CN115556824A

CN115556824A - Low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism

Info

Publication number: CN115556824A
Application number: CN202111504320.7A
Authority: CN
Inventors: 张英震; 刘惟栋; 吕斌; 成卫之; 王连悦; 张勇建; 李栋
Original assignee: Shandong Xianhe Automobile Steering Co ltd
Current assignee: Shandong Xianhe Automobile Steering Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2023-01-03

Abstract

The invention relates to the technical field of frame equipment, in particular to a wire-controlled power-assisted steering control hand force simulation mechanism for a low-speed vehicle, which comprises a control panel, a control panel and a control panel, wherein the control panel is arranged on the control panel; the simulation mechanism is assembled at the bottom end of the control disc; and the regulating mechanism is assembled on the control panel, so that the size of the control panel is regulated through a regulating rod on the control panel during operation. When the hand force simulation mechanism is used, an electric control part is cancelled under the condition of ensuring the requirement of steering hand force, and meanwhile, the cost is reduced by three times; the design of the low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism can realize direct connection with the original vehicle pipe column, thereby saving the development cost and reducing the production cost.

Description

Low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism

Technical Field

The invention relates to the technical field of vehicle steering, in particular to a low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism.

Background

At present, an electric power steering structure is adopted during vehicle steering, the trend is mainstream, three main structures of C-EPS, P-EPS and R-EPS are used for loading, a control mechanism and an actuating mechanism of the structures need to adopt mechanical connection to conduct torque, and reverse acting force from the ground can be conducted to the hands of a driver. As the driver's demands for comfort and safety continue to increase, the elimination of the connection between the steering mechanism and the steering mechanism as a solution has also been developed by many steering enterprises. However, most of the steer-by-wire control mechanisms developed by enterprises are mainly in the passenger car market, and in order to meet the requirements of the market on hand strength and vehicle speed, the motors are mostly adopted for hand strength and road feel simulation in the design of the control mechanisms. However, for a special vehicle with a slow speed, which usually does not exceed 20km/h, the vehicle speed can not be output by the special vehicle. The structure can not meet the use requirements of the users from performance and price, and the size of the control disc can not meet the requirements of different personnel.

The steering mechanism of the automobile simulator provided by CN110186698A improves the production cost through a large number of electric control parts, and cannot meet the requirements of groups with different heights on the size of the operating panel.

Disclosure of Invention

Aiming at the problems existing in the prior art, the steer-by-wire power-assisted control hand force simulation mechanism for the low-speed vehicle is provided.

The specific technical scheme is as follows: the hand power road feel simulation is carried out on the control mechanism, and then the power way when the control machine turns to is regulated and controlled, the most comfortable power way of users is guaranteed to be kept, and the requirements of different personnel on the size of the control disc are met.

A control-by-wire power-assisted steering control hand force simulation mechanism for a low-speed vehicle is designed, and comprises a control panel; the simulation mechanism is assembled at the bottom end of the control disc, and meanwhile, the control disc is reset through a resetting device;

and the regulating mechanism is assembled on the control panel, so that the size of the control panel is regulated through a regulating rod on the control panel during operation.

Preferably, the simulation mechanism comprises a rotating shaft, and the rotating shaft is connected with the control disc through a ball bearing.

Preferably, the outer surface of the rotating shaft is provided with a rotatable sleeve.

Preferably, the outer surface of the sleeve is fixedly provided with a connecting block, and one end of the sleeve is connected with a protective shell.

Preferably, the inner cavity of the protective shell is equipped with an angle sensor, and the other end of the protective shell is connected with a sleeve.

Preferably, one end of the rotating shaft penetrates through the protective shell and the sleeve in sequence and extends into the sleeve, and a hole retainer ring is mounted on the outer surface of the rotating shaft.

Preferably, the outer surface of the rotating shaft and the other side of the hole retainer ring are provided with the shaft retainer ring, the inner cavity of the sleeve is provided with a limiting nut, and one end, far away from the rotating shaft, of the limiting nut is connected with a limiting screw.

Preferably, the inner cavity of the sleeve is provided with a reset device, the reset device comprises a fixed friction shaft, a dynamic friction shaft and an elastic mechanism, and two ends of the elastic mechanism are respectively connected with the dynamic friction shaft and the elastic mechanism.

Preferably, a control mechanism is installed at one end of the rotating shaft, a base plate is assembled at the other end of the rotating shaft, and clamping blocks are assembled at two ends of the base plate.

Preferably, the regulating mechanism comprises a regulating sleeve, and one end of the regulating sleeve is connected with the regulating rod.

The technical scheme has the following advantages or beneficial effects: 1

1. When the hand force simulation mechanism is used, an electric control part is cancelled under the condition of ensuring the requirement of steering hand force, and meanwhile, the cost is reduced by three times. The design of the low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism can realize direct connection with the original vehicle pipe column, thereby saving the development cost and reducing the production cost.

2. Meanwhile, the number of turns can be effectively controlled through the size, the thickness and the thread pitch of the limiting nut, hand force simulation is carried out by adopting a matching structure of the dynamic friction shaft and the fixed friction shaft, and the assembly is convenient and simple in structure. And through using three elastic mechanism to connect, guaranteed to turn to hand power and be in balanced state all the time, guarantee to control simultaneously that the dish rotates the back and reset, even if long-time the use, its hand power size still remains stable.

3. In addition, an angle sensor is arranged on the rotating shaft, and the angle and the direction of the steering wheel can be transmitted to the control execution unit in real time. And then guarantee that the low-speed vehicle steer-by-wire helping hand controls hand power simulation mechanism usability stronger, the life-span is higher simultaneously to have personnel's custom otherwise, can adjust the size of controlling the dish.

Drawings

Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.

FIG. 1 is a perspective view of an external structure of an embodiment of the present invention;

FIG. 2 is a front view of the internal structure of the embodiment of the present invention;

FIG. 3 is a front view of the internal structure of the sleeve according to the embodiment of the present invention;

FIG. 4 is an enlarged view of the structure of embodiment A of the present invention;

FIG. 5 is a top view of a control panel according to an embodiment of the present invention;

FIG. 6 is a perspective view of a sleeve structure according to an embodiment of the present invention;

FIG. 7 is a front view of the internal structure of the sleeve according to the embodiment of the present invention;

FIG. 8 is a top view of the internal structure of the sleeve according to an embodiment of the present invention.

The above reference numerals denote: 1. a control panel; 2. a simulation mechanism; 3. a regulating mechanism; 21. a base plate; 22. a rotating shaft; 23. a ball bearing; 24. a sleeve; 25. connecting blocks; 26. a protective shell; 27. an angle sensor; 28. a sleeve; 211. a clamping block; 221. a retainer ring for a bore; 222. a retainer ring for a shaft; 281. a limit nut; 282. a limit screw; 283. a resetting device; 284. a fixed friction shaft; 285. a dynamic friction shaft; 286. an elastic mechanism; 31. adjusting a rod; 32. and (4) adjusting the sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-8, a low-speed vehicle steer-by-wire power-assisted control hand force simulation mechanism comprises a control panel 1;

the simulation mechanism 2 is assembled at the bottom end of the control panel 1, and meanwhile, the control panel 1 is reset through the resetting device 283;

and a regulating mechanism 3 which is assembled on the control panel 1 and regulates the size of the control panel 1 through a regulating rod 31 on the control panel 1 during operation.

As shown in fig. 2, based on the above technical solution, further describing the simulation mechanism 2, the simulation mechanism 2 includes a rotating shaft 22, and the rotating shaft 22 is connected to the control panel 1 through a ball bearing 23.

As shown in fig. 2, based on the above technical solution, further, the rotating shaft 22 is described, and a rotatable sleeve 24 is mounted on an outer surface of the rotating shaft 22.

As shown in fig. 2, based on the above technical solution, further, a sleeve 24 is described, a connecting block 25 is fixedly installed on an outer surface of the sleeve 24, and a protective shell 26 is connected to one end of the sleeve 24.

As shown in fig. 2, based on the above technical solution, further, a protective shell 26 is described, an angle sensor 27 is assembled in an inner cavity of the protective shell 26, and a sleeve 28 is connected to the other end of the protective shell 26.

One end of the rotating shaft 22 penetrates the protective shell 26 and the sleeve 28 in this order and extends into the sleeve 28, and a hole retaining ring 221 is attached to the outer surface of the rotating shaft 22.

As shown in fig. 3, based on the above technical solution, further, the outer surface of the rotating shaft 22 is described, the shaft retainer 222 is installed on the outer surface of the rotating shaft 22 and located on the other side of the hole retainer 221, the inner cavity of the sleeve 28 is assembled with the limit nut 281, and one end of the limit nut 281, which is far away from the rotating shaft 22, is connected with the limit screw 282.

As shown in fig. 3, based on the above technical solution, further describing the inner cavity of the sleeve 28, the inner cavity of the sleeve 28 is equipped with a reset device 283, the reset device 283 includes a fixed friction shaft 284, a dynamic friction shaft 285 and an elastic mechanism 286, and two ends of the elastic mechanism 286 are respectively connected with the dynamic friction shaft 285 and the elastic mechanism 286.

As shown in fig. 1, based on the above technical solution, further describing the rotating shaft 22, the other end of the rotating shaft 22 is equipped with a backing plate 21, and the two ends of the backing plate 21 are equipped with clamping blocks 211.

As shown in fig. 5, based on the above technical solution, further, the adjusting and controlling mechanism 3 is described, the adjusting and controlling device 3 includes an adjusting sleeve 32, one end of the adjusting sleeve 32 is connected with the adjusting rod 31, and the size of the control panel 1 is adjusted and controlled by extending and contracting between the adjusting rod 31 and the adjusting sleeve 32.

Example 1

(1) When the control panel 1 rotates, the rotating shaft 22 is driven to rotate through the ball bearing 23 connected with the control panel 1, the connecting block 25 is installed on a vehicle to steer, meanwhile, the size of the control panel 1 is regulated and controlled through the adjusting rod 31 on the control panel 1 and the adjusting sleeve 32, and then the base plate 21 is pressed through slightly pressing the control panel 2, so that the two clamping blocks 211 are driven to move.

(2) An angle sensor 27 at the upper end of the rotating shaft 22 feeds back the rotating angle of the operating panel 1 to a controller of the actuator in a signal mode;

(3) A limit nut 281 arranged on the rotating shaft 22 moves up and down according to the rotation of the rotating shaft 22, and a limit screw 282 performs positioning and guiding functions on the limit nut 17;

(4) The elastic mechanism 286 compresses through the dynamic friction shaft 285 and the fixed friction shaft 284, and the compression force is adjusted according to the hand force requirement;

(5) The dynamic friction shaft 285 is matched with the rotating shaft 22 through a spline and realizes rotation;

(6) The fixed friction shaft 284 is threadedly mounted inside the sleeve 28 and facilitates resetting of the operating panel 1.

Example 2

An angle sensor 27 at the upper end of the rotary shaft 22 feeds back the angle of rotation of the operating panel 1 to the controller of the actuator in the form of a signal.

The stop nut 17 attached to the rotary shaft 22 moves up and down in accordance with the rotation of the rotary shaft 22, and the stop screw 282 on the sleeve 28 performs a positioning guide function on the stop nut 281.

The number of the elastic mechanisms 286 is 3.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention.

Claims

1. A wire-controlled power-assisted steering control hand force simulation mechanism for a low-speed vehicle is characterized in that a control device is arranged on the vehicle body; the method comprises the following steps:

a control panel (1);

the simulation mechanism (2) is assembled at the bottom end of the control panel (1) and resets the control panel (1) through a resetting device (283);

and the regulating mechanism (3) is assembled on the control panel (1) so as to regulate the size of the control panel (1) through a regulating rod (31) on the control panel (1) during operation.

2. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 1, wherein: the simulation mechanism (2) comprises a rotating shaft (22), and the rotating shaft (22) is connected with the control panel (1) through a ball bearing (23).

3. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 2, wherein: the outer surface of the rotating shaft (22) is provided with a rotatable sleeve (24).

4. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 3, wherein: the outer fixed surface of sleeve pipe (24) installs connecting block (25), the one end of sleeve pipe (24) is connected with protective housing (26).

5. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 4, wherein: an angle sensor (27) is assembled in an inner cavity of the protective shell (26), and a sleeve (28) is connected to the other end of the protective shell (26).

6. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 2, wherein: one end of the rotating shaft (22) penetrates through the protective shell (26) and the sleeve (28) in sequence and extends into the sleeve (28), and a hole retainer ring (221) is installed on the outer surface of the rotating shaft (22).

7. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 2, wherein: the outer surface of the rotating shaft (22) is located on the other side of the hole retainer ring (221) and is provided with a shaft retainer ring (222), the inner cavity of the sleeve (28) is provided with a limiting nut (281), and one end, far away from the rotating shaft (22), of the limiting nut (281) is connected with a limiting screw (282).

8. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 5, wherein: the inner cavity of the sleeve (28) is provided with a resetting device (283), the resetting device (283) comprises a fixed friction shaft (284), a dynamic friction shaft (285) and an elastic mechanism (286), and two ends of the elastic mechanism (286) are respectively connected with the dynamic friction shaft (285) and the elastic mechanism (286).

9. The steer-by-wire power-assisted hand force simulation mechanism of the low-speed vehicle as claimed in claim 2, wherein: control mechanism (29) are installed to the one end of axis of rotation (22), the other end of axis of rotation (22) is equipped with backing plate (21), the both ends of backing plate (21) are equipped with clamp splice (211).

10. The steer-by-wire power-assisted steering hand-force simulation mechanism of the low-speed vehicle as claimed in claim 1, wherein: the regulating mechanism (3) comprises a transmission regulating sleeve (32), and one end of the regulating sleeve (32) is connected with the regulating rod (31).