Steering gear electromagnetic damping steering adjustment mechanism

Abstract

The present invention relates to the technical field of steering gears, and in particular to an electromagnetic damping steering adjustment mechanism for a steering gear, wherein an electromagnetic damper is sleeved on a steering connecting shaft, the electromagnetic damper and a steering encoder are both fixedly mounted on a steering gear frame, the electromagnetic damper and the steering encoder are spaced apart, one end of the steering connecting shaft is connected to the steering encoder via a coupling, the other end of the steering connecting shaft is fixedly connected to a steering wheel, and an angle limiting mechanism for limiting the axial rotation angle of the steering connecting shaft is provided on the steering gear frame. The beneficial effects of the present invention are as follows: the steering positioning accuracy of the present invention is high, the steering damping is adjustable, the steering connecting shaft is connected to the steering encoder, the steering encoder provides the obtained angle value information to the vehicle controller for use, the damping of the electromagnetic damper can be adjusted according to the user's experience, so that the steering gear has better force feedback; the angle limiting mechanism realizes the control of the steering limit position of the left and right axial rotation of the steering connecting shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of steering gears, and in particular to an electromagnetic damping steering adjustment mechanism of a steering gear. Background Art

[0002] As a key component of vehicle control, the steering gear plays a vital role in ensuring safe and reliable driving. Steering gear manufacturers have always pursued optimal production costs, ease of maintenance, and driving experience. Producing a steering gear structure that offers high reliability and a superior driving experience is particularly important.

[0003] Common steering mechanisms include mechanical power steering, electric power steering, and hydraulic power steering. Mechanical power steering relies on a purely mechanical mechanism, occupies a large volume, has poor positioning accuracy, poor operating conditions, is prone to noise during driving, is physically demanding, provides a poor user experience, and easily fatigues people after working for long periods of time. The steering wheel has poor directionality, and the driver relies entirely on their own driving feel to control the vehicle. It is usually used in the field of small agricultural machinery. Electric power steering usually indirectly supplies oil to the hydraulic system through an electric motor. The entire steering system is highly complex, and the control system requires a high reliability design, resulting in high costs and low cost-effectiveness. It is usually used in the field of small cars. Hydraulic power steering directly provides steering power to the vehicle's steering cylinder through a hydraulic steering valve. It has a simple structure, but low steering control accuracy, poor driving experience, and high requirements for the vehicle's hydraulic system. The system has a large working space and is usually used in the field of heavy machinery with slow driving speeds and low requirements for driving experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an electromagnetic damping steering adjustment mechanism for a steering gear, which has high steering positioning accuracy, adjustable steering damping and high reliability.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A steering gear electromagnetic damping steering adjustment mechanism includes a steering gear frame, a steering wheel, a steering connecting shaft, a steering encoder and an electromagnetic damper, the electromagnetic damper is sleeved on the steering connecting shaft, the electromagnetic damper and the steering encoder are both fixed on the steering gear frame, the electromagnetic damper and the steering encoder are arranged at intervals, one end of the steering connecting shaft is connected to the steering encoder through a coupling, and the other end of the steering connecting shaft is fixedly connected to the steering wheel, and the steering gear frame is provided with an angle limiting mechanism for limiting the axial rotation angle of the steering connecting shaft.

[0006] The beneficial effects of the present invention are: the steering positioning accuracy of the present invention is high, the steering damping is adjustable, the steering connecting shaft is connected to the steering encoder, and the steering encoder provides the obtained angle value information to the vehicle controller for use. During the operation of the steering gear, the electromagnetic damper works to realize the debugging of the steering force. The damping of the electromagnetic damper can be adjusted according to the user's usage experience to make the steering machine have better force feedback; by setting an angle limiting mechanism, the steering limit position of the left and right axial rotation of the steering connecting shaft can be controlled.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the angle limiting mechanism includes a lower limit member and an upper limit member arranged at intervals along the length direction of the steering connecting shaft. The part of the steering connecting shaft arranged between the upper limit member and the lower limit member is a connecting shaft screw segment provided with an external thread. A slider is threadedly connected to the connecting shaft screw segment. The slider moves up and down on the connecting shaft screw segment during the rotation of the steering connecting shaft. The upper limit member and the lower limit member are fixed on the steering gear frame to limit the up and down movement of the slider.

[0009] The beneficial effect of adopting the above further solution is that the rotation of the steering connecting shaft drives the slider to move up and down, and by setting the lower limit member and the upper limit member, the up and down movement of the slider is restricted, thereby achieving the limitation of the rotation angle of the steering connecting shaft.

[0010] Furthermore, a guide member having a length direction identical to that of the steering connecting shaft is provided between the upper limit member and the lower limit member, and the sliding block is slidably connected to the guide member.

[0011] The beneficial effect of adopting the above further solution is that the provision of the guide member can guide the sliding of the slider and prevent the slider from rotating.

[0012] Furthermore, the upper limit member and the lower limit member are limit plates sleeved on the steering connecting shaft, and the upper limit member and the lower limit member are both clearance-matched with the steering connecting shaft. The guide members are provided on both sides of the steering connecting shaft, and the slider is slidably connected to the guide members on both sides of the steering connecting shaft.

[0013] The beneficial effect of adopting the above further scheme is that the upper limit member and the lower limit member adopt limit plates mounted on the steering connecting shaft, which facilitates the provision of guide members on both sides of the steering connecting shaft, and providing guide members on both sides of the steering connecting shaft can make the up and down movement of the slider smoother.

[0014] Furthermore, the guide member is a guide rod, both ends of the guide rod are fixedly connected to the upper limit member and the lower limit member respectively, and the slider is slidably mounted on the guide rod.

[0015] The beneficial effect of adopting the above further solution is that: the guide member adopts a guide rod, the slider is slidably sleeved on the guide rod, and the guide rod limits the rotation of the slider.

[0016] Furthermore, the guide member is a guide rail fixedly arranged on the steering gear frame, and the slider is slidably arranged on the guide rail.

[0017] The beneficial effect of adopting the above further solution is that the guide rail is slidably connected to the slider, thereby limiting the rotation of the slider.

[0018] Furthermore, a steering neutral magnet is provided on the side wall of the slider, and a steering neutral sensor for sensing the position of the steering neutral magnet is provided on the steering mechanism.

[0019] The beneficial effect of adopting the above further solution is that the provision of the steering center position sensor and the steering center position magnet can achieve precise control and information collection of the steering center position during steering control.

[0020] Furthermore, the steering gear frame is a long strip structure, the length direction of the steering connecting shaft is the same as the length direction of the steering gear frame, the steering encoder and the electromagnetic damper are respectively arranged at both ends of one side of the steering gear frame, and the angle limiting mechanism is arranged between the steering encoder and the electromagnetic damper.

[0021] The beneficial effects of adopting the above further solution are: compact structure, small size and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Steering wheel; 2. Steering connecting shaft; 3. Connecting shaft screw segment; 4. Steering neutral magnet; 5. Steering neutral sensor; 6. Coupling; 7. Steering encoder; 8. Steering gear frame; 9. Lower limit member; 10. Guide member; 11. Slider; 12. Upper limit member; 13. Electromagnetic damper. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1As shown, an embodiment of the present invention includes a steering gear frame 8, a steering wheel 1, a steering connecting shaft 2, a steering encoder 7 and an electromagnetic damper 13, wherein the electromagnetic damper 13 is sleeved on the steering connecting shaft 2, the electromagnetic damper 13 and the steering encoder 7 are both fixedly mounted on the steering gear frame 8, the electromagnetic damper 13 and the steering encoder 7 are spaced apart, one end of the steering connecting shaft 2 is connected to the steering encoder 7 through a coupling 6, and the other end of the steering connecting shaft 2 is fixedly connected to the steering wheel 1, and an angle limiting mechanism for limiting the axial rotation angle of the steering connecting shaft 2 is provided on the steering gear frame 8, the steering gear frame 8 is a long strip structure, the length direction of the steering connecting shaft 2 is the same as the length direction of the steering gear frame 8, the steering encoder 7 and the electromagnetic damper 13 are respectively arranged at both ends of one side of the steering gear frame 8, and the angle limiting mechanism is arranged between the steering encoder 7 and the electromagnetic damper 13.

[0027] During vehicle driving, steering force feedback is an important design aspect. The embodiment of the present invention adds an electromagnetic damper 13 to the steering connecting shaft 2 and adjusts the damping coefficient of the electromagnetic damper 13 to adjust the feedback force of the vehicle steering, thereby meeting the user's demand for feedback.

[0028] In an embodiment of the present invention, the angle limiting mechanism includes a lower limit member 9 and an upper limit member 12 arranged at intervals along the length direction of the steering connecting shaft 2. The part of the steering connecting shaft 2 between the upper limit member 12 and the lower limit member 9 is a connecting shaft screw segment 3 with an external thread. A slider 11 is threadedly connected to the connecting shaft screw segment 3. The slider 11 moves up and down on the connecting shaft screw segment 3 during the rotation of the steering connecting shaft 2. The upper limit member 12 and the lower limit member 9 are fixed on the steering gear frame 8 to limit the up and down movement of the slider 11. The rotation of the steering connecting shaft 2 drives the up and down movement of the slider 11. By setting the lower limit member 9 and the upper limit member 12, the up and down movement of the slider 11 is limited, thereby realizing the limitation of the rotation angle of the steering connecting shaft 2.

[0029] Preferably, a guide member 10 having the same length direction as the steering connecting shaft 2 is provided between the upper limit member 12 and the lower limit member 9, and the slider 11 is slidably connected to the guide member 10. The setting of the guide member 10 can guide the sliding of the slider 11 and prevent the slider 11 from rotating.

[0030] Specifically, in one embodiment of the present invention, the upper limit member 12 and the lower limit member 9 are limit plates sleeved on the steering connecting shaft 2, and both the upper limit member 12 and the lower limit member 9 are clearance-fitted with the steering connecting shaft 2. The guide members 10 are provided on both sides of the steering connecting shaft 2, and the slider 11 is slidably connected to the guide members 10 on both sides of the steering connecting shaft 2. The upper limit member 12 and the lower limit member 9 are limit plates sleeved on the steering connecting shaft 2, which facilitates the provision of the guide members 10 on both sides of the steering connecting shaft 2. The provision of the guide members 10 on both sides of the steering connecting shaft 2 can make the up and down movement of the slider 11 more stable.

[0031] In another embodiment of the present invention, the upper limit member 12 and the lower limit member 9 may also be limit blocks fixedly arranged on the steering mechanism.

[0032] In an embodiment of the present invention, since the number of turns of the steering gear for turning left or right is different in different vehicle applications, in order to be suitable for different vehicle applications, the upper limit member 12 and the lower limit member 9 can be connected to the steering gear frame 8 in a detachable connection manner.

[0033] In one embodiment of the present invention, the guide member 10 is a guide rod, the two ends of the guide rod are respectively fixedly connected to the upper limit member 12 and the lower limit member 9, the slider 11 is slidably mounted on the guide rod, the guide member 10 adopts a guide rod, the slider 11 is slidably mounted on the guide rod, and the guide rod limits the rotation of the slider 11.

[0034] In another embodiment of the present invention, the guide member 10 is a guide rail fixedly mounted on the steering gear frame 8 , and the slider 11 is slidably mounted on the guide rail. The guide rail is slidably connected to the slider 11 to limit the rotation of the slider 11 .

[0035] Preferably, a steering center magnet 4 is provided on the side wall of the slider 11, and a steering center sensor 5 for sensing the position of the steering center magnet 4 is provided on the steering mechanism. The setting of the steering center sensor 5 and the steering center magnet 4 can realize precise control of the steering center position and information collection during steering control.

[0036] The specific implementation method of the present invention is as follows: the steering connecting shaft 2 is fixedly connected to the steering encoder 7 through the coupling 6. When the steering gear is working, the connecting shaft screw segment 3 drives the slider 11 to move up and down. When the slider 11 moves upward, the steering positioning of the steering side is realized, and when the slider 11 moves upward, the steering positioning of the steering side is realized. In different vehicle applications, the number of turns of the steering gear to turn left or right is different. The number of turns to turn left or right can be adjusted by the corresponding positions of the upper limit member 12 and the lower limit member 9; the lower limit member 9 and the upper limit member 12 are fixed on the steering gear frame 8, and the fixed position can be adjusted up and down along the axial direction of the steering connecting shaft 2. The position information of the steering center position magnet 4 is sensed by the steering center position sensor 5 to correct the center position direction during the operation of the steering gear. The slider 11 is circumferentially fixed by the guide member 10.

[0037] The present invention is based on the practical application of the steering gear and adds a steering encoder 7. The encoder provides the obtained angle value information to the vehicle controller for use. The control range of the vehicle steering is the neutral position, the left turn limit position, and the right turn limit position. The neutral position information of the steering wheel 1 is collected by the steering neutral position sensor 5, and the steering limit position of the steering gear is controlled by the angle limiting mechanism.

[0038] The feedback force of the steering wheel 1 of the present invention can be randomly adjusted according to actual needs, which improves the driving experience and reduces user fatigue; by collecting the median information of the steering wheel 1, the steering encoder 7 can provide more accurate steering angle value information, so the steering wheel 1 has better directionality and more accurate turning angles; the number of steering circles can be adjusted according to actual needs, and the control scheme design is more flexible.

[0039] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, “a plurality of” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steering gear electromagnetic damping steering adjustment mechanism, characterized in that: The invention comprises a steering gear frame (8), a steering wheel (1), a steering connecting shaft (2), a steering encoder (7) and an electromagnetic damper (13), wherein the electromagnetic damper (13) is sleeved on the steering connecting shaft (2), the electromagnetic damper (13) and the steering encoder (7) are both fixedly mounted on the steering gear frame (8), the electromagnetic damper (13) and the steering encoder (7) are spaced apart, one end of the steering connecting shaft (2) is connected to the steering encoder (7) via a coupling (6), the other end of the steering connecting shaft (2) is fixedly connected to the steering wheel (1), and an angle limiting mechanism for limiting the axial rotation angle of the steering connecting shaft (2) is provided on the steering gear frame (8); The angle limiting mechanism comprises a lower limit member (9) and an upper limit member (12) arranged at intervals along the length direction of the steering connecting shaft (2); a portion of the steering connecting shaft (2) arranged between the upper limit member (12) and the lower limit member (9) is a connecting shaft screw segment (3) provided with an external thread; a slider (11) is threadedly connected to the connecting shaft screw segment (3); the slider (11) moves up and down on the connecting shaft screw segment (3) during the rotation of the steering connecting shaft (2); the upper limit member (12) and the lower limit member (9) are fixedly arranged on the steering gear frame (8) for limiting the up and down movement of the slider (11); a guide member (10) is provided between the upper limit member (12) and the lower limit member (9) with a length direction identical to that of the steering connecting shaft (2); the slider (11) is slidably connected to the guide member (10).

2. The electromagnetic damping steering adjustment mechanism of a steering gear according to claim 1, characterized in that: The upper limit member (12) and the lower limit member (9) are limit plates sleeved on the steering connecting shaft (2); the upper limit member (12) and the lower limit member (9) are both clearance-matched with the steering connecting shaft (2); the guide members (10) are provided on both sides of the steering connecting shaft (2); and the slider (11) is slidably connected to the guide members (10) on both sides of the steering connecting shaft (2).

3. The electromagnetic damping steering adjustment mechanism of a steering gear according to claim 1, characterized in that: The guide member (10) is a guide rod, and both ends of the guide rod are fixedly connected to the upper limit member (12) and the lower limit member (9) respectively, and the slider (11) is slidably sleeved on the guide rod.

4. The electromagnetic damping steering adjustment mechanism of a steering gear according to claim 1, characterized in that: The guide member (10) is a guide rail fixedly arranged on the steering gear frame (8), and the slider (11) is slidably arranged on the guide rail.

5. The electromagnetic damping steering adjustment mechanism of a steering gear according to any one of claims 1 to 4, characterized in that: A steering mid-position magnet (4) is provided on the side wall of the slider (11), and a steering mid-position sensor (5) for sensing the position of the steering mid-position magnet (4) is provided on the steering mechanism.

6. The electromagnetic damping steering adjustment mechanism of a steering gear according to any one of claims 1 to 4, characterized in that: The steering gear frame (8) is a long strip structure, the length direction of the steering connecting shaft (2) is the same as the length direction of the steering gear frame (8), the steering encoder (7) and the electromagnetic damper (13) are respectively arranged at two ends of one side of the steering gear frame (8), and the angle limiting mechanism is arranged between the steering encoder (7) and the electromagnetic damper (13).

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