Torsion beam structure with actively adjustable cross beam and automobile
By introducing chutes, racks, dual output shaft motors and planetary gears into the torsion beam structure, the active adjustment of the beam is solved, and the problem of small adjustment margin of the traditional torsion beam structure is not able to meet the needs of different driving styles, achieving higher adjustment flexibility and cost-effectiveness.
Patent Information
- Application Number
- CN202420060743.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The traditional torsion beam structure cannot actively adjust the beam position and opening direction, resulting in a small adjustment margin, high cost, and cannot meet the needs of different driving styles.
A crossbeam active adjustable torque beam structure is designed. By setting a slide groove and rack on the longitudinal arm of the torsion beam, the crossbeam is moved forward and backward and rotation of the crossbeam using a dual output shaft motor and planetary gear.
It realizes flexible adjustment of the stiffness characteristics of the torsion beam and roll center, increases adjustment margin, reduces development and production costs, and can adapt to the smooth performance needs of different customers.
Smart Images
Figure CN222629052U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile chassis, and more specifically relates to a crossbeam actively adjustable torsion beam structure and an automobile. Background Art
[0002] In order to reduce the cost of parts as much as possible, the rear suspension of models below Class A in the market often adopts a torsion beam structure. The torsion beam suspension is a semi-independent suspension, and its key suspension characteristics (roll stiffness, roll center) are closely related to the layout position and opening direction of the beam, which has a great impact on the vehicle's handling and smoothness.
[0003] Usually in the design stage, the position and opening direction of the beam are determined mainly through benchmarking, layout, and CAE of competing models, and then the tooling mold is made to produce the torsion beam sample, and finally it is applied to the actual vehicle for handling stability and smoothness performance evaluation and adjustment. During the adjustment process, the crossbeam position and opening direction of the torsion beam cannot be adjusted, and the adjustment margin is small. If a suggestion to change the crossbeam is made during the actual vehicle adjustment and certification process, the only way is to change the mold, remake the torsion beam, and then evaluate it, which requires greater cost and cycle, low work efficiency, and may affect the project cycle. During the user's use of the vehicle, if the traditional torsion beam structure is used, it is impossible to actively change the crossbeam position and opening direction, and thus it is impossible to choose your favorite driving style, such as the comfort mode or sports mode provided by the torsion beam.
[0004] The main structure of the traditional torsion beam is as follows Figure 1 As shown: the longitudinal arm 1' and the cross beam 2' are connected by welding method 3, so that the cross beam 2' cannot move relative to the longitudinal arm 1' and the cross beam angle cannot be turned. Utility Model Content
[0005] The purpose of the utility model is to address the deficiencies in the prior art and to provide a torsion beam structure and a vehicle with an actively adjustable crossbeam. The torsion beam structure can actively move in the front-rear direction relative to the torsion beam longitudinal arm, and at the same time, the torsion beam crossbeam can actively rotate in the opening direction, so as to achieve optimal performance and increase the adjustment margin of the torsion beam rear suspension.
[0006] In order to achieve the above object, the utility model provides a torsion beam structure with active adjustable crossbeam, comprising:
[0007] A slide groove is provided on the longitudinal arm of the torsion beam, and the opening direction of the slide groove is the same as the X direction;
[0008] A rack, movably arranged in the slide groove;
[0009] A transition bracket, one end of which is connected to both ends of the rack, and the other end of which is connected to the torsion beam crossbeam;
[0010] A dual-output shaft motor is arranged in the transition bracket, and one end of the dual-output shaft motor is meshedly connected with the rack;
[0011] The planetary gear is arranged on the torsion beam crossbeam, and the other end of the dual output shaft motor is connected to the inner gear ring of the planetary gear.
[0012] Optionally, a sliding block is provided on one side of the torsion beam longitudinal arm close to the torsion beam crossbeam, and the sliding groove is provided in the sliding block.
[0013] Optionally, the slider is provided with a connecting hole, and one end of the dual-output shaft motor passes through the connecting hole and is connected to the rack.
[0014] Optionally, an avoidance hole is provided on the transition bracket, and the avoidance hole does not interfere with the movement trajectory of the slider.
[0015] Optionally, the outer ring gear of the planetary gear is connected to the inner side of the torsion beam crossbeam.
[0016] Optionally, the transition bracket is Y-shaped, the first end and the second end of the transition bracket are respectively connected to the two ends of the rack, and the third end of the transition bracket is inserted into the torsion beam crossbeam.
[0017] Optionally, the inner side of the slider and the outer side of the rack are threadedly connected.
[0018] Optionally, the rack is provided with a first scale line along the length direction.
[0019] Optionally, a second scale line is arranged at the other end of the dual output shaft motor along the circumferential direction.
[0020] The utility model also provides a car, comprising the above-mentioned crossbeam actively adjustable torsion beam structure.
[0021] The utility model provides a torsion beam structure with active adjustable crossbeam and a car, the beneficial effects of which are:
[0022] 1. The adjustable torsion beam structure starts the dual output shaft motor through the motor switch at the driver's seat to achieve the forward and backward movement and rotation of the torsion beam crossbeam, thereby changing the torsion beam stiffness characteristics, roll center, etc.
[0023] 2. The adjustable torsion beam structure can verify and adjust various beam solutions on a real vehicle through a torsion beam, increase the adjustment margin of the torsion beam rear suspension, and achieve ideal stable and smooth handling performance;
[0024] 3. Only one sample of the adjustable torsion beam is needed during the actual vehicle tuning stage, which can greatly reduce the cost of component development and sample production costs and cycles;
[0025] 4. The adjustable torsion beam structure is used in the mass production stage of vehicles. By adjusting the front and rear position and opening direction of the torsion beam crossbeam through the dual output shaft motor, it can meet the needs of different customers for vehicle handling stability and smoothness, such as sports mode and comfort mode.
[0026] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0028] Figure 1 A schematic structural diagram of a traditional torsion beam body is shown.
[0029] Figure 2 A structural schematic diagram of a torsion beam structure with active adjustable crossbeam according to an embodiment of the utility model is shown.
[0030] Figure 3 A parts explosion diagram of a torsion beam structure with active adjustable crossbeam according to an embodiment of the utility model is shown.
[0031] Figure 1 Description of reference numerals:
[0032] 1', longitudinal arm; 2', cross beam.
[0033] Figures 2 to 3 Description of reference numerals:
[0034] 1. Slide; 2. Torsion beam longitudinal arm; 3. Rack; 4. Transition bracket; 5. Torsion beam crossbeam; 6. Dual output shaft motor; 7. Planetary gear; 8. Slider. DETAILED DESCRIPTION
[0035] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0036] The utility model provides a torsion beam structure with active adjustable crossbeam, comprising:
[0037] The slide groove is provided on the longitudinal arm of the torsion beam, and the opening direction of the slide groove is the same as the X direction;
[0038] A rack, movably arranged in the slide groove;
[0039] A transition bracket, one end of which is connected to two ends of the rack, and the other end of which is connected to the torsion beam crossbeam;
[0040] A dual-output shaft motor is arranged in the transition bracket, and one end of the dual-output shaft motor is meshedly connected with the rack;
[0041] The planetary gear is arranged on the torsion beam crossbeam, and the other end of the dual output shaft motor is connected to the inner gear ring of the planetary gear.
[0042] Specifically, the adjustable torsion beam structure is connected to the rack and planetary gear respectively through a dual output shaft motor. When the distance of the torsion beam crossbeam relative to the wheel center needs to be adjusted, one end of the dual output shaft motor rotates, thereby driving the rack to move forward and backward, and finally realizing the front and rear position adjustment of the torsion beam crossbeam; when the shear center of the torsion beam crossbeam needs to be adjusted, the other end of the dual output shaft motor rotates, thereby driving the outer ring gear of the planetary gear to rotate, so that the roll toe changes, thereby changing the handling stability and smoothness of the whole vehicle.
[0043] Optionally, a sliding block is provided on one side of the torsion beam longitudinal arm close to the torsion beam crossbeam, and a sliding groove is provided in the sliding block.
[0044] Optionally, the slider is provided with a connecting hole, and one end of the dual-output shaft motor passes through the connecting hole and is connected to the rack.
[0045] Specifically, a slider is provided on the side of the torsion beam longitudinal arm, the rack is passed through the slide groove on the slider, and the dual output shaft motor is connected to the rack through the connecting hole, so that when the dual output shaft motor rotates, it can drive the rack to move forward and backward.
[0046] Optionally, an avoidance hole is provided on the transition bracket, and the avoidance hole and the movement trajectory of the slider do not interfere with each other.
[0047] Specifically, when the output shaft at one end of the dual-output shaft motor rotates, the rack can be telescopically moved in the slide groove, so that the rack together with the transition bracket moves relative to the slider. In order to avoid affecting the moving range of the rack, it is very effective to open an avoidance hole on the transition bracket.
[0048] Optionally, the outer ring gear of the planetary gear is connected to the inner side of the torsion beam crossbeam.
[0049] Specifically, the planetary gear is arranged between the torsion beam crossbeam and the dual output shaft motor, and the dual output shaft motor is arranged on the transition bracket, so that the other end of the dual output shaft motor is connected to the inner gear ring of the planetary gear, and the outer gear ring of the planetary gear is connected to the torsion beam crossbeam. When the dual output shaft motor rotates, the transition bracket together with the torsion beam longitudinal arm can be rotated relative to the torsion beam crossbeam.
[0050] Optionally, the transition bracket is Y-shaped, the first end and the second end of the transition bracket are respectively connected to the two ends of the rack, and the third end of the transition bracket is inserted into the torsion beam crossbeam.
[0051] Specifically, the transition bracket adopts a Y-shaped structural design, and a first end and a second end are provided on the side of the transition bracket close to the longitudinal arm of the torsion beam, and a third end is provided on the side of the transition bracket close to the crossbeam of the torsion beam. The transition bracket is welded into one piece with the rack. When one end of the dual-output shaft motor rotates, the gear at this end drives the transmission gear in the slide groove to rotate, and the transmission gear in the slide groove engages with the rack for transmission, thereby driving the rack, the transition bracket and the crossbeam of the torsion beam to move forward and backward together.
[0052] Optionally, the inner side of the slider and the outer side of the rack are threadedly connected.
[0053] Specifically, a rotating nut can also be set in the slider, so that one end of the dual-output shaft motor drives the nut in the slider to rotate through the bevel gear transmission, and the nut is threadedly connected to the outer periphery of the rack, so that the rack can move forward and backward relative to the torsion beam longitudinal arm and the slider.
[0054] Optionally, the rack is provided with a first scale line along the length direction.
[0055] Optionally, a second scale line is arranged at the other end of the dual output shaft motor along the circumferential direction.
[0056] Specifically, a first scale line and a second scale line are set on the adjustable torsion beam structure, so that the distance of forward and backward movement and the angle of rotation of the torsion beam crossbeam can be clearly understood, which is convenient for recording data during the debugging stage.
[0057] The utility model also provides a car, comprising the above-mentioned crossbeam actively adjustable torsion beam structure.
[0058] Example
[0059] like Figures 2 to 3 As shown, the utility model provides a torsion beam structure with active adjustable crossbeam, comprising:
[0060] The slide groove 1 is provided on the torsion beam longitudinal arm 2, and the opening direction of the slide groove 1 is the same as the X direction;
[0061] The rack 3 is movably arranged in the slide slot 1;
[0062] A transition bracket 4, one end of which is connected to both ends of the rack 3, and the other end of the transition bracket 4 is connected to the torsion beam 5;
[0063] The dual output shaft motor 6 is arranged in the transition bracket 4, and one end of the dual output shaft motor 6 is meshedly connected with the rack 3;
[0064] The planetary gear 7 is arranged in the torsion beam crossbeam 5 , and the other end of the dual output shaft motor 6 is connected to the inner gear ring of the planetary gear 7 .
[0065] In this embodiment, a sliding block 8 is provided on one side of the torsion beam longitudinal arm 2 close to the torsion beam cross beam 5 , and the sliding groove 1 is provided in the sliding block 8 .
[0066] In this embodiment, the slider 8 is provided with a connecting hole, and one end of the dual-output shaft motor 6 passes through the connecting hole and is connected to the rack 3 .
[0067] In this embodiment, an avoidance hole is provided on the transition bracket 4 , and the avoidance hole and the sliding block 8 do not interfere with each other.
[0068] In this embodiment, the outer ring gear of the planetary gear 7 is connected to the inner side of the torsion beam crossbeam 5 .
[0069] In this embodiment, the transition bracket 4 is Y-shaped, the first end and the second end of the transition bracket 4 are respectively connected to the two ends of the rack 3 , and the third end of the transition bracket 4 is inserted into the torsion beam 5 .
[0070] In this embodiment, the inner side of the slider 8 and the outer side of the rack 3 are connected by threads.
[0071] In this embodiment, the rack 3 is provided with a first scale line along the length direction.
[0072] In this embodiment, a second scale line is arranged at the other end of the dual output shaft motor 6 along the circumferential direction.
[0073] The utility model also provides a car, comprising the above-mentioned crossbeam actively adjustable torsion beam structure.
[0074] In summary, the active adjustable torsion beam structure has a dual output shaft motor 6 between the torsion beam longitudinal arm 2 and the torsion beam crossbeam 5. When the relative distance between the torsion beam crossbeam 5 and the wheel center needs to be adjusted, one end of the dual output shaft motor 6 rotates to move the rack 3 forward and backward relative to the torsion beam longitudinal arm 2, so that the torsion beam crossbeam 5 changes its forward and backward position relative to the torsion beam longitudinal arm 2; when the roll toe needs to be adjusted, the other end of the dual output shaft motor 6 rotates, and the outer ring gear of the planetary gear 7 rotates synchronously, so that the torsion beam crossbeam 5 rotates relative to the transition bracket 4, which can effectively adjust the roll center of the torsion beam suspension.
[0075] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A torsion beam structure with active adjustable crossbeam, characterized in that: include: A slide groove is provided on the longitudinal arm of the torsion beam, and the opening direction of the slide groove is the same as the X direction; A rack, movably arranged in the slide groove; A transition bracket, one end of which is connected to the rack, and the other end of which is connected to the torsion beam crossbeam; A dual-output shaft motor is arranged in the transition bracket, and one end of the dual-output shaft motor is matched with the rack; The planetary gear is arranged in the torsion beam crossbeam, and the other end of the dual output shaft motor is connected to the inner gear ring of the planetary gear.
2. The crossbeam active adjustable torsion beam structure according to claim 1, characterized in that: A sliding block is arranged on one side of the torsion beam longitudinal arm close to the torsion beam crossbeam, and the sliding groove is arranged in the sliding block.
3. The crossbeam active adjustable torsion beam structure according to claim 2, characterized in that: The slider is provided with a connecting hole, and one end of the dual-output shaft motor passes through the connecting hole and is connected to the rack.
4. The crossbeam active adjustable torsion beam structure according to claim 2, characterized in that: The transition bracket is provided with an avoidance hole, and the avoidance hole and the movement trajectory of the slider do not interfere with each other.
5. The crossbeam active adjustable torsion beam structure according to claim 1, characterized in that: The outer ring gear of the planetary gear is connected to the inner side of the torsion beam crossbeam.
6. The crossbeam active adjustable torsion beam structure according to claim 2, characterized in that: The transition bracket is Y-shaped, the first end and the second end of the transition bracket are respectively connected to the two ends of the rack, and the third end of the transition bracket is inserted into the torsion beam crossbeam.
7. The crossbeam active adjustable torsion beam structure according to claim 6, characterized in that: The inner side of the slider and the outer side of the rack are connected by threads.
8. The crossbeam active adjustable torsion beam structure according to claim 1, characterized in that: The rack is provided with a first scale line along the length direction.
9. The crossbeam active adjustable torsion beam structure according to claim 1, characterized in that: The other end of the dual-output shaft motor is provided with a second scale line along the circumferential direction.
10. An automobile, characterized in that: It comprises a crossbeam actively adjustable torsion beam structure according to any one of claims 1-9.