Suspension system and vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicle part manufacturing, and discloses a suspension system and a vehicle. The suspension system comprises a torsion rod spring, a ball pin seat and a swing arm; the torsion rod spring comprises a first section and a second section, the first section is arranged in the first direction, and the second section is bent in the second direction. The ball pin seat comprises a body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are both connected with the body, in the second direction, the first connecting part and the second connecting part are both located on the same side of the body, and the body is used for being connected with a vehicle body in the third direction; the first section is used for being fixedly connected with a vehicle body in the first direction, the second section is movably connected with the first connecting part, the first end of the swing arm is movably connected with the second connecting part, and the second end of the swing arm is used for being connected with an auxiliary frame. The suspension system can adapt to vehicle models with different wheel treads.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle parts manufacturing, and in particular to a suspension system and a vehicle. Background Art

[0002] The suspension system encompasses all the force-transmitting connections between the vehicle frame and the axles or wheels. Currently, the main suspension systems used on vehicles are McPherson struts and double wishbones. The lower control arm dimensions of these two systems are fixed. As the vehicle's track width changes, the lower control arm dimensions also need to be adjusted accordingly, making them incapable of meeting the universal requirements of vehicles with different track widths. Utility Model Content

[0003] In view of this, an embodiment of the present application provides a suspension system and a vehicle. The suspension system of the present application can be adapted to vehicle models with different wheelbases.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a suspension system, including a torsion bar spring, a ball and pin seat, and a swing arm; the torsion bar spring includes a first section and a second section, the first section is arranged along a first direction, and the second section is bent toward a second direction; the ball and pin seat includes a body, a first connecting portion, and a second connecting portion, the first connecting portion and the second connecting portion are both connected to the body, and in the second direction, the first connecting portion and the second connecting portion are both located on the same side of the body, and the body is used to be connected to a vehicle body along a third direction; the first section is used to be fixedly connected to the vehicle body along the first direction, the second section is movably connected to the first connecting portion, the first end of the swing arm is movably connected to the second connecting portion, and the second end of the swing arm is used to be connected to a subframe;

[0006] The first direction, the second direction and the third direction are perpendicular to each other.

[0007] When the suspension system of the embodiment of the present application is in use, when the vehicle body encounters an obstacle and jumps up and down in the third direction (the height direction of the vehicle body), a force is applied to the second section of the torsion bar spring. Because the first section of the torsion bar spring is fixed to the vehicle body, the torsion bar spring rotates a certain angle along its axis, undergoing torsional deformation (elastic deformation). When the vehicle body is free from the obstacle, the energy stored in the elastic deformation of the torsion bar spring is released, causing the force transmission mechanism and the wheel to quickly return to their original position. It is understandable that the embodiment of the present application uses a torsion bar spring instead of a coil spring, thereby saving space near the wheel.

[0008] In addition, since the second section of the torsion bar spring is movably connected to the first connecting part and the first end of the swing arm is movably connected to the second connecting part, when the wheelbase of the vehicle changes, the connection position of the second section of the torsion bar spring and the first connecting part and the connection position of the first end of the swing arm and the second connecting part can be adjusted at the same time, thereby changing the size of the suspension system in the second direction (body width direction) to adapt to vehicle models with different wheelbases.

[0009] In a possible implementation of the present application, the second section is threadedly connected to the first connecting portion; and the first end of the swing arm is threadedly connected to the second connecting portion.

[0010] In the embodiment of the present application, the second section is threadedly connected to the first connection part, and the first end of the swing arm is threadedly connected to the second connection part, so that the connection position of the second section of the torsion bar spring and the first connection part, as well as the connection position of the first end of the swing arm and the second connection part, can be adjusted by rotating the torsion bar spring and the swing arm to adapt to vehicle models with different wheelbases.

[0011] In a possible implementation of the present application, the second section is provided with a first external thread section, the first connecting portion is provided with a first internal thread section, and the second section is threadedly connected to the first internal thread section in the first connecting portion through the first external thread section;

[0012] The first end of the swing arm is provided with a second external thread section, and the second connecting portion is provided with a second internal thread section. The first end of the swing arm is threadedly connected to the second internal thread section in the second connecting portion through the second external thread section.

[0013] The second section of the torsion bar spring in the embodiment of the present application is threadedly connected to the first internal thread section in the first connecting part through the first external thread section, thereby facilitating the adjustment of the connection position between the second section of the torsion bar spring and the first connecting part; the first end of the swing arm is threadedly connected to the second internal thread section in the second connecting part through the second external thread section, thereby facilitating the adjustment of the connection position between the first end of the swing arm and the second connecting part.

[0014] In a possible implementation of the present application, the second section is slidably disposed in the first connecting portion, and further includes a first locking member, the first locking member being used to lock the second section relative to the first connecting portion;

[0015] The first end of the swing arm is slidably disposed in the second connecting portion, and further includes a second locking member, which is used to lock the swing arm and the second connecting portion relative to each other.

[0016] In the embodiment of the present application, the second section of the torsion bar spring is slidably arranged in the first connecting part, so that the relative position of the second section of the torsion bar spring and the first connecting part can be adjusted by means of a sliding connection; after the position is adjusted, the torsion bar spring and the first connecting part can be relatively locked by the first locking member to facilitate normal use.

[0017] By slidably arranging the first end of the swing arm in the second connecting part, the relative position of the swing arm and the second connecting part can be adjusted by means of a sliding connection; after the position is adjusted, the swing arm and the second connecting part can be relatively locked by the second locking member for normal use.

[0018] In one possible implementation of the present application, the first locking member includes a first locking pin, the second section is provided with a first locking hole, the first connecting portion is provided with a plurality of first through holes spaced apart along an extension direction of the first connecting portion, and the first locking pin is passed through the first through hole and the first locking hole to lock the second section relative to the first connecting portion;

[0019] The second locking member includes a second locking pin, a second locking hole is provided on the swing arm, and a plurality of second through holes are provided on the second connecting part and are arranged at intervals along the extension direction of the second connecting part. The second locking pin is passed through the second through hole and the second locking hole to lock the swing arm and the second connecting part relative to each other.

[0020] In the embodiment of the present application, a plurality of first through holes are arranged on the first connecting part, and a first locking hole is arranged on the second section of the torsion bar spring. After the relative position of the second section of the torsion bar spring and the first connecting part is adjusted, the first locking pin can be passed through the corresponding first through hole and the first locking hole to lock the second section of the torsion bar spring relative to the first connecting part.

[0021] By arranging multiple second through holes on the second connecting part and a second locking hole on the first end of the swing arm, when the relative position of the swing arm and the second connecting part is adjusted, the second locking pin can be passed through the corresponding second through holes and second locking holes to lock the swing arm and the second connecting part relative to each other.

[0022] In a possible implementation of the present application, a torsion bar spring fixing bracket is further included, and one end of the first section facing away from the second section is fixedly connected to the torsion bar spring fixing bracket, and the torsion bar spring fixing bracket is used to be detachably connected to the vehicle body.

[0023] The embodiment of the present application facilitates the installation and removal of the torsion bar spring by detachably connecting the torsion bar spring fixing bracket to the vehicle body. The torsion bar spring is fixedly connected to the torsion bar spring fixing bracket to ensure that the torsion bar spring can be torsionally deformed when the vehicle body bounces up and down to form a buffer.

[0024] In a possible implementation of the present application, the torsion bar spring fixing bracket includes a bracket body and a spring fixing plate, and the spring fixing plate is arranged on one side of the bracket body; a fixing hole is provided in the bracket body, and the first section is passed through the fixing hole and fixedly connected to the fixing hole; a plurality of spring fixing through holes are provided on the spring fixing plate, and after the first fastener passes through the spring fixing through holes, the torsion bar spring fixing bracket is detachably connected to the vehicle body to facilitate subsequent maintenance and replacement.

[0025] In this embodiment, the torsion bar spring mounting bracket is removably connected to the vehicle body by a first fastener passing through the spring mounting hole. The first section of the torsion bar spring is secured to the mounting hole within the bracket body via a spline or other structure, ensuring that the torsion bar spring can torsionally deform when the vehicle body bounces up and down, providing a cushioning effect.

[0026] In a possible implementation of the present application, a swing arm fixing bracket is further included, and the second end of the swing arm is connected to the subframe through the swing arm fixing bracket;

[0027] The swing arm fixing bracket includes a swing arm fixing plate and two swing arm connecting plates, the two swing arm connecting plates are arranged opposite to each other on both sides of the swing arm fixing plate, the swing arm connecting plate is provided with a swing arm connecting through hole, the swing arm is provided with two opposite swing arm fixing holes, the second fastener passes through the swing arm connecting through hole and is fixedly connected to the swing arm fixing hole; the swing arm fixing plate is provided with multiple swing arm fixing through holes, and the third fastener passes through the swing arm fixing through holes to detachably connect the swing arm fixing bracket to the subframe.

[0028] In the embodiment of the present application, the second fastener passes through the swing arm connection hole and is fixedly connected to the swing arm fixing hole, thereby achieving a detachable connection between the swing arm and the swing arm connecting plate. The third fastener passes through the swing arm fixing hole and is fixedly connected to the subframe, thereby achieving a detachable connection between the swing arm fixing bracket and the subframe, facilitating subsequent maintenance and replacement.

[0029] In a possible implementation of the present application, an auxiliary fixing frame is further included, which is arranged on a side of the first section close to the second section; the auxiliary fixing frame includes an elastic bushing and a clamp, the elastic bushing is sleeved on the first section, the clamp is located on the outside of the elastic bushing, and the clamp is used to be fixedly connected to the vehicle body.

[0030] In the embodiment of the present application, an auxiliary fixing bracket is provided to improve the stability of the connection between the torsion bar spring and the vehicle body. The auxiliary fixing bracket is mounted on the torsion bar spring via an elastic bushing and is fixedly connected to the vehicle body via a clamp, thereby allowing the torsion bar spring to undergo torsional deformation within the auxiliary fixing bracket, thereby ensuring the normal use of the torsion bar spring.

[0031] An embodiment of the present application also provides a vehicle, comprising any suspension system as described above.

[0032] The vehicle of the embodiment of the present application adopts the above-mentioned suspension system, which not only saves space near the wheels, but also can change the size of the suspension system in the width direction of the vehicle body by adjusting the connection position between the second section of the torsion bar spring and the first connection part, and the connection position between the first end of the swing arm and the second connection part, so as to adapt to the requirements of different wheelbases. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A simplified structural diagram of the suspension system provided in an embodiment of the present application from a first perspective;

[0034] Figure 2 for Figure 1 AA cross-sectional view;

[0035] Figure 3 for Figure 1 BB cross-sectional view;

[0036] Figure 4 A simplified structural diagram of the suspension system provided in an embodiment of the present application from a second perspective;

[0037] Figure 5 for Figure 4 CC cross-sectional view;

[0038] Figure 6 A simplified structural diagram of the suspension system provided in an embodiment of the present application from a third perspective;

[0039] Figure 7 for Figure 6 DD cross-sectional view;

[0040] Figure 8 for Figure 6 EE cross-sectional view;

[0041] Figure 9 An axonometric diagram of a suspension system provided in one embodiment of the present application;

[0042] Figure 10 A simplified structural diagram of a torsion bar spring provided in an embodiment of the present application from a first perspective;

[0043] Figure 11 A simplified structural diagram of a torsion bar spring provided in an embodiment of the present application at a second viewing angle;

[0044] Figure 12 A simplified structural diagram of a torsion bar spring provided in an embodiment of the present application from a third viewing angle;

[0045] Figure 13An axonometric view of a torsion bar spring provided in one embodiment of the present application;

[0046] Figure 14 A simplified structural diagram of a swing arm provided in an embodiment of the present application at a first viewing angle;

[0047] Figure 15 A simplified structural diagram of a swing arm provided in an embodiment of the present application at a second viewing angle;

[0048] Figure 16 A simplified structural diagram of a swing arm provided in an embodiment of the present application from a third viewing angle;

[0049] Figure 17 An axonometric view of a swing arm provided in one embodiment of the present application;

[0050] Figure 18 A simplified structural diagram of a ball and pin seat provided in an embodiment of the present application from a first viewing angle;

[0051] Figure 19 A simplified structural diagram of a ball and pin seat provided in an embodiment of the present application from a second viewing angle;

[0052] Figure 20 A simplified structural diagram of a ball and pin seat provided in one embodiment of the present application from a third viewing angle;

[0053] Figure 21 An axonometric view of a ball and pin seat provided in one embodiment of the present application;

[0054] Figure 22 A simplified structural diagram of a torsion bar spring fixing bracket provided in an embodiment of the present application from a first viewing angle;

[0055] Figure 23 A simplified structural diagram of a torsion bar spring fixing bracket provided in an embodiment of the present application from a second viewing angle;

[0056] Figure 24 A simplified structural diagram of a torsion bar spring fixing bracket provided in an embodiment of the present application from a third viewing angle;

[0057] Figure 25 An axonometric view of a torsion bar spring fixing bracket provided in one embodiment of the present application;

[0058] Figure 26 for Figure 22 FF cross-sectional view;

[0059] Figure 27 A simplified structural diagram of the swing arm fixing bracket provided in one embodiment of the present application from a first viewing angle;

[0060] Figure 28 A simplified structural diagram of the swing arm fixing bracket provided in an embodiment of the present application at a second viewing angle;

[0061] Figure 29 A simplified structural diagram of the swing arm fixing bracket provided in one embodiment of the present application from a third viewing angle;

[0062] Figure 30 An axonometric view of a swing arm fixing bracket provided in one embodiment of the present application;

[0063] Figure 31 A simplified structural diagram of an elastic bushing provided in an embodiment of the present application from a first perspective;

[0064] Figure 32 A simplified structural diagram of the elastic bushing provided in one embodiment of the present application from a second viewing angle;

[0065] Figure 33 A simplified structural diagram of the elastic bushing provided in one embodiment of the present application from a third viewing angle;

[0066] Figure 34 An axonometric view of an elastic bushing provided in one embodiment of the present application;

[0067] Figure 35 A simplified structural diagram of a clamp provided in an embodiment of the present application from a first viewing angle;

[0068] Figure 36 A simplified structural diagram of a clamp provided in an embodiment of the present application at a second viewing angle;

[0069] Figure 37 A simplified structural diagram of a clamp provided in one embodiment of the present application from a third viewing angle;

[0070] Figure 38 This is an axonometric view of a clamp provided in one embodiment of the present application.

[0071] Reference numerals:

[0072] 100-torsion bar spring; 110-first section; 111-first spline; 120-second section;

[0073] 200-ball pin seat; 210-body; 211-seat body; 212-ball pin; 220-first connecting part; 230-second connecting part;

[0074] 300-swing arm; 310-swing arm fixing hole;

[0075] 400 - torsion bar spring fixing bracket; 410 - bracket body; 411 - fixing hole; 4111 - second spline; 420 - spring fixing plate; 421 - spring fixing through hole;

[0076] 500-swing arm fixing bracket; 510-swing arm fixing plate; 511-swing arm fixing through hole; 520-swing arm connecting plate; 521-swing arm connecting through hole;

[0077] 600- auxiliary fixing frame; 610- elastic bushing; 611- bushing through hole; 612- opening; 620- clamp; 621- clamp fixing hole;

[0078] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0079] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0080] In the embodiments 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 the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0081] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0082] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0083] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0084] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0085] As described in the background, the lower control arm dimensions of the suspension system in related art solutions are fixed. As the vehicle's wheelbase changes, the lower control arm dimensions also need to be adjusted accordingly, thus failing to meet the universal requirements of vehicles with different wheelbases. Furthermore, the suspension system typically uses coil springs arranged in the Z direction (the height of the vehicle), which takes up a significant amount of space inside the wheel.

[0086] In view of this, an embodiment of the present application aims to provide a suspension system and a vehicle, wherein the suspension system includes a torsion bar spring, a ball pin seat, and a swing arm, wherein the ball pin seat includes a body, a first connecting portion, and a second connecting portion, wherein the torsion bar spring is movably connected to the first connecting portion, and the first end of the swing arm is movably connected to the second connecting portion. The embodiment of the present application uses a torsion bar spring instead of a coil spring, thereby saving space near the wheel. In addition, when the wheelbase of the vehicle changes, the connection position between the second section of the torsion bar spring and the first connecting portion, and the connection position between the first end of the swing arm and the second connecting portion can be adjusted simultaneously, thereby changing the size of the suspension system in the vehicle body width direction to adapt to vehicle models with different wheelbases.

[0087] Below, embodiments of the present application are described in detail with reference to the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0088] The embodiment of the present application provides a method for assisting the assembly of a vehicle. It should be noted that the vehicle in the present application may refer to a large car, a small car, a special-purpose vehicle, etc. For example, according to the vehicle model, the vehicle in the present application may be a sedan model, an off-road vehicle model, a multi-purpose vehicle (MPV) model or other models. For a vehicle, generally, there are wheels, a body, and a suspension system arranged between the wheels and the body. The suspension system can transmit the force and torque acting between the wheels and the body, and cushion the impact force transmitted to the frame or body by the uneven road surface, while attenuating the vibration caused thereby to ensure that the vehicle can run smoothly.

[0089] It should be noted that in the embodiments of this application, the type of vehicle suspension system is not limited. For example, the suspension system can be an independent suspension system. In the description of the embodiments of this application, the first direction X, the second direction Y, and the third direction Z are three different directions in a three-dimensional space. For example, the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other. The first direction X can be the length direction of the vehicle body, the second direction Y can be the width direction of the vehicle body, and the third direction Z can be the height direction of the vehicle body.

[0090] Please refer to Figure 1-Figure 38 An embodiment of the present application provides a suspension system, including a torsion bar spring 100, a ball and pin seat 200 and a swing arm 300 connected in sequence.

[0091] like Figure 10-13 As shown, the torsion bar spring 100 can be made of spring steel and can have a circular cross-section. The torsion bar spring 100 includes a first section 110 and a second section 120. The first section 110 is arranged along a first direction X, and the second section 120 is bent relative to the first section 110 toward a second direction Y.

[0092] like Figure 3 、 Figure 5 、 Figures 18-21 As shown, the ball pin seat 200 includes a body 210, a first connecting portion 220 and a second connecting portion 230. The first connecting portion 220 and the second connecting portion 230 are both connected to the body 210, and in the second direction Y, the first connecting portion 220 and the second connecting portion 230 are both located on the same side of the body 210. The body 210 is used to be connected to the vehicle body along the third direction Z. For example, Figure 3 and Figure 5 As shown, the main body 210 includes a seat body 211 and a ball pin 212. One end of the ball pin 212 is rotatably disposed in the seat body 211, and the ball pin 212 can be inserted into a corresponding connecting portion on the vehicle body along the third direction Z.

[0093] In the embodiment of the present application, the first section 110 of the torsion bar spring is used to be fixedly connected to the vehicle body along the first direction X, the second section 120 is movably connected to the first connecting portion 220, the first end of the swing arm 300 is movably connected to the second connecting portion 230, and the second end of the swing arm 300 is used to be connected to the subframe.

[0094] When the suspension system of the embodiment of the present application is in use, when the vehicle body encounters an obstacle and bounces up and down in the third direction Z (the height direction of the vehicle body), a force is applied to the second section 120 of the torsion bar spring 100. Since the first section 110 of the torsion bar spring 100 is fixed to the vehicle body, the torsion bar spring 100 rotates a certain angle along its axis, undergoing torsional deformation (elastic deformation). When the vehicle body is free of the obstacle, the energy stored in the elastic deformation of the torsion bar spring 100 is released, causing the force transmission mechanism and the wheel to quickly return to their original position. It can be understood that the embodiment of the present application uses a torsion bar spring 100 instead of a coil spring, thereby saving space near the wheel.

[0095] In addition, since the second section 120 of the torsion bar spring 100 is movably connected to the first connecting portion 220 and the first end of the swing arm 300 is movably connected to the second connecting portion 230, when the wheelbase of the vehicle changes, the connection position between the second section 120 of the torsion bar spring 100 and the first connecting portion 220 and the connection position between the first end of the swing arm 300 and the second connecting portion 230 can be adjusted simultaneously, thereby changing the size of the suspension system in the second direction Y (body width direction) to adapt to vehicle models with different wheelbases.

[0096] In some embodiments, the second section 120 of the embodiment of the present application is threadedly connected to the first connection portion 220 ; the first end of the swing arm 300 is threadedly connected to the second connection portion 230 .

[0097] In the embodiment of the present application, the second section 120 is threadedly connected to the first connection part 220 and the first end of the swing arm 300 is threadedly connected to the second connection part 230. Therefore, the connection position of the second section 120 of the torsion bar spring 100 and the first connection part 220 and the connection position of the first end of the swing arm 300 and the second connection part 230 can be adjusted by rotating the torsion bar spring 100 and the swing arm 300 to adapt to vehicle models with different wheelbases.

[0098] Specifically, the second section 120 is provided with a first external thread section, the first connecting portion 220 is provided with a first internal thread section, and the second section 120 is threadedly connected to the first internal thread section in the first connecting portion 220 through the first external thread section.

[0099] The first end of the swing arm 300 is provided with a second external thread section, and the second connecting portion 230 is provided with a second internal thread section. The first end of the swing arm 300 is threadedly connected to the second internal thread section in the second connecting portion 230 through the second external thread section.

[0100] The second section 120 of the torsion bar spring 100 in the embodiment of the present application is threadedly connected to the first internal thread section in the first connecting part 220 through the first external thread section, thereby facilitating adjustment of the connection position between the second section 120 of the torsion bar spring 100 and the first connecting part 220; the first end of the swing arm 300 is threadedly connected to the second internal thread section in the second connecting part 230 through the second external thread section, thereby facilitating adjustment of the connection position between the first end of the swing arm 300 and the second connecting part 230.

[0101] In some embodiments, the second section 120 of the embodiment of the present application is slidably disposed in the first connecting portion 220 and further includes a first locking member for locking the second section 120 relative to the first connecting portion 220 .

[0102] The first end of the swing arm 300 is slidably disposed in the second connecting portion 230 , and further includes a second locking member for locking the swing arm 300 relative to the second connecting portion 230 .

[0103] In the embodiment of the present application, the second section 120 of the torsion bar spring 100 is slidably arranged in the first connecting portion 220, so that the relative position of the second section 120 of the torsion bar spring 100 and the first connecting portion 220 can be adjusted by a sliding connection; after the position is adjusted, the torsion bar spring 100 and the first connecting portion 220 can be relatively locked by the first locking member for normal use.

[0104] By slidably arranging the first end of the swing arm 300 in the second connecting portion 230, the relative position of the swing arm 300 and the second connecting portion 230 can be adjusted by means of a sliding connection; after the position is adjusted, the swing arm 300 and the second connecting portion 230 can be relatively locked by the second locking member for normal use.

[0105] Specifically, the first locking member includes a first locking pin, a first locking hole is provided on the second section 120, and a plurality of first through holes are provided on the first connecting part 220 and are arranged at intervals along the extension direction of the first connecting part 220. The first locking pin is passed through the first through hole and the first locking hole to lock the second section 120 relative to the first connecting part 220.

[0106] The second locking member includes a second locking pin, a second locking hole is provided on the swing arm 300, and a plurality of second through holes are provided on the second connecting part 230 and are arranged at intervals along the extension direction of the second connecting part 230. The second locking pin is passed through the second through hole and the second locking hole to lock the swing arm 300 and the second connecting part 230 relative to each other.

[0107] In the embodiment of the present application, a plurality of first through holes are provided on the first connecting portion 220 and a first locking hole is provided on the second section 120 of the torsion bar spring 100. After the relative position of the second section 120 of the torsion bar spring 100 and the first connecting portion 220 is adjusted, a first locking pin can be passed through the corresponding first through holes and the first locking hole to lock the second section 120 of the torsion bar spring 100 relative to the first connecting portion 220.

[0108] By setting multiple second through holes on the second connecting part 230 and setting a second locking hole on the first end of the swing arm 300, when the relative position of the swing arm 300 and the second connecting part 230 is adjusted, the second locking pin can be passed through the corresponding second through holes and second locking holes to lock the swing arm 300 and the second connecting part 230 relative to each other.

[0109] Please continue to refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 9 、 Figure 10-13 、 Figure 22-26 In some embodiments, a torsion bar spring fixing bracket 400 is further included, and one end of the first section 110 facing away from the second section 120 is fixedly connected to the torsion bar spring fixing bracket 400, and the torsion bar spring fixing bracket 400 is used for detachable connection with the vehicle body.

[0110] The embodiment of the present application facilitates the installation and removal of the torsion bar spring 100 by detachably connecting the torsion bar spring fixing bracket 400 to the vehicle body. The torsion bar spring 100 is fixedly connected to the torsion bar spring fixing bracket 400 to ensure that the torsion bar spring 100 can be torsionally deformed when the vehicle body bounces up and down, thereby providing a buffer.

[0111] Specifically, the torsion bar spring fixing bracket 400 includes a bracket body 410 and a spring fixing plate 420, which is disposed on one side of the bracket body 410. A fixing hole 411 is defined within the bracket body 410, and the first section 110 is inserted into and fixedly connected to the fixing hole 411. For example, in this embodiment, the first section 110 may be provided with a first spline 111 at the end facing away from the second section 120, and a corresponding second spline 4111 is also provided within the fixing hole 411, with the first section 110 splined to the fixing hole 411. The spring fixing plate 420 is provided with a plurality of spring fixing through-holes 421. A first fastener, after passing through the spring fixing through-holes 421, removably connects the torsion bar spring fixing bracket 400 to the vehicle body, facilitating subsequent repair and replacement. In this embodiment, the first fastener may be, for example, a bolt.

[0112] In this embodiment, a first fastener passes through spring fixing hole 421 and is removably connected to the vehicle body, thereby achieving detachable connection between the torsion bar spring fixing bracket 400 and the vehicle body. The first section 110 of the torsion bar spring 100 is secured to the fixing hole within the bracket body 410 via a spline or other structure, ensuring that the torsion bar spring 100 can torsionally deform when the vehicle body bounces up and down, thereby providing a buffer.

[0113] Please continue to refer to Figure 1 、 Figure 3 、 Figure 14-17 、 Figures 27-30 In some embodiments, a swing arm fixing bracket 500 is further included, and the second end of the swing arm 300 is connected to the sub-frame through the swing arm fixing bracket 500.

[0114] Specifically, the swing arm fixing bracket 500 includes a swing arm fixing plate 510 and two swing arm connecting plates 520. The two swing arm connecting plates 520 are disposed on opposite sides of the swing arm fixing plate 510. The swing arm connecting plates 520 are provided with swing arm connecting through-holes 521. The swing arm 300 is provided with two opposing swing arm fixing holes 310. The second fastener passes through the swing arm connecting through-holes 521 and is fixedly connected to the swing arm fixing holes 310. In this embodiment, the second fastener may be, for example, a bolt. The swing arm fixing plate 510 is provided with multiple swing arm fixing through-holes 511. The third fastener passes through the swing arm fixing through-holes 511 to removably connect the swing arm fixing bracket 500 to the subframe. In this embodiment, the third fastener may be, for example, a bolt.

[0115] In this embodiment of the present application, the second fastener passes through the swing arm connection hole 521 and is fixedly connected to the swing arm fixing hole 310, thereby achieving a detachable connection between the swing arm 300 and the swing arm connecting plate 520. The third fastener passes through the swing arm fixing hole 511 and is fixedly connected to the subframe, thereby achieving a detachable connection between the swing arm fixing bracket 500 and the subframe, facilitating subsequent maintenance and replacement.

[0116] Please continue to refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 8 、 Figure 9 、 Figures 31-38In some embodiments, an auxiliary fixing bracket 600 is further included. The auxiliary fixing bracket 600 is disposed on a side of the first section 110 near the second section 120. The auxiliary fixing bracket 600 includes an elastic bushing 610 and a clamp 620. The elastic bushing 610 defines a bushing through-hole 611 and an opening 612 communicating with the bushing through-hole 611. The first section 110 can pass through the opening 612 and into the bushing through-hole 611, thereby allowing the elastic bushing 610 to be sleeved onto the first section 110. The clamp 620 is located on the outside of the elastic bushing 610 and defines a clamp fixing hole 621. The clamp 620 can be fastened to the vehicle body by passing a fastener such as a bolt through the clamp fixing hole 621.

[0117] In the embodiment of the present application, an auxiliary fixing bracket 600 is provided to improve the stability of the connection between the torsion bar spring 100 and the vehicle body. The auxiliary fixing bracket 600 is mounted on the torsion bar spring 100 via an elastic bushing 610 and is fixedly connected to the vehicle body via a clamp 620, thereby allowing the torsion bar spring 100 to undergo torsional deformation within the auxiliary fixing bracket 600, thereby ensuring the normal use of the torsion bar spring 100.

[0118] An embodiment of the present application also provides a vehicle comprising the above-mentioned suspension system.

[0119] For example, the vehicle of this embodiment may include a vehicle body and a plurality of wheels, for example, four wheels, each of which is connected to the vehicle body via a set of the above-mentioned suspension systems; that is, this embodiment has four independent suspension systems.

[0120] It can be understood that the vehicle of the embodiment of the present application can not only save space near the wheel by adopting the above-mentioned suspension system, but also change the size of the suspension system in the width direction of the vehicle body by adjusting the connection position between the second section of the torsion bar spring and the first connection part, and the connection position between the first end of the swing arm and the second connection part, so as to adapt to the requirements of different wheelbases.

[0121] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A suspension system, characterized in that: The invention comprises a torsion bar spring (100), a ball pin seat (200) and a swing arm (300); the torsion bar spring (100) comprises a first section (110) and a second section (120), the first section (110) is arranged along a first direction, and the second section (120) is bent toward a second direction; the ball pin seat (200) comprises a body, a first connecting portion (220) and a second connecting portion (230), the first connecting portion (220) and the second connecting portion (230) are both connected to the body, and in the second direction, the first connecting portion (220) and the second connecting portion (230) are both located on the same side of the body, and the body is used to be connected to a vehicle body along a third direction; the first section (110) is used to be fixedly connected to the vehicle body along the first direction, the second section (120) is movably connected to the first connecting portion (220), the first end of the swing arm (300) is movably connected to the second connecting portion (230), and the second end of the swing arm (300) is used to be connected to a sub-frame; The first direction, the second direction and the third direction are perpendicular to each other.

2. The suspension system according to claim 1, wherein: The second section (120) is threadedly connected to the first connecting portion (220); and the first end of the swing arm (300) is threadedly connected to the second connecting portion (230).

3. The suspension system according to claim 2, characterized in that The second section (120) is provided with a first external thread section, the first connecting portion (220) is provided with a first internal thread section, and the second section (120) is threadedly connected to the first internal thread section in the first connecting portion (220) through the first external thread section; The first end of the swing arm (300) is provided with a second external thread section, and the second connecting portion (230) is provided with a second internal thread section, and the first end of the swing arm (300) is threadedly connected to the second internal thread section in the second connecting portion (230) through the second external thread section.

4. The suspension system according to claim 1, wherein: The second section (120) is slidably disposed in the first connecting portion (220), and further comprises a first locking member, wherein the first locking member is used to lock the second section (120) relative to the first connecting portion (220); The first end of the swing arm (300) is slidably disposed in the second connecting portion (230), and further comprises a second locking member, wherein the second locking member is used to lock the swing arm (300) relative to the second connecting portion (230).

5. The suspension system according to claim 4, characterized in that The first locking member includes a first locking pin, a first locking hole is provided on the second section (120), a plurality of first through holes are provided on the first connecting portion (220) and are spaced apart along the extending direction of the first connecting portion (220), and the first locking pin is passed through the first through hole and the first locking hole to lock the second section (120) relative to the first connecting portion (220); The second locking member includes a second locking pin, a second locking hole is provided on the swing arm (300), and a plurality of second through holes are provided on the second connecting portion (230) and are arranged at intervals along the extension direction of the second connecting portion (230). The second locking pin is passed through the second through hole and the second locking hole to lock the swing arm (300) and the second connecting portion (230) relative to each other.

6. The suspension system according to any one of claims 1 to 5, characterized in that: It also includes a torsion bar spring fixing bracket (400), one end of the first section (110) facing away from the second section (120) is fixedly connected to the torsion bar spring fixing bracket (400), and the torsion bar spring fixing bracket (400) is used for detachable connection with the vehicle body.

7. The suspension system according to claim 6, wherein: The torsion bar spring fixing bracket (400) comprises a bracket body and a spring fixing plate (420), wherein the spring fixing plate (420) is arranged on one side of the bracket body; a fixing hole (411) is provided in the bracket body, and the first section (110) is passed through the fixing hole (411) and fixedly connected to the fixing hole (411); a plurality of spring fixing through holes (421) are provided on the spring fixing plate (420), and a first fastener passes through the spring fixing through holes (421) to detachably connect the torsion bar spring fixing bracket (400) to the vehicle body.

8. The suspension system according to claim 6, wherein: It also includes a swing arm fixing bracket (500), and the second end of the swing arm (300) is connected to the sub-frame via the swing arm fixing bracket (500); The swing arm fixing bracket (500) comprises a swing arm fixing plate (510) and two swing arm connecting plates (520), the two swing arm connecting plates (520) being arranged oppositely on both sides of the swing arm fixing plate (510), the swing arm connecting plates (520) being provided with a swing arm connecting through hole (521), the swing arm (300) being provided with two opposite swing arm fixing holes (310), the second fastener passing through the swing arm connecting through hole (521) being fixedly connected to the swing arm fixing hole (310); the swing arm fixing plate (510) being provided with a plurality of swing arm fixing through holes (511), the third fastener passing through the swing arm fixing through holes (511) being used to detachably connect the swing arm fixing bracket (500) to the sub-frame.

9. The suspension system according to claim 6, wherein: The invention also includes an auxiliary fixing frame (600), wherein the auxiliary fixing frame (600) is arranged on a side of the first section (110) close to the second section (120); the auxiliary fixing frame (600) includes an elastic bushing (610) and a clamp (620), wherein the elastic bushing (610) is sleeved on the first section (110), and the clamp (620) is located on the outside of the elastic bushing (610), and the clamp (620) is used for being fixedly connected to the vehicle body.

10. A vehicle, characterized in that: Comprising a suspension system as claimed in any one of claims 1 to 9.

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