An anti-pitching vehicle chassis structure

Abstract

The present invention is applicable to the field of automotive chassis functional components, and provides an anti-pitching vehicle chassis structure. This structure is installed at the front end and the rear end of the vehicle chassis, and the control logics of the two sets of structures are opposite. The anti-pitching vehicle chassis structure includes: a subframe installed on the main frame, and a first cross-axis of the subframe and a second cross-axis of the subframe are further provided on the subframe; an anti-pitching rod, the middle part of the anti-pitching rod is movably connected to the subframe; and an anti-pitching component provided on the anti-pitching rod, and the anti-pitching component is used for connecting the anti-pitching rod with the vehicle body and between the anti-pitching rod and the second cross-axis of the subframe. The present invention can perform the required anti-pitching or anti-lifting actions according to the current working conditions of the vehicle, thereby realizing the anti-pitching function, and has a simple structure, and can be customized in a variety of ways according to different vehicle sizes and uses.

Description

Technical Field

[0001] The invention relates to the field of automobile chassis functional components, in particular to an anti-pitch vehicle chassis structure. Background Art

[0002] With the development of economy and technology in various countries, more and more people choose to buy cars as their daily means of transportation. Car buyers are all over the world, and the road conditions they face are also different. The road surface roughness of users' driving roads varies greatly, which has brought great troubles to various car manufacturers. If you want the vehicle to drive smoothly on roads with high road roughness, you must make the suspension as soft as possible, but the consequence of doing so is that the vehicle will "lift its head" during sudden acceleration and "nod" during sudden braking. Once the vehicle has a serious pitch, the comfort of the driver and passengers will be greatly reduced, and the driver's ability to control the vehicle will be greatly reduced at this time, which is very likely to cause dangerous conditions, thus leading to traffic accidents.

[0003] How to increase the anti-pitch stiffness of the vehicle at a low cost has become a problem faced by many automobile manufacturers. In addition, the anti-pitch chassis structure should be highly versatile, easy to install and disassemble, or customized for different vehicle types. For example, a sedan or sports car with strong acceleration capability requires stronger anti-pitch capability, while a special-purpose vehicle traveling at a low speed can appropriately reduce the demand for anti-pitch capability. In view of the above situation, it is urgent to provide an anti-pitch vehicle chassis structure to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide an anti-pitch vehicle chassis structure, aiming to solve the problems in the above technical background.

[0005] The present invention is implemented as follows: an anti-pitch vehicle chassis structure, which is installed at the front end and the rear end of the vehicle chassis, and the two sets of structural control logic are opposite, and the anti-pitch vehicle chassis structure includes:

[0006] A sub-frame mounted on the main frame, wherein the sub-frame is further provided with a first sub-frame transverse axis and a second sub-frame transverse axis;

[0007] an anti-pitch rod, the middle portion of which is movably connected to the sub-frame; and

[0008] An anti-pitch assembly is arranged on the anti-pitch rod, and the anti-pitch assembly is used for connecting the rear end of the anti-pitch rod and the vehicle body and the front end of the anti-pitch rod and the second transverse axis of the sub-frame.

[0009] As a further solution of the present invention: the auxiliary frame is fixed to the main frame by welding.

[0010] As a further solution of the present invention: a T-shaped structure is provided in the middle of the anti-pitching rod, and the T-shaped structure is fixedly welded to the anti-pitching rod.

[0011] As a further solution of the present invention: there is a welding lug on the first transverse axis of the subframe, and the lug is movably connected to the T-shaped structure.

[0012] As a further solution of the present invention: the anti-pitching assembly includes:

[0013] A two-way damping device for realizing the anti-pitching function, and three groups of the two-way damping devices are provided;

[0014] A two-way damping placement platform provided at the front end of the anti-pitching rod, and a first circular groove for placing the lower part of the two-way damping device is opened on the two-way damping placement platform;

[0015] A square groove is opened at the bottom of the vehicle body, and two groups of second circular grooves for placing the upper part of the two-way damping device are opened in the square groove;

[0016] A two-way damping placement groove is opened at the rear end of the anti-pitching rod, and a group of two-way damping devices are installed in the two-way damping placement groove; and

[0017] A motor push-pull rod fixedly installed on the second transverse axis of the subframe, and the motor push-pull rod is connected to the two-way damping device in the two-way damping placement groove.

[0018] As a further solution of the present invention: the size of the damping placement platform is smaller than the size of the square groove.

[0019] As a further solution of the present invention: two groups of the two-way damping devices are provided at the front end of the anti-pitching rod, and one group is provided at the rear end of the anti-pitching rod.

[0020] As a further solution of the present invention: the T-shaped structure and the anti-pitching rod are also provided with reinforcing ribs.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] For this kind of anti-pitching vehicle chassis structure, the control strategy is simple. The VCU measures the vehicle's overall acceleration through the body acceleration sensor, thereby judging the current working condition of the vehicle. Subsequently, the VCU sends a signal to the push-pull rod motor controller, and the push-pull rod motor controller controls the motor push-pull rod to move up or down, and the up and down distances are controlled by the push-pull rod motor controller, so that the two-way damping device works, achieving the anti-pitching or anti-reeling action required by the vehicle under the current working condition, thereby completing the anti-pitching work;

[0023] In terms of structure, the subframe is fixedly connected to the main frame by welding. The anti-pitching rod is movably connected to the subframe through a lug, and the connection is detachable. It has a simple structure and can be customized in a variety of ways according to different vehicle sizes and uses. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0025] Figure 2 It is a partial schematic diagram of the connection between the first horizontal axis of the subframe and the middle part of the anti-pitching rod in an embodiment of the present invention.

[0026] Figure 3 It is a partial enlarged schematic structural diagram of an embodiment of the present invention.

[0027] Figure 4 It is a partial bottom-up schematic structural diagram of an embodiment of the present invention.

[0028] Figure 5 It is a working flowchart of an embodiment of the present invention.

[0029] In the drawings: subframe 1, anti-pitching rod 2, main frame 3, lug 4, first horizontal axis of the subframe 5, bi-directional damping device 6, bi-directional damping placement platform 7, square groove 8, second circular groove 9, bi-directional damping placement groove 10, second horizontal axis of the subframe 11, motor push-pull rod 12. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The following describes the specific implementation of the present invention in detail with specific embodiments.

[0031] Please refer to Figures 1 - 5 , an anti-pitching vehicle chassis structure provided by an embodiment of the present invention, which is installed at the front end and the rear end of the vehicle chassis, and the control logics of the two sets of structures are opposite. The anti-pitching vehicle chassis structure includes:

[0032] A subframe 1 installed on the main frame 3, and a first horizontal axis 5 and a second horizontal axis 11 of the subframe are further provided on the subframe 1;

[0033] An anti-pitching rod 2, the middle part of which is movably connected to the subframe 1; and

[0034] An anti-pitching component disposed on the anti-pitching rod 2, which is used for connecting between the rear end of the anti-pitching rod 2 and the vehicle body and between the front end of the anti-pitching rod 2 and the second cross-axis 11 of the subframe.

[0035] In an embodiment of the present invention, the anti-pitching component is also connected to the VCU; for this anti-pitching vehicle chassis structure, the control strategy is simple. The VCU can measure the vehicle's overall acceleration through the vehicle body acceleration sensor, thereby determining the current working condition of the vehicle. Subsequently, the VCU will control the anti-pitching component to achieve the anti-pitching or anti-reeling action required by the vehicle under the current working condition and complete the anti-pitching work. In terms of structure, the subframe 1 is fixedly connected to the main frame 3 by welding, and the anti-pitching rod 2 is movably connected to the subframe 1 through the lug 4, and the connection is detachable, with a simple structure and can be customized in various ways according to different vehicle sizes and uses.

[0036] In an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the subframe 1 and the main frame 3 are fixedly connected by welding;

[0037] The middle part of the anti-pitching rod 2 is provided with a T-shaped structure, and the T-shaped structure is fixedly connected to the anti-pitching rod 2 by welding;

[0038] There is a welded lug 4 on the first cross-axis 5 of the subframe, and the lug 4 is movably connected to the T-shaped structure, and this connection is detachable.

[0039] In this embodiment, the T-shaped structure itself is also formed by welding. First, the "one" - shaped part on its upper part is installed inside the lug 4, and then the "|" - shaped part is welded and fixed to the "one" - shaped part.

[0040] In an embodiment of the present invention, please refer to Figures 1 - 4 , the anti-pitching component includes:

[0041] A two-way damping device 6 for realizing the anti-pitching function, and three groups of the two-way damping devices 6 are provided;

[0042] A two-way damping placement platform 7 disposed at the front end of the anti-pitching rod 2, and a first circular groove (not shown in the figure) for placing the lower part of the two-way damping device 6 is opened on the two-way damping placement platform 7;

[0043] A square groove 8 is opened at the bottom of the vehicle body, and two groups of second circular grooves 9 for placing the upper part of the two-way damping device 6 are opened in the square groove 8;

[0044] A two-way damping placement groove 10 is opened at the rear end of the anti-pitching rod 2, and a group of two-way damping devices 6 are installed in the two-way damping placement groove 10; and

[0045] The motor push rod 12 is fixedly installed on the second transverse axis 11 of the subframe, and the motor push rod 12 is connected to the bi-directional damping device 6 in the bi-directional damping placement groove 10;

[0046] The size of the damping placement platform 7 is smaller than that of the square groove 8, and the two cannot interfere with each other during the pitching motion of the vehicle, otherwise the anti-pitching function will fail;

[0047] Two groups of the bi-directional damping devices 6 are arranged at the front end of the anti-pitching rod 2, and one group is arranged at the rear end of the anti-pitching rod 2.

[0048] In this embodiment, the bi-directional damping device 6 installed in the second circular groove 9 is not shown in the drawings; the motor push rod 12 is controlled by the VCU; a push rod motor controller for controlling the working state of the motor of the motor push rod 12 is also included, and the push rod motor controller adopts the existing public technology and will not be elaborated here;

[0049] The VCU measures the vehicle acceleration through the vehicle body acceleration sensor, thereby judging the current working condition of the vehicle. Subsequently, the VCU sends a signal to the push rod motor controller, and the push rod motor controller controls the motor push rod 12 to move up or down, and the up and down distances are controlled by the push rod motor controller, so that the bi-directional damping device 6 works, achieving the anti-pitching or anti-reeling action required by the vehicle under the current working condition, thereby completing the anti-pitching work;

[0050] Different customizations are carried out on vehicles with different uses. For example, for sedans and sports cars with strong acceleration ability, stronger anti-pitching ability is required. The bi-directional damping device 6 with larger damping can be used, and a push rod motor with a larger power is replaced, and the installation position of the subframe 1 and the length of the anti-pitching rod 2 are reasonably adjusted according to the vehicle wheelbase; for special function vehicles with low-speed driving, the requirement for anti-pitching ability can be appropriately reduced, and the bi-directional damping device 6 with smaller damping can be used, and a push rod motor with general power can be replaced, which can improve the applicability of the anti-pitching vehicle chassis structure.

[0051] In an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the T-shaped structure and the anti-pitching rod 2 are also provided with reinforcing ribs for improving the strength and stiffness of the entire anti-pitching rod 2.

[0052] To sum up, the working principle of the present invention is (please refer to the attached Figure 5)(The VCU measures the vehicle's acceleration through the vehicle body acceleration sensor to determine the current working condition of the vehicle. Subsequently, the VCU sends a signal to the push rod motor controller, which controls the motor push rod 12 to move up or down, and the up and down distances are controlled by the push rod motor controller, enabling the two-way damping device 6 to work, achieving the anti-dive or anti-pitch actions required by the vehicle under the current working condition, thereby completing the anti-pitch work.)

[0053] (In the present invention, unless otherwise clearly specified and defined, terms such as "sliding", "rotating", "fixing", "provided with", etc. should be understood in a broad sense. For example, it can be a welded connection, a bolt connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.)

[0054] (The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.)

Claims

1. An anti-pitch vehicle chassis structure, which is installed at the front end and the rear end of the vehicle chassis, and the control logics of the two sets of structures are opposite. The anti-pitch vehicle chassis structure includes: A subframe installed on the main frame, and a first cross-axis of the subframe and a second cross-axis of the subframe are further provided on the subframe, characterized in that it further includes: An anti-pitching rod, the middle part of the anti-pitching rod is movably connected to the subframe; and An anti-pitching component provided on the anti-pitching rod, the anti-pitching component is used for connecting between the rear end of the anti-pitching rod and the vehicle body and between the front end of the anti-pitching rod and the second cross-axis of the subframe.

2. The anti-pitching vehicle chassis structure according to claim 1, characterized in that, The subframe is fixedly welded to the main frame.

3. The anti-pitching vehicle chassis structure according to claim 1, characterized in that, The middle part of the anti-pitching rod is provided with a T-shaped structure, and the T-shaped structure is fixedly welded to the anti-pitching rod.

4. The anti-pitching vehicle chassis structure according to claim 3, characterized in that, There is a welding lug on the first cross-axis of the subframe, and the lug is movably connected to the T-shaped structure.

5. The anti-pitching vehicle chassis structure according to claim 1, characterized in that, The anti-pitching component includes: A bidirectional damping device for realizing the anti-pitching function, and three groups of the bidirectional damping devices are provided; A bidirectional damping placement platform provided at the front end of the anti-pitching rod, and a first circular groove for placing the lower part of the bidirectional damping device is opened on the bidirectional damping placement platform; A square groove opened at the bottom of the vehicle body, and two groups of second circular grooves for placing the upper part of the bidirectional damping device are opened in the square groove; A bidirectional damping placement groove opened at the rear end of the anti-pitching rod, and a group of bidirectional damping devices are installed in the bidirectional damping placement groove; and A motor push-pull rod fixedly installed on the second cross-axis of the subframe, and the motor push-pull rod is connected to the bidirectional damping device in the bidirectional damping placement groove.

6. The anti-pitching vehicle chassis structure according to claim 5, characterized in that, The size of the damping placement platform is smaller than the size of the square groove.

7. The anti-pitching vehicle chassis structure according to claim 5, characterized in that, Two groups of the bidirectional damping devices are provided at the front end of the anti-pitching rod, and one group is provided at the rear end of the anti-pitching rod.

8. The anti-pitching vehicle chassis structure according to claim 3, characterized in that, The T-shaped structure and the anti-pitching rod are further provided with reinforcing ribs.

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