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CN114132136A - Rigidity-adjustable rear torsion beam suspension - Google Patents

Rigidity-adjustable rear torsion beam suspension Download PDF

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Publication number
CN114132136A
CN114132136A CN202111422725.6A CN202111422725A CN114132136A CN 114132136 A CN114132136 A CN 114132136A CN 202111422725 A CN202111422725 A CN 202111422725A CN 114132136 A CN114132136 A CN 114132136A
Authority
CN
China
Prior art keywords
cross beam
fixed
torsion beam
support
rear torsion
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.)
Pending
Application number
CN202111422725.6A
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Chinese (zh)
Inventor
胡礼
宁晨曦
陈海
孙伟元
曹敏
向用均
陈磊
浦吕春
肖强
原磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Jian'an Industrial Ltd
Original Assignee
Sichuan Jian'an Industrial Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sichuan Jian'an Industrial Ltd filed Critical Sichuan Jian'an Industrial Ltd
Priority to CN202111422725.6A priority Critical patent/CN114132136A/en
Publication of CN114132136A publication Critical patent/CN114132136A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051Trailing arm twist beam axles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00Indexing codes relating to suspension types
    • B60G2200/20Semi-rigid axle suspensions
    • B60G2200/21Trailing arms connected by a torsional beam, i.e. twist-beam axles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/20Constructional features of semi-rigid axles, e.g. twist beam type axles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses a rigidity-adjusted rear torsion beam suspension, which comprises a cross beam, longitudinal arms, spring seats, a tire support, a shock absorber support and a rear shaft body support, wherein the longitudinal arms are respectively fixed at two ends of the cross beam, the spring seats are respectively fixed with the cross beam and the longitudinal arms, the tire support is fixed with the longitudinal arms, the shock absorber support is respectively fixed with the longitudinal arms and the spring seats, the rear shaft body support is fixed at one end of the longitudinal arms, the rear torsion beam suspension further comprises a reinforcing component and a fastener, the cross beam is provided with a groove extending along the axial direction of the cross beam, the side wall surface of the cross beam is provided with an installation hole, the reinforcing component is positioned in the groove, at least one part of the reinforcing component is matched with the side wall surface of the groove, and the reinforcing component and the cross beam are fixed into a whole through the fastener. The invention increases the overall strength of the rear torsion beam suspension by adjusting the rigidity of the cross beam.

Description

Rigidity-adjustable rear torsion beam suspension
Technical Field
The invention relates to the technical field of automobile rear torsion beam suspensions, in particular to a rigidity-adjustable rear torsion beam suspension.
Background
A torsion beam semi-independent suspension is a commonly used automobile rear suspension structure at present, longitudinal arms on the left side and the right side are welded together through a torsion beam with an integral V-shaped or U-shaped section, the front ends of the longitudinal arms are in hinged connection with an automobile body through rubber-metal supports, and the rear ends of the longitudinal arms are connected with a wheel hub, a shock absorber and a spring. The longitudinal arm of the torsion beam can swing up and down around the rigid connection point so as to absorb vibration through the shock absorber and the shock absorption spring, so that the shock absorption effect is achieved, when the suspensions on the two sides are not deformed, the torsion beam is subjected to torsion deformation, and the torsion beam has larger elasticity and can play a role of a transverse stabilizer bar. Therefore, the torsion beam is a key part in the torsion beam type semi-independent suspension, plays roles of force transmission, stress and connection balance on two sides, and the suspension is related to vehicle controllability and comfort.
The torsion beam is a key part in the torsion beam type semi-independent suspension and plays the roles of transferring force, bearing force and connecting and balancing two sides, when an automobile runs on an uneven road surface, the torsion beam can bear large force, when the suspensions on the two sides deform inequally, the torsion beam generates torsion deformation, the requirement on the stress of the cross beam is high, if the design is not good, the cross beam is easy to crack or even break, and therefore the stability and the safety of the whole automobile are affected.
Disclosure of Invention
The invention provides a rigidity-adjustable rear torsion beam suspension, which increases the overall strength of the rear torsion beam suspension by adjusting the rigidity of a cross beam.
The technical scheme for realizing the purpose is as follows:
rear torsion beam suspension that rigidity was adjusted, including crossbeam, trailing arm, spring holder, tire support, bumper shock absorber support, back shaft body support, the both ends of crossbeam are fixed with the trailing arm respectively, and the spring holder is fixed with crossbeam and trailing arm respectively, and the tire support is fixed with the trailing arm, and the bumper shock absorber support is fixed with trailing arm and spring holder respectively, and back shaft body support is fixed in the one end of trailing arm, still includes additional strengthening part and fastener, be equipped with on the crossbeam along this crossbeam axial extension's recess, be equipped with the mounting hole on the lateral wall face of crossbeam, additional strengthening part is located the recess and at least partly cooperates with the lateral wall face of recess, and additional strengthening part passes through the fastener with the crossbeam and fixes as an organic whole.
Further, the reinforcing component comprises a matching part matched with the side wall surface of the groove, a bending part and a stress deformation part, wherein one end of the matching part is connected with one end of the bending part, and the other end of the bending part is connected with the stress deformation part.
Further, the side wall of the force-bearing deformation portion is recessed inward to form a recessed portion for avoiding breaking of the force-bearing deformation portion.
Further, the recess is arc-shaped.
Further, a space is reserved between the stress deformation part and the side wall surface of the groove.
Further, still include tip torsion pressure-bearing member, tip torsion pressure-bearing member includes first connecting portion and support arm, the one end and the trailing arm welded fastening of first connecting portion, and first connecting portion are located the recess, and the other end of first connecting portion is fixed with two support arms, is equipped with between two support arms and lets the position mouth that steps down when warping for the support arm atress.
Further, at least one part of the position yielding opening is arc-shaped.
Furthermore, the end torsion pressure-bearing member further comprises a reinforcing flange, the reinforcing flange is located on the side of the relief opening, and the reinforcing flange is fixed with the support arm and the first connecting portion.
Furthermore, when the cross beam is stressed, the force is directly transmitted to the reinforcing component by the cross beam, and the action of outward supporting is formed on the cross beam through the matching relation between the reinforcing component and the cross beam, so that the cross beam is prevented from being excessively deformed when stressed, and therefore, the strength of the cross beam is adjusted by additionally arranging the reinforcing component and the fastening piece.
Drawings
FIG. 1 is a perspective view of a rear twist beam suspension;
FIG. 2 is a perspective view of the rear twist beam suspension in another orientation;
FIG. 3 is a schematic view of a reinforcing component;
FIG. 4 is a schematic view of an end torsion bearing member;
reference numbers in the drawings:
crossbeam 1, recess 1a, trailing arm 2, spring holder 3, tire support 4, bumper shock absorber support 5, back axis body support 6, reinforcing element 7, cooperation portion 7a, flexion 7b, atress deformation portion 7c, recess portion 7d to and fastener 8, first connecting portion 9, support arm 10 let a mouthful 11, strengthen flange 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, the rigidity-adjusted rear torsion beam suspension of the present invention includes a cross beam 1, a trailing arm 2, a spring seat 3, a tire support 4, a damper mount 5, and a rear axle body support 6, wherein the trailing arm 2 is fixed to both ends of the cross beam 1, the spring seat 3 is fixed to the cross beam 1 and the trailing arm 2, the tire support 4 is fixed to the trailing arm 2, the damper mount 5 is fixed to the trailing arm 2 and the spring seat 3, the rear axle body support 6 is fixed to one end of the trailing arm 2,
and welding the two manufactured trailing arm assemblies at two ends of the finished beam 1 symmetrically, welding and fixing the spring seats 3 with the trailing arm assemblies and the beam 1, and welding the shock absorber support 5 with the trailing arms 2 and the spring seats 3.
The manufacture of the trailing arm assembly is as follows: welding the tire support 4 with the trailing arm 2; and welding the rear axle body bracket 6 with the trailing arm 2. The welding process of the tire support 4 and the trailing arm 2 is as follows: firstly, the tire support 4 and the trailing arm 2 are fixed in advance through spot welding, namely, the tire support 4 and the trailing arm 2 are welded in a 4mm spot welding mode, the tire support 4 and the trailing arm 2 are enabled to obtain the effect of fixing in advance through the spot welding mode, and the relative position of the tire support 4 and the trailing arm 2 is enabled to obtain positioning. Then clamping the trailing arm 2 on a rotary fixture to ensure that the welding part between the trailing arm 2 and the tire support 4 corresponds to the part of the laser welding robot applying welding in the rotating process, starting the rotary fixture to rotate, welding the tire support 4 and the trailing arm 2 by the laser welding robot, and forming a continuous welding seam between the trailing arm 2 and the tire support 5.
The welding process of the spring seat 3, the longitudinal arm assembly and the cross beam 1 is as follows: after the spring seat 3, the longitudinal arm assembly and the cross beam 1 are pre-fixed through spot welding, the cross beam 1 assembly is clamped on a clamp, a laser welding robot welds the spring seat 3 and the longitudinal arm assembly according to a programmed path and welds the spring seat 3 and the cross beam, and continuous welding seams are formed among the longitudinal arm assembly, the spring seat 3 and the cross beam 1.
The spring seat 3 and the longitudinal arm and cross beam 1 assembly are pre-fixed through spot welding, namely the spring seat 3 and the longitudinal arm assembly are welded through 4mm spot welding, the longitudinal arm assembly and the cross beam 1 of the spring seat 3 are pre-fixed through a spot welding mode, and the relative positions of the longitudinal arm assembly and the cross beam 1 of the spring seat 3 are located. Because the spring holder 3 is the main atress part, consequently, the welding reliability of spring holder 3 and trailing arm assembly and crossbeam 1 must obtain guaranteeing, welds according to the route of programming through control laser welding robot, can guarantee welded precision and reliability.
The shock absorber support 5 is also a main stressed part, therefore, the shock absorber support 5 must be welded with the longitudinal arm 2 and the spring seat 3, so that the shock absorber support 5 has the characteristics of good stability and reliability, the situation that the shock absorber support 5 is separated from the longitudinal arm 2 and the spring seat 3 due to impact in the using process is avoided, and the welding process of the shock absorber support 5 belongs to the conventional process.
The cross beam comprises a cross beam 1 and a reinforcing component 7, wherein the cross beam 1 is provided with a groove 1a extending along the axial direction of the cross beam 1, after the groove 1a is formed in the cross beam 1, the cross section of the cross beam 1 is preferably in a V shape, a mounting hole is formed in the side wall surface of the cross beam 1, the mounting hole is formed in a drilling or milling mode in machining, the hole wall and the hole opening of the mounting hole are in a smooth state, namely after the mounting hole is formed, the hole wall, the hole opening and the periphery of the hole opening of the mounting hole are required to be polished, the periphery of the mounting hole is ensured to be smooth, and metal residues are prevented from being remained on the cross beam 1, so that the adverse effect that the cross beam 1 is cracked due to the fact that the metal residues provide acting force for the cross beam 1 due to pressure extrusion in the using process is avoided.
The reinforcing component 7 is located in the groove 1a, at least one part of the reinforcing component is matched with the side wall surface of the groove 1a, preferably, one part of the reinforcing component 7 is attached to the side wall surface of the groove 1a, when the cross beam 1 is stressed, the cross beam 1 directly transmits the stress to the reinforcing component 7, and the reinforcing component 7 and the cross beam 1 are matched to form an outward supporting effect on the cross beam 1, so that overlarge deformation of the cross beam 1 when stressed is avoided, and the reinforcing component 7 mainly provides a supporting and reinforcing effect on the middle part of the cross beam 1. In the present invention, the reinforcing member 7 is fixed integrally with the cross member 1 by the fastening member 8. The fastener 8 is preferably a rivet, which has a smooth surface and does not exert a force such as a piercing force on the surface of the cross member 1 and the hole wall surface of the mounting hole, thereby causing no defect such as a crack to the cross member 1. Therefore, the strength of the cross beam 1 is adjusted by adding the reinforcing member 7 and the fastening member 8.
In this embodiment, the reinforcing member 7 includes an engagement portion 7a engaged with a side wall surface of the recess 1a, a curved portion 7b, and a force-receiving deformable portion 7c, one end of the engagement portion 7a is connected to one end of the curved portion 7b, and the other end of the curved portion 7b is connected to the force-receiving deformable portion 7 c. The surface shape of the matching part 7a is matched with the side wall surface of the groove 1a, the bending part 7b is arc-shaped, the two ends of the stress deformation part 7c are respectively connected with the bending parts 7b, and when the reinforcing part 7 is stressed, acting force is applied to the stress deformation part 7c through the matching part 7a and the bending part 7b, so that the stress deformation part 7c is deformed. The reinforcing member 7 in this embodiment is integrally press-formed from a steel plate.
The side wall of the force-receiving deformation portion 7c is recessed inward to form a recessed portion 7d for avoiding breaking of the force-receiving deformation portion 7c, and the recessed portion 7d preferably has an arc-shaped structure. Through setting up recess 7d, when atress deformation portion 7c atress, can avoid stress concentration and rupture atress deformation portion 7 on the one hand, on the other hand helps making atress deformation portion 7c take place elastic deformation to make reinforcing member 7 provide stable, lasting enhancement and supporting role to crossbeam 1.
The force receiving deformation portion 7c has a space from the side wall surface of the recess 1 a. This interval provides the space of stepping down for when the atress warp 7c atress warp, produces the interference with crossbeam 1 when avoiding the atress warp 7c atress warp.
Still include tip torsion pressure-bearing member, tip torsion pressure-bearing member provides support and additional strengthening for crossbeam 1's tip, tip torsion pressure-bearing member includes first connecting portion 9 and support arm 10, the one end and the trailing arm 2 welded fastening of first connecting portion 9, first connecting portion 9 is located recess 1a, the other end of first connecting portion 9 is fixed with two support arms 10, be equipped with between two support arms 10 and let when warping for support arm 10 atress the mouth 11 of stepping down, at least a part of the mouth 11 of stepping down is the arc.
When the end of the beam 1 is subjected to pressure or torsion, the beam 1 transmits a force to the end torsion bearing member, typically by pressing the support arms 10 inwardly, the pressing force deforming the support arms 10 in the end torsion bearing member, and the deformation of the beam 1 is reduced due to the supporting and reinforcing effects of the support arms 10, thereby helping to maintain the form of the beam 1 by the end torsion bearing member.
The end torsion bearing member further comprises a reinforcing flange 12, the reinforcing flange 12 is positioned at the side of the relief opening 11, and the reinforcing flange 12 is fixed with the support arm 10 and the first connecting portion 9. By means of the flange 12, it is possible to avoid that the support arm 10 is deformed too much and is broken or difficult to restore.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and not to limit the patent scope of the present invention; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the invention.

Claims (8)

1. A rigidity-adjusted rear torsion beam suspension comprises a cross beam (1), longitudinal arms (2), spring seats (3), a tire support (4), a shock absorber support (5) and a rear shaft body support (6), wherein the longitudinal arms (2) are respectively fixed at two ends of the cross beam (1), the spring seats (3) are respectively fixed with the cross beam (1) and the longitudinal arms (2), the tire support (4) is fixed with the longitudinal arms (2), the shock absorber support (5) is respectively fixed with the longitudinal arms (2) and the spring seats (3), the rear shaft body support (6) is fixed at one end of the longitudinal arms (2), the rigidity-adjusted rear torsion beam suspension is characterized by further comprising a reinforcing component (7) and a fastener (8), a groove (1 a) extending along the axial direction of the cross beam (1) is formed in the cross beam (1), a mounting hole is formed in the side wall surface of the cross beam (1), the reinforcing component (7) is located in the groove (1 a), and at least one part of the reinforcing component is matched with the side wall surface of the groove (1 a), the reinforcing component (7) and the cross beam (1) are fixed into a whole through a fastener (8).
2. The stiffness-adjusted rear torsion beam suspension according to claim 1, wherein the reinforcing member (7) includes an engaging portion (7 a) that engages with a side wall surface of the recess (1 a), a bent portion (7 b), and a force-receiving deformable portion (7 c), one end of the engaging portion (7 a) being connected to one end of the bent portion (7 b), and the other end of the bent portion (7 b) being connected to the force-receiving deformable portion (7 c).
3. Stiffness adjusted rear torsion beam suspension according to claim 2, characterized in that the side walls of the force-receiving deformation portion (7 c) are recessed to the inner side to form a recessed portion (7 d) that avoids breaking the force-receiving deformation portion (7 c).
4. Stiffness adjusted rear torsion beam suspension according to claim 3, wherein the recess (7 d) is arc shaped.
5. Stiffness adjusted rear torsion beam suspension according to claim 2, characterized in that the force-receiving deformation portion (7 c) has a spacing from the side wall face of the groove (1 a).
6. The rigidity-adjusted rear torsion beam suspension according to claim 1, further comprising an end torsion bearing member, wherein the end torsion bearing member comprises a first connecting portion (9) and supporting arms (10), one end of the first connecting portion (9) is welded and fixed with the trailing arm (2), the first connecting portion (9) is located in the groove (1 a), the other end of the first connecting portion (9) is fixed with the two supporting arms (10), and a yielding port (11) which yields when the supporting arms (10) deform under stress is arranged between the two supporting arms (10).
7. Stiffness adjusted rear torsion beam suspension according to claim 6, wherein at least a part of the relief opening (11) is arc shaped.
8. Stiffness adjusted rear torsion beam suspension according to claim 6, wherein the end torsion beam bearing member further comprises a reinforcement flange (12), the reinforcement flange (12) being located at the side of the relief opening (11), the reinforcement flange (12) being fixed with the support arm (10) and the first connection portion (9).
CN202111422725.6A 2021-11-26 2021-11-26 Rigidity-adjustable rear torsion beam suspension Pending CN114132136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111422725.6A CN114132136A (en) 2021-11-26 2021-11-26 Rigidity-adjustable rear torsion beam suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111422725.6A CN114132136A (en) 2021-11-26 2021-11-26 Rigidity-adjustable rear torsion beam suspension

Publications (1)

Publication Number Publication Date
CN114132136A true CN114132136A (en) 2022-03-04

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CN202111422725.6A Pending CN114132136A (en) 2021-11-26 2021-11-26 Rigidity-adjustable rear torsion beam suspension

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119369879A (en) * 2024-09-11 2025-01-28 广州汽车集团股份有限公司 Torsion beam assembly, vehicle, and vehicle control method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102745035A (en) * 2012-07-24 2012-10-24 中国长安汽车集团股份有限公司四川建安车桥分公司 Semi-independent suspension structure of automobile rear torsion beam
CN104859394A (en) * 2015-06-18 2015-08-26 四川建安工业有限责任公司 Transverse beam structure used for rear torsion-beam suspension
CN204641311U (en) * 2015-05-29 2015-09-16 四川建安工业有限责任公司 The semi-independent suspension of torsion girder-like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102745035A (en) * 2012-07-24 2012-10-24 中国长安汽车集团股份有限公司四川建安车桥分公司 Semi-independent suspension structure of automobile rear torsion beam
CN204641311U (en) * 2015-05-29 2015-09-16 四川建安工业有限责任公司 The semi-independent suspension of torsion girder-like
CN104859394A (en) * 2015-06-18 2015-08-26 四川建安工业有限责任公司 Transverse beam structure used for rear torsion-beam suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119369879A (en) * 2024-09-11 2025-01-28 广州汽车集团股份有限公司 Torsion beam assembly, vehicle, and vehicle control method

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Application publication date: 20220304