CN212950807U - Compensating mechanism of power-assisted steering system, power-assisted steering system and automobile - Google Patents
Compensating mechanism of power-assisted steering system, power-assisted steering system and automobile Download PDFInfo
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- CN212950807U CN212950807U CN202021376159.0U CN202021376159U CN212950807U CN 212950807 U CN212950807 U CN 212950807U CN 202021376159 U CN202021376159 U CN 202021376159U CN 212950807 U CN212950807 U CN 212950807U
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Abstract
The utility model discloses a power assisted steering system's compensating mechanism, power assisted steering system and car, power assisted steering system include the helping hand motor, connect in the worm gear mechanism of the output shaft of helping hand motor, and the worm in the worm gear mechanism is connected in the output shaft of helping hand motor to worm wheel and the worm meshing in the worm gear are connected with the steering mechanism transmission of car. Wherein, compensation mechanism still includes: a drive member and a push rod assembly. One end of the push rod component is in transmission connection with an output shaft of the driving component, and the other end of the push rod component can be abutted against a worm of the worm gear mechanism; the driving component drives the push rod component to move along the length direction of the push rod component, so that the other end of the push rod component is far away from or close to the worm, the meshing friction force of the worm gear mechanism is adjusted, and the running stability of the automobile can be guaranteed.
Description
Technical Field
The utility model relates to an automotive filed especially relates to a power assisted steering system's compensating mechanism, power assisted steering system and car.
Background
In the design and development process of an automobile steering system, the steering system is transited from a mechanical steering system to a hydraulic power-assisted steering system, but the hydraulic power-assisted steering system also has own defects. The electric power-assisted steering system can act on a steering device after being amplified by a speed reducing mechanism through a motor parameter power-assisted moment, overcomes a steering resistance moment together with the operation moment of a driver, and realizes the steering motion of a vehicle. In the conventional power steering system, a steering assistance curve set by a steering debugging engineer is released as the steering performance of the whole vehicle, and once the steering performance of the vehicle is released, the steering performance of the vehicle is a fixed index, but the steering force cannot be changed under various driving conditions, such as road conditions (low-attachment, high-attachment and unpaved roads) or certain specific driving conditions (sudden stop, EPS failure mode and full acceleration).
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the power-assisted steering system steering power among the prior art can not be adjusted. Provided are a compensation mechanism for a power steering system, and an automobile, which can adjust the steering force of the power steering system.
In order to solve the above problem, an embodiment of the present invention provides a compensation mechanism for a power steering system, where the power steering system includes a power motor and a worm and gear mechanism connected to an output shaft of the power motor, a worm in the worm and gear mechanism is connected to the output shaft of the power motor, and a worm wheel in the worm and gear mechanism is engaged with the worm and is in transmission connection with a steering mechanism of the automobile; further comprising:
a drive member;
one end of the push rod component is in transmission connection with an output shaft of the driving component, and the other end of the push rod component can abut against a worm of the worm gear mechanism; wherein,
the driving component drives the push rod component to move along the length direction of the push rod component, so that the other end of the push rod component is far away from or close to the worm, and the meshing friction force of the worm gear mechanism is adjusted.
By adopting the technical scheme, the compensation mechanism in the embodiment is provided with the driving component and the push rod component, so that the push rod component can be driven by the driving component to be linked with the worm on the power-assisted motor to move relative to the worm wheel in the using process so as to adjust the meshing force between the worm wheel and the worm in the worm-gear mechanism, and the power-assisted steering system can adjust the steering force of the power-assisted steering system by adopting the compensation mechanism with the structure.
Further, another embodiment of the present invention provides a compensation mechanism for a power steering system, wherein the push rod assembly includes a push rod and an elastic member, the one end of the push rod is connected to the one end of the elastic member, the other end of the push rod is connected to the output shaft of the driving member, and the other end of the elastic member is connected to the end of the power motor.
By adopting the technical scheme, the push rod assembly is arranged in the structure, and in the using process, the driving component can drive the push rod to be far away from or close to the elastic piece so as to adjust the elastic force of the elastic piece, and further enable the elastic piece to apply different elastic forces on the worm so as to ensure that the meshing force between the worm wheel and the worm in the worm gear mechanism is in a stable state.
In addition, the force generated by the elastic element has better flexibility, so that the stability of the power steering system can be further improved by adopting the elastic element.
Further, another embodiment of the present invention provides a compensation mechanism of a power steering system, wherein the output shaft of the driving member is provided with a first connecting portion, and the push rod is provided with a second connecting portion; wherein,
the first connecting portion and the second connecting portion are in transmission connection, and the output shaft is linked with the push rod to move in the length direction of the push rod through the first connecting portion and the second connecting portion.
Further, another embodiment of the present invention provides a compensation mechanism of a power steering system, wherein the compensation mechanism comprises a first compensation member and a second compensation member
The first connecting part is a first worm gear formed on an output shaft of the driving member, and the second connecting part is a second worm gear formed at the one end of the push rod and in fit engagement with the first worm gear.
By adopting the technical scheme, the worm gear transmission mechanism is a structure common to those skilled in the art, and the first connecting part and the second connecting part are set to be in common worm gear transmission in the embodiment, so that the producibility of the compensation mechanism in the embodiment can be ensured.
Further, another embodiment of the present invention provides a compensation mechanism of a power steering system, wherein the compensation mechanism comprises a first compensation member and a second compensation member
The axial direction of the output shaft of the driving component is parallel to the axial direction of the output shaft of the power-assisted motor;
the length direction of the push rod is perpendicular to the length direction of the worm wheel and perpendicular to the rotation axis direction of the worm wheel.
By adopting the technical scheme, the output shaft of the driving component is arranged to be parallel to the axis of the output shaft of the power-assisted motor, and the arrangement of the structure can ensure that the compensation mechanism is easier to arrange in the installation process.
Further, another embodiment of the present invention provides a compensation mechanism for a power steering system, wherein the elastic member is a spring, the push rod has a boss formed at one end thereof, and the spring has an end engaged with the boss.
Further, another embodiment of the present invention provides a compensation mechanism of a power steering system, wherein the driving member is a linear motor or a stepping motor.
Further, another embodiment of the present invention provides a power steering system, which includes a power motor, and a worm gear mechanism connected to an output shaft of the power motor, wherein a worm in the worm gear mechanism is connected to the output shaft of the power motor, and a worm wheel in the worm gear mechanism is engaged with the worm and is in transmission connection with a steering mechanism of the vehicle; the compensation mechanism with the structure is also included; wherein,
and the power-assisted motor and a driving component of the compensation mechanism are fixedly arranged on a body frame of the automobile.
By adopting the technical scheme, the power-assisted steering system in the embodiment comprises the compensation mechanism with the structure, the compensation mechanism is provided with the driving component and the push rod component, in the using process, the push rod component can be driven by the driving component to be linked with the worm on the power-assisted motor to move relative to the worm wheel so as to adjust the meshing force between the worm wheel and the worm in the worm wheel and worm mechanism, and the power-assisted steering system adopts the compensation mechanism with the structure and can adjust the steering force of the power-assisted steering system.
Further, another embodiment of the present invention provides an automobile, including a vehicle control unit and the power steering system with the above structure, wherein the vehicle control unit is in communication connection with the compensation mechanism, and controls the compensation mechanism according to the vehicle information of the automobile.
By adopting the technical scheme, the automobile in the embodiment adopts the power steering system with the structure, and the steering force of the power steering system can be adjusted according to the vehicle information of the automobile, so that the running stability of the automobile can be ensured.
Further, another embodiment of the present invention provides an automobile, wherein the vehicle information includes: the system comprises vehicle speed information, wheel speed information, power motor working state information, steering angle information, steering torque information and steering speed information.
Other features and corresponding advantages of the invention are set forth in the following part of the specification, and it is to be understood that at least some of the advantages become apparent from the description of the invention.
Drawings
Fig. 1 is a schematic view of an installation structure of a compensation mechanism provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a compensation mechanism provided in embodiment 1 of the present invention.
Description of reference numerals:
10: an automotive power steering system;
100: a booster motor;
200: a worm gear;
300: a worm;
400: a compensation mechanism;
410: a drive member;
420: a push rod assembly;
421: a spring;
422: a push rod; 4221: a second worm gear; 4222: a boss;
423: a first worm gear.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1:
the embodiment of the present invention provides a compensation mechanism 400 of an automobile power steering system, as shown in fig. 1-2, an automobile power steering system 10 includes a power motor 100, a worm gear mechanism connected to an output shaft of the power motor 100, a worm 300 in the worm gear mechanism is connected to the output shaft of the power motor 100, and a worm wheel 200 in the worm gear mechanism is meshed with the worm 300 and is in transmission connection with a steering mechanism of an automobile.
Further, the compensation mechanism 400 in the present embodiment further includes: a drive member 410 and a push rod assembly 420. One end of the push rod assembly 420 is in transmission connection with the output shaft of the driving member 410, and the other end can abut against the worm 300 of the worm gear mechanism; the driving member 410 drives the push rod assembly 420 to move along the length direction of the push rod assembly 420 so that the other end of the push rod assembly 420 moves away from or close to the worm 300 to adjust the engagement friction of the worm gear mechanism.
Specifically, the compensation mechanism 400 of the present embodiment includes the driving member 410 and the push rod assembly 420, so that the push rod assembly 420 can be driven by the driving member 410 to move the worm 300 on the power assisting motor 100 relative to the worm wheel 200 to adjust the meshing force between the worm wheel 200 and the worm 300 in the worm and gear mechanism during use, and the power steering system can adjust the steering force of the power steering system by using the compensation mechanism 400 with such a structure.
More specifically, the specific structures of the push rod assembly 420 and the driving member 410 are explained below, and will not be described in detail herein.
Further, another embodiment of the present invention provides a compensation mechanism 400 of an automobile power steering system, as shown in fig. 1-2, the push rod assembly 420 includes a push rod 422 and an elastic member, one end of the push rod 422 abuts against one end of the elastic member, the other end of the push rod 422 is in transmission connection with an output shaft of the driving member 410, and the other end of the elastic member abuts against an end of the worm 300 away from the power motor 100.
Specifically, the push rod assembly 420 is configured in such a way that, during use, the driving member 410 can drive the push rod 422 to move away from or close to the elastic member to adjust the elastic force of the elastic member, so that the elastic member can apply different elastic forces to the worm 300 to ensure that the meshing force between the worm wheel 200 and the worm 300 in the worm and gear mechanism is in a stable state.
More specifically, since the force generated by the elastic member has a good flexibility, the use of the elastic member can further improve the stability of the steering assist system.
Further, in another embodiment of the present invention, a compensating mechanism 400 of an automobile power steering system is provided, as shown in fig. 1-2, wherein a first connecting portion is provided on an output shaft of a driving member 410, and a second connecting portion is provided on a push rod 422.
Specifically, the first connecting portion and the second connecting portion are in transmission connection, and the output shaft is linked to the push rod 422 through the first connecting portion and the second connecting portion to move in the length direction of the push rod 422.
Further, another embodiment of the present invention provides a compensating mechanism 400 of an automobile power steering system, as shown in fig. 1-2, the first connecting portion is a first worm gear 423 formed on an output shaft of the driving member 410, and the second connecting portion is a second worm gear 4221 formed at one end of the push rod 422 and adapted to engage with the first worm gear 423.
Specifically, in the present embodiment, since the worm gear transmission mechanism is a structure that is common to those skilled in the art, the first connection portion and the second connection portion are configured to be common in the worm gear transmission, so that the producibility of the compensation mechanism 400 in the present embodiment can be ensured.
Further, another embodiment of the present embodiment provides a compensating mechanism 400 of an automobile power steering system, as shown in fig. 1-2, in which an axial direction of an output shaft of a driving member 410 is parallel to an axial direction of an output shaft of a booster motor 100; the length direction of the push rod 422 is perpendicular to the length direction of the worm 300 and perpendicular to the rotational axis direction of the worm wheel 200.
Specifically, in the present embodiment, the output shaft of the driving member 410 is arranged parallel to the axis of the output shaft of the booster motor 100, and this arrangement ensures that the compensating mechanism 400 can be more easily arranged during the installation process.
Further, another embodiment of the present invention provides a compensating mechanism 400 of an automobile power steering system, as shown in fig. 1-2, the elastic member is a spring 421, a boss 4222 is formed at one end of the push rod 422, and one end of the spring 421 is clamped with the boss 4222.
Specifically, in the present embodiment, a boss 4222 is provided at one end of the push rod 422, and the boss 4222 can be used to abut against the end of the spring 421, so as to ensure that the push rod 422 can effectively apply pressure to the spring 421 during the movement process.
Further, another embodiment of the present embodiment provides a compensating mechanism 400 of an automobile power steering system, as shown in fig. 1-2, wherein the driving member 410 is configured as a linear motor or a stepping motor.
Specifically, in the present embodiment, the driving member 410 may be a linear motor or a stepping motor. When the driving member 410 is a linear motor, it may be any one of various types of linear motors, such as a TC75S587F type linear motor, a Y2UJZ0 type linear motor, etc., which are commonly known to those skilled in the art; when the driving member 410 is a stepping motor, it may be any one of various types of stepping motors, such as a 24BYJ48 type stepping motor, a 17HS8401B type stepping motor, which are commonly known to those skilled in the art, and the above can be set according to actual design and use requirements, which is not limited in this embodiment.
The embodiment of the present invention provides a compensation mechanism 400 of an automobile power steering system, as shown in fig. 1-2, an automobile power steering system 10 includes a power motor 100, a worm gear mechanism connected to an output shaft of the power motor 100, a worm 300 in the worm gear mechanism is connected to the output shaft of the power motor 100, and a worm wheel 200 in the worm gear 200 and the worm 300 is engaged with the worm 300 and is in transmission connection with a steering mechanism of an automobile. Wherein, the compensation mechanism 400 further comprises: a drive member 410 and a push rod assembly 420. One end of the push rod assembly 420 is in transmission connection with the output shaft of the driving member 410, and the other end can abut against the worm 300 of the worm gear mechanism; the driving member 410 drives the push rod assembly 420 to move along the length direction of the push rod assembly 420 so that the other end of the push rod assembly 420 moves away from or close to the worm 300 to adjust the engagement friction of the worm gear mechanism.
Example 2:
an embodiment of the present invention provides an automobile power steering system 10, please refer to fig. 1 and fig. 2 in example 1, which includes a power motor 100, a worm gear mechanism connected to an output shaft of the power motor 100, a worm 300 in the worm gear mechanism being connected to the output shaft of the power motor 100, and a worm wheel 200 in the worm gear mechanism being engaged with the worm 300 and being in transmission connection with a steering mechanism of an automobile; further comprising the compensation mechanism 400 of embodiment 1; the assist motor 100 and the driving member 410 of the compensating mechanism 400 are both fixedly mounted on the body frame of the vehicle.
Specifically, since the power steering system 10 of the present embodiment includes the compensation mechanism 400 of embodiment 1, and the compensation mechanism 400 has the driving member 410 and the push rod assembly 420, during use, the push rod assembly 420 can be driven by the driving member 410 to move the worm 300 on the linkage power motor 100 relative to the worm wheel 200 to adjust the meshing force between the worm wheel 200 and the worm 300 in the worm and gear mechanism, and the power steering system adopts the compensation mechanism 400 with such a structure, so that the steering force of the power steering system can be adjusted.
Example 3:
further, the embodiment of the present invention provides an automobile, please refer to fig. 1 and fig. 2 in example 1, and includes a vehicle control unit (not shown in the figure) and the automobile power steering system 10 in example 2, wherein the vehicle control unit is communicatively connected to the compensating mechanism 400, and controls the compensating mechanism 400 according to the vehicle information of the automobile.
Specifically, since the vehicle in this embodiment employs the power steering system in example 2, and the steering force of the power steering system can be adjusted according to the vehicle information of the vehicle, the running stability of the vehicle can be ensured.
Further, another embodiment of the present invention provides an automobile, wherein the vehicle information includes: vehicle speed information, wheel speed information, power motor 100 operating state information, steering angle information, steering torque information, and steering speed information.
It should be understood that in the present embodiment, the vehicle speed information, the wheel speed information, the operation state information of the assist motor 100, the steering angle information, the steering torque information, and the steering speed information are obtained in a similar manner to the prior art, and this embodiment is not explained in detail.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A compensation mechanism of a power-assisted steering system comprises a power-assisted motor and a worm gear mechanism connected to an output shaft of the power-assisted motor, wherein a worm in the worm gear mechanism is connected to the output shaft of the power-assisted motor, and a worm wheel in the worm gear mechanism is meshed with the worm and is in transmission connection with a steering mechanism of an automobile; it is characterized by also comprising:
a drive member;
one end of the push rod component is in transmission connection with an output shaft of the driving component, and the other end of the push rod component can abut against a worm of the worm gear mechanism; wherein,
the driving component drives the push rod component to move along the length direction of the push rod component, so that the other end of the push rod component is far away from or close to the worm, and the meshing friction force of the worm gear mechanism is adjusted.
2. A compensating mechanism for a power assisted steering system according to claim 1, wherein the push rod assembly comprises a push rod and an elastic member, one end of the push rod abuts against one end of the elastic member, the other end of the push rod is in transmission connection with the output shaft of the driving member, and the other end of the elastic member abuts against the end of the worm shaft away from the power assisted motor.
3. A compensating mechanism for a power assisted steering system according to claim 2, wherein the output shaft of the drive member is provided with a first coupling portion and the push rod is provided with a second coupling portion; wherein,
the first connecting portion and the second connecting portion are in transmission connection, and the output shaft is linked with the push rod to move in the length direction of the push rod through the first connecting portion and the second connecting portion.
4. A compensating mechanism for a power assisted steering system according to claim 3, wherein
The first connecting part is a first worm gear formed on an output shaft of the driving member, and the second connecting part is a second worm gear formed at the one end of the push rod and in fit engagement with the first worm gear.
5. A compensating mechanism for a power assisted steering system according to claim 4, wherein
The axial direction of the output shaft of the driving component is parallel to the axial direction of the output shaft of the power-assisted motor;
the length direction of the push rod is perpendicular to the length direction of the worm wheel and perpendicular to the rotation axis direction of the worm wheel.
6. The compensating mechanism of a power steering system according to claim 5, wherein the elastic member is a spring, and the one end of the push rod is formed with a boss, and one end of the spring is engaged with the boss.
7. A compensating mechanism for a power assisted steering system according to any of claims 1 to 6, in which the drive member is provided as a linear motor or a stepper motor.
8. A power-assisted steering system comprises a power-assisted motor and a worm and gear mechanism connected to an output shaft of the power-assisted motor, wherein a worm in the worm and gear mechanism is connected to the output shaft of the power-assisted motor, and a worm wheel in the worm and gear mechanism is meshed with the worm and is in transmission connection with a steering mechanism of an automobile; characterized in that it further comprises a compensation mechanism according to any one of claims 1 to 7; wherein,
and the power-assisted motor and a driving component of the compensation mechanism are fixedly arranged on a body frame of the automobile.
9. An automobile comprising a vehicle control unit, characterized by further comprising the power steering system of claim 8, wherein the vehicle control unit is in communication with the compensating mechanism and controls the compensating mechanism according to vehicle information of the automobile.
10. The automobile of claim 9, wherein the vehicle information comprises: the system comprises vehicle speed information, wheel speed information, power motor working state information, steering angle information, steering torque information and steering speed information.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021376159.0U CN212950807U (en) | 2020-07-14 | 2020-07-14 | Compensating mechanism of power-assisted steering system, power-assisted steering system and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021376159.0U CN212950807U (en) | 2020-07-14 | 2020-07-14 | Compensating mechanism of power-assisted steering system, power-assisted steering system and automobile |
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| CN212950807U true CN212950807U (en) | 2021-04-13 |
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| CN202021376159.0U Active CN212950807U (en) | 2020-07-14 | 2020-07-14 | Compensating mechanism of power-assisted steering system, power-assisted steering system and automobile |
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