CN111873740A

CN111873740A - Suspension height adjusting method, suspension system and vehicle

Info

Publication number: CN111873740A
Application number: CN202010901510.1A
Authority: CN
Inventors: 张俊
Original assignee: Hunan Xingbida Netlink Technology Co Ltd
Current assignee: Hunan Xingbida Netlink Technology Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-03

Abstract

The application provides a suspension height adjusting method, a suspension system and a vehicle, which relate to the field of vehicle parts and comprise the following steps: a calibration step: obtaining the height of the suspension under the somatosensory comfortable vibration frequency according to the somatosensory comfortable vibration frequency of the vehicle, and defining the height as a calibrated suspension height; the collection step comprises: acquiring the real-time suspension height of a vehicle, and defining the real-time suspension height as the real-time suspension height; a comparison step: comparing the real-time suspension height with the calibrated suspension height, and determining whether the real-time suspension height is the same as the calibrated suspension height; and (3) adjusting: if the real-time suspension height is the same as the calibrated suspension height, repeating the collecting step and the comparing step; and if the real-time suspension height is different from the calibrated suspension height part, adjusting the real-time suspension height to be the calibrated suspension height, and then repeating the acquisition step and the comparison step. The real-time suspension height is adjusted to be the calibrated suspension height, so that the body feeling comfortable vibration frequency can be provided for passengers all the time when the vehicle runs, and the riding comfort of the passengers is ensured.

Description

Suspension height adjusting method, suspension system and vehicle

Technical Field

The application relates to the field of vehicle components, in particular to a suspension height adjusting method, a suspension system and a vehicle.

Background

The suspension of the vehicle is an important component of a vehicle chassis system, and mainly has the functions of transmitting all forces and moments between the wheels and a frame or a vehicle body, inhibiting the impact of a road to the vehicle body, buffering vibration and ensuring that the wheels have ideal motion characteristics when the road is uneven and the load changes. In the prior art, a suspension system generally comprises a guide mechanism, an elastic element, a shock absorber and the like, and the structures and parameters of the components are key factors influencing smoothness and operating stability.

The main parameter of the elastic element is its own structural rigidity, which mainly plays a role in damping vibrations. In the process of driving a vehicle, a human body feels comfortable vibration frequency, and main factors influencing the frequency comprise the spring load mass on a suspension and the rigidity of an elastic element. For most vehicles, the sprung mass changes with the load of the vehicle, and if the rigidity is certain, the offset frequency changes inevitably, so that the comfort of passengers is reduced.

Disclosure of Invention

In view of this, the present application provides a suspension height adjusting method, a suspension system and a vehicle, and aims to achieve suspension height adjustment.

In a first aspect, the present application provides a suspension height adjustment method for adjusting a suspension height of a vehicle, the vehicle including a frame and an axle, the suspension height being formed as a distance between the axle and the frame; the suspension height adjusting method comprises the following steps:

a calibration step: obtaining the height of the suspension under the somatosensory comfortable vibration frequency according to the somatosensory comfortable vibration frequency of the vehicle, and defining the height as a calibrated suspension height;

the collection step comprises: acquiring the real-time suspension height of a vehicle, and defining the real-time suspension height as the real-time suspension height;

a comparison step: comparing the real-time suspension height with the calibrated suspension height, and determining whether the real-time suspension height is the same as the calibrated suspension height;

and (3) adjusting: if the real-time suspension height is the same as the calibrated suspension height, repeating the collecting step and the comparing step; and if the real-time suspension height is different from the calibrated suspension height part, adjusting the real-time suspension height to be the calibrated suspension height, and then repeating the acquisition step and the comparison step.

In a second aspect, the present application provides a suspension system disposed between a vehicle frame and an axle, the suspension system comprising:

the conduction mechanism is connected with the frame;

the mounting mechanism is connected with the axle;

the position of the conduction mechanism relative to the mounting mechanism includes a predetermined position to which the suspension system can be adjusted to return the conduction mechanism in a state in which the conduction mechanism is forced to move relative to the mounting mechanism out of the predetermined position.

Preferably, the conducting means is capable of being held in a predetermined position relative to the mounting mechanism at least via magnetic force;

the conduction mechanism moves relative to the mounting mechanism along a predetermined direction, and the mounting mechanism comprises a first surface and a second surface which face each other in the predetermined direction; the conduction mechanism includes:

a force receiving member located in a space where both the first surface and the second surface face each other;

and the guide assembly is connected with the stress member and the frame and is used for guiding the motion of the stress member along the preset direction.

Preferably, the predetermined direction is a vertical direction, and the mounting mechanism further comprises:

a first magnet assembly and a second magnet assembly disposed on the first surface and the second surface, respectively;

the third magnet assembly and the fourth magnet assembly are respectively arranged on the upper side part of the stressed member and the lower side part of the stressed member;

the first magnet assembly applies a first magnetic force in a vertical upward direction to the third magnet assembly, and the second magnet applies a second magnetic force in a vertical upward direction to the fourth magnet; the first and second magnetic forces are each adjustable as the force-receiving member rotates about an axis extending in the vertical direction such that a height of the force-receiving member relative to the mounting mechanism varies.

Preferably, a plurality of unit magnet members are arranged at equal intervals in the circumferential direction of the rotation locus of the force receiving member on the first surface to form a first magnet assembly;

a plurality of the unit magnet members are arranged at equal intervals along the circumferential direction on the second surface to form a second magnet assembly;

a plurality of the unit magnet members are arranged at equal intervals along the circumferential direction on an upper side portion of the force receiving member to form a third magnet assembly;

a plurality of the unit magnet members are arranged at equal intervals along the circumferential direction on a lower side portion of the force receiving member to form a fourth magnet assembly.

Preferably, the unit magnet members are formed in a fan shape;

the number of the unit magnet members forming the first, second, third and fourth magnet assemblies is the same;

the first, second, third, and fourth magnet assemblies comprise the following positions:

orthographic projections of the first, second, third and fourth magnet assemblies on a plane perpendicular to the vertical direction coincide.

Preferably, the guide assembly comprises:

a guide member connected with the force receiving member, the guide member penetrating the first surface such that a portion of the guide member is exposed to an outside portion of the mounting mechanism;

a first driving member provided to a portion of the guide member exposed to the outside portion of the mounting mechanism, the first driving member being capable of driving the guide member and the force receiving member to rotate, and the first driving member being capable of being locked.

Preferably, the mounting mechanism includes an upper mounting member and a lower mounting member connected to each other in the vertical direction, the first surface being formed on the upper mounting member, the second surface being formed on the lower mounting member;

the first drive member is formed as a worm gear, the guide assembly further comprising a worm engaged with the worm gear, the worm gear and the worm being configured such that movement of the worm gear while driving the worm is prevented;

the suspension system further includes a first stopper member formed on the first surface, and a second stopper member formed on the second surface, an upper side portion of the first stopper member and a lower side portion of the second stopper member each being formed as a flexible portion.

Preferably, the suspension system further comprises:

the sensing mechanism is used for monitoring the relative position of the frame and the axle and generating a position signal;

the control mechanism is electrically connected with the sensing mechanism and is used for receiving the position signal;

the control mechanism adjusts the suspension system using the suspension height adjustment method described above.

In a second aspect, the present application provides a vehicle comprising a suspension system as described above.

According to the suspension height adjusting method, the real-time suspension height can be adjusted to be the calibrated suspension height by utilizing the matching of the calibrating step, the collecting step, the comparing step and the adjusting step, so that the comfortable vibration frequency of a passenger can be provided for the passenger all the time when the vehicle runs, and the riding comfort of the passenger is ensured.

The application provides a suspension system, when the suspension height is forced to change and is makeed conduction mechanism to break away from preset position, suspension system can be adjusted to make the atress component reset to preset position, thereby realize becoming rigidity regulation, make the suspension height be in reasonable scope, and make the vehicle no matter be in no-load or full-load or be located under the state between no-load and full-load and all can provide comparatively comfortable vibration frequency for the passenger, whole car travelling comfort consequently improves greatly.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic view in partial cross-section of an isometric view of a suspension system;

FIG. 2 shows a schematic diagram of an exploded view of a suspension system;

FIG. 3 is a schematic diagram showing a partial cross-sectional view of a front view of a suspension system;

FIG. 4a shows a schematic diagram of a coincidence condition of the suspension system;

FIG. 4b shows a schematic diagram of a staggered state of the suspension system;

fig. 5 shows a schematic diagram of a control process of the suspension system.

Reference numerals:

1-an installation mechanism; 11-upper mounting means; 12-a first surface; 13-an upper restraining member; 14-a lower mounting member; 15-a second surface; 16-a lower limiting member;

2-a conducting mechanism; 21-a guide member; 22-a force-bearing member; 23-a worm gear;

3-a unit magnet member; 4-a first magnet assembly; 5-a second magnet assembly; 6-a third magnet assembly; 7-a fourth magnet assembly;

a-a coincidence state; b-interleaved state.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The suspension system provided by the present embodiment includes a conduction mechanism, a mounting mechanism, a sensing mechanism, and a control mechanism, and the connection relationship and the operation principle of these components will be described in detail below with reference to fig. 1 to 5.

As shown in fig. 2, in an embodiment, the mounting mechanism 1 may include an upper mounting member 11 and a lower mounting member 14 connected to each other in the vertical direction. Specifically, each of the upper mounting member 11 and the lower mounting member 14 may be formed in a cylindrical shape, the upper mounting member 11 may have only an upper bottom portion and be opened downward, and the lower mounting member 14 may have only a lower bottom portion and be opened upward. Further, the inner diameter of the upper mounting member 11 may be slightly smaller than the outer diameter of the lower mounting member 14, whereby as shown in fig. 1, the upper mounting member 11 may be sleeved on the outer side portion of the lower mounting member 14, which form a plug-in fit, and such that the interior of the mounting mechanism 1 defines a cylindrical mounting space.

In the embodiment, as shown in fig. 3, the installation space is defined in the vertical direction (i.e., in the axial direction) by the upper bottom and the lower bottom, and for convenience of description, a downward surface of the upper bottom is defined as a first surface 12, and an upward behavior of the lower bottom is defined as a second surface 15. The first surface 12 may be provided with a first magnet assembly 4 and the second surface 15 may be provided with a second magnet assembly 5. The function of the first magnet assembly 4 and the second magnet assembly 5 will be explained in detail in the following description.

On the basis of the above-described features, with continued reference to fig. 3, the conduction mechanism 2 includes the guide member 21, the force receiving member 22, and the worm wheel 23. The worm wheel 23 may be provided to the guide member 21, and the guide member 21 may be connected with the force receiving member 22. The force receiving member 22 may be formed in a disc shape which can be disposed in the mounting space, i.e., between the first surface 12 and the second surface 15 as described above, and it will be understood that the diameter of the force receiving member 22 is slightly smaller than the inner diameter of the cylindrical mounting space (i.e., the inner diameter of the lower mounting member 14) to ensure that the force receiving member 22 can move up and down in the mounting space relative to the mounting mechanism 1. Further, it is understood that the mounting member comprises two bottom surfaces facing away from each other in the vertical direction, hereinafter defined as an upper side portion and a lower side portion, respectively, wherein the upper side portion may be provided with the third magnet assembly 6 and the lower side portion may be provided with the fourth magnet assembly 7.

In an embodiment, the first magnet assembly 4 may exert a vertically upward attractive force on the third magnet assembly 6, and the second magnet assembly 5 may exert a vertically upward repulsive force on the fourth magnet assembly 7, whereby the gravity of the conduction mechanism 2 itself can be levitated in the installation space balanced by the attractive and repulsive forces. In an embodiment, the first magnet assembly 4, the second magnet assembly 5, the third magnet assembly 6 and the fourth magnet assembly 7 may each be formed by a unit magnet member 3. Referring to the coincidence state a shown in fig. 4a in conjunction with fig. 1 and 2, the coincidence state a shown in fig. 4a can be understood as a state in which four magnet assemblies completely coincide when the four magnet assemblies are viewed in the vertical direction, and thus the view of the coincidence state a can be regarded as an arrangement of any one of the four magnet assemblies.

With continued reference to the coincidence state a shown in fig. 4a, each magnet assembly may include a plurality of unit magnet members 3, for example, five unit magnet members 3, and the unit magnet members 3 may be formed in a fan shape and arranged at equal intervals in the circumferential direction. For any one of the unit magnet members 3, its two side portions facing each other in the vertical direction may be formed as the N-pole and S-pole of the unit magnet member, respectively. Thus, the S poles of the unit magnet members 3 in the first magnet assembly 4 disposed on the first surface 12 may all be directed downward, and correspondingly, the N poles of the unit magnet members 3 in the third magnet assembly 6 disposed on the upper side portion of the force receiving member 22 may all be directed upward, and therefore, the first magnet assembly 4 can apply an attractive force to the third magnet assembly 6. Similarly, the S-poles of the unit magnet members 3 in the second magnet assembly 5 disposed on the second surface 15 may all face upward, and the S-poles of the unit magnet members 3 in the fourth magnet assembly 7 disposed on the lower side portion of the force receiving member 22 may all face downward, and therefore, the second magnet assembly 5 can apply a repulsive force to the fourth magnet assembly 7.

Due to the fact that the four magnet assemblies all use the same unit magnet members 3 and the unit magnet members 3 are all arranged at equal intervals in the circumferential direction, on the one hand, the design of the suspension system is particularly facilitated, and on the other hand, when the suspension system is in the overlap state a, the force receiving member 22 is rotated so that the suspension system enters the staggered state B shown in fig. 4B, i.e. the third magnet assembly 6 is no longer aligned with the first magnet assembly 4 and the fourth magnet assembly 7 is no longer aligned with the second magnet assembly 5, in which case, since the two unit magnet members 3 (hereinafter referred to as a group of unit magnet members 3) aligned with each other, which are equivalent to two of the two magnet assemblies respectively opposite to each other, are staggered in the circumferential direction, the forces between the five groups of unit magnet assemblies are reduced by the same amount in synchronism with the two magnet assemblies opposite to each other, this enables the force receiving member 22 to be always kept in force balance, having performed smooth movement.

As a means for further ensuring the smooth movement of the force receiving member 22, referring to fig. 2, the guide member 21 may be formed as a guide post, which may be formed in a cylindrical shape, the lower end of which may be connected with the upper side portion of the force receiving member 22, the upper end of which may penetrate the upper bottom portion of the upper mounting member 11 and be partially exposed outside the mounting mechanism 1, and the upper end of which may be provided with a worm wheel 23, and the worm wheel 23, the guide member 21, and the force receiving member 22 may be coaxially disposed, whereby the movement of the force receiving member 22 in the vertical direction is guided via the cooperation of the hole portion through which the guide member 21 penetrates and the guide member 21, achieving the purpose of further ensuring the smooth movement of the force receiving member 22.

The guide member 21 may be connected to a frame of a vehicle, and the worm wheel 23 may be driven to rotate by a worm (not shown), so that it can be understood that when the worm wheel 23 rotates, the guide member 21 and the force receiving member 22 rotate synchronously, and the above-described rotation process of the force receiving member 22 occurs. As an advantageous option, the worm wheel 23 and the worm meshing with each other may be configured as a self-locking fit, that is, only the worm as the driving piece can drive the worm wheel 23 to rotate when rotating, and the worm wheel 23 as the driving piece cannot drive the worm to rotate, whereby, whenever the worm is driven to adjust the position of the worm wheel 23, once the worm no longer drives the worm wheel 23, the position of the worm wheel 23 is relatively fixed, so that the position of the force receiving member 22 in the circumferential direction is relatively fixed.

As mentioned above, when the force receiving member 22 rotates, the magnetic force received by the third magnet assembly 6 and the fourth magnet assembly 7 disposed on the force receiving member 22 will change. Taking the third magnet assembly 6 as an example, when the overlapping area of the five unit magnet members 3 with the five unit magnet members 3 in the first magnet assembly 4 in the vertical direction is decreased (hereinafter, the overlapping area is decreased), the attractive force of the first magnet assembly 4 to the third magnet assembly 6 is decreased, and conversely, the attractive force is increased (i.e., the overlapping area is increased).

It will be appreciated that as the attractive force of the first magnet assembly 4 to the third magnet assembly 6 decreases, the repulsive force of the second magnet assembly 5 to the fourth magnet assembly 7 will also decrease, at which point the force-receiving member 22 will drop away from the first magnet assembly 4 and closer to the second magnet assembly 5, and eventually again equilibrate in another position lower than the original position. The ascending process and the descending process of the force-receiving member 22 are similar and will not be described in detail herein. Still referring to fig. 2, in order to avoid collision between the first magnet assembly 4 and the third magnet assembly 6, and collision between the second magnet assembly 5 and the fourth magnet assembly 7, the first surface 12 may be formed with a plurality of upper limiting members 13 extending downward, the second surface 15 may be formed with a plurality of lower limiting members 16 extending upward, both the lower end of the upper limiting member 13 and the upper end of the lower limiting member 16 may be formed as flexible portions, which may be formed of flexible materials such as rubber, for example, the upper limiting member 13 may include a skeleton connected to the first surface 12, and the outside of the skeleton may be covered with rubber, and similarly, the lower limiting member 16 is also a similar structure, and will not be described herein again. Due to the provision of the upper and lower limiting

members

13, 16, the upper limit position of the force receiving member 22 is defined by the upper limiting member 13 and the lower limit position is defined by the lower limiting member 16, while the force receiving member 22 forms a flexible abutting fit with both the upper and lower limiting

members

13, 16, whereby collisions of the first magnet assembly 4 with the third magnet and collisions of the second magnet assembly 5 with the fourth magnet assembly 7 are avoided.

In an embodiment, a control mechanism (not shown) and a sensing mechanism (not shown) are used to regulate the rotation of the worm wheel 23. Referring to fig. 5, the sensing mechanism may include a height sensor for detecting the height of the suspension and outputting a potential signal. Suspension height, as referred to herein, is a well known term in the art and is meant to refer to the distance between the vehicle frame and the center of the axle. In embodiments in which the suspension system is provided between the frame of the vehicle and the axle, the guide member 21 may be connected to the frame, as already mentioned above, and it is further explained here that the mounting mechanism 1 may be connected to the axle. It can therefore be understood that when the force-receiving member 22 is raised in the vertical direction, the suspension height will be raised, whereas the suspension height will be lowered.

In an embodiment, the control mechanism may be formed as an electronic control unit, the electronic control unit may receive a potential signal of the height sensor and convert the potential signal into a height signal, and meanwhile, according to the height signal, determine whether a real-time suspension height given by the height signal is equal to a suspension height (i.e., a calibrated height) when the stressed member 22 is at a predetermined position, if the real-time suspension height is not equal to the calibrated height, the electronic control unit controls a motor disposed on the vehicle frame to drive a worm, so that the worm wheel 23 rotates to adjust the overlapping area, and further controls the height of the stressed member 22, so that the suspension height is restored to the calibrated height, and the conducting mechanism and the mounting mechanism together form an elastic element, that is, the elastic element is equivalent to adjusting the rigidity of the suspension system. On the basis, after the real-time suspension height is adjusted to the calibration height, the real-time suspension height is continuously obtained according to the method and then compared with the calibration height. In addition, if the obtained real-time suspension height is equal to the calibrated height, the real-time suspension height is continuously collected and compared with the calibrated height again.

When the suspension height is the above nominal height, the vehicle can provide comfortable vibration frequency to the passengers, and the vibration frequency may be 1.5Hz, for example. And in the embodiment where the force receiving member 22 is in a predetermined position, it will be appreciated that the opposed magnet assemblies are already in the interleaved state B shown in figure 4B. In addition, the height sensor can be arranged on the vehicle frame, the sensing mechanism can further comprise a connecting rod assembly (namely comprising a plurality of hinged rod members), one end of the connecting rod assembly is hinged to the middle of the vehicle axle, the other end of the connecting rod assembly is hinged to the height sensor, when the height of the suspension changes, the rod members hinged to the height sensor rotate, and the height sensor picks up the angle change information and further outputs a potential signal.

Thus, when the suspension height is forced to change (i.e., not due to a change in the suspension system, such as an increase or decrease in the load of the vehicle) such that the force-receiving member 22 is forced to move away from the predetermined position, the suspension system can be adjusted such that the force-receiving member 22 is reset to the predetermined position, thereby achieving a variable stiffness adjustment such that the suspension height is within a reasonable range, and such that the vehicle can provide a more comfortable vibration frequency for the occupant regardless of whether the vehicle is empty or full or between empty and full, and thus the overall comfort is greatly improved. In addition, the suspension system provided by this embodiment uses magnetic levitation to control the position of the stressed member 22, so that the movement process of the stressed member 22 has no unnecessary friction loss due to the non-contact mechanical characteristics of magnetic levitation and the advantages of adjustability and controllability, and the response of the process of adjusting the position of the stressed member is faster.

The embodiment also provides a vehicle, which comprises the above suspension system, wherein the installation mode of the suspension system is already mentioned, and is not described herein any more, and the vehicle also has the above beneficial effects, and is not described herein any more.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all changes that can be made in the details of the present application and the equivalents thereof, or directly or indirectly applied to other related technical fields, without departing from the spirit of the present application are intended to be embraced therein.

Claims

1. A suspension height adjusting method is characterized in that the method is used for adjusting the suspension height of a vehicle, the vehicle comprises a frame and an axle, and the suspension height is formed as the distance between the axle and the frame; the suspension height adjusting method comprises the following steps:

2. A suspension system disposed between a vehicle frame and an axle, the suspension system comprising:

the conduction mechanism is connected with the frame;

the mounting mechanism is connected with the axle;

3. The suspension system of claim 2,

the conducting means is capable of being held in a predetermined position relative to the mounting mechanism at least via magnetic force;

4. The suspension system of claim 3, wherein the predetermined direction is a vertical direction, the mounting mechanism further comprising:

5. The suspension system of claim 4,

a plurality of unit magnet members arranged at equal intervals along a circumferential direction of a rotation locus of the force receiving member on the first surface to form a first magnet assembly;

6. The suspension system of claim 5,

the unit magnet members are formed in a fan shape;

7. The suspension system of claim 4, wherein the steering assembly comprises:

8. The suspension system of claim 7,

the mounting mechanism includes an upper mounting member and a lower mounting member connected to each other in the vertical direction, the first surface being formed on the upper mounting member, the second surface being formed on the lower mounting member;

9. The suspension system of claim 4, further comprising:

the control mechanism adjusts the suspension system using the suspension height adjustment method described in claim 1.

10. A vehicle characterized in that it comprises a suspension system according to any one of claims 2 to 9.