CN118959504A - A spiral spring with adjustable stiffness and a stiffness adjustment method - Google Patents
A spiral spring with adjustable stiffness and a stiffness adjustment method Download PDFInfo
- Publication number
- CN118959504A CN118959504A CN202410995952.5A CN202410995952A CN118959504A CN 118959504 A CN118959504 A CN 118959504A CN 202410995952 A CN202410995952 A CN 202410995952A CN 118959504 A CN118959504 A CN 118959504A
- Authority
- CN
- China
- Prior art keywords
- regulation
- control device
- acceleration
- electric control
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract description 23
- 239000000725 suspension Substances 0.000 abstract description 52
- 239000012530 fluid Substances 0.000 abstract description 31
- 239000006096 absorbing agent Substances 0.000 abstract description 27
- 230000035939 shock Effects 0.000 abstract description 27
- 230000009471 action Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 description 78
- 230000033228 biological regulation Effects 0.000 description 72
- 230000001276 controlling effect Effects 0.000 description 34
- 230000001105 regulatory effect Effects 0.000 description 31
- 239000011553 magnetic fluid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0162—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking
- B60G17/0163—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking the control involving steering geometry, e.g. four-wheel steering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0164—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during accelerating or braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
- B60G17/01908—Acceleration or inclination sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/042—Wound springs characterised by the cross-section of the wire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/121—Attachments or mountings adjustable, e.g. to modify spring characteristics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/08—Sensor arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
本发明涉及弹簧技术领域，具体指一种刚度可调的螺旋弹簧及刚度调节方法。其装置包括螺旋弹簧，所述螺旋弹簧的螺旋弹簧丝为空芯结构；导电流体，所述导电流体设于螺旋弹簧的空芯结构内，通电后可直接或在磁场作用下发生粘度变化；第一电极，所述第一电极设于螺旋弹簧的一端；第二电极，所述第二电极设于螺旋弹簧的另一端；电控装置，所述电控装置与第一电极、导电流体和第二电极电性连接形成回路，用于调控所述回路中的电流。所述刚度调节方法采用螺旋弹簧装置，适用于安装在车辆悬架的减振器上，通过调节螺旋弹簧刚度提高不同路况下驾驶车辆的操控及驾乘舒适性。
The present invention relates to the field of spring technology, and specifically refers to a helical spring with adjustable stiffness and a stiffness adjustment method. The device includes a helical spring, the helical spring wire of the helical spring is a hollow structure; a conductive fluid, the conductive fluid is arranged in the hollow structure of the helical spring, and the viscosity can change directly or under the action of a magnetic field after being energized; a first electrode, the first electrode is arranged at one end of the helical spring; a second electrode, the second electrode is arranged at the other end of the helical spring; an electric control device, the electric control device is electrically connected to the first electrode, the conductive fluid and the second electrode to form a loop, and is used to regulate the current in the loop. The stiffness adjustment method uses a helical spring device, which is suitable for being installed on the shock absorber of the vehicle suspension, and improves the control and driving comfort of the vehicle under different road conditions by adjusting the stiffness of the helical spring.
Description
Technical Field
The invention relates to the technical field of springs, in particular to a spiral spring with adjustable rigidity and a rigidity adjusting method.
Background
The traditional car suspension system adopts the coil spring to be used for slowing down vibration, and different spring rates provide different suspension rates, bring different operability and ride comfort's impression, and the elasticity coefficient of conventional spring is rigidity fixed, does not possess suspension rigidity regulatory function, can't provide higher ride comfort under different road conditions.
Patent publication number "CN202251596U" discloses a stiffness-adjustable coil spring, which includes a coil spring and an annular external electromagnet or a columnar internal electromagnet, wherein a wire of the coil spring is composed of a hollow tube in which a liquid or grease is encapsulated, an outer diameter of the coil spring is smaller than an inner diameter of the annular external electromagnet with a gap left, the coil spring is placed in the annular external electromagnet or an inner diameter of the coil spring is larger than an outer diameter of the columnar internal electromagnet with a gap left, and the columnar internal electromagnet is placed in the coil spring. The device changes the viscosity of liquid or grease by controlling the power supply to adjust the magnetic force of the electromagnet, the electromagnet is needed to be used, the spring device is used for damping the automobile, the buffer distance, namely the expansion gap, is needed, the electromagnet cannot expand and contract, and the spring device cannot be adaptively arranged on the shock absorber to provide adjustable rigidity for the suspension.
Disclosure of Invention
The invention aims to solve the defects of the background art and provides a rigidity-adjustable spiral spring which is suitable for being installed on a shock absorber and a rigidity adjusting method.
The technical scheme adopted by the invention is as follows: a coil spring with adjustable rigidity comprises,
The spring wire of the spiral spring is of a hollow structure;
the conductive fluid is arranged in the hollow structure of the spiral spring and can directly or under the action of a magnetic field after being electrified, so that the viscosity of the conductive fluid changes;
the first electrode is arranged at one end of the spiral spring;
The second electrode is arranged at the other end of the spiral spring;
the electric control device is electrically connected with the first electrode, the conductive fluid and the second electrode to form a loop and is used for regulating and controlling current in the loop.
Further, the spiral spring is sleeved on the shock absorber, one end of the spiral spring is fixedly connected to the fixed end of the shock absorber, and the other end of the spiral spring is fixedly connected to the movable end of the shock absorber.
Further, the first electrode comprises an electrode connecting sheet arranged at one end of the spiral spring, and an excitation coil arranged at the end part of the spring wire and two ends of the excitation coil are respectively and electrically connected with the electrode connecting sheet and the electric control device.
Further, an insulating layer is arranged in the hollow structure of the spiral spring and is used for separating the spring wire from the conductive fluid.
Further, the conductive fluid comprises a conductive magnetic fluid and a metal water conjunct.
Further, the system also comprises a sensor assembly, wherein the sensor assembly is used for collecting regulation and control information; the electric control device can regulate and control the current in the loop according to the regulation and control information, so as to adjust the rigidity of the spiral spring.
Further, the regulation information includes at least one of accelerator opening, suspension vibration frequency, steering wheel angle, vehicle acceleration, or vehicle speed.
Further, the regulation and control information comprises vehicle acceleration, and the electric control device automatically regulates and controls the loop current when the vehicle acceleration is greater than or equal to a preset acceleration threshold value; the loop current increases as the vehicle acceleration value increases.
Further, the vehicle acceleration includes a damper acceleration; the damper acceleration includes at least one of a vertical acceleration, a longitudinal acceleration, or a lateral acceleration; the vertical acceleration comprises the vertical telescopic acceleration of the shock absorber or the vertical moving acceleration of the fixed end of the shock absorber.
Further, the regulation and control information comprises suspension vibration frequency, and the electric control device regulates and controls the loop current in a segmented mode according to the frequency of the suspension vibration frequency; the frequency segments each correspond to a respective loop current.
Further, the regulation and control information collected by the sensor assembly comprises steering wheel rotation angle and accelerator opening; the electric control device increases or decreases the loop current when the steering wheel angle is certain and the accelerator opening is certain and the steering wheel angle is increased or the steering wheel angle and the accelerator opening are increased simultaneously.
Further, the regulation information is correspondingly provided with a weighting coefficient, and when the regulation information comprises a plurality of items, the electric control device regulates the loop current according to a comprehensive regulation value, wherein the comprehensive regulation value comprises the sum of products of current values corresponding to each item of regulation information and the corresponding weighting coefficient.
Further, the electric control device adjusts the current calibration of the loop to have a plurality of gears, and the comprehensive regulation and control value corresponds to different gears of the loop current.
Further, the electric control device adjusts the current calibration of the loop to have a plurality of gears, and the gears correspond to the percentage of the maximum current value and comprise 0%, 25%, 50%, 75% and 100%.
In another aspect of the present invention, there is also provided a method for adjusting the stiffness of an adjustable stiffness coil spring, using the adjustable stiffness coil spring provided by the present invention, the method for adjusting the stiffness comprising,
Acquiring regulation and control information for triggering an electric control device to regulate and control the loop current;
judging whether the regulation information meets the regulation condition of regulating the loop current by the electric control device;
when the regulation and control information meets the regulation and control conditions, the electric control device automatically regulates and controls the current in the loop corresponding to the regulation and control information.
Further, the regulation and control information comprises at least one of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration or vehicle speed;
further, judging whether the regulation information meets the regulation condition of the electric control device for regulating the loop current or not includes judging whether the vehicle acceleration is larger than or equal to a preset acceleration threshold value or not, and if so, judging that the regulation information meets the regulation condition.
Further, the judging whether the regulation and control information meets the regulation and control conditions of the electric control device for regulating and controlling the loop current comprises judging whether the frequency segment where the vibration frequency of the suspension is located corresponds to the loop current, and if not, judging that the regulation and control information meets the regulation and control conditions.
Further, the judging whether the regulating and controlling information meets the regulating and controlling condition of the electric control device for regulating and controlling the loop current comprises judging whether the accelerator opening is increased at a certain time of steering wheel rotation angle or whether the steering wheel rotation angle is increased at a certain time of accelerator opening or whether the steering wheel rotation angle and the accelerator opening are increased at the same time, if so, judging that the regulating and controlling information meets the regulating and controlling condition.
Further, the electric control device automatically regulates and controls the current in the loop according to regulation and control information, wherein the regulation and control information comprises the step of automatically regulating and controlling the current of the loop when the acceleration of the vehicle is larger than or equal to a preset acceleration threshold value; the loop current increases as the vehicle acceleration value increases.
Further, the electric control device automatically regulates and controls the current in the loop according to the regulation and control information, and the method comprises the step of regulating and controlling the current of the loop in a segmented manner according to the frequency of the vibration frequency of the suspension; the frequency segments each correspond to a respective loop current.
Further, the electric control device automatically regulates and controls the current in the loop according to the regulation and control information, and the current of the loop is increased or reduced when the steering wheel angle is certain and the accelerator opening is increased or the accelerator opening is certain and the steering wheel angle is increased or the steering wheel angle and the accelerator opening are increased simultaneously.
The beneficial effects of the invention include: 1. the spiral spring device is electrically connected with the spiral conductive fluid through the electric control device to form a loop, so that the conductive fluid is electrified or the annual viscosity of the conductive fluid changes under the action of a magnetic field, the rigidity of the spiral spring is changed, an electromagnet is not needed, the spiral spring device can be adaptively arranged on a shock absorber of an automobile suspension, and the rigidity of the spiral spring can be adjusted to improve the comfort of driving a vehicle under different road conditions;
2. The first electrode can generate a magnetic field through the exciting coil, and when the conductive fluid is conductive magnetic fluid, the regulation and control effect on the viscosity of the conductive fluid can be enhanced;
3. the inner wall of the spiral spring guide wire and the conductive fluid are isolated through the insulating layer, so that potential safety hazards caused by the conduction of the spiral spring can be prevented;
4. The sensor assembly can collect regulation and control information to automatically regulate the current in the circuit, and the viscosity of the conductive fluid is changed so as to regulate and control the rigidity of the spiral spring; at least one of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration or vehicle speed can be used as regulation information to reflect the running action or road condition of the vehicle, so that the spiral spring stiffness is correspondingly regulated to slow down vibration or roll, and the driving comfort is improved;
5. The electric control device of the invention regulates and controls the loop current based on the acceleration of the vehicle, so that the rigidity of the spiral spring can be adapted to the acceleration or deceleration action of the vehicle, and the acceleration head-up, deceleration or brake nodding of the vehicle can be reduced;
6. The acceleration of the shock absorber is used as the acceleration of the vehicle, the whole acceleration of the whole vehicle can be divided into a plurality of local accelerations, so that the rigidity of a vehicle suspension can be conveniently and respectively regulated and controlled, and the rigidity of the spiral spring can be regulated and controlled based on the transverse acceleration of the shock absorber, so that the roll characteristic of the vehicle can be regulated and controlled; the longitudinal acceleration of the shock absorber is used as the basis to regulate the rigidity of the spiral spring so as to reduce the bumping feeling, the stability is enhanced;
7. the electric control device adjusts and controls the loop current according to the vibration frequency of the suspension, so that the rigidity of the spiral spring can be adapted to slow down the corresponding road condition, and the driving stability is improved;
8. The electric control device of the invention regulates and controls the loop current according to the steering wheel angle and the accelerator opening, can regulate the steering characteristic of the vehicle, and the rigidity of the regulated spiral spring can tend to be insufficient in steering, thereby having good steering characteristic and safety; the adjusted coil spring stiffness can tend to oversteer, facilitating drift;
9. By setting the weighting coefficient, the magnitude of the loop current is comprehensively regulated when the regulation information comprises a plurality of pieces of information, so that the rigidity of the spiral spring is more in line with the driving requirement, and the driving performance and the comfort are improved;
10. the conductive magnetic fluid is electrified in the spiral spring to form a coil so as to generate a magnetic field, so that the viscosity of the conductive magnetic fluid is changed under the action of the magnetic field, and the rigidity of the spiral spring is adjusted; the metal water conjuncted body is electrified to directly change the self viscosity, so that the current is convenient to regulate and control the viscosity to realize the regulation of the rigidity of the spiral spring;
11. The rigidity adjusting method of the rigidity-adjustable spiral spring fully uses the characteristics of the rigidity-adjustable spiral spring, and is simple and convenient to adjust; the rigidity of the spiral spring can be adjusted by taking the material characteristic of the spiral spring as the basic rigidity and adjusting the current after being electrified.
The stiffness-adjustable spiral spring and the stiffness adjusting method can be used for adjusting and controlling the stiffness of the suspension when being arranged on a vehicle suspension, and the stiffness of the spiral spring is adjusted by changing the viscosity of the conductive magnetic fluid through adjusting and controlling the magnitude of current, so that the stiffness of the suspension is adjusted, the driving comfort is adjusted and controlled, and the operation and the use are simple, and the stiffness-adjustable spiral spring has great popularization value.
Drawings
Fig. 1: the rigidity-adjustable spiral spring device is structurally schematic;
fig. 2: a spiral spring structure schematic diagram;
fig. 3: the spiral spring is connected with a structural schematic diagram of the shock absorber;
wherein: 1-a coil spring; 11-a sealing end cover; 2-a first electrode; 21-electrode connection piece; 3-a second electrode; 4-an electric control device; 5-a sensor assembly; 6-fixing the tower top; 7-a spring pallet; 8-vibration damper.
Detailed Description
Embodiments of the present invention are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The invention will now be described in further detail with reference to the drawings and to specific examples.
The invention relates to a rigidity-adjustable spiral spring which can be used for being arranged on a shock absorber of a vehicle to provide adjustable rigidity for a suspension, and the rigidity of the spiral spring is adjusted by changing the viscosity of conductive magnetic fluid through regulating and controlling the current forming a circuit with the conductive fluid by an electric control device, so that the rigidity of the suspension is adjusted, the driving comfort is improved, the operation and the use are simple, and the suspension has great popularization value.
The coil spring with adjustable rigidity comprises a coil spring 1, conductive fluid, a first electrode 2, a second electrode 3 and an electric control device 4, wherein a spring wire of the coil spring 1 is of a hollow structure, and the hollow structure forms a coil pipeline in the coil spring 1; the conductive fluid is arranged in the hollow structure of the spiral spring 1, and can directly change viscosity after being electrified or change viscosity under the action of a magnetic field generated by the spiral coil formed by the conductive fluid; the first electrode 2 is arranged at one end of the spiral spring 1; the second electrode 3 is arranged at the other end of the spiral spring 1; the electric control device 4 is electrically connected with the first electrode 2, the conductive fluid and the second electrode 3 to form a series loop for regulating and controlling the current in the loop; when the viscosity of the conductive fluid changes, the elasticity coefficient, namely the rigidity of the spiral spring 1 also changes, the rigidity of the spiral spring 1 can be adjusted by regulating and controlling the current in the loop through the electric control device 4, an inextensible electromagnet is not needed, the spiral spring can be adaptively arranged on a vehicle suspension to adjust the rigidity of the suspension, and the driving comfort is improved.
In one embodiment, as shown in fig. 3, the spiral spring 1 is sleeved on the shock absorber 8, one end of the spiral spring 1 is fixedly connected to the fixed end of the shock absorber 8, and the other end is fixedly connected to the movable end of the shock absorber 8. Specifically, the fixed end of the damper 8 is fixedly provided with a spring supporting plate 7, the movable end of the damper 8 is provided with a fixed tower top 6, the fixed tower top 6 can be of a plate-shaped structure, the coil spring 1 is sleeved on the damper 8, the two ends of the damper 8 are fixedly connected with the spring supporting plate 7 and the fixed tower top 6 respectively, and the electric control device 4 is fixedly arranged on the fixed tower top 6 or the spring supporting plate 7. The spiral spring 1 device and the shock absorber 8 are fixedly connected into a whole, and the assembly process is convenient for being installed on a suspension.
In a further embodiment, the coil spring 1 device of the present invention further comprises a sensor assembly 5, as schematically shown in fig. 1 and 3, the sensor assembly 5 being used for collecting regulatory information; the electric control device 4 can regulate and control the current in the loop according to the regulation and control information; the regulation information includes at least one of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration, or vehicle speed, i.e., any one or more of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration, and vehicle speed may be used as the regulation information. The regulation and control information collected through the sensor assembly 5 can be used as a basis for regulating and controlling the current of the electric control device 4, and the electric control device 4 can automatically regulate the rigidity of the spiral spring 1; at least one of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration or vehicle speed can be used as regulation information to reflect the running action or road condition of the vehicle, so that the rigidity of the spiral spring 1 is correspondingly regulated to slow down vibration, and driving comfort is improved.
On the basis of collecting the regulation information based on the sensor assembly 5, the regulation information collected by the sensor assembly 5 includes vehicle acceleration including vehicle lateral acceleration (vehicle width direction), vehicle longitudinal acceleration (vehicle length direction) and vehicle vertical acceleration (vehicle height direction), and the vehicle acceleration can be collected using an acceleration sensor; the electric control device 4 automatically regulates and increases loop current when the vehicle acceleration is greater than or equal to a preset acceleration threshold value; loop current increases as vehicle acceleration values increase; when the vehicle accelerates, the load is transferred to the rear axle, so that the coil spring 1 of the rear suspension generates corresponding compression deformation, and the smaller the stiffness of the coil spring 1 is, the larger the compression deformation amount is, and the more serious the acceleration head-up phenomenon of the vehicle is. The electric control device 4 automatically adjusts the rigidity of the spiral spring 1 of the rear suspension to reduce uncomfortable feeling brought by accelerating head lifting to people according to the vehicle longitudinal acceleration signals collected by the sensor assembly 5; when the vehicle brakes, load is transferred to the front axle, so that the coil spring 1 of the front suspension generates corresponding compression deformation, and the smaller the stiffness of the coil spring 1 is, the larger the compression deformation amount is, and the more serious the vehicle brake nodding phenomenon is. The electric control device 4 regulates the loop current based on the acceleration of the vehicle, so that the rigidity of the spiral spring 1 can be adapted to the acceleration or deceleration action of the vehicle, and the acceleration and head-up, deceleration or brake nodding of the vehicle can be reduced.
On the basis of including the vehicle acceleration based on the regulation information, the vehicle acceleration includes a damper acceleration; the damper acceleration includes at least one of a vertical acceleration, a longitudinal acceleration, and a lateral acceleration; wherein the vertical acceleration includes any one of an acceleration of the vibration damper 8 vertically expanding and contracting and an acceleration of the vibration damper 8 fixed end vertically moving. The vehicle is provided with a plurality of shock absorbers 8, the whole acceleration of the whole vehicle can be divided into a plurality of local accelerations by taking the acceleration of the shock absorbers as the acceleration of the vehicle, so that the rigidity of each side of a suspension of the vehicle can be conveniently and respectively regulated and controlled, the rigidity of the spiral spring 1 can be regulated and controlled based on the transverse acceleration of the shock absorbers 8, the rolling characteristic of the vehicle can be regulated and controlled, and the influence of the rolling of the vehicle on the running stability and the left-right swing of the vehicle body are avoided; the steering characteristic of the vehicle can be adjusted by adjusting the rigidity of the spiral spring 1 according to the transverse acceleration of the shock absorber; for example, when the vehicle turns or changes lanes, the load applied to the partial damper 8 increases to increase the deformation amount, which leads to the rolling of the vehicle, and the stiffness of the corresponding coil spring 1 is automatically regulated based on the longitudinal acceleration of the damper, so that the bumpy feeling can be reduced, and the stability can be enhanced.
On the basis of collecting the regulation information based on the sensor assembly 5, the regulation information collected by the sensor assembly 5 comprises suspension vibration frequency, a vibration sensor can be used for collecting the suspension vibration frequency, and the electric control device 4 regulates loop current according to the suspension vibration frequency; specifically, the electric control device 4 regulates and controls the loop current in a segmented manner according to the frequency of the vibration frequency of the suspension; the frequency segments are respectively corresponding to corresponding loop currents; the electric control device 4 automatically regulates and controls loop current according to the vibration frequency of the suspension, so that the rigidity of the spiral spring 1 can be adapted to slow down corresponding road conditions, and the driving stability is improved.
In a certain embodiment, the frequency segmentation comprises a plurality of frequency segments of 0-3Hz, 3-6 Hz, 6-23 Hz, 23-30 Hz, 30-60 Hz and the like, each frequency segment corresponds to the magnitude of the loop current, and the magnitude of the loop current corresponding to each frequency segment can be calibrated through test. The frequency range 0-3Hz corresponds to driving floating feeling, the frequency range 3-6 Hz corresponds to driving swinging feeling, the frequency range 6-23 Hz corresponds to driving buffeting feeling, the frequency range 23-30 Hz corresponds to driving fluttering feeling, and the frequency range 30-60 Hz corresponds to driving tingling feeling; for example, the vibration frequency of the suspension is mainly 4.5Hz, the frequency is segmented into frequency segments of 3-6 Hz, and when the current of the loop is not in the current corresponding to the frequency segments of 3-6 Hz, the electric control device 4 regulates the current to be in the current corresponding to the frequency segments of 3-6 Hz, so that the driving comfort in different road conditions is improved.
On the basis of collecting regulation information based on the sensor assembly 5, the regulation information collected by the sensor assembly 5 comprises steering wheel rotation angle and accelerator opening, and the electric control device 4 regulates and controls loop current based on the steering wheel rotation angle and the accelerator opening; steering wheel angle can be collected using an angle sensor; the accelerator opening can be obtained by using an accelerator opening sensor, and the accelerator opening sensor can obtain the accelerator opening information, and the actual accelerator opening can be obtained by using a pedal stroke sensor to detect the stroke of an accelerator pedal or the proportion of the stroke to the maximum stroke as the accelerator opening, or can be directly obtained from a vehicle system. The electric control device 4 regulates and controls loop current according to the steering wheel angle and the accelerator opening, and can regulate the steering characteristic of the vehicle; specifically, the electric control device 4 increases or decreases the loop current when the steering wheel angle is constant and the accelerator opening degree is constant and the steering wheel angle is increased or the steering wheel angle and the accelerator opening degree are simultaneously increased. For example, in a steady state curve, the steering wheel angle is kept unchanged to gradually increase the accelerator opening degree or the vehicle speed is kept constant to gradually increase the steering wheel angle or simultaneously increase the steering wheel angle and the accelerator opening degree, and the electric control device 4 is used for automatically adjusting the rigidity of the spiral springs 1 of the front suspension and the rear suspension according to the steering wheel angle and the accelerator opening degree, so that the rigidity of the spiral spring 1 of the front suspension of the vehicle after adjustment is increased and can tend to understeer, and the steering characteristic and the safety are good; the stiffness of the front suspension coil spring 1 after adjustment is reduced, which can tend to oversteer, is beneficial to drifting and meets different driving requirements.
In addition, for better steering characteristic adjustment, vehicle acceleration and/or vehicle speed can be added to serve as adjustment information on the basis of using the accelerator opening and steering wheel rotation angle as adjustment information, the speed of the vehicle can be different when the accelerator opening is fixed, a speed sensor can be used for detecting the number of vehicles, and the stiffness of the coil spring 1 can be adjusted to meet the steering of the adaptive vehicle speed by adding the vehicle speed information; the vehicle acceleration is related to the accelerator opening, and the vehicle acceleration (such as the vehicle transverse acceleration) can be added to comprehensively regulate the rigidity of the spiral spring 1 so as to meet different driving requirements.
On the basis of collecting regulation and control information based on the sensor assembly 5, the regulation and control information collected by the sensor assembly 5 comprises vehicle speed information, a speed sensor can be used for collecting the vehicle speed information, the speed sensor can be a linear speed sensor and an angular speed sensor, the vehicle speed is calculated by combining the rotating speed or the tire size, the electric control device 4 regulates and controls loop current according to the vehicle speed, when the vehicle speed is higher, the vibration and impact suffered by the vehicle under the same road surface working condition are higher, the rigidity of the corresponding vehicle speed regulating coil spring 1 can reduce the vibration amplitude of the vehicle, and the driving stability is improved.
Based on the collection of the regulation information based on the sensor assembly 5, in a certain embodiment, the regulation information is correspondingly provided with a weighting coefficient, the weighting coefficient can be calibrated according to a driving mode, and when the regulation information comprises a plurality of items, the electric control device 4 regulates the loop current according to a comprehensive regulation value, and the comprehensive regulation value comprises the sum of products of current values corresponding to each item of regulation information and the corresponding weighting coefficient. Preferably, the weighted coefficient sum of each item of regulation information is 1. For example, the regulation information includes vehicle acceleration and suspension vibration frequency, the weighting coefficients of the regulation information are 0.7 and 0.3 respectively, wherein the loop current value corresponding to the vehicle acceleration is a 1, the loop current value corresponding to the frequency segment where the suspension vibration frequency is located is a 2, the comprehensive regulation value is a 0＝0.7A1+0.3A2, and the electric control device 4 determines the final loop current according to the comprehensive regulation value a 0.
On the basis that the regulation information is correspondingly provided with a weighting coefficient, the current of the regulating loop of the electric control device is calibrated into a plurality of gears, and the comprehensive regulation value obtained by weighting and calculating the plurality of regulation information corresponds to different gears with loop current.
In some embodiments, the conductive fluid comprises a conductive magnetic fluid and a metallic water body, i.e., the conductive fluid may be a conductive magnetic fluid and/or a metallic water body and/or other fluid that changes viscosity (relates to current) when conductive; the conductive magnetic fluid is spirally formed into a coil in the spiral spring 1, a magnetic field is generated after the conductive magnetic fluid is electrified, the viscosity of the conductive magnetic fluid is increased under the action of the magnetic field, and the rigidity of the spiral spring 1 can be changed; the metal water conjunct is characterized in that the atomic bond on the metal surface can be enhanced after being electrified, and the hardness is increased; when the current is cut off or reduced, the atomic bonds are weakened, the material can be softer, the damage resistance is stronger, the ductility is better, and the rigidity of the spiral spring 1 can be quickly adjusted as the conductive fluid.
In a certain embodiment, the first electrode 2 is specifically described, the first motor comprises an electrode connecting sheet 21 and an exciting coil, the electrode connecting sheet 21 is arranged at one end of the spiral spring 1 and is connected with conductive fluid, the exciting coil is arranged at the end of the spring wire, and two ends of the exciting coil are connected with the electrode connecting sheet and the electric control device 4; the second electrode 3 may be substantially identical to the first electrode 2, and also includes an electrode connecting piece 21 and an exciting coil; after the excitation coil is electrified, the excitation coil can generate a magnetic field, and when the conductive magnetic fluid is used as the conductive fluid, the viscosity of the conductive fluid can be increased and adjusted. When the hollow spring wire is particularly used, the sealing end covers 11 are arranged at the two end parts of the hollow spring wire, the electrode connecting sheets 21 are fixedly arranged on the sealing end covers 11 and are in contact with and connected with conductive fluid, the exciting coil is fixedly arranged on the electrode connecting sheets 21, and the axial direction of the exciting coil is tangential or approximately tangential to the spiral trend of the spring wire.
In some embodiments, an insulating layer is arranged in the hollow structure of the spiral spring 1 and is used for isolating the spiral spring 1 wire from the conductive fluid; the insulating layer is fixedly connected with the hollow structure in an adapting way, and the hollow structure and the insulating layer can be cylindrical structures; the insulating layer can prevent potential safety hazards caused by the conduction of the coil spring 1.
It should be noted that, the circuit in the electric control device 4 for adjusting the conductive fluid circuit can gradually adjust the current in a smooth manner, and can also select to adjust the current in a gear manner; when the gear type adjustment is adopted, the electric control device 4 is calibrated with a plurality of gears, and the percentage range of the maximum value of the current occupied by the gears is 0-100%, and can be any percentage between the gears, including but not limited to 0%, 25%, 50%, 75% and 100%.
In another aspect of the present invention, there is also provided a method of adjusting the stiffness of a coil spring having an adjustable stiffness, using the coil spring having an adjustable stiffness provided by the present invention, the method of adjusting the stiffness comprising,
S1, acquiring regulation and control information for triggering an electric control device 4 to regulate and control the loop current;
S2, judging whether the regulation and control information meets the regulation and control conditions of the electric control device 4 for regulating and controlling the loop current;
and S3, when the regulation and control information meets the regulation and control conditions, the electric control device 4 automatically regulates and controls the current in the loop according to the regulation and control information.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, the adjusting information comprises at least one of accelerator opening, suspension vibration frequency, steering wheel rotation angle, vehicle acceleration or vehicle speed;
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the S2 step, whether the adjusting and controlling information meets the adjusting and controlling condition of the loop current adjusted and controlled by the electric control device 4 is judged, whether the vehicle acceleration is larger than or equal to a preset acceleration threshold value is judged, and if yes, the adjusting and controlling information meets the adjusting and controlling condition is judged.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the S2 step, whether the adjusting and controlling information meets the adjusting and controlling condition of the loop current adjusted and controlled by the electric control device 4 is judged, whether the frequency section where the vibration frequency of the suspension is located corresponds to the loop current is judged, and if not, the adjusting and controlling information meets the adjusting and controlling condition is judged.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the step S2, whether the adjusting and controlling information meets the adjusting and controlling condition of the loop current adjusted and controlled by the electric control device 4 is judged, and the adjusting and controlling information meets the adjusting and controlling condition when the steering wheel angle is increased or the accelerator opening is increased or the steering wheel angle and the accelerator opening are increased simultaneously or not.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the S3 step, the electric control device 4 automatically adjusts and controls the current in the loop according to the adjusting and controlling information, wherein the method comprises the step of automatically adjusting and controlling the current of the loop when the vehicle acceleration is larger than or equal to a preset acceleration threshold value; the loop current increases as the vehicle acceleration value increases.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the S3 step, the electric control device 4 automatically adjusts and controls the current in the loop according to the adjusting and controlling information, and the method comprises the step of adjusting and controlling the current of the loop in a sectional mode according to the frequency of the vibration frequency of the suspension; the frequency segments each correspond to a respective loop current.
According to the stiffness adjusting method of the stiffness-adjustable spiral spring, in the step S3, the electric control device 4 automatically adjusts and controls the current in the loop according to the adjusting and controlling information, and the loop current is increased or reduced when the steering wheel angle is constant and the accelerator opening degree or the accelerator opening degree is constant and the steering wheel angle is increased or the steering wheel angle and the accelerator opening degree are increased simultaneously.
In actual use, the spiral spring 1 device is fixedly sleeved on the shock absorber 8, so that the two ends of the spiral spring 1 are fixedly connected with the fixed end and the movable end of the shock absorber 8 respectively; the spiral spring 1 device which is connected with the shock absorber 8 into a whole is arranged on the front suspension and the rear suspension of the vehicle; the sensors of all functions of the sensor assembly 5 are connected with corresponding components to collect regulation and control information, such as an acceleration sensor is arranged on the movable end of the shock absorber 8 to collect acceleration information of the shock absorber 8, a pedal travel sensor is connected with an accelerator pedal to collect accelerator opening information, an angle sensor is connected with a steering wheel to collect steering wheel corner information, a vibration sensor is arranged on a vehicle suspension to collect suspension vibration frequency, and a speed sensor is arranged on the vehicle suspension to collect vehicle speed information; the sensor assembly 5 is in communication connection with the electric control device 4, so that the electric control device 4 automatically regulates and controls the current in the loop according to the regulation and control information collected by the sensor assembly 5, and the rigidity of each spiral spring 1 on each suspension is automatically regulated, so that the rigidity can meet various road conditions or vehicle driving actions.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A coil spring with adjustable rigidity, characterized in that: comprising the steps of (a) a step of,
The coil spring (1), the spring wire of the said coil spring (1) is the hollow structure;
The conductive fluid is arranged in the hollow structure of the spiral spring (1) and can directly or under the action of a magnetic field after being electrified, so that the viscosity of the conductive fluid changes;
The first electrode (2) is arranged at one end of the spiral spring (1);
the second electrode (3) is arranged at the other end of the spiral spring (1);
the electric control device (4), the electric control device (4) is electrically connected with the first electrode (2), the conductive fluid and the second electrode (3) to form a loop, and the loop is used for regulating and controlling the current in the loop.
2. A coil spring having an adjustable stiffness as claimed in claim 1, wherein: the first electrode (2) comprises an electrode connecting sheet (21) arranged at one end of the spiral spring (1), and an exciting coil arranged at the end part of the spring wire and two ends of the exciting coil are respectively and electrically connected with the electrode connecting sheet (21) and the electric control device (4).
3. A coil spring having an adjustable stiffness as claimed in claim 1, wherein: an insulating layer is arranged in the hollow structure of the spiral spring (1) and used for isolating the spring wire from the conductive fluid.
4. A coil spring with adjustable rigidity as claimed in any one of claims 1 to 3, wherein: also comprises a sensor assembly (5), wherein the sensor assembly (5) is used for collecting regulation and control information; the electric control device (4) can regulate and control the current in the loop according to the regulation and control information, so as to regulate the rigidity of the spiral spring (1).
5. A coil spring having an adjustable stiffness as set forth in claim 4, wherein: the regulation and control information comprises vehicle acceleration, and the electric control device (4) automatically regulates and controls the loop current when the vehicle acceleration is greater than or equal to a preset acceleration threshold value; the loop current increases as the vehicle acceleration value increases.
6. A coil spring of adjustable stiffness as set forth in claim 5, wherein: the vehicle acceleration includes a damper acceleration; the damper acceleration includes at least one of a vertical acceleration, a longitudinal acceleration, or a lateral acceleration; the vertical acceleration comprises the vertical telescopic acceleration of the shock absorber or the vertical moving acceleration of the fixed end of the shock absorber.
7. A coil spring having an adjustable stiffness as set forth in claim 4, wherein: the regulation and control information comprises suspension vibration frequency, and the electric control device (4) regulates and controls the loop current in a segmented mode according to the frequency of the suspension vibration frequency; the frequency segments each correspond to a respective loop current.
8. A coil spring having an adjustable stiffness as set forth in claim 4, wherein: the regulation and control information comprises steering wheel rotation angle and accelerator opening; the electric control device (4) increases or decreases the loop current when the steering wheel angle is constant and the accelerator opening is constant and the steering wheel angle is increased or the steering wheel angle and the accelerator opening are simultaneously increased.
9. A coil spring having an adjustable stiffness as set forth in claim 4, wherein: the control information is correspondingly provided with weighting coefficients, and when the control information comprises a plurality of items, the electric control device (4) adjusts the loop current according to comprehensive control values, wherein the comprehensive control values comprise the sum of products of current values corresponding to each item of control information and the corresponding weighting coefficients.
10. A rigidity adjusting method of a rigidity-adjustable spiral spring is characterized by comprising the following steps: use of a coil spring of adjustable stiffness according to any of claims 4 to 9, the stiffness adjustment method comprising,
Acquiring regulation and control information for triggering an electric control device (4) to regulate and control the loop current;
Judging whether the regulation information meets the regulation condition of regulating the loop current by the electric control device (4);
When the regulation and control information meets the regulation and control conditions, the electric control device (4) automatically regulates and controls the current in the loop corresponding to the regulation and control information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410995952.5A CN118959504A (en) | 2024-07-24 | 2024-07-24 | A spiral spring with adjustable stiffness and a stiffness adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410995952.5A CN118959504A (en) | 2024-07-24 | 2024-07-24 | A spiral spring with adjustable stiffness and a stiffness adjustment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118959504A true CN118959504A (en) | 2024-11-15 |
Family
ID=93401912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410995952.5A Pending CN118959504A (en) | 2024-07-24 | 2024-07-24 | A spiral spring with adjustable stiffness and a stiffness adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118959504A (en) |
-
2024
- 2024-07-24 CN CN202410995952.5A patent/CN118959504A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4972440B2 (en) | Control device for damping force variable damper | |
| KR102716490B1 (en) | Vehicle integrated control method and system | |
| US7270335B2 (en) | Electromagnetic suspension apparatus for automotive vehicles and method for controlling electric motor of the same | |
| JP2005119548A (en) | Suspension device of electric vehicle | |
| JP2007302211A (en) | Suspension system | |
| JPS60248417A (en) | Active suspension apparatus | |
| KR20110058792A (en) | Method and apparatus for controlling semi-active suspension for motorcycle | |
| US20180250999A1 (en) | Suspension system and method for controlling suspension system | |
| CN111137096A (en) | Control system for variable damping force damper | |
| CN117656731B (en) | Control method and control system of suspension assembly and vehicle | |
| CN208615671U (en) | A vehicle suspension damping control system | |
| JPH09109757A (en) | Suspension device for vehicle seat | |
| CN115610567A (en) | Inverted tricycle type and control method of active suspension of inverted tricycle type | |
| JP5316279B2 (en) | Vehicle vibration suppression device | |
| CN118959504A (en) | A spiral spring with adjustable stiffness and a stiffness adjustment method | |
| CN102892599B (en) | Vehicle suspension device | |
| JP4643416B2 (en) | Vehicle vibration control device | |
| JP5162283B2 (en) | Control device and control method for damping force variable damper | |
| JP4941416B2 (en) | Vehicle suspension system | |
| JP2011143770A (en) | Suspension device | |
| JP2008162333A (en) | Vehicle suspension system | |
| JP2009241726A (en) | Vehicle suspension device | |
| JP5272799B2 (en) | Vehicle suspension system | |
| JP4867587B2 (en) | Vehicle suspension system | |
| CN110733333B (en) | An electric wheel system with in-wheel motor also serving as the mass of dynamic vibration absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |