CN220483402U - Limiting structure of steer-by-wire system - Google Patents
Limiting structure of steer-by-wire system Download PDFInfo
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- CN220483402U CN220483402U CN202322203703.1U CN202322203703U CN220483402U CN 220483402 U CN220483402 U CN 220483402U CN 202322203703 U CN202322203703 U CN 202322203703U CN 220483402 U CN220483402 U CN 220483402U
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Abstract
The application relates to a steering-by-wire system limit structure, which relates to the technical field of steering-by-wire systems of automobiles. The limit structure of the steer-by-wire system comprises a pair of torsion springs which are symmetrically arranged; the pair of hexagonal flanges comprises an outer hexagonal flange and an inner hexagonal flange, and are used for fixing the torsion springs; the shell is connected with the speed reduction structure shell through bolts; and the torsion spring is wound around the output shaft after being twisted to a preset angle. The utility model provides a drive-by-wire steering system limit structure, includes casing, a pair of torsional spring, outer hexagonal flange, interior hexagonal flange, output shaft etc. encircle and carry out spacing locking on the output shaft after the torsional spring changes to predetermineeing the angle to improve drive-by-wire steering system and normally drive reliability and the security in-process in whole car, and can transmit the driving impression that the tradition was turned to.
Description
Technical Field
The application relates to the technical field of automobile steer-by-wire systems, in particular to a limit structure of a steer-by-wire system.
Background
In recent years, the intellectualization, the electrodynamic property and the energy saving of the automobile industry become the main development trend of the current automobile industry, in order to meet the development requirement of the whole automobile, the traditional mechanical hydraulic steering system rapidly develops to the electric steering system, and then the requirement of high intellectualization again promotes the electric steering system to advance to the steer-by-wire system.
In the technical field of the whole car steer-by-wire system, the installation space of the steering system is released to a great extent, but due to mechanical decoupling, a driver can oversteer easily when turning the steering wheel, so that the hand feeling simulator at the lower end of the steering wheel is required to be subjected to corner limiting so as to meet driving requirements and design requirements.
The current limit system generally adopts a compact-structure transmission mode, however, the arrangement scheme has a certain defect that the torsional spring needs to be positioned when being installed, so that the consistency of forward and reverse steering angles can be met, and the problem of rigidity, noise, vibration and harshness (Noise, vibration, harshness), namely NVH (noise vibration harshness) of the torsional spring in the rotating process is solved.
Therefore, it is desirable to provide a steering-by-wire system limiting structure, including casing, a pair of torsional springs, outer hexagonal flange, interior hexagonal flange, output shaft etc. to encircle and carry out spacing locking on the output shaft after the torsional spring turns to preset angle to improve the reliability and the security of steering-by-wire system in whole car normal driving process, and can transmit the driving impression that traditional turned to.
Disclosure of Invention
According to some embodiments of the present application, a steer-by-wire system limit structure is provided, which may include a pair of torsion springs; the pair of hexagonal flanges comprises an outer hexagonal flange and an inner hexagonal flange, and are used for fixing the torsion springs; the pair of torsion springs are symmetrically arranged about the outer hexagonal flange; the shell is connected with the speed reduction structure shell through bolts; and the torsion spring is wound around the output shaft after being twisted to a preset angle.
In some embodiments, the pair of torsion springs are equal-pitch torsion springs, and the axial distances of the corresponding points of adjacent working rings of the equal-pitch torsion springs on the pitch diameter are equal.
In some embodiments, the constant pitch torsion spring may be a variable stiffness torsion spring having different operating ring stiffness at different locations in the axial direction.
In some embodiments, the constant pitch torsion spring may be a variable coil diameter torsion spring having different working coil diameters at different locations in the axial direction.
In some embodiments, the steering-by-wire system limiting structure is based on a rotation angle of a steering wheel, and the torsion spring is wound around the output shaft to limit after rotating to a preset angle so as to control the rotation angle.
In some embodiments, the preset angle presets a corresponding safety angle threshold according to different application scenarios.
In some embodiments, the symmetrically placed pair of equal pitch torsion springs provide the same damping when rotated side-to-side, respectively.
In some embodiments, rotation of the output shaft rotates one of the equal-pitch torsion springs in tandem, the other of the equal-pitch torsion springs providing the same amount of torque in opposite directions.
In some embodiments, the pair of torsion springs are coaxially disposed.
In some embodiments, the pair of torsion springs are disposed in overlapping relation.
The utility model provides a drive-by-wire steering system limit structure, includes casing, a pair of torsional spring, outer hexagonal flange, interior hexagonal flange, output shaft etc. encircle and carry out spacing locking on the output shaft after the torsional spring changes to predetermineeing the angle to improve drive-by-wire steering system and normally drive reliability and the security in-process in whole car, and can transmit the driving impression that traditional turned to.
Drawings
For a better understanding and to set forth of some embodiments of the present application, reference will now be made to the description of embodiments taken in conjunction with the accompanying drawings in which like reference numerals identify corresponding parts throughout.
FIG. 1 is an exemplary block diagram of a steer-by-wire system limit structure provided in accordance with some embodiments of the present application.
Detailed Description
The following description with reference to the accompanying drawings is provided to facilitate a comprehensive understanding of the various embodiments of the present application defined by the claims and their equivalents. These embodiments include various specific details for ease of understanding, but these are to be considered exemplary only. Accordingly, those skilled in the art will appreciate that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions will be omitted herein for brevity and clarity of description.
The terms and phrases used in the following specification and claims are not limited to a literal sense, but rather are only used for the purpose of clarity and consistency in understanding the present application. Thus, it will be appreciated by those skilled in the art that the descriptions of the various embodiments of the present application are provided for illustration only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which embodiments of the present application are shown, it being apparent that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It is noted that the terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in this application refers to and encompasses any or all possible combinations of one or more of the associated listed items. The expressions "first", "second", "said first" and "said second" are used for modifying the respective elements irrespective of order or importance, and are used merely for distinguishing one element from another element without limiting the respective elements.
The embodiment of the application provides a limit structure of a steer-by-wire system. In order to facilitate understanding of the embodiments of the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
FIG. 1 is an exemplary block diagram of a steer-by-wire system limit structure provided in accordance with some embodiments of the present application. As shown in fig. 1, the limit structure of the steer-by-wire system may include an inner hexagonal flange (1), a housing (2), an equal pitch torsion spring (3), an outer hexagonal flange (4), an outer hexagonal locking bolt (5) and an output shaft (6). The inner hexagonal flange (1) is used for fixing the torsion spring. The shell (2) is connected with the speed reduction structure shell through bolts. The equal pitch torsion springs (3) are symmetrically arranged, and in some embodiments, the equal pitch torsion springs (3) include, but are not limited to, a variable stiffness torsion spring, a variable coil diameter torsion spring, a variable stiffness variable coil diameter torsion spring, or the like. The outer hexagonal flange (4) is used for fixing the torsion spring with equal pitch. The outer hexagonal locking bolt (5) is used for connecting the shell. The output shaft (6) is used for corner control, and based on the rotation angle of the steering wheel, when the equal-pitch torsion spring (3) twists and rotates to a preset angle, the equal-pitch torsion spring (3) is encircling on the output shaft (6) to limit.
According to some embodiments of the present application, the steer-by-wire system limit structure may include a pair of torsion springs; the pair of hexagonal flanges comprises an outer hexagonal flange and an inner hexagonal flange, and are used for fixing the torsion springs; the pair of torsion springs are symmetrically arranged about the outer hexagonal flange; the shell is connected with the speed reduction structure shell through bolts; and the torsion spring is wound around the output shaft after being twisted to a preset angle. In some embodiments, the pair of torsion springs are coaxially arranged and overlap to realize a limiting function, and the two torsion springs arranged in an overlapping mode are smaller in arrangement space and less in abrasion to parts.
In some embodiments, the pair of torsion springs are equal-pitch torsion springs, and the axial distances of the corresponding points of adjacent working rings of the equal-pitch torsion springs on the pitch diameter are equal. As an example, the equal-pitch torsion spring is a variable-rigidity torsion spring, and the rigidity of the working rings of different parts of the variable-rigidity torsion spring in the axial direction is different. For another example, the constant pitch torsion spring is a variable-coil-diameter torsion spring, and the working coil diameters of different parts of the variable-coil-diameter torsion spring in the axial direction are different.
In some embodiments, the steering-by-wire system limiting structure is based on a rotation angle of a steering wheel, and the torsion spring is wound around the output shaft to limit after rotating to a preset angle so as to control the rotation angle. The preset angle can preset corresponding safety angle thresholds according to different application scenes. As an example, the safety angle threshold may be determined according to design requirements of an application scenario, and the safety angle threshold may be the same as a steering wheel steering threshold. For example, when the left and right steering wheel angles are limited to 90 degrees in a special application scene, the safety angle threshold is a closed section of +/-90 degrees, and the like. The symmetrically placed pair of equal pitch torsion springs can respectively provide the same damping when rotating left and right. When the output shaft rotates, one of the equal-pitch torsion springs rotates together, and the other equal-pitch torsion spring can provide the same torque in the opposite direction.
According to some embodiments of the present application, a steer-by-wire system is provided that employs the steer-by-wire system limit structure that includes a pair of equal pitch torsion springs. The drive-by-wire steering system is limited through the drive-by-wire steering system limit structure, the drive-by-wire steering system limit structure is based on the rotation angle of the steering wheel, and the torsion spring is rotated to a preset angle and then is surrounded on the output shaft to limit so as to control the rotation angle.
Example 1
FIG. 1 is an exemplary block diagram of a steer-by-wire system limit structure provided in accordance with some embodiments of the present application. As shown in FIG. 1, a practical limit structure of steering simulator system, after the steering wheel rotates, output shaft (6) drives torsional spring (3) and rotates based on the rotation angle of steering wheel, and torsional spring (3) can encircle on output shaft (6) after rotating to predetermineeing the position and be used for realizing stopping continuing the purpose that turns to, including two torsional springs (3) that the symmetry was placed in the limit structure, work as the torsional spring is controlled rotatory can provide the same damping, just fix through the flange between two torsional springs, the torsional spring other end is fixed respectively at casing (2) and axle head.
According to some embodiments of the application, the steer-by-wire system is limited through the steer-by-wire system limiting structure, the steer-by-wire system limiting structure is based on the rotation angle of the steering wheel, and the torsion spring is rotated to a preset angle and then surrounds the output shaft to limit so as to control the rotation angle. As an example, when the steering wheel rotates, according to the preset angle requirement, the output shaft (6) rotates, the synchronous connecting belt rotates one torsion spring, the other torsion spring provides the same torque in the opposite direction, and the torsion spring (3) is encircling on the output shaft (6) after rotating to the preset angle so as to achieve the locking purpose.
It should be noted that the above description of the limit structure of the steer-by-wire system is only for convenience of description, and is not intended to limit the application to the scope of the illustrated embodiments. It will be understood by those skilled in the art that various modifications and changes in form and detail of the functions of implementing the above-described apparatus and operations may be made to the individual structures in any combination or constituent sub-structures with other structures without departing from the principles of the present apparatus based on the principles. For example, the steer-by-wire system limiting structure may further include a self-locking structure or the like. Such variations are within the scope of the present application.
To sum up, the drive-by-wire steering system limit structure of this application includes casing, a pair of torsional spring, outer hexagonal flange, interior hexagonal flange, output shaft etc. encircle and carry out spacing locking on the output shaft after the torsional spring changes to predetermineeing the angle to improve drive-by-wire steering system reliability and security in whole car normal driving in-process, and can transmit the driving impression that traditional turned to.
It should be noted that the above-described embodiments are merely examples, and the present application is not limited to such examples, but various changes may be made.
It should be noted that in this specification the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing disclosure is only illustrative of some of the preferred embodiments of the present application and is not intended to limit the scope of the claims hereof, as persons of ordinary skill in the art will understand that all or part of the structures described herein may be implemented and that equivalent changes may be made to the embodiments described herein, which are intended to fall within the scope of the claims herein.
Claims (10)
1. A drive-by-wire steering system limit structure, characterized by comprising:
a pair of torsion springs;
the pair of hexagonal flanges comprises an outer hexagonal flange and an inner hexagonal flange, and are used for fixing the torsion springs; the pair of torsion springs are symmetrically arranged about the outer hexagonal flange;
the shell is connected with the speed reduction structure shell through bolts;
and the torsion spring is wound around the output shaft after being twisted to a preset angle.
2. The steer-by-wire system limiting structure of claim 1, wherein: the pair of torsion springs are equal-pitch torsion springs, and the axial distances of the corresponding points of the adjacent working rings of the equal-pitch torsion springs on the pitch diameter are equal.
3. The steer-by-wire system limiting structure according to claim 2, wherein: the constant-pitch torsion spring is a rigidity-variable torsion spring, and the rigidities of the working rings of different parts of the rigidity-variable torsion spring in the axial direction are different.
4. A steer-by-wire system limit structure according to any one of claims 2 or 3, wherein: the constant-pitch torsion spring is a variable-coil-diameter torsion spring, and the working coil diameters of different parts of the variable-coil-diameter torsion spring in the axial direction are different.
5. The steer-by-wire system limiting structure of claim 4, wherein: the limiting structure of the steer-by-wire system is based on the rotation angle of the steering wheel, and the torsion spring surrounds the output shaft to limit after rotating to a preset angle so as to control the rotation angle.
6. The steer-by-wire system limiting structure of claim 5, wherein: the preset angle presets a corresponding safety angle threshold according to different application scenes.
7. The steer-by-wire system limiting structure of claim 5, wherein: the pair of equal-pitch torsion springs symmetrically arranged provide damping with the same size when rotating left and right.
8. The steer-by-wire system limiting structure of claim 7, wherein: when the output shaft rotates, one of the equal-pitch torsion springs rotates together, and the other equal-pitch torsion spring provides the same torque in the opposite direction.
9. The steer-by-wire system limiting structure of claim 1, wherein: the pair of torsion springs are coaxially disposed.
10. The steer-by-wire system limiting structure of claim 9, wherein: the pair of torsion springs are arranged in an overlapping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322203703.1U CN220483402U (en) | 2023-08-16 | 2023-08-16 | Limiting structure of steer-by-wire system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322203703.1U CN220483402U (en) | 2023-08-16 | 2023-08-16 | Limiting structure of steer-by-wire system |
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| Publication Number | Publication Date |
|---|---|
| CN220483402U true CN220483402U (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322203703.1U Active CN220483402U (en) | 2023-08-16 | 2023-08-16 | Limiting structure of steer-by-wire system |
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| Country | Link |
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| CN (1) | CN220483402U (en) |
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- 2023-08-16 CN CN202322203703.1U patent/CN220483402U/en active Active
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