Electric control steering device of automobile

Abstract

The utility model relates to the field of steering devices, in particular to an automobile electric control steering device which comprises a shell and a cardan shaft rotationally connected with the shell, a steering wheel is connected to the top of the cardan shaft, the bottom of the cardan shaft penetrates through the shell and is connected with a wire roller, and a control wire is connected with the wire roller in a winding mode and used for transmitting rotation angle information of the steering wheel. According to the device, the rotatable torsion spring shell and the detachable and replaceable torsion spring are combined, so that the rotating resistance of the steering wheel can be controlled, and the steering wheel can rotate more stably. Meanwhile, the initial state of the steering wheel is in the middle of the left-right rotation range, and the control accuracy of the steering wheel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steering devices, in particular to an automobile electronically controlled steering device. Background Art

[0002] The series of devices used by the electronic steering device to change or maintain the direction of the car's movement or reverse direction is called the car steering system. The function of the car steering system is to control the direction of the car according to the driver's wishes.

[0003] A Chinese patent with announcement number CN206358209U discloses an automobile electronic steering device, including a steering device body, a power-assisting motor protection box made of corrosion-resistant and heat-resistant material is installed at the bottom of the steering device body, a steering gear protection column made of aluminum alloy material is installed on the side of the power-assisting motor protection box, and the power-assisting motor protection box and the steering gear protection column are tightly welded. In this automobile electronic steering device, a power-assisting motor with good performance is installed at the bottom of the electronic steering device, and the induction column and the steering telescopic column on the side of the power-assisting motor make the steering response of the electronic steering device more sensitive and make the steering of the vehicle body easier. At the same time, a sensitive performance steering transmission shaft is arranged on the side of the electronic steering device, which ensures that the rotation information of the steering wheel on the top of the electronic steering device can be sensitively transmitted to the steering gear, thereby improving the rotation efficiency of the electronic steering device and ensuring the safety of the driver.

[0004] However, the above-mentioned disclosed solution has the following shortcomings: the above-mentioned device can reduce the rotational resistance of the steering wheel through the structure of the power-assisted motor, but in actual use, the steering resistance of different types of vehicle models varies. When the above-mentioned device is assembled and installed in the vehicle, the size of the rotational resistance is fixed, and it is impossible to adjust it for different types of vehicle models, thereby increasing the control difficulty of the driver during actual driving. Utility Model Content

[0005] The purpose of the utility model is to provide an automobile electronically controlled steering device to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: the device can control the magnitude of the steering wheel rotation resistance through a rotatable torsion spring housing and a detachable and replaceable torsion spring combination, while ensuring that the initial state of the steering wheel is in the middle of the rotation range on the left and right sides, thereby ensuring the accuracy of the steering wheel control.

[0007] The utility model proposes an automobile electric steering device, comprising a housing and a universal shaft rotatably connected thereto, the top of the universal shaft being connected to a steering wheel, the bottom of the universal shaft penetrating the housing and being connected to a wire roller, the wire roller being wound and connected to a control wire for transmitting steering wheel rotation angle information;

[0008] A control housing is provided on the side of the housing, a steering assembly is provided under the housing, and a control component is connected inside the control housing for controlling the steering assembly to rotate.

[0009] Preferably, the control component includes a take-up roller connected to the winding of the control line, and a fixed plate A and a fixed plate B are rotatably connected on both sides of the take-up roller. The fixed plate A and the fixed plate B are fixedly connected to the inner wall of the control shell, and a rotating shaft is fixedly connected at the center of the take-up roller, and both ends of the rotating shaft pass through the fixed plate A and the fixed plate B.

[0010] Preferably, a docking piece is connected to the side of one end of the rotating shaft close to the fixed plate A, and an arc-shaped conductive piece is connected to the side of the fixed plate A away from the take-up roller. One end of the arc-shaped conductive piece is connected to a control module via a control cable, the control module is connected to the fixed plate A, the docking piece is slidably connected to the arc-shaped conductive piece, a conductive sleeve is connected to the side of the control module, the conductive sleeve is rotatably connected to the rotating shaft, and the conductive sleeve is electrically connected to the docking piece through the rotating shaft.

[0011] Preferably, the side of the fixed plate B away from the take-up roller is rotatably connected to a torsion spring housing, the inner wall of the torsion spring housing is detachably connected to a torsion spring, the other end of the torsion spring is detachably connected to the side of the end of the rotating shaft away from the fixed plate A, and a limiting groove is provided at the end of the torsion spring housing away from the fixed plate B, and the torsion spring housing is connected to a cover plate via the limiting groove.

[0012] Preferably, there is a gap between the cover plate and the rotating shaft, a gear is connected to one side of the cover plate away from the torsion spring housing, a handle is connected to the other side of the gear, the fixed plate B is connected to a bracket, a number of elastic telescopic columns are connected to the side of the bracket, the telescopic ends of the elastic telescopic columns are connected to a limiting member, a locking groove is provided on the side of the limiting member facing the gear, and the locking groove is in contact with the side of the gear.

[0013] Preferably, the steering assembly includes a fixed bracket, the fixed bracket is provided with a motor bracket, the motor bracket is connected to a motor, the motor output end is fixedly connected to a connecting rod, the fixed bracket is rotatably connected to a transmission rod, the other end of the transmission rod is rotatably connected to a steering rod, the connecting rod is rotatably connected to the steering rod, and the control module is communicatively connected to the motor.

[0014] Preferably, an installation groove is provided on the inner side wall of the torsion spring housing, and a connecting joint is provided at one end of the torsion spring, which is docked with the installation groove on the inner wall of the torsion spring housing. The connection method between the torsion spring and the rotating shaft is the same as the connection method between the torsion spring and the torsion spring housing.

[0015] The above technical solution of the utility model has the following beneficial technical effects:

[0016] The device can control the magnitude of the steering wheel rotation resistance through a combination of a rotatable torsion spring housing and a detachable and replaceable torsion spring, while ensuring that the initial state of the steering wheel is in the middle of the left and right rotation ranges, thereby ensuring the accuracy of the steering wheel control. The device can convert the analog signal of the rotation angle into an electrical signal through a combination of an arc-shaped conductive member and a docking member, thereby controlling the motor in the steering assembly through a control module, thereby improving the accuracy of signal transmission while avoiding the influence of the rotational friction between the tire and the ground on the steering wheel rotation resistance, thereby ensuring that the magnitude of the steering wheel rotation resistance is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of an embodiment of an electric steering device for an automobile according to the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the line roller in the embodiment of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a docking piece in an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the take-up roller in the embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the torsion spring in the embodiment of the utility model;

[0022] Figure numerals: 1. Shell; 2. Universal joint; 3. Steering wheel; 4. Steering assembly; 5. Wire roller; 6. Control wire; 7. Control component; 701. Wire take-up roller; 702. Fixed plate A; 703. Fixed plate B; 704. Rotating shaft; 705. Docking piece; 706. Arc-shaped conductive piece; 707. Control module; 708. Control cable; 709. Torsion spring; 710. Cover plate; 711. Gear; 712. Handle; 713. Bracket; 714. Elastic telescopic column; 715. Limiting piece; 716. Torsion spring shell; 8. Control shell. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] Example: See Figure 1-5 The utility model provides a technical solution: an automobile electric steering device, comprising a housing 1 and a universal shaft 2 rotatably connected thereto, a steering wheel 3 being connected to the top of the universal shaft 2, a wire roller 5 penetrating through the housing 1 and connected thereto, the wire roller 5 being wound with a control wire 6 and connected thereto for transmitting the rotation angle information of the steering wheel 3, and the structure of the universal shaft 2 can ensure a stable rotation control effect when the steering wheel 3 is tilted within a certain angle range;

[0026] A control housing 8 is provided on the side of the housing 1 , a steering assembly 4 is provided below the housing 1 , and a control component 7 is connected inside the control housing 8 for controlling the steering assembly 4 to rotate.

[0027] The control component 7 includes a take-up roller 701 connected to the control line 6, and the two sides of the take-up roller 701 are rotatably connected to a fixed plate A702 and a fixed plate B703, and the fixed plate A702 and the fixed plate B703 are fixedly connected to the inner wall of the control housing 8. A rotating shaft 704 is fixedly connected at the center of the take-up roller 701, and both ends of the rotating shaft 704 pass through the fixed plate A702 and the fixed plate B703, and the rotation stability of the take-up roller 701 can be improved through the two ends of the rotating shaft 704;

[0028] Furthermore, a docking piece 705 is connected to the side of one end of the rotating shaft 704 close to the fixed plate A702, and an arc-shaped conductive piece 706 is connected to the side of the fixed plate A702 away from the take-up roller 701. One end of the arc-shaped conductive piece 706 is connected to a control module 707 through a control cable 708. The control module 707 is connected to the fixed plate A702, and the docking piece 705 is slidably connected to the arc-shaped conductive piece 706. A conductive sleeve is connected to the side of the control module 707, and the conductive sleeve is rotatably connected to the rotating shaft 704. The conductive sleeve is electrically connected to the docking piece 705 through the rotating shaft 704. The loop formed by the combination of the docking piece 705 and the arc-shaped conductive piece 706 can achieve the effect of converting the analog signal of the rotation angle into an electrical signal, so that in the subsequent control signal transmission process, the control module 707 controls the steering component 4 to achieve the effect of precise control of the device.

[0029] Furthermore, a torsion spring housing 716 is rotatably connected to a side of the fixed plate B703 away from the take-up roller 701, and a torsion spring 709 is detachably connected to an inner wall of the torsion spring housing 716. The other end of the torsion spring 709 is detachably connected to a side of an end of the rotating shaft 704 away from the fixed plate A702. A limiting groove is provided at the end of the torsion spring housing 716 away from the fixed plate B703. The torsion spring housing 716 is connected to a cover plate 710 through the limiting groove. A fixed plate C is rotatably connected to a side of the wire roller 5 away from the universal shaft 2. The fixed plate C is connected to the inner wall of the housing 1. A torsion spring assembly is provided at the bottom of the fixed plate C. The structure of the torsion spring assembly is the same as the bottom structure of the fixed plate B703. The torsion spring 709 inside the torsion spring assembly is installed in a certain manner. The torsion spring 709 is installed in the opposite direction to the torsion spring housing 716 inside the control housing 8, and the two torsion springs 709 have the same degree of tension. The two sets of torsion springs 709 installed in opposite directions can ensure that the steering wheel 3 has the same rotation resistance when rotating clockwise or counterclockwise, thereby avoiding problems such as inconsistency between the counterclockwise rotation resistance and the clockwise rotation resistance. The rotating shaft 704 passing through the fixed plate A702 and the fixed plate B703 can drive the docking piece 705 and the torsion spring 709 to rotate when the take-up roller 701 rotates, thereby ensuring that the device can stably transmit the rotation angle information while providing a certain degree of rotation resistance for the steering wheel 3, which is convenient for the staff to control.

[0030] Furthermore, there is a gap between the cover plate 710 and the rotating shaft 704, and a gear 711 is connected to one side of the cover plate 710 away from the torsion spring housing 716, and a handle 712 is connected to the other side of the gear 711, and the fixing plate B703 is connected to a bracket 713, and a plurality of elastic telescopic columns 714 are connected to the side of the bracket 713, and the telescopic end of the elastic telescopic column 714 is connected to a limiting member 715, and the limiting member 715 is provided with a locking groove on the side facing the gear 711, and the locking groove contacts the side of the gear 711. The cover plate 710 can drive the torsion spring housing 716 to rotate and limit, thereby realizing the compatibility of the device with multiple torsion springs 709. Since torsion springs 709 with different rotation resistances usually have different lengths, the starting position and the end position of the torsion spring 709 are different during installation, but the steering wheel 3 needs to be kept in a horizontal position. Therefore, in the process of replacing the torsion spring 709, the connection stability of various torsion springs 709 can be ensured by rotating the torsion spring housing 716.

[0031] The steering assembly 4 includes a fixed bracket, the fixed bracket is provided with a motor bracket, the motor bracket is connected to a motor, the motor output end is fixedly connected to a connecting rod, the fixed bracket is rotatably connected to a transmission rod, the other end of the transmission rod is rotatably connected to a steering rod, the connecting rod is rotatably connected to the steering rod, and the control module 707 is communicatively connected to the motor.

[0032] An installation groove is provided on the inner wall of the torsion spring housing 716, and a connecting joint is provided at one end of the torsion spring 709, which is docked with the installation groove on the inner wall of the torsion spring housing 716. The connection method between the torsion spring 709 and the rotating shaft 704 is the same as the connection method between the torsion spring 709 and the torsion spring housing 716.

[0033] This device can be used to adjust the rotational resistance of the steering wheel 3 according to different types of vehicle models, so that compared with traditional devices, this device has better compatibility with different vehicle models. At the same time, by converting analog signals into electrical signal transmission, the control accuracy of the device can be effectively improved.

[0034] When the device is used, the driver turns the steering wheel 3, thereby driving the universal shaft 2 to rotate, so that the wire roller 5 inside the housing 1 rotates, thereby driving the control wire 6 to be pulled, achieving the effect of the device's rotation signal transmission.

[0035] Since the take-up roller 701 is connected to the rotating shaft 704, the rotating shaft 704 rotates synchronously during the rotation of the take-up roller 701, and the connecting piece 705 is driven to rotate by the rotating shaft 704, so that the length of the conductive loop formed by the connecting piece 705 and the arc-shaped conductive piece 706 can be changed. The combination of the control cable 708 and the control module 707 can ensure that the analog signal of the rotation angle of the rotating shaft 704 is converted into a change in the size of the electrical signal, so that through the control combination of the control module 707 and the steering assembly 4, the electric signal is used to control the motor inside the steering assembly 4, which can improve the steering control accuracy of the device while avoiding the influence of the rotational friction between the tire and the ground on the rotational resistance of the steering wheel 3, ensuring that the steering wheel 3 can maintain the same rotational resistance in any ground environment.

[0036] By combining the torsion spring housing 716 and the torsion spring 709 at the bottom of the fixing plate B703, the device can adjust the rotation resistance of the steering wheel 3 and ensure that the control line 6 always remains in a tensioned state.

[0037] When installing the torsion spring 709, by connecting the two ends of the torsion spring 709 to the rotating shaft 704 and the inner wall of the torsion spring housing 716 respectively, it is possible to ensure that the rotating shaft 704 can rotate elastically. After the torsion spring 709 is installed and connected, the combination of the gear 711 and the handle 712 on the top of the cover 710 can drive the torsion spring housing 716 to rotate, thereby driving the torsion spring 709 to rotate, thereby allowing the torsion spring 709 to store elastic potential energy.

[0038] The steering wheel 3 has different rotation resistances according to different vehicle models, so that the torsion spring housing 716 is rotated to different angles, and the gear 711 and the cover plate 710 are driven to rotate through the handle 712. During the rotation adjustment of the torsion spring housing 716, the steering wheel 3 is always in a horizontal initial state, and the cover plate 710 is combined and connected through the limiting groove structure on the torsion spring housing 716, thereby avoiding relative rotation between the cover plate 710 and the torsion spring housing 716, ensuring the stability of the rotation transmission, and then achieving the effect of driving the torsion spring housing 716 to rotate through the handle 712. During the process of rotating the torsion spring housing 716 through the handle 712, the limiting member 715 is manually separated from the side of the gear 711 to ensure that the gear 711 can rotate. When the torsion spring housing 716 is rotated to different angles, the tensioning degree of the internal torsion spring 709 is different, thereby achieving different degrees of pulling effect on the control line 6.

[0039] After the torsion spring housing 716 is rotated and adjusted to a suitable angle, the current rotation angle of the gear 711 is locked by the limit member 715, thereby preventing the cover plate 710 from rotating unexpectedly, and further fixing the current rotation angle of the torsion spring housing 716. After adjusting the torsion spring housing 716 in the control housing 8, the torsion spring assembly inside the housing 1 is symmetrically adjusted. At this time, the rotation direction of the torsion spring housing 716 in the torsion spring assembly is opposite to the rotation direction of the torsion spring housing 716 in the control housing 8, and the installation direction of the torsion spring 709 in the torsion spring assembly is also opposite to the installation direction of the torsion spring 709 in the control housing 8, thereby ensuring that the control line 6 is always in a tensioned state, and the clockwise rotation resistance of the steering wheel 3 is the same as the counterclockwise rotation resistance.

[0040] After the rotating shaft 704 rotates, the circuit formed by the docking member 705 and the arc-shaped conductive member 706 changes, and the control module 707 performs electrical signal control on the steering assembly 4. After receiving the control electrical signal from the control module 707, the motor in the steering assembly 4 rotates, thereby realizing the vehicle steering drive analog signal effect. By adding an electrical signal transmission method between the input analog signal and the output analog signal, it is possible to avoid the output end rotational resistance from affecting the input end rotational resistance, so that the steering wheel 3 has the same rotational resistance when the vehicle travels to any ground environment.

[0041] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. In line with the concept of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the above aspects of the present invention, which are not provided in detail for the sake of simplicity.

[0042] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An electric steering device for an automobile, comprising a housing (1) and a universal shaft (2) rotatably connected thereto, the top of the universal shaft (2) being connected to a steering wheel (3), characterized in that: The bottom of the universal shaft (2) passes through the housing (1) and is connected to a wire roller (5), and the wire roller (5) is wound and connected to a control wire (6) for transmitting the rotation angle information of the steering wheel (3); A control housing (8) is provided on the side of the housing (1), a steering assembly (4) is provided below the housing (1), and a control component (7) is connected inside the control housing (8) for controlling the steering assembly (4) to rotate.

2. The automotive electronic steering device according to claim 1, characterized in that: The control component (7) comprises a take-up roller (701) connected to and wound around the control line (6); a fixed plate A (702) and a fixed plate B (703) are rotatably connected on both sides of the take-up roller (701); the fixed plate A (702) and the fixed plate B (703) are fixedly connected to the inner wall of the control housing (8); a rotating shaft (704) is fixedly connected at the center of the take-up roller (701); and both ends of the rotating shaft (704) pass through the fixed plate A (702) and the fixed plate B (703).

3. The automotive electronic steering device according to claim 2, characterized in that: A docking piece (705) is connected to the side of one end of the rotating shaft (704) close to the fixed plate A (702); an arc-shaped conductive piece (706) is connected to the side of the fixed plate A (702) away from the take-up roller (701); one end of the arc-shaped conductive piece (706) is connected to a control module (707) via a control cable (708); the control module (707) is connected to the fixed plate A (702); the docking piece (705) is slidably connected to the arc-shaped conductive piece (706); a conductive shaft sleeve is connected to the side of the control module (707); the conductive shaft sleeve is rotatably connected to the rotating shaft (704); and the conductive shaft sleeve is electrically connected to the docking piece (705) via the rotating shaft (704).

4. The automotive electronic steering device according to claim 3, characterized in that: A torsion spring housing (716) is rotatably connected to a side of the fixed plate B (703) away from the take-up roller (701); a torsion spring (709) is detachably connected to an inner side wall of the torsion spring housing (716); the other end of the torsion spring (709) is detachably connected to a side surface of an end of the rotating shaft (704) away from the fixed plate A (702); a limiting groove is provided at one end of the torsion spring housing (716) away from the fixed plate B (703); and the torsion spring housing (716) is connected to a cover plate (710) via the limiting groove.

5. The automotive electronic steering device according to claim 4, characterized in that: A gap is provided between the cover plate (710) and the rotating shaft (704); a gear (711) is connected to one side of the cover plate (710) away from the torsion spring housing (716); a handle (712) is connected to the other side of the gear (711); the fixing plate B (703) is connected to a bracket (713); a plurality of elastic telescopic columns (714) are connected to the side of the bracket (713); a limiting member (715) is connected to the telescopic end of the elastic telescopic column (714); a locking groove is provided on the side of the limiting member (715) facing the gear (711); the locking groove contacts the side of the gear (711).

6. The automotive electronic steering device according to claim 3, characterized in that: The steering assembly (4) comprises a fixed bracket, the fixed bracket is provided with a motor bracket, the motor bracket is connected to a motor, an output end of the motor is fixedly connected to a connecting rod, the fixed bracket is rotatably connected to a transmission rod, the other end of the transmission rod is rotatably connected to a steering rod, the connecting rod is rotatably connected to the steering rod, and the control module (707) is communicatively connected to the motor.

7. The automotive electronic steering device according to claim 5, characterized in that: The inner wall of the torsion spring housing (716) is provided with a mounting groove, and one end of the torsion spring (709) is provided with a connecting joint, which is butted against the mounting groove on the inner wall of the torsion spring housing (716). The connection method between the torsion spring (709) and the rotating shaft (704) is the same as the connection method between the torsion spring (709) and the torsion spring housing (716).

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