Automobile electronic steering gear based on electromagnetic driving

Abstract

The utility model relates to the technical field of automobile electronic steering gears, in particular to an automobile electronic steering gear based on electromagnetic drive, which comprises a steering gear shell and a steering component, the steering component is rotatably connected to the inner side of the steering gear shell, a resistance component is mounted on the outer side of the steering component, and a gear component is fixedly connected to the bottom end of the steering component. The outer side of the lower end of the steering assembly is meshed with the outer side of the hollow gear, a steering column is fixedly connected to the inner side of the hollow gear, the steering assembly comprises an auxiliary rotating rod, a torsion sensor is fixedly connected to the outer side of the auxiliary rotating rod, a lower through groove is formed in the inner side of the lower end of the torsion sensor, and a hydraulic rod is fixedly connected to the upper end of the lower through groove formed in the auxiliary rotating rod; according to the steering device, it is guaranteed that when a driver operates steering, the situation that the steering angle is too large due to sudden change of resistance is avoided, and therefore possible dangers are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electronic steering gears, in particular to an automobile electronic steering gear based on electromagnetic drive. Background Art

[0002] The electromagnetically driven automotive electronic steering gear is an advanced automotive steering system that uses electromagnetic technology to replace traditional hydraulic power assistance or mechanical connection methods. This steering gear controls the electric motor through electronic signals, which in turn drives the steering mechanism to achieve precise steering of the wheels. The electronic signal comes from the driver's steering intention.

[0003] When the electromagnetic drive fails, it means that the electronic power steering function is lost. The driver will feel obvious resistance when steering, and the steering wheel becomes abnormally heavy, especially when driving at low speed or parking. This will cause the driver to make wrong judgments when driving the vehicle and affect driving safety. Therefore, to address the above problems, an automotive electronic steering gear based on electromagnetic drive is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an automobile electronic steering device based on electromagnetic drive to solve the problem that when the electromagnetic drive fails, it means the electronic power assist function is lost, the driver will feel obvious resistance when steering, and the steering wheel will become abnormally heavy, which is more obvious when driving at low speed or parking. This will cause the driver to make wrong judgments when driving the vehicle and affect driving safety.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An automobile electronic steering gear based on electromagnetic drive includes a steering gear housing and a steering assembly. The steering gear housing is rotatably connected to the steering assembly, and a resistance assembly is installed on the outside of the steering assembly. The bottom end of the steering assembly is fixedly connected to a gear assembly, and the outer side of the lower end of the steering assembly is meshed with the outer side of a hollow gear. The inner side of the hollow gear is fixedly connected to a steering column. The steering assembly includes an auxiliary rotating rod, and a torque sensor is fixedly connected to the outer side of the auxiliary rotating rod. A lower through groove is provided on the inner side of the lower end of the torque sensor. The upper end of the lower through groove provided on the auxiliary rotating rod is fixedly connected to a hydraulic rod. The hydraulic rod The bottom end of the rod is fixedly connected to a limiting column plate, the bottom end of the limiting column plate is fixedly connected to a first gear block, the outer side of the auxiliary rotating rod is fixedly connected to a built-in ear seat, the inner side of the built-in ear seat is provided with an oil control hole, and an electromagnetic valve is installed inside the oil control hole opened by the built-in ear seat, the resistance assembly includes an oil storage shell, the inner side of the oil storage shell is provided with a placement hole, the inner side of the placement hole opened by the oil storage shell is fixedly connected with a sealing ring, and the inner side of the oil storage shell is provided with an oil storage groove, the gear assembly includes a solid gear, the upper end of the solid gear is fixedly connected to a double bearing, and the top end of the solid gear is fixedly connected to a second gear block.

[0007] As a further optimization of the present invention, the inner side of the steering gear housing is hollow, the steering column is rotatably connected to the steering gear housing, the hollow gear is installed inside the upper end of the steering gear housing, the outer side of the steering column is fixedly connected to a turbine, the inner side of the steering gear housing is fixedly connected to an electric telescopic rod, one side of the electric telescopic rod is fixedly connected to a servo motor through a bracket, and the end of the servo motor main shaft is fixedly connected to a worm.

[0008] As a further optimization of the present invention, the gear assembly is rotatably connected to the inner side of the steering gear housing, the auxiliary rotating rod is in the shape of a cylinder, the outer side of the auxiliary rotating rod is rotatably connected to the inner side of the upper end of the steering gear housing through a bearing, and the steering gear housing is fixed to the car through a bracket.

[0009] As a further optimization of the present invention, the lower through groove is formed in a cylindrical shape, the lower through groove passes through the lower end of the auxiliary rotating rod, the limiting column plate is formed in a cylindrical shape, and the limiting column plate slides on the inner side of the lower through groove formed on the auxiliary rotating rod.

[0010] As a further optimization of the present invention, the shape of the built-in ear seat is a rectangle, one end of the built-in ear seat is an arc-shaped structure, a one-millimeter gap is set between the outer side of the built-in ear seat and the inner side of the oil storage groove opened in the oil storage shell, the auxiliary rotating rod is rotatably connected to the oil storage shell through a bearing, the oil control hole passes through the inner side of the built-in ear seat, the opening shape of the oil control hole is a cylinder, and the number of the built-in ear seats corresponds to the number of the oil control holes.

[0011] As a further optimization of the present invention, the oil storage shell is fixed to the car through a bracket, the shape of the oil storage shell is a slotted cylindrical lift, the placement hole passes through the upper and lower ends of the oil storage shell, the placement hole is connected to the oil storage groove, the inner side of the sealing ring is fitted with the outer side of the auxiliary rotating rod, and hydraulic oil is set inside the oil storage groove.

[0012] As a further optimization of this utility model, the inner side of the double-connected bearing is fixedly connected to the outer side of the lower end of the auxiliary rotating rod, the solid gear is rotatably connected to the auxiliary rotating rod through the double-connected bearing, and the solid gear is rotatably connected to the inner side of the upper end of the steering gear housing.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In the utility model, by providing a steering assembly, a resistance assembly and a gear assembly, the device ensures that the driver will not cause the steering angle to be too large due to a sudden change in resistance when operating the steering, thereby avoiding possible dangers. By maintaining the consistency of the steering resistance, the control stability and safety of the car in the event of partial failure of the steering system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the steering assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the resistance component structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the gear assembly structure of the utility model.

[0019] In the figure: 1. Steering gear housing;

[0020] 2. Steering assembly; 21. Auxiliary turning rod; 22. Torque sensor; 23. Lower through slot; 24. Hydraulic rod; 25. Limit column plate; 26. First gear block; 27. Built-in ear seat; 28. Oil control hole; 29. Solenoid valve;

[0021] 3. Resistance assembly; 31. Oil reservoir; 32. Installation hole; 33. Sealing ring; 34. Oil reservoir groove;

[0022] 4. Hollow gear; 5. Steering column;

[0023] 6. Gear assembly; 61. Solid gear; 62. Double bearing; 63. Second gear block;

[0024] 7. Servo motor; 8. Turbine; 9. Worm; 10. Electric telescopic rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] See also Figure 1-4 , the utility model provides a technical solution:

[0028] The electromagnetically driven automotive electronic steering gear comprises a steering gear housing 1 and a steering assembly 2. The steering gear housing 1 is rotatably connected to the steering assembly 2, and a resistance assembly 3 is installed on the outside of the steering assembly 2. The bottom end of the steering assembly 2 is fixedly connected to a gear assembly 6. The outer side of the lower end of the steering assembly 2 is meshed with the outer side of a hollow gear 4, and the inner side of the hollow gear 4 is fixedly connected to a steering column 5. The steering assembly 2 comprises an auxiliary rotating rod 21. The outer side of the auxiliary rotating rod 21 is fixedly connected to a torque sensor 22. A lower through groove 23 is provided on the inner side of the lower end of the torque sensor 22. The upper end of the lower through groove 23 provided on the auxiliary rotating rod 21 is fixedly connected to a hydraulic rod 24. The bottom end of the hydraulic rod 24 is fixedly connected to the A limiting column plate 25 is provided, and a first gear block 26 is fixedly connected to the bottom end of the limiting column plate 25. A built-in ear seat 27 is fixedly connected to the outside of the auxiliary rotating rod 21. An oil control hole 28 is provided on the inside of the built-in ear seat 27. A solenoid valve 29 is installed on the inside of the oil control hole 28 provided in the built-in ear seat 27. The resistance component 3 includes an oil storage shell 31. A placement hole 32 is provided on the inside of the oil storage shell 31. A sealing ring 33 is fixedly connected to the inside of the placement hole 32 provided in the oil storage shell 31. An oil storage groove 34 is provided on the inside of the oil storage shell 31. The gear assembly 6 includes a solid gear 61. A double bearing 62 is fixedly connected to the upper end of the solid gear 61. A second gear block 63 is fixedly connected to the top of the solid gear 61.

[0029] As a further implementation of this solution, the inside of the steering gear housing 1 is hollow, the steering column 5 is rotatably connected to the steering gear housing 1, the hollow gear 4 is installed inside the upper end of the steering gear housing 1, the outside of the steering column 5 is fixedly connected to the turbine 8, the inside of the steering gear housing 1 is fixedly connected to the electric telescopic rod 10, one side of the electric telescopic rod 10 is fixedly connected to the servo motor 7 through a bracket, and the end of the main shaft of the servo motor 7 is fixedly connected to the worm 9, which makes it convenient to keep the worm 9 away from the turbine 8, thereby facilitating manual control;

[0030] As a further implementation of this solution, the gear assembly 6 is rotatably connected to the inner side of the steering gear housing 1, the auxiliary rotating rod 21 is in the shape of a cylinder, the outer side of the auxiliary rotating rod 21 is rotatably connected to the inner side of the upper end of the steering gear housing 1 through a bearing, and the steering gear housing 1 and the vehicle are fixed by a bracket, which plays a role in limiting the rotation of the auxiliary rotating rod 21;

[0031] As a further implementation of this solution, the lower through-slot 23 is cylindrical in shape and passes through the lower end of the auxiliary rotating rod 21. The limiting column plate 25 is cylindrical in shape and slides inside the lower through-slot 23 of the auxiliary rotating rod 21. The limiting column plate 25 and the first gear block 26 can be controlled to move downward simultaneously. After the first gear block 26 is engaged with the second gear block 63, the rotation of the solid gear 61 can be manually controlled.

[0032] As a further implementation of this solution, the built-in ear seat 27 is in the shape of a rectangular body, one end of the built-in ear seat 27 is an arc-shaped structure, and a one-millimeter gap is set between the outer side of the built-in ear seat 27 and the inner side of the oil storage groove 34 opened in the oil storage shell 31. The auxiliary rotating rod 21 is rotatably connected to the oil storage shell 31 through a bearing, and the oil control hole 28 passes through the inner side of the built-in ear seat 27. The shape of the oil control hole 28 is cylindrical, and the number of the built-in ear seats 27 corresponds to the number of the oil control holes 28. The oil storage shell 31 is fixed to the car through a bracket. The shape of the oil storage shell 31 is a slotted cylindrical lift. The placement hole 32 passes through the upper and lower ends of the oil storage shell 31. The placement hole 32 is connected to the oil storage groove 34. The inner side of the sealing ring 33 is in contact with the outer side of the auxiliary rotating rod 21. Hydraulic oil is set inside the oil storage groove 34, which can control the resistance encountered by the auxiliary rotating rod 21 when rotating, thereby maintaining the consistency of the steering resistance, and improving the control stability and safety of the car in the event of partial failure of the steering system;

[0033] As a further implementation of this solution, the inner side of the double-connected bearing 62 is fixedly connected to the outer side of the lower end of the auxiliary rotating rod 21, and the solid gear 61 is rotatably connected to the auxiliary rotating rod 21 through the double-connected bearing 62. The solid gear 61 is rotatably connected to the inner side of the upper end of the steering gear housing 1, which plays a role in limiting the rotation of the solid gear 61, and at the same time facilitates the rotation of the hollow gear 4.

[0034] Working process: When the servo motor 7 loses its working performance, it prevents the driver from causing danger by steering at an excessively large angle due to different steering resistance. When the servo motor 7 is working normally, the two solenoid valves 29 are closed, and the existing automobile CPU, servo motor 7 and torque sensor 22 are electrically connected. When the auxiliary rotating rod 21 is rotated by human operation, the torque of the auxiliary rotating rod 21 is identified by the torque sensor 22, and the servo motor 7 is started by the automobile CPU. The rotation of the servo motor 7 drives the worm 9 to rotate. The worm 9 is connected to the inner side of the steering gear housing 1 through the bearing. When the worm 9 rotates, it drives the outer meshing worm 9. The wheel 8 rotates, the turbine 8 rotates and drives the inner fixed steering column 5 to rotate, the steering column 5 rotates and drives the hollow gear 4 to rotate, the hollow gear 4 drives the solid gear 61 to rotate, at this time the first gear block 26 and the second gear block 63 are away from each other, thereby realizing the steering of the car, at this time when the auxiliary rotating rod 21 rotates, it drives the two built-in ear seats 27 to rotate, and a gap is set between the built-in ear seats 27 and the oil storage groove 34 opened in the oil storage shell 31. At this time, when the built-in ear seat 27 rotates, under the resistance of the hydraulic oil, the built-in ear seat 27 has a certain resistance when rotating, and the oil storage groove 34 plays a role in supporting the oil storage shell 31. The sealing function is performed between the auxiliary rotating rod 21 to prevent the hydraulic oil inside the oil storage groove 34 from overflowing. When the servo motor 7 fails, the servo motor 7 is identified by the CPU of the car through the existing one, and the electric telescopic rod 10 is started to drive the servo motor 7 and the worm 9 to move, so that the worm 9 is away from the turbine 8. The hydraulic rod 24 is started by the CPU of the car, and the solenoid valve 29 is controlled to open at the same time. The movement of the hydraulic rod 24 drives the limit column plate 25 fixed at the bottom end to move. The limit column plate 25 is slidably connected to the lower through groove 23 opened in the auxiliary rotating rod 21 through the limit slide bar. The limit column plate 25 drives the first The tooth block 26 moves downward, and at this time the first tooth block 26 is engaged with the second tooth block 63, and when the auxiliary rotating rod 21 rotates, the solid gear 61 is driven to rotate. At this time, the two solenoid valves 29 are opened respectively. At this time, the built-in ear seat 27 is subjected to less resistance from the hydraulic oil, and the rotation of the solid gear 61 drives the hollow gear 4 to rotate. At this time, the diameter of the solid gear 61 is smaller than the diameter of the hollow gear 4, which can reduce the resistance when the auxiliary rotating rod 21 rotates. At this time, the rotation resistance of the auxiliary rotating rod 21 is the same as the resistance of the above-mentioned built-in ear seat 27, so that the driver will not be in danger of a large rotation amplitude due to the difference in resistance during operation.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automotive electronic steering gear based on electromagnetic drive, comprising a steering gear housing (1) and a steering assembly (2), characterized in that: The steering gear housing (1) is rotatably connected to a steering assembly (2), the steering assembly (2) is provided with a resistance assembly (3) on the outside, the steering assembly (2) is fixedly connected to a gear assembly (6) at the bottom end, the outer side of the lower end of the steering assembly (2) is meshed with the outer side of a hollow gear (4), and the inner side of the hollow gear (4) is fixedly connected to a steering column (5); The steering assembly (2) includes an auxiliary rotating rod (21), the outer side of the auxiliary rotating rod (21) is fixedly connected to a torque sensor (22), the inner side of the lower end of the torque sensor (22) is provided with a lower through slot (23), the upper end of the lower through slot (23) provided in the auxiliary rotating rod (21) is fixedly connected to a hydraulic rod (24), the bottom end of the hydraulic rod (24) is fixedly connected to a limiting column plate (25), the bottom end of the limiting column plate (25) is fixedly connected to a first gear block (26), the outer side of the auxiliary rotating rod (21) is fixedly connected to a built-in ear seat (27), the inner side of the built-in ear seat (27) is provided with an oil control hole (24), and the lower end of the hydraulic rod (24) is fixedly connected to a limiting column plate (25). 8), a solenoid valve (29) is installed inside the oil control hole (28) opened in the built-in ear seat (27), the resistance component (3) includes an oil storage shell (31), a placement hole (32) is opened inside the oil storage shell (31), a sealing ring (33) is fixedly connected inside the placement hole (32) opened in the oil storage shell (31), an oil storage groove (34) is opened inside the oil storage shell (31), and the gear assembly (6) includes a solid gear (61), a double bearing (62) is fixedly connected to the upper end of the solid gear (61), and a second gear block (63) is fixedly connected to the top end of the solid gear (61).

2. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The inner side of the steering gear housing (1) is hollow, the steering column (5) is rotatably connected to the steering gear housing (1), the hollow gear (4) is mounted inside the upper end of the steering gear housing (1), the outer side of the steering column (5) is fixedly connected to a turbine (8), the inner side of the steering gear housing (1) is fixedly connected to an electric telescopic rod (10), one side of the electric telescopic rod (10) is fixedly connected to a servo motor (7) via a bracket, and the end of the main shaft of the servo motor (7) is fixedly connected to a worm (9).

3. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The gear assembly (6) is rotatably connected to the inner side of the steering gear housing (1); the auxiliary rotating rod (21) is cylindrical in shape; the outer side of the auxiliary rotating rod (21) is rotatably connected to the inner side of the upper end of the steering gear housing (1) via a bearing; and the steering gear housing (1) is fixed to the vehicle via a bracket.

4. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The lower through slot (23) is formed in a cylindrical shape and passes through the lower end of the auxiliary rotating rod (21). The limiting column plate (25) is formed in a cylindrical shape and slides inside the lower through slot (23) formed in the auxiliary rotating rod (21).

5. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The built-in ear seat (27) is in the shape of a rectangular body, one end of the built-in ear seat (27) is an arc-shaped structure, and a distance of one millimeter is set between the outer side of the built-in ear seat (27) and the inner side of the oil storage groove (34) opened in the oil storage shell (31). The auxiliary rotating rod (21) is rotatably connected to the oil storage shell (31) through a bearing. The oil control hole (28) passes through the inner side of the built-in ear seat (27). The opening shape of the oil control hole (28) is cylindrical. The number of the built-in ear seats (27) corresponds to the number of the oil control holes (28).

6. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The oil storage shell (31) is fixed to the vehicle via a bracket. The oil storage shell (31) is in the shape of a slotted column. The placement hole (32) passes through the upper and lower ends of the oil storage shell (31). The placement hole (32) is communicated with the oil storage groove (34). The inner side of the sealing ring (33) is in contact with the outer side of the auxiliary rotating rod (21). Hydraulic oil is set inside the oil storage groove (34).

7. The electromagnetically driven automotive electronic steering gear according to claim 1, characterized in that: The inner side of the double-connected bearing (62) is fixedly connected to the outer side of the lower end of the auxiliary rotating rod (21), and the solid gear (61) is rotationally connected to the auxiliary rotating rod (21) through the double-connected bearing (62). The solid gear (61) is rotationally connected to the inner side of the upper end of the steering gear housing (1).

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