A circular electromagnetic energy-feeding hydraulic actuator device for automobile

Abstract

The present invention provides a circular electromagnetic energy-feeding hydraulic actuator device for automobiles, which includes a shock absorber, a transmission mechanism and an energy-feeding motor, wherein the energy-feeding motor is fixed on a frame of a vehicle body, the upper end of the shock absorber is fixed on the frame of the vehicle body, the lower end of the shock absorber is fixed in a suspension rocker arm in the vehicle body, and power is transmitted between the shock absorber and the energy-feeding motor via the transmission mechanism. The present invention reduces the volume and mass problems of traditional linear energy-feeding suspension without destroying the original structure and performance of the vehicle. It has wide applicability and strong practicality, and can be used in automobiles, electric cars, commercial vehicles, multi-purpose vehicles, heavy-duty trucks and other vehicles, and has broad market prospects.

Description

Technical Field

[0001] The invention relates to a damping device, in particular to an automobile circumferential electromagnetic energy-feeding hydraulic actuator device. Background Art

[0002] With the maturity of vehicle suspension technology, in order to ensure comfort without reducing the handling stability of the car, more and more cars are using active energy-feeding suspension at this stage, so as to improve the working range of the suspension damper. Most energy-feeding suspensions use linear motor actuators, which change the arrangement of magnetic powder in the oil through the magnetic field generated by telescopic expansion to achieve different damping effects. However, this type of actuator needs to arrange the coil and magnetic core directly in the cavity, which has a large volume and mass, and occupies a large space on the body, which is not conducive to the spatial arrangement of the shock absorber. At the same time, the relatively increased unsprung mass is not conducive to improving the performance of the suspension. In addition, ordinary shock absorbers are simple linear reciprocating motions, with a small available stroke of damping and a narrow adjustment range. Therefore, ordinary linear motor actuators often use strong magnets to meet the output current of the driving magnetic powder under short strokes, resulting in a strong sense of damping fluctuations and reduced comfort. Therefore, it is necessary to solve the above technical problems in the existing technology. Summary of the invention

[0003] The purpose of the present invention is to provide a circular electromagnetic energy-feeding hydraulic actuator device for automobiles, which does not need to carry a linear motor actuator with a large volume and mass, thereby reducing the space occupied on the vehicle body.

[0004] A circular electromagnetic energy-feeding hydraulic actuator device for an automobile comprises a shock absorber, a transmission mechanism and an energy-feeding motor, wherein the energy-feeding motor is fixed on a frame of a vehicle body, one end of the shock absorber is fixed on the frame of the vehicle body, and the other end of the shock absorber is fixed in a suspension rocker arm inside the vehicle body, and power is transmitted between the shock absorber and the energy-feeding motor via the transmission mechanism.

[0005] The transmission mechanism includes a first pulley and a second pulley, the first pulley is fixed on the output shaft of the energy feeding motor, the second pulley is rotationally connected to the frame of the vehicle body, and the first pulley and the second pulley are rotationally connected via a belt drive.

[0006] A further improved solution of the present invention is that a rack is provided on the housing of the shock absorber, a gear is fixed on the rotating shaft of the second pulley, and the gear and the rack are meshed with each other.

[0007] A further improvement of the present invention is that the shock absorber includes a push tube and a push rod, the push tube is coaxially arranged with the push rod, and the push rod is slidably connected to the push tube; a spring is placed in the inner cavity of the push tube, one end of the spring is fixed on the end surface of the push tube, and the other end of the spring is against the bottom end of the push rod, and a sliding rod is also provided in the spring, one end of the sliding rod is fixed on the inner cavity end surface of the push tube, and the other end of the sliding rod is slidably connected to the push rod.

[0008] A further improvement of the present invention is that the energy feeding motor is an automobile electromagnetic energy feeding motor.

[0009] A further improvement of the present invention is that the energy feeding motor includes a shell, a brushless inner rotor and an output shaft, the shell is composed of a first cavity and a second cavity, the brushless inner rotor is coaxially arranged with the output shaft, and the brushless inner rotor is sleeved on the output shaft, both of which are rotatably connected to the shell, and the brushless inner rotor is placed in the first cavity; in the first cavity, a plurality of groups of main excitation coils are wound along the circumference of the brushless inner rotor; in the second cavity, magnetic powder oil is injected, and an oil stirring mechanism is sleeved and fixed on the output shaft located in the second cavity, and when the output shaft rotates, it can drive the oil stirring mechanism to rotate; a plurality of groups of auxiliary excitation coils are wound along the outer circumference of the second cavity, and the main excitation coil and the auxiliary excitation coil are connected by a wire.

[0010] A further improvement of the present invention is that the oil stirring mechanism includes a sleeve and oil stirring blades, both side end faces of the sleeve are respectively attached to the axial inner wall of the second cavity, the oil stirring blades are welded on the sleeve at equal distances, and an oil stirring blade groove is formed between two adjacent oil stirring blades.

[0011] A further improvement of the present invention is that a plurality of oil flow holes are provided on the oil stirring blade.

[0012] A further improvement of the present invention is that a plurality of toothed blades cooperating with the oil stirring mechanism are equidistantly distributed in a circumferential manner in the inner cavity of the second cavity, and a toothed blade groove is formed between two adjacent toothed blades.

[0013] Compared with the prior art, the present invention has the following obvious advantages:

[0014] 1. The present invention provides a circular electromagnetic energy-feeding hydraulic actuator device for automobiles. Power is transmitted between a shock absorber and an energy-feeding motor through a transmission mechanism. The shock absorber and the energy-feeding motor are connected in series. The linear motion of the shock absorber is converted into the circular motion of the energy-feeding motor through a gear rack. By adjusting the transmission ratio between the gear rack, the torque of the energy-feeding motor is changed, and the effective stroke can be adjusted. The non-damped repetitive piston motion characteristics of the circular motion enable a wider adjustment range.

[0015] 2. The present invention provides a circular electromagnetic energy-feeding hydraulic actuator device for automobiles, wherein the shock absorber and the energy-feeding motor are installed on the vehicle body, and the device is light and has good performance. The mass does not belong to the unsprung mass, and thus the shock-absorbing performance of the suspension can be improved. At the same time, since the working form of the energy-feeding motor is a circular type rather than a linear reciprocating piston type, the device has certain advantages in terms of structural volume.

[0016] 3. The present invention provides a circular electromagnetic energy-feeding hydraulic actuator device for automobiles. When the damping cannot reach the expected value, the automobile computer controls the input current to the main coil to actively control the input current to the secondary coil, adjust the concentration of the magnetic powder oil in the second cavity, and achieve the effect of linear damping of different sizes corresponding to different speeds by different resistances of the stirring mechanism to achieve the effect of damping and shock reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a circular electromagnetic energy-feeding hydraulic actuator device for an automobile according to the present invention.

[0018] Figure 2 Schematic diagram of the shock absorber structure in the present invention

[0019] Figure 3 Schematic diagram of the structure of the energy-feeding motor in the present invention

[0020] In the figure, 1-feedback motor, 2-shock absorber, 3-gear, 4-second pulley, 5-first pulley, 6-first cavity, 7-main excitation coil, 8-second cavity, 9-auxiliary excitation coil, 10-brushless inner rotor, 11-output shaft, 12-sleeve, 13-oil flow hole, 14-oil stirring blade, 15-toothed blade, 16-housing, 201-push tube, 202-push rod, 203-spring, 204-slide rod, 205-rack DETAILED DESCRIPTION

[0021] Example 1

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1-3 As shown, the present invention provides a circular electromagnetic energy-feeding hydraulic actuator device for an automobile, comprising a shock absorber 2, a transmission mechanism and an energy-feeding motor 1, wherein the energy-feeding motor 1 is fixed on a frame of a vehicle body, one end of the shock absorber 2 is fixed on the frame of the vehicle body, and the other end of the shock absorber 2 is fixed in a suspension rocker arm inside the vehicle body, and power is transmitted between the shock absorber 2 and the energy-feeding motor 1 through the transmission mechanism.

[0024] The transmission mechanism includes a first pulley 5 and a second pulley 4. The first pulley 5 is fixed on the output shaft of the energy feeding motor 1. The second pulley 4 is rotationally connected to the frame of the vehicle body. The first pulley 5 and the second pulley 4 are rotationally connected through a belt drive.

[0025] A rack 205 is provided on the outer shell of the shock absorber 2 , and a gear 3 is fixed on the rotating shaft of the second pulley 4 , and the gear 3 and the rack 205 are meshed with each other.

[0026] The shock absorber includes a push tube 201 and a push rod 202. The push tube 201 is coaxially arranged with the push rod 202, and the push rod 202 is slidably connected with the push tube 201. The spring 203 is placed in the inner cavity of the push tube 201, one end of the spring 203 is fixed on the end face of the push tube 201, and the other end of the spring 203 is against the bottom end of the push rod 202. A sliding rod 204 is also provided in the spring 203, one end of the sliding rod 204 is fixed on the inner cavity end face of the push tube 201, and the other end of the sliding rod 204 is slidably connected with the push rod 202.

[0027] The energy-feeding motor is an automotive electromagnetic energy-feeding motor, which includes a shell 16, a brushless inner rotor 10 and an output shaft 11. The shell 16 is composed of a first cavity 6 and a second cavity 8. The brushless inner rotor is coaxially arranged with the output shaft, and the brushless inner rotor 10 is sleeved on the output shaft 11, both of which are rotatably connected to the shell 16. The brushless inner rotor 10 is placed in the first cavity 6; in the first cavity 6, a plurality of groups of main excitation coils 7 are wound along the circumference of the brushless inner rotor 10; in the second cavity 8, magnetic powder oil is injected, and an oil stirring mechanism is sleeved and fixed on the output shaft 11 located in the second cavity 8. When the output shaft 11 rotates, it can drive the oil stirring mechanism to rotate; a plurality of groups of auxiliary excitation coils 9 are wound along the outer circumference of the second cavity 8, and the main excitation coil 7 and the auxiliary excitation coil 9 are connected by a wire.

[0028] The oil stirring mechanism includes a sleeve 12 and oil stirring blades 14. The end surfaces of the sleeve 12 on both sides are respectively attached to the axial inner wall of the second cavity 8. The oil stirring blades 14 are welded on the sleeve 12 at equal distances. An oil stirring blade groove is formed between two adjacent oil stirring blades 14. A plurality of oil flow holes 13 are also provided on the oil stirring blades 14.

[0029] The inner cavity of the second cavity 8 is equidistantly and circumferentially provided with a plurality of toothed blades cooperating with the oil stirring blade mechanism, and a toothed blade groove is formed between two adjacent toothed blades 15 .

[0030] During operation, when encountering an uneven ground, one end of the shock absorber 2 is fixed on the frame of the vehicle body, and the other end of the shock absorber 2 is fixed in the suspension rocker arm of the vehicle body. Because the ground is uneven, the push rod 202 of the shock absorber 2 is coaxially arranged with the push tube 201, and the push rod 202 is slidably connected with the push tube 201, so the push tube 201 of the shock absorber 2 can shrink toward the upper end of the push rod 202 along the push rod 202. Because a rack 205 is provided on the outer shell of the push tube 201, and a gear 3 is meshed with the rack 205, the shrinkage movement of the shock absorber 2 can drive the output shaft of the energy feeding motor 1 to rotate. Because the output shaft 11 can drive the brushless inner rotor 10 to start rotating, because the material of the brushless inner rotor 10 is a magnet, an induced potential can appear on a group of main excitation coils 7 wound around the outer circumference of the first cavity 6, and after being rectified by a single-phase full-wave rectifier, it is input into the second cavity. 8, an AC excitation magnetic field is established in a certain group of auxiliary excitation coils 9 on the outer circumference, so that a three-phase electric potential appears in the certain group of auxiliary excitation coils 9, and the electric potential is rectified by a rotating rectifier bridge and input into a certain group of main excitation coils 7 on the outer circumference of the first cavity 6, so as to establish a main power generation magnetic field, so that an electric potential is generated in the main excitation coils 7 on the outer circumference of the first cavity 6, and the electric potential can be stored by an external storage battery, thereby completing the energy recovery; the AC excitation magnetic field appearing in the auxiliary excitation coils 9 can also act on the magnetic powder oil, and the magnetic field generated by the auxiliary excitation coils 9 will affect the magnetic powder arrangement of the oil in the second cavity 8, and when the output shaft 11 rotates, it can drive the oil stirring blades 14 to rotate, and at this time, the output shaft 11 can be braked by the oil stirring blades 14, and the resistance of the oil stirring blades 14 can achieve the effect of linear damping of different sizes corresponding to different speeds, so as to achieve the damping and shock reduction effect.

[0031] When the damping cannot reach the expected value, the vehicle computer controls the main excitation coil 7 to input current through an external power supply, thereby actively controlling the input current of the auxiliary excitation coil 9, adjusting the concentration of the magnetic powder oil in the second cavity 8, and achieving the effect of linear damping of different sizes at different speeds through the different resistances of the oil stirring mechanism, thereby achieving the effect of damping and shock reduction.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circular electromagnetic energy-feeding hydraulic actuator device for automobiles, characterized in that: The device comprises a shock absorber (2), a transmission mechanism and a power feeding motor (1), wherein the power feeding motor (1) is fixed on a frame of a vehicle body, one end of the shock absorber (2) is fixed on the frame of the vehicle body, and the other end of the shock absorber is fixed in a suspension rocker arm in the vehicle body, and power is transmitted between the shock absorber (2) and the power feeding motor (1) via the transmission mechanism; the transmission mechanism comprises a first pulley (5) and a second pulley (4), wherein the first pulley (5) is fixed on an output shaft of the power feeding motor (1), and the second pulley (4) is rotationally connected to the frame of the vehicle body, and the first pulley (5) and the second pulley (4) are rotationally connected via a belt transmission; The energy-feeding motor (1) is an automobile electromagnetic energy-feeding motor; the energy-feeding motor comprises a housing (16), a brushless inner rotor (10) and an output rotating shaft (11); the housing (16) is composed of a first cavity (6) and a second cavity (8); the brushless inner rotor (10) and the output rotating shaft (11) are coaxially arranged, and the brushless inner rotor (10) is sleeved on the output rotating shaft (11), and both are rotatably connected to the housing (16); the brushless inner rotor (10) is placed in the first cavity (6); the second cavity (8) is coaxially arranged with the output rotating shaft (11); A plurality of groups of main excitation coils (7) are wound around the circumference of the brushless inner rotor (10) in a cavity (6); a magnetic powder oil is filled in the second cavity (8); an oil stirring mechanism is fixedly mounted on the output shaft (11) in the second cavity (8); when the output shaft (11) rotates, the oil stirring mechanism can be driven to rotate; a plurality of groups of auxiliary excitation coils (9) are wound around the outer circumference of the second cavity (8), and the main excitation coils (7) and the auxiliary excitation coils (9) are connected via a wire; A rack (205) is provided on the outer shell of the shock absorber (2), a gear (3) is fixed on the rotating shaft of the second pulley (4), and the gear (3) and the rack (205) are meshed with each other; The oil stirring mechanism comprises a sleeve (12) and oil stirring blades (14), the end surfaces of both sides of the sleeve (12) are respectively fitted on the axial inner wall of the second cavity (8), the oil stirring blades (14) are welded to the sleeve (12) at equal distances, and an oil stirring blade groove is formed between two adjacent oil stirring blades (14).

2. The automobile circular electromagnetic energy-feeding hydraulic actuator device according to claim 1, characterized in that: The shock absorber (2) comprises a push tube (201) and a push rod (202), wherein the push tube (201) is coaxially arranged with the push rod (202), and the push rod (202) is slidably connected to the push tube (201); a spring (203) is placed in the inner cavity of the push tube (201), one end of the spring (203) is fixed on the end surface of the push tube (201), and the other end of the spring (203) is against the bottom end of the push rod (202); a sliding rod (204) is also provided in the spring (203), one end of the sliding rod (204) is fixed on the inner cavity end surface of the push tube (201), and the other end of the sliding rod (204) is slidably connected to the push rod (202).

3. The automobile circular electromagnetic energy-feeding hydraulic actuator device according to claim 1, characterized in that: The inner cavity of the second cavity (8) is provided with a plurality of toothed blades (15) which cooperate with the oil stirring mechanism and are equidistantly distributed circumferentially therein, and a toothed blade groove is formed between two adjacent toothed blades (15).

4. The automobile circular electromagnetic energy-feeding hydraulic actuator device according to claim 1, characterized in that: The oil stirring blade (14) is provided with a plurality of oil circulation holes (13).

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