Torsion beam suspension and vehicle

Abstract

The invention relates to the technical field of vehicle suspensions, and particularly discloses a torsion beam suspension and a vehicle. The torsion beam suspension comprises a frame, a first torsion bar, a second torsion bar and a locking and releasing mechanism; the frame comprises a first mounting bracket, a second mounting bracket and a torsion beam, and the torsion beam is connected with the first mounting bracket and the second mounting bracket; the first torsion bar comprises a first end and a second end which are oppositely arranged, and the first end is connected with the first mounting bracket; the second torsion bar comprises a third end and a fourth end which are oppositely arranged, and the fourth end is connected with the second mounting bracket; the locking and releasing mechanism is connected with the second end and the third end and can be operated to be fixedly connected with the second end and the third end; or the second end and the third end are released. According to the torsion beam suspension, the first torsion bar and the second torsion bar can be fixedly connected or released through the locking and releasing mechanism according to road requirements, so that the torsional rigidity is adjusted, the driving capacity of a vehicle under different use working conditions is met, the structure is simple, and operability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle suspension, and in particular to a torsion beam suspension and a vehicle. Background Art

[0002] Torsion beam suspension is a commonly used structural form in automobiles. Due to its mature technology and low cost, it is widely used in the passenger car market.

[0003] However, the torsional stiffness of the torsion beam suspension in the prior art cannot be adjusted or has a complex structure, is not operable for mass production, and cannot or to a lesser extent meet the vehicle's operating conditions. Summary of the invention

[0004] The torsion beam suspension and vehicle provided in the present application can provide different torsional stiffnesses to meet the driving capabilities of the vehicle under different operating conditions.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a torsion beam suspension and a vehicle, wherein the torsion beam suspension includes a frame, a first torsion bar, a second torsion bar and a locking mechanism; the frame includes a first mounting bracket, a second mounting bracket and a torsion beam, and the torsion beam connects the first mounting bracket and the second mounting bracket; the first torsion bar includes a first end and a second end arranged oppositely, and the first end is connected to the first mounting bracket; the second torsion bar includes a third end and a fourth end arranged oppositely, and the fourth end is connected to the second mounting bracket; the locking mechanism connects the second end and the third end, and the locking mechanism can be operated to fix the second end and the third end; or to release the second end and the third end.

[0006] The lock-release mechanism includes a driving member and a fixing member connected to the driving member; fixing holes are respectively provided on the second end and the third end, and the fixing holes are aligned; the fixing member passes through the fixing hole or is loosened from the fixing hole under the drive of the driving member.

[0007] The second end is provided with a receiving hole, and the fixing hole of the second end passes through the receiving hole; the third end is provided with a matching shaft, and the fixing hole of the third end is arranged on the matching shaft; the matching shaft is accommodated in the receiving hole.

[0008] Among them, the locking mechanism also includes a fixing seat, the fixing seat includes a first side wall and a second side wall arranged opposite to each other, and a third side wall connecting the first side wall and the second side wall; a first mounting hole and a second mounting hole are provided on the fixing seat, the first mounting hole passes through the first side wall and the second side wall, the second end and the third end extend into and are accommodated in the first mounting hole through the first side wall and the second side wall respectively; the second mounting hole is connected to the first mounting hole and passes through the third side wall, and the fixing piece is movably arranged in the second mounting hole.

[0009] The first torsion bar and the second torsion bar are coaxially arranged along a first axis, and the first axis is parallel to the installation direction of the torsion beam.

[0010] Wherein, the torsion beam suspension further includes a bushing, and the first end and the fourth end are flexibly connected to the first mounting bracket and the second mounting bracket respectively through the bushing.

[0011] Wherein, the first mounting bracket and the second mounting bracket are both provided with sleeves, and each sleeve includes a connecting portion and a fixing portion; the connecting portion is flexibly connected to the sleeve; and the first end and the fourth end are respectively fixed to the corresponding fixing portion.

[0012] Among them, the first end and the fourth end are both provided with a snap-on spline, and the fixing part is also provided with a mounting groove, and the snap-on spline is installed in the mounting groove; the torsion beam suspension also includes a mounting pin, which is installed on the fixing part and covers the mounting groove.

[0013] Among them, the locking and releasing mechanism includes a fixed seat, a driving member and two fixed members; the fixed seat is provided with two mounting holes, and the second end and the third end are respectively arranged in the corresponding mounting holes; the driving member drives the two fixed members to simultaneously fix the second end and the fixed seat, and the third end and the fixed seat; or simultaneously release or selectively release the second end and the fixed seat and / or the third end and the fixed seat.

[0014] The present application also includes a second technical solution, which provides a vehicle including the above-mentioned torsion beam suspension.

[0015] The beneficial effect of the present application is that, different from the prior art, the present application provides a torsion beam suspension and a vehicle, the torsion beam suspension includes a vehicle frame, a first torsion bar, a second torsion bar and a locking mechanism; the vehicle frame includes a first mounting bracket, a second mounting bracket and a torsion beam, and the torsion beam connects the first mounting bracket and the second mounting bracket. The first torsion bar includes a first end and a second end arranged oppositely, and the first end is connected to the first mounting bracket; the second torsion bar includes a third end and a fourth end arranged oppositely, and the fourth end is connected to the second mounting bracket. The locking mechanism connects the second end and the third end. Specifically, on the one hand, the locking mechanism can be operated to fix the second end and the third end, so that the first torsion bar, the second torsion bar and the locking mechanism together form a rigid part, so as to support the first mounting bracket and the second mounting bracket together with the torsion beam to improve the torsion stiffness of the torsion beam suspension. On the other hand, the locking mechanism can also release the second end and the third end, so that the first torsion bar and the second torsion bar are separated from each other, and relax to form two independent and non-interfering parts. At this time, there is only one rigid part, the torsion beam, between the first mounting bracket and the second mounting bracket, and the torsion stiffness of the torsion beam suspension is relatively reduced. Therefore, the torsion beam suspension of the embodiment of the present application can adjust the torsion stiffness by fixing or releasing the first torsion bar and the second torsion bar through the lock-release mechanism according to the road surface requirements to meet the driving ability of the vehicle under different use conditions. In addition, the torsion beam suspension of the embodiment of the present application can achieve the purpose of adjusting the torsion stiffness of the torsion beam suspension only by operating the lock-release mechanism to fix or release the first torsion bar and the second torsion bar, and has a simple structure and strong operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 is a schematic diagram of the assembly structure of an embodiment of a torsion beam suspension of the present application, wherein the torsion beam suspension comprises a vehicle frame, a first torsion bar, a second torsion bar and a lock-release mechanism;

[0018] Figure 2 yes Figure 1 Schematic diagram of the explosion structure;

[0019] Figure 3 yes Figure 1 A schematic diagram of the assembly structure of the middle lock-release mechanism and the first torsion bar and the second torsion bar;

[0020] Figure 4 yes Figure 3 Schematic diagram of the explosion structure;

[0021] Figure 5 yes Figure 4 AA cross-sectional structural diagram in the locked state;

[0022] Figure 6 yes Figure 4 AA cross-sectional structure diagram in unlocked state;

[0023] Figure 7 yes Figure 1 A schematic diagram of the structure of the first torsion bar;

[0024] Figure 8 yes Figure 1 A schematic diagram of the structure of the second torsion bar;

[0025] Fig. 9 yes Figure 1 A schematic diagram of an exploded structure in which the first torsion bar and the first mounting bracket are assembled;

[0026] Fig.10 yes Figure 1 Schematic diagram of the exploded structure of the second torsion bar and bushing assembly;

[0027] Fig.11 yes Figure 1 Schematic diagram of the structure of the middle frame;

[0028] Fig.12 yes Figure 1 Schematic diagram of the structure of the middle bushing;

[0029] Fig.13 yes Figure 1 A schematic diagram of the structure of the mounting pin;

[0030] Fig.14 yes Figure 1 Schematic diagram of the structure of the connecting parts. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Please refer to Figures 1 to 4 In one aspect of the present application, a torsion beam suspension 100 is provided. The torsion beam suspension 100 includes a vehicle frame 1, a first torsion bar 2, a second torsion bar 3 and a release mechanism 4. The vehicle frame 1 includes a first mounting bracket 11, a second mounting bracket 12 and a torsion beam 13. The torsion beam 13 connects the first mounting bracket 11 and the second mounting bracket 12. The first torsion bar 2 includes a first end 21 and a second end 22 that are arranged oppositely. The first end 21 is connected to the first mounting bracket 11. The second torsion bar 3 includes a third end 31 and a fourth end 32 that are arranged oppositely. The fourth end 32 is connected to the second mounting bracket 12. The release mechanism 4 connects the second end 22 and the third end 31. Specifically, on one hand, the release mechanism 4 can be operated to fix the second end 22 and the third end 31 to improve the torsion stiffness of the torsion beam suspension 100. On the other hand, the release mechanism 4 can also release the second end 22 and the third end 31 to reduce the torsion stiffness of the torsion beam suspension 100.

[0036] Furthermore, the first torsion bar 2 and the second torsion bar 3 form a crossbeam stabilization system with adjustable stiffness, which is used to balance the up and down bounce of the left and right wheels to reduce the shaking of the vehicle and keep the vehicle stable. Under the action of the lock release mechanism 4, the first torsion bar 2 and the second torsion bar 3 are in two states: coupled or unlocked. In the coupled state, the lock release mechanism 4 can be operated to fix the second end 22 and the third end 31, so that the first torsion bar 2, the second torsion bar 3 and the lock release mechanism 4 together form a rigid part, thereby supporting the first mounting bracket 11 and the second mounting bracket 12 together with the torsion beam 13, thereby improving the torsional stiffness of the torsion beam suspension 100; in the unlocked state, the lock release mechanism 4 can release the second end 22 and the third end 31, so that the first torsion bar 2 and the second torsion bar 3 are separated from each other, and relax to form two independent and non-interfering parts. At this time, there is only one rigid part, the torsion beam 13, between the first mounting bracket 11 and the second mounting bracket 12, and the torsional stiffness of the torsion beam suspension 100 is relatively reduced. Therefore, the torsion beam suspension 100 of the embodiment of the present application can adjust the torsion stiffness by fixing or releasing the first torsion bar 2 and the second torsion bar 3 through the lock-release mechanism 4 according to the road surface requirements to meet the driving ability of the vehicle under different use conditions. In addition, the torsion beam suspension 100 of the embodiment of the present application can achieve the purpose of adjusting the torsion stiffness of the torsion beam suspension 100 only by operating the lock-release mechanism 4 to fix or release the first torsion bar 2 and the second torsion bar 3, and has a simple structure and strong operability.

[0037] In one embodiment of the present application, please refer to Figures 3 to 6 The lock release mechanism 4 includes a driving member 41 and a fixing member 42 connected to the driving member 41. The second end 22 and the third end 31 are respectively provided with fixing holes 5, and the two fixing holes 5 are aligned. The fixing member 42 passes through the fixing hole 5 or is loosened from the fixing hole 5 under the drive of the driving member 41.

[0038] Specifically, the driving member 41 is used to drive the fixing member 42 to move. In actual use, the fixing member 42 is driven by the driving member 41 to move through the fixing holes 5 on the second end 22 and the third end 31, and is located in the two fixing holes 5 at the same time, so that the second end 22 is fixedly connected with the third end 31, that is, the first torsion bar 2 and the second torsion bar 3 are locked under the action of the fixing member 42, thereby increasing the torsional rigidity. The fixing member 42 is driven by the driving member 41 to move to loosen from the two fixing holes 5, and the second end 22 and the third end 31 lose their constraints, that is, the driving member 41 drives the fixing member 42 to unlock the second end 22 and the third end 31, so that the second end 22 can move relative to the third end 31, increasing the deformation between the first torsion bar 2 and the second torsion bar 3, thereby reducing the torsional rigidity.

[0039] In a specific embodiment, the driving member 41 may be a disc-shaped driving motor, the fixing member 42 may be a cylindrical fixing shaft with threads, the fixing holes 5 on the second end 22 and the third end 31 may be threaded holes, and the driving motor may drive the fixing shaft to rotate and move in and out of the threaded holes, so that the fixing member 42 is fixedly connected to the fixing hole 5 or loosened from the fixing hole 5 under the drive of the driving member 41, and the torsional stiffness of the torsion beam suspension 100 is adjusted. In another specific embodiment, the driving member 41 and the fixing member 42 may also include other structures to cooperate with the fixing hole 5 to lock or unlock the second end 22 and the third end 31.

[0040] Furthermore, a guide member (not shown) is provided at one end of the fixing member 42 facing the fixing hole 5, which is used to guide the fixing member 42 into the fixing hole 5 for locking when the fixing member 42 needs to enter the fixing hole 5 again after it is separated from the fixing hole 5, thereby improving or avoiding the situation where the fixing member 42 is not aligned with the fixing hole 5, thereby improving stability. In addition, a VCU (Vehicle Control Unit) is also provided in the vehicle, which can detect the postures of the left and right sides of the vehicle through the VCU, and perform locking and unlocking movements when the postures are consistent, thereby improving or avoiding the situation where the fixing holes 5 on the second end 22 and the third end 31 are not aligned when the fixing member 42 needs to enter the fixing hole 5 again after it is separated from the fixing hole 5, thereby improving stability and reliability.

[0041] In one embodiment of the present application, please refer to Figure 7 and Figure 8 The second end 22 is provided with a receiving hole 221, the fixing hole 5 of the second end 22 passes through the receiving hole 221, the third end 31 is provided with a matching shaft 311, the fixing hole 5 of the third end 31 is arranged on the matching shaft 311, and the matching shaft 311 is accommodated in the receiving hole 221.

[0042] Specifically, the fixing hole 5 of the second end 22 is arranged on the receiving hole 221, and the fixing hole 5 of the third end 31 is arranged on the matching shaft 311. The fixing hole 5 of the second end 22 is aligned with the fixing hole 5 of the third end 31 by accommodating the matching shaft 311 in the receiving hole 221. When the fixing member 42 extends into the two fixing holes 5, it penetrates the matching shaft 311 and the receiving hole 221, and the second end 22 and the third end 31 can be locked, so that the first torsion bar 2, the second torsion bar 3 and the fixing member 42 together form a rigid member and are supported between the first mounting bracket 11 and the second mounting bracket 12 together with the torsion beam 13, thereby improving the torsional rigidity of the torsion beam suspension 100. When the fixing member 42 is separated from the two fixing holes 5, the second end 22 and the third end 31 will not be separated from each other or even shifted due to the cooperation between the matching shaft 311 and the receiving hole 221, but only separated from the fixation, thereby improving or avoiding the second end 22 and the third end 31 shifting and being inconvenient to lock when the fixing member 42 is to be locked next time. Furthermore, by accommodating the matching shaft 311 through the receiving hole 221 , the first torsion bar 2 and the second torsion bar 3 can be coaxially arranged, which is beneficial to the transmission of torsional force.

[0043] In one embodiment of the present application, please refer to Figures 4 to 6 The lock release mechanism 4 further includes a fixing seat 43, which includes a first side wall 431 and a second side wall 432 that are arranged opposite to each other, and a third side wall 433 that connects the first side wall 431 and the second side wall 432. The fixing seat 43 is provided with a first mounting hole 434 and a second mounting hole 435. The first mounting hole 434 penetrates the first side wall 431 and the second side wall 432, and the second end 22 and the third end 31 extend into and are accommodated in the first mounting hole 434 through the first side wall 431 and the second side wall 432, respectively; the second mounting hole 435 is communicated with the first mounting hole 434 and penetrates the third side wall 433, and the fixing member 42 is movably arranged in the second mounting hole 435.

[0044] Specifically, the fixing seat 43 can be used to support the second end 22, the third end 31 and the fixing member 42. The second end 22 and the third end 31 are locked or unlocked in the first mounting hole 434. The second mounting hole 435 is connected to the first mounting hole 434, and the fixing member 42 is movably arranged in the second mounting hole 435 to fix or release the second end 22 and the third end 31 in the first mounting hole 434. In order to facilitate the fixing member 42 to extend into the fixing hole 5, the fixing holes 5 of the second end 22 and the third end 31 are both located at the connection between the second mounting hole 435 and the first mounting hole 434. Further, after the matching shaft 311 is accommodated in the receiving hole 221, the two aligned fixing holes 5 are located at the connection between the second mounting hole 435 and the first mounting hole 434 and are aligned toward the fixing member 42. The fixing member 42 can move along the second mounting hole 435 to pass through the two fixing holes 5, and can also move along the second mounting hole 435 to leave the two fixing holes 5. That is to say, the second mounting hole 435 can play a guiding role to improve stability.

[0045] Furthermore, the driving member 41 can be installed in the fixing seat 43 to control the movement of the fixing member 42 and simplify the structure. Of course, the driving member 41 can also be installed outside the fixing seat 43, which will not be described in detail here.

[0046] In one embodiment of the present application, please refer to Figure 1 and Fig.11 The first torsion bar 2 and the second torsion bar 3 are coaxially arranged along the first axis, and the first axis is parallel to the installation direction of the torsion beam 13.

[0047] Specifically, the first torsion bar 2 and the second torsion bar 3 are coaxially arranged along the first axis, that is, the first torsion bar 2 and the second torsion bar 3 are coaxially arranged along the first axis direction D1, which is conducive to the transmission of torsional force, so as to balance the up and down bounce of the left and right wheels, reduce the shaking of the vehicle, and maintain the stability of the vehicle. In a specific embodiment, Figure 7 and Figure 8 As shown, the second end 22 is provided with a receiving hole 221, and the third end 31 is provided with a matching shaft 311. The first torsion bar 2 and the second torsion bar 3 can be coaxially arranged by accommodating the matching shaft 311 through the receiving hole 221. In another specific embodiment, the first torsion bar 2 and the second torsion bar 3 can also be coaxially arranged by other means, which will not be repeated here. The installation direction of the torsion beam 13 is the direction connecting the first mounting bracket 11 and the second mounting bracket 12, that is, the width direction of the vehicle body. The first axis is parallel to the installation direction of the torsion beam 13, that is, the first axis direction D1 extends along the width direction of the vehicle body. Therefore, the first torsion bar 2 and the second torsion bar 3 coaxially arranged along the first axis direction D1 are parallel to the torsion beam 13, which can improve the integrity and stability of the torsion beam suspension 100.

[0048] Further, please continue to combine Figures 4 to 8 In order to realize the coaxial arrangement of the first torsion bar 2 and the second torsion bar 3 along the first axis, the receiving hole 221 can be extended along the axial direction of the second end 22, the matching shaft 311 can be arranged along the axial direction of the third end 31, and the diameter of the receiving hole 221 matches the diameter of the matching shaft 311, so that after the matching shaft 311 is accommodated in the receiving hole 221, the axial directions of the first torsion bar 2 and the second torsion bar 3 are the same, and then the first torsion bar 2 and the second torsion bar 3 can be arranged along the first axial direction D1.

[0049] Furthermore, the first mounting hole 434 can also be arranged along the first axis direction to facilitate the passage of the second end 22 and the third end 31. The fixing holes 5 of the second end 22 and the third end 31 can be arranged along a direction perpendicular to the first axis and pass through the receiving hole 221 and the matching shaft 311, respectively. Correspondingly, the second mounting hole 435 is also arranged along a direction perpendicular to the first axis, so that the fixing member 42 can increase the resistance to limit the relative movement of the matching shaft 311 and the receiving hole 221 when passing through the two fixing holes 5, thereby enhancing the locking effect.

[0050] In one embodiment of the present application, please refer to Figure 1 , Fig. 9 and Fig.10 The torsion beam suspension 100 further includes a bushing 6 , and the first end 21 and the fourth end 32 are flexibly connected to the first mounting bracket 11 and the second mounting bracket 12 respectively through the bushing 6 .

[0051] Specifically, the bushing 6 can make the first end 21 and the fourth end 32 flexibly connected to the first mounting bracket 11 and the second mounting bracket 12 respectively, and the first end 21 and the fourth end 32 can generate displacement relative to the first mounting bracket 11 and the second mounting bracket 12 respectively, which is used to balance the up and down bounce of the left and right wheels to reduce the shaking of the vehicle and keep the vehicle stable.

[0052] In one embodiment of this application, please continue to combine Fig.11 and Fig.12 The first mounting bracket 11 and the second mounting bracket 12 are both provided with a sleeve 14, and each bushing 6 includes a connecting portion 61 and a fixing portion 62. The connecting portion 61 is flexibly connected to the sleeve 14, and the first end 21 and the fourth end 32 are respectively fixed to the corresponding fixing portion 62.

[0053] Specifically, the sleeve 14 is used to install the bushing 6. The connecting portion 61 is located at the outer periphery of the bushing 6 and is flexibly connected to the sleeve 14 to achieve a flexible connection between the bushing 6 and the first mounting bracket 11 and the second mounting bracket 12. The fixing portion 62 is located on the side of the bushing 6 facing the first end 21 and the fourth end 32, so that the first end 21 and the fourth end 32 are respectively fixed to the corresponding fixing portion 62, and the fixing portion 62 can limit the relative movement of the first end 21 and the fourth end 32, so that the first end 21 and the fourth end 32 can be flexibly connected to the first mounting bracket 11 and the second mounting bracket 12 through the fixing portion 62 and the connecting portion 61.

[0054] In one embodiment, the connection portion 61 may be cylindrical and installed on the inner circumference of the sleeve 14 to achieve flexible connection with the sleeve 14. In another embodiment, the connection portion 61 may also be a structure of other shapes to correspond to sleeves 14 of different models and specifications.

[0055] In one embodiment of this application, please continue to combine Fig.13 The first end 21 and the fourth end 32 are both provided with a snap-on spline 7, and the fixing portion 62 is further provided with a mounting groove 621, in which the snap-on spline 7 is mounted. The torsion beam suspension 100 further includes a mounting pin 8, which is mounted on the fixing portion 62 and covers the mounting groove 621.

[0056] Specifically, the mounting groove 621 includes a first opening 6211 arranged along the first axis direction and a second opening 6212 perpendicular to the first axis direction. The snap-fit ​​spline 7 is installed in the mounting groove 621 and covers the first opening 6211, and the position of the snap-fit ​​spline 7 can be limited by the opposite side walls of the mounting groove 621. The second opening 6212 is provided to facilitate the insertion and removal of the snap-fit ​​spline 7. After the snap-fit ​​spline 7 is installed in the mounting groove 621, in order to improve and avoid the snap-fit ​​spline 7 from shaking out from the second opening 6212 during normal use, the mounting pin 8 is installed on the fixing part 62 and covers the second opening 6212 to achieve the position limitation of the snap-fit ​​spline 7. In a specific embodiment, the opposite sides of the second opening 6212 can be provided with screw holes 622, and the opposite ends of the mounting pin 8 are also provided with bolts 81, which are rotated into the screw holes 622 by the bolts 81, so that the mounting pin 8 is fixedly connected to the fixing part 62 and covers the second opening 6212, which is convenient for disassembly and installation, and reduces the replacement and maintenance costs. Furthermore, the mounting pin 8 may be provided with a convex portion 82, which may extend into the mounting groove 621 and abut against the clamping spline 7 to limit the clamping spline 7. In another specific embodiment, the mounting pin 8 may also be fixed to the fixing portion 62 by other means, which will not be described in detail herein.

[0057] Further, please continue to combine Fig.14The torsion beam suspension 100 further includes a connecting member 9 for connecting the vehicle frame 1 with the vehicle body, and the connecting member 9 includes a connecting plate 91 connected with the vehicle body and a connecting arm 92 connected with the vehicle frame 1. The connecting arm 92 is arranged on the connecting plate 91 and extends perpendicular to the plate surface. The two connecting arms 92 are arranged at intervals, and a receiving space that can accommodate at least part of the sleeve 14 is formed between the two connecting arms 92. A connecting hole 911 is provided on the connecting plate 91, and the connecting member 9 can be installed on the vehicle body by passing a screw through the connecting hole 911. A third mounting hole 921 is provided at one end of the connecting arm 92 away from the connecting plate 91, and a fourth mounting hole 63 is provided on the bushing 6. The third mounting hole 921 and the fourth mounting hole 63 are aligned, and a screw or other component can be passed through the third mounting hole 921 and the fourth mounting hole 63 to connect the connecting member 9 with the vehicle frame 1. Further, there is a gap 64 between the connecting portion 61 and the fixing portion 62, and the connecting arm 92 can be arranged in the gap 64 to strengthen the limit of the connecting member 9 and improve stability.

[0058] In another embodiment of the present application, different from the above embodiment, the lock release mechanism 4 includes a fixing seat 43, a driving member 41 and two fixing members 42. The fixing seat 43 is provided with two mounting holes, and the second end 22 and the third end 31 are respectively arranged in the corresponding mounting holes. The driving member 41 can drive the two fixing members 42 to fix the second end 22 and the fixing seat 43, and the third end 31 and the fixing seat 43 at the same time; the driving member 41 can also release the second end 22 and the fixing seat 43, and the third end 31 and the fixing seat 43 at the same time; the driving member 41 can also selectively release the second end 22 and the fixing seat 43 or the third end 31 and the fixing seat 43.

[0059] Specifically, when the driving member 41 drives the two fixing members 42 to simultaneously fix the second end 22 and the fixing seat 43, and the third end 31 and the fixing seat 43, the deformation of the connection between the first torsion bar 2 and the second torsion bar 3 can be reduced, and the torsional rigidity can be improved. When the driving member 41 releases the second end 22 and the fixing seat 43 and the third end 31 and the fixing seat 43 at the same time or releases one of them, the second end 22 and the third end 31 can have relative motion, which increases the deformation of the connection between the first torsion bar 2 and the second torsion bar 3 and reduces the torsional rigidity. Therefore, by fixing the second end 22 and the third end 31 respectively by two fixing members 42, the rigidity of the torsion beam suspension 100 can also be adjusted.

[0060] On the other hand, the present application further provides a vehicle, which includes the above-mentioned torsion beam suspension 100. Specifically, since the vehicle includes the torsion beam suspension 100 described in the above embodiment, it also has the beneficial effects of the above-mentioned torsion beam suspension 100, which will not be repeated here.

[0061] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel" and "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0062] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0063] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A torsion beam suspension, characterized in that: include: A vehicle frame (1), the vehicle frame (1) comprising a first mounting bracket (11), a second mounting bracket (12) and a torsion beam (13), the torsion beam (13) connecting the first mounting bracket (11) and the second mounting bracket (12); a first torsion bar (2), the first torsion bar (2) comprising a first end (21) and a second end (22) arranged opposite to each other, the first end (21) being connected to the first mounting bracket (11); a second torsion bar (3), the second torsion bar (3) comprising a third end (31) and a fourth end (32) arranged opposite to each other, the fourth end (32) being connected to the second mounting bracket (12); A lock-release mechanism (4), the lock-release mechanism (4) connecting the second end (22) and the third end (31), and the lock-release mechanism (4) can be operated to fix the second end (22) and the third end (31); or to release the second end (22) and the third end (31).

2. The torsion beam suspension according to claim 1, characterized in that: The lock-release mechanism (4) comprises a driving member (41) and a fixing member (42) connected to the driving member (41); The second end (22) and the third end (31) are respectively provided with fixing holes (5), and the fixing holes (5) are arranged in alignment; The fixing member (42) passes through the fixing hole (5) or is released from the fixing hole (5) under the driving of the driving member (41).

3. The torsion beam suspension according to claim 2, characterized in that: The second end (22) is provided with a receiving hole (221), and the fixing hole (5) of the second end (22) passes through the receiving hole (221); The third end (31) is provided with a matching shaft (311), and the fixing hole (5) of the third end (31) is arranged on the matching shaft (311); The matching shaft (311) is accommodated in the receiving hole (221).

4. The torsion beam suspension according to claim 2, characterized in that: The lock-release mechanism (4) further comprises a fixing seat (43), wherein the fixing seat (43) comprises a first side wall (431) and a second side wall (432) arranged opposite to each other, and a third side wall (433) connecting the first side wall (431) and the second side wall (432); The fixing seat (43) is provided with a first mounting hole (434) and a second mounting hole (435); the first mounting hole (434) penetrates the first side wall (431) and the second side wall (432); the second end (22) and the third end (31) extend through the first side wall (431) and the second side wall (432) and are accommodated in the first mounting hole (434); The second mounting hole (435) is communicated with the first mounting hole (434) and passes through the third side wall (433); the fixing member (42) is movably disposed in the second mounting hole (435).

5. The torsion beam suspension according to any one of claims 1 to 4, characterized in that: The first torsion bar (2) and the second torsion bar (3) are coaxially arranged along a first axis, and the first axis is parallel to the installation direction of the torsion beam (13).

6. The torsion beam suspension according to claim 5, characterized in that: It also includes a bushing (6), wherein the first end (21) and the fourth end (32) are flexibly connected to the first mounting bracket (11) and the second mounting bracket (12) respectively through the bushing (6).

7. The torsion beam suspension according to claim 6, characterized in that: The first mounting bracket (11) and the second mounting bracket (12) are both provided with a sleeve (14), and each bushing (6) comprises a connecting portion (61) and a fixing portion (62); the connecting portion (61) is flexibly connected to the sleeve (14); The first end (21) and the fourth end (32) are respectively fixed to the corresponding fixing portion (62).

8. The torsion beam suspension according to claim 7, characterized in that: The first end (21) and the fourth end (32) are both provided with a snap-fit ​​spline (7), and the fixing portion (62) is further provided with a mounting groove (621), and the snap-fit ​​spline (7) is mounted in the mounting groove (621); The torsion beam suspension further comprises a mounting pin (8), wherein the mounting pin (8) is mounted on the fixing portion (62) and covers the mounting groove (621).

9. The torsion beam suspension according to claim 1, characterized in that: The lock-release mechanism (4) comprises a fixing seat (43), a driving member (41) and two fixing members (42); The fixing seat (43) is provided with two mounting holes, and the second end (22) and the third end (31) are respectively arranged in the corresponding mounting holes; The driving member (41) drives the two fixing members (42) to simultaneously fix the second end (22) and the fixing seat (43), and the third end (31) and the fixing seat (43); or to simultaneously release or selectively release the second end (22) and the fixing seat (43), and / or the third end (31) and the fixing seat (43).

10. A vehicle, characterized in that: Comprising the torsion beam suspension according to any one of claims 1-9.

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