intensity, therefore, connecting bridge 7 will have enough thickness, in the preferred case, as shown in Figure 4, the thickness H2 of described connecting bridge 7 is greater than the thickness H1 of described a pair of U type 3 closed sides, in other words, the thickness of described connecting bridge 7 is greater than the wall thickness sum of U type in described 6 and outer U type 5.Like this, can satisfy the requirement of connecting bridge 7 for rigidity and intensity, connecting bridge 7 reliably and firmly links together outer U type 5 with interior U type 6, thereby guarantees the bulk strength of a pair of U type 3.
In order further to strengthen the intensity of turning round beam 1, in the preferred case, as shown in Figure 5, turn round beam 1 and also comprise brace panel 9, the lateral edges of described brace panel 9 is fixed in described U type 3 both sides of turning round beam 1, thereby to having the effect that beam 1 plays reinforcing, strengthens of turning round of U type cross sectional shape.Brace panel 9 can be arranged on a plurality of positions of turning round beam 1 as required, preferably is arranged on stressed bigger end.
The utility model provides turns round beam and can obtain by multiple manufacture method, as internal high pressure forming technology.
The utility model also provides a kind of suspension, this suspension comprises turns round beam 1, elastic system and vibration insulating system (not shown), described elastic system and vibration insulating system are connected in the described beam 1 of turning round, wherein, elastic system act as the impact of buffering to automobile body, the effect of vibration insulating system is that the vibration of generation is decayed rapidly, thereby improves traveling comfort by bus, elastic system commonly used has steel spring, gas spring etc., and vibration insulating system commonly used has cylinder type damper, inflatable vibration damper etc.For the suspension system of different vehicles, there are various elastic system and vibration insulating system available, for well known to those of ordinary skill in the art.
As shown in Figure 3, turn round beam 1 and also comprise a pair of trailing arm 2, this trailing arm 2 is positioned at the two ends of turning round beam 1, for for simplicity, only shown the left end of turning round beam 1 among Fig. 3, the front end of trailing arm 2 can be supported in the vehicle body (not shown) by rubber bush, and the rear end of trailing arm 2 is supported in the wheel (not shown).Like this, suspension is realized being connected of vehicle body and wheel.Being connected to of trailing arm and wheel and vehicle body is well known to those of ordinary skill in the art.Trailing arm 2 can be made with turning round beam integral body, also can be anchored on the end of turning round beam by the method for welding.
According to the suspension that the utility model provides, the shape of cross section of turning round beam of this suspension is have hollow space nested double-U-shaped, if the cross-sectional area of turning round beam that keeps suspension of the present utility model is identical with traditional cross-sectional area of turning round beam, then makes this turn round the I of beam
ZIncrease, bending stiffness is strengthened; If keep the size of turning round beam of the utility model suspension and tradition to turn round the measure-alike of beam, then near the material the neutral line is removed, thereby obtained stock utilization preferably, reduced manufacturing cost.
Claims (10)
1. turn round beam for one kind, it is characterized in that, this cross-sectional plane of turning round beam is made up of a plurality of U types (3) that vary in size, and described a plurality of U types (3) stack in the same way and less U type is positioned at bigger U type, the end of described a plurality of U types be connected to each other and adjacent U type between have hollow space (8).
2. the beam of turning round according to claim 1 is characterized in that described U type (3) is two, is respectively outer U type (5) and the size interior U type (6) less than this outer U type (5), and the end of described interior U type (6) and outer U type (5) is connected by connecting bridge (7).
3. the beam of turning round according to claim 1 is characterized in that the width of described hollow space (8) broadens to open side gradually from the closed side of described U type (3).
4. the beam of turning round according to claim 2 is characterized in that, described outer U type (5) is 0.5-2 with the ratio of the wall thickness of interior U type (6).
5. according to claim 3 or the 4 described beams of turning round, it is characterized in that the ratio of the width that described hollow space (8) is maximum and the wall thickness of described outer U type (5) is 1-2.5.
6. according to claim 2 or the 3 described beams of turning round, it is characterized in that the width of described U type (3) becomes big from the closed side of this U type gradually to open side.
7. the beam of turning round according to claim 6 is characterized in that, the angle between the both sides of described U type (3) is 5 °-60 °.
8. the beam of turning round according to claim 2 is characterized in that, the wall thickness of described connecting bridge (7) is greater than the wall thickness sum of U type (6) in described with outer U type (5).
9. the beam of turning round according to claim 2 is characterized in that, the described beam of turning round also comprises brace panel (9), and described brace panel (9) is captiveed joint with the described both sides of turning round the U type (3) of beam (1).
10. suspension, described suspension comprises turns round beam, elastic system and vibration insulating system, and described elastic system and vibration insulating system all are connected in the described beam of turning round, and it is characterized in that, and the described beam of turning round is any described beam of turning round in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201516376U CN201068076Y (en) | 2007-06-19 | 2007-06-19 | Twisting beam and suspension with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201516376U CN201068076Y (en) | 2007-06-19 | 2007-06-19 | Twisting beam and suspension with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068076Y true CN201068076Y (en) | 2008-06-04 |
Family
ID=39489449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201516376U Expired - Lifetime CN201068076Y (en) | 2007-06-19 | 2007-06-19 | Twisting beam and suspension with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068076Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271938A (en) * | 2009-01-14 | 2011-12-07 | 本田技研工业株式会社 | Bush for isolating stabilizer from vibration |
| CN102387876A (en) * | 2009-04-01 | 2012-03-21 | 杰富意钢铁株式会社 | Method for manufacturing torsion beam and torsion beam |
| CN104093503A (en) * | 2012-02-01 | 2014-10-08 | 麦格纳国际公司 | Transverse strut and method of forming a transverse strut |
| CN109070676A (en) * | 2016-05-10 | 2018-12-21 | 新日铁住金株式会社 | Torsion beam manufacturing method, torsion beam manufacturing device and torsion beam |
-
2007
- 2007-06-19 CN CNU2007201516376U patent/CN201068076Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102271938A (en) * | 2009-01-14 | 2011-12-07 | 本田技研工业株式会社 | Bush for isolating stabilizer from vibration |
| CN102271938B (en) * | 2009-01-14 | 2014-04-16 | 本田技研工业株式会社 | Bush for isolating stabilizer from vibration |
| CN102387876A (en) * | 2009-04-01 | 2012-03-21 | 杰富意钢铁株式会社 | Method for manufacturing torsion beam and torsion beam |
| CN102387876B (en) * | 2009-04-01 | 2013-01-23 | 杰富意钢铁株式会社 | Method for manufacturing torsion beam and torsion beam |
| CN104093503A (en) * | 2012-02-01 | 2014-10-08 | 麦格纳国际公司 | Transverse strut and method of forming a transverse strut |
| CN109070676A (en) * | 2016-05-10 | 2018-12-21 | 新日铁住金株式会社 | Torsion beam manufacturing method, torsion beam manufacturing device and torsion beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Auto Co., Ltd. Assignor: Biyadi Co., Ltd. Contract fulfillment period: 2008.4.25 to 2016.7.11 Contract record no.: 2008440000079 Denomination of utility model: Twisting beam and suspension with the same Granted publication date: 20080604 License type: General permission Record date: 20080513 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2016.7.11 Name of requester: BIYADI AUTOMOBILE CO., LTD., SHENZHEN CITY Effective date: 20080513 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |