WO2021073652A1 - Procédé et système permettant de régler la hauteur d'un système de suspension - Google Patents

Procédé et système permettant de régler la hauteur d'un système de suspension Download PDF

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Publication number
WO2021073652A1
WO2021073652A1 PCT/CN2020/122008 CN2020122008W WO2021073652A1 WO 2021073652 A1 WO2021073652 A1 WO 2021073652A1 CN 2020122008 W CN2020122008 W CN 2020122008W WO 2021073652 A1 WO2021073652 A1 WO 2021073652A1
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WO
WIPO (PCT)
Prior art keywords
connecting portion
air spring
pneumatic valve
height
working stroke
Prior art date
Application number
PCT/CN2020/122008
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English (en)
Chinese (zh)
Inventor
张晓锋
孙国
于曼华
冯永江
张加
Original Assignee
安路普（北京）汽车技术有限公司
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Publication of WO2021073652A1 publication Critical patent/WO2021073652A1/fr

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    • 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
    • B60G17/0152—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 action on a particular type of suspension unit
    • B60G17/0155—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 action on a particular type of suspension unit pneumatic unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control
    • B60G2800/914—Height Control System

Definitions

  • the invention relates to the field of height adjustment of a suspension system, in particular to a method and a system for adjusting the height of a suspension system.
  • the existing suspension system mainly realizes the function of height adjustment through an electronic control method or a mechanical method.
  • the electronic control adjustment method is mainly to use the sensor to collect the height signal, and send the collected height signal to the central processor.
  • the central processor calculates the corresponding control signal and sends the control signal to the corresponding actuator.
  • the actuator controls the air spring to inflate or deflate to achieve height adjustment.
  • the mechanical adjustment method is mainly realized by the linkage and cooperation of multiple mechanical parts.
  • CN206155232U discloses a seat. The seat passes through a first rotating plate, a rotating part, a limit plate, and a limiter.
  • the coordinated linkage between the position pin and the limit groove realizes the height adjustment of the seat.
  • the present invention is proposed to provide a method and system for adjusting the height of a suspension system that overcomes the above problems or at least partially solves the above problems.
  • a method for adjusting the height of a suspension system comprising:
  • the pneumatic valve collects at least one movement variable of the first connecting portion relative to the second connecting portion
  • the pneumatic valve changes its working stroke according to the collected motion variable and/or the change of the motion variable, so that the air spring is connected with the air source to generate a gas flow connection, and the air spring is inflated; or , So that a gas flow connection is generated between the air spring and the atmosphere, the air spring is deflated, and the height adjustment is realized.
  • a system for adjusting the height of a suspension system comprising a first connecting part, a second connecting part, at least one pneumatic valve and an air spring;
  • the pneumatic valve and the air spring are arranged between the first connecting part and the second connecting part, and the positions of the pneumatic valve and the air spring are adapted;
  • the gas output end of the pneumatic valve is connected to the gas input end of the air spring
  • the pneumatic valve is used to collect at least one movement variable of the first connecting portion relative to the second connecting portion; at the same time, change its work according to the collected movement variable and/or the change of the movement variable Stroke, so that the air spring is connected with the air source to achieve gas flow connection, and the air spring is inflated; or, the air spring is connected to the atmosphere to achieve the air spring deflation and height adjustment .
  • the technical solution of the present invention collects at least one movement variable of the first connection part relative to the second connection part through a pneumatic valve, and changes its work according to the collected movement variable and/or the change of the movement variable. Stroke, so that the air spring is inflated or deflated to achieve height adjustment.
  • the technical solution of the present invention improves the sensitivity of height adjustment.
  • the pneumatic valve of the technical solution of the present invention can collect and control the positional relationship by changing its working stroke. The structure is simple and easy to install. And maintenance, low cost.
  • Fig. 1 shows a flowchart of a method for adjusting the height of a suspension system according to an embodiment of the present invention
  • Figure 2 shows a schematic diagram of the positional relationship of the first connecting portion relative to the second connecting portion according to an embodiment of the present invention
  • Figure 3 shows a schematic diagram of the functional structure of a system for adjusting the height of a suspension system according to an embodiment of the present invention
  • Fig. 1 shows a flowchart of a method for adjusting the height of a suspension system according to an embodiment of the present invention.
  • a method for adjusting the height of a suspension system includes:
  • step S110 the pneumatic valve and the air spring are arranged between the first connecting part and the second connecting part, and the positions of the pneumatic valve and the air spring are adapted; and the gas output end of the pneumatic valve is connected to the gas input end of the air spring.
  • the pneumatic valve has a linear structure.
  • the pneumatic valve includes a driving rod and a valve body.
  • the driving rod makes a reciprocating linear motion in the valve body.
  • the driving rod is connected to the first connecting part, and the valve body is connected to the second connecting part.
  • the position adaptation of the pneumatic valve and the air spring includes that the longitudinal axis of the pneumatic valve is parallel or coincides with the longitudinal axis of the air spring, or the longitudinal axis of the pneumatic valve is not parallel or coincides with the longitudinal axis of the air spring.
  • the longitudinal axis of the pneumatic valve is parallel to or coincides with the longitudinal axis of the air spring. It should be noted that the position of the pneumatic valve and the air spring is not further limited in this embodiment.
  • the air spring can be located between the first connection part and the second connection part. It is sufficient to provide support between the second connections.
  • the gas output end of the pneumatic valve is connected with the gas input end of the air spring, so that the pneumatic valve and the air spring generate a gas flow connection, so that the pneumatic valve controls the air spring to inflate or deflate, and to achieve height adjustment.
  • the second connecting portion includes the chassis frame, that is, the pneumatic valve and the air spring are arranged between the cab and the chassis frame. If the first connecting portion includes the vehicle chassis, the second connecting portion includes wheels, that is, the pneumatic valve and the air spring are arranged between the vehicle chassis and the wheels. If the first connecting portion includes the upper frame of the seat, the second connecting portion includes the lower frame of the seat, that is, the pneumatic valve and the air spring are arranged between the upper frame of the seat and the lower frame of the seat.
  • the second connecting part includes the rotating pin of the seat scissors frame, that is, the pneumatic valve and the air spring are arranged on the sliding horizontal axis and the seat of the seat scissors frame. Between the pivot pins of the chair scissor frame.
  • step S120 the pneumatic valve collects at least one movement variable of the first connecting part relative to the second connecting part.
  • the motion variable includes the positional relationship of the first connecting portion with respect to the second connecting portion.
  • Step S130 at the same time, the pneumatic valve changes its working stroke according to the collected movement variables and/or changes in the movement variables, so that the air spring is connected with the air source to generate gas flow connection, and the air spring is inflated; or, the air spring is connected to the atmosphere. There is a gas flow connection between them to realize the air spring deflation and realize the height adjustment.
  • the change of the motion variable is determined by at least two temporally continuous motion variables of the first connecting part relative to the second connecting part.
  • the technical solution of this embodiment collects at least one movement variable of the first connecting portion relative to the second connecting portion through a pneumatic valve, and changes its working stroke according to the collected movement variable and/or the change of the movement variable, In this way, the air spring is inflated or deflated to achieve height adjustment.
  • the technical solution of this embodiment improves the sensitivity of height adjustment.
  • the pneumatic valve of the technical solution of this embodiment can collect and control the positional relationship by changing its own working stroke. The structure is simple and convenient. Installation and maintenance are low cost.
  • FIG. 2 shows a schematic diagram of the positional relationship between the first connecting portion and the second connecting portion according to an embodiment of the present invention.
  • the motion variable includes the positional relationship between the first connecting portion and the second connecting portion.
  • the positional relationship includes the vertical relationship of the first connecting portion with respect to the second connecting portion, or the horizontal relationship of the first connecting portion with respect to the second connecting portion, or the vertical relationship of the first connecting portion with respect to the second connecting portion Straight relationship and horizontal relationship; that is to say, not only the height can be adjusted according to the vertical relationship of the first connecting portion with respect to the second connecting portion, but also the height can be adjusted according to the horizontal relationship of the first connecting portion with respect to the second connecting portion.
  • the height can also be adjusted simultaneously according to the vertical relationship and the horizontal relationship between the first connecting portion and the second connecting portion.
  • the positional relationship between the first connecting portion and the second connecting portion is the adjusted target value, and the positional relationship between the first connecting portion and the second connecting portion is provided by the total working stroke of the pneumatic valve.
  • the positional relationship of the first connecting portion with respect to the second connecting portion corresponds to the total working stroke of the pneumatic valve according to a preset ratio.
  • the positional relationship of the first connecting portion with respect to the second connecting portion corresponds to the total working stroke of the pneumatic valve.
  • the ratio of working stroke is 1:1, 1:2 or 1:3, etc.
  • This embodiment does not further limit the ratio between the positional relationship of the first connecting portion relative to the second connecting portion and the total working stroke of the pneumatic valve.
  • the total working stroke is defined by the upper working stroke end S31 and the lower working stroke end S32;
  • the suspension upper limit position S21 of the pneumatic valve is in the range between the balance position S00 of the total working stroke and the upper working stroke end S31, the lower limit of the suspension of the pneumatic valve
  • the position S22 is in the range between the balance position S00 of the total working stroke and the lower working stroke end S32;
  • the balance range is a sub-range of the total working stroke range defined by the upper limit position S21 of the suspension and the lower limit position S22 of the suspension.
  • the balance range is determined by the balance The upper limit position S11 and the balance lower limit position S12 are defined.
  • the total working stroke range includes (-15mm, +15mm)
  • the total working stroke range defined by the suspension upper limit position S21 and the suspension lower limit position S22 includes (-10mm, +10mm)
  • balance The range includes (-5mm, +5mm).
  • adjusting the height according to the position relationship is mainly divided into the following three modes:
  • the pneumatic valve does not control the air spring inflating or discharging.
  • the height of the air spring is the preset basic height. In this case, you can drive on a flat road without adjusting the height of the air spring to maximize comfort.
  • the pneumatic valve controls the air according to the preset first gas flow rate.
  • the spring is deflated, because the flow of the first gas is small, so the height of the air spring is reduced slightly; or, the positional relationship between the first connecting part and the second connecting part is from the lower balance position S12 along the direction of the lower suspension position S22
  • the pneumatic valve controls the air spring to inflate according to the preset first gas flow rate. Because the first gas flow rate is small, the height of the air spring increases slightly; the second mode makes the first connecting part and The height between the second connecting parts is kept within the balance range to realize the suspension adjustment, so as to achieve the best comfort.
  • the pneumatic valve is controlled according to the preset second gas flow rate.
  • the air spring is deflated, wherein the second mass flow rate is greater than the first mass flow rate. Because the second gas flow rate is large, the air spring is quickly exhausted, so that the height of the air spring is quickly reduced; or, the positional relationship of the first connecting portion relative to the second connecting portion is along the lower working stroke from the suspension lower limit position S22 In the process of displacement in the direction of the end S32, the pneumatic valve controls the air spring to inflate according to the preset second gas flow rate.
  • the third mode realizes the rapid charging and discharging of the air spring, reduces the vibration amplitude, and reduces the discomfort caused by the severely bumpy road.
  • the method shown in FIG. 1 further includes: controlling the working stroke of the pneumatic valve to be shortened, extended, or kept unchanged by the adjusting device, so as to control the air spring to inflate, deflate, or neither inflate nor deflate.
  • the air can realize the gear and memory adjustment of the positional relationship of the first connecting part relative to the second connecting part.
  • the adjusting device may include the following three types.
  • the first type of adjusting device includes an adjusting handle and a cable.
  • the adjusting handle is connected to the pneumatic valve through the cable. Specifically, the adjusting handle changes the working stroke of the pneumatic valve by controlling the length of the cable.
  • the air spring is inflated or deflated to realize the gear adjustment of the height of the air spring, thereby realizing the gear adjustment of the positional relationship between the first connecting portion and the second connecting portion; at the same time, the length of the cable is fixed by the adjustment handle, so that The working stroke of the pneumatic valve remains unchanged, so that the air spring is neither inflated nor deflated, so as to realize the memory adjustment of the height of the air spring, thereby realizing the memory adjustment of the positional relationship between the first connecting portion and the second connecting portion; in addition, Once the length of the cable is fixed, as described above, the pneumatic valve is used to achieve suspension adjustment at a specific position to improve comfort.
  • the second type of adjustment device includes a motor drive device, which is connected to the pneumatic valve through a cable.
  • the motor drive device changes the working stroke of the pneumatic valve by controlling the length of the cable, thereby controlling the inflation or deflation of the air spring ,
  • the gear adjustment of the height of the air spring so as to realize the gear adjustment of the position relationship of the first connecting part relative to the second connecting part; at the same time, the length of the cable is fixed by the motor drive device, so that the working stroke of the pneumatic valve is kept constant.
  • the third type of adjustment device includes a motor drive device.
  • the motor drive device is directly connected to the pneumatic valve.
  • the motor drive device directly changes the working stroke of the pneumatic valve or fixes it at a specific position, and then controls the air spring to inflate, deflate or neither inflate nor inflate.
  • the suspension adjustment can be realized at a specific position through a pneumatic valve to improve comfort.
  • the working stroke of the pneumatic valve becomes shorter and controls the air spring to inflate; when the length of the cable becomes shorter, the working stroke of the pneumatic valve becomes longer and the air spring is controlled to deflate.
  • the length of the cable and the working stroke of the pneumatic valve are not further limited. The user can adjust the positional relationship between the first connecting portion and the second connecting portion through the adjusting device according to actual needs, so as to meet the needs of different users.
  • the equilibrium position between the first connecting portion and the second connecting portion changes with the change of the positional relationship of the first connecting portion with respect to the second connecting portion.
  • the pneumatic valve is used to make the first connecting portion or the second connecting portion change. The part realizes levitation at the equilibrium position of the first connecting part relative to the second connecting part.
  • the adjusting device adjusts the positional relationship between the first connecting portion and the second connecting portion to a specific position through the pneumatic valve
  • the working stroke of the pneumatic valve is shortened or extended while the pneumatic valve is continuously returned to position, thereby making the pneumatic valve
  • the balance position of the valve does not change relative to itself, but the balance position of the pneumatic valve changes continuously with respect to the first connection part or the second connection part, so that the balance position of the first connection part relative to the second connection part continuously changes
  • the balance position of the pneumatic valve is adapted to the balance position of the first connecting part relative to the second connecting part.
  • the suspension system is a seat suspension system
  • the first connecting part includes the upper frame of the seat
  • the second connecting part includes the lower frame of the seat.
  • Xiao Ming sits on the seat and adjusts the height of the seat to 100mm, under the action of the pneumatic valve, the suspension position range of the seat at this time is (-10mm, +10mm); Xiaohong sits on the seat and adjusts the height of the seat to 80mm. Under the action of the pneumatic valve, At this time, the suspension position range of the seat is still (-10mm, +10mm). It can be seen that the equilibrium position of the first connecting part relative to the second connecting part changes with the change of the positional relationship of the first connecting part relative to the second connecting part.
  • the pneumatic valve makes the first connecting part or the second connecting part in the first The balance position of one connecting part relative to the second connecting part realizes levitation.
  • the equilibrium position of the pneumatic valve is that the first connecting portion is relative to the second connecting portion The balance position of the department.
  • FIG. 3 shows a schematic diagram of the functional structure of a system for adjusting the height of a suspension system according to an embodiment of the present invention.
  • a system 100 for adjusting the height of a suspension system includes a first connecting portion 110, The second connecting portion 120, at least one pneumatic valve 130 and an air spring 140; the pneumatic valve 130 and the air spring 140 are arranged between the first connecting portion 110 and the second connecting portion 120, and the positions of the pneumatic valve 130 and the air spring 140 are adapted
  • the pneumatic valve in this embodiment is a linear structure, the pneumatic valve includes a drive rod and a valve body, the drive rod makes a reciprocating linear motion in the valve body, the drive rod is connected to the first connecting portion, and the valve body is connected to the second connecting portion .
  • the position adaptation of the pneumatic valve and the air spring includes that the longitudinal axis of the pneumatic valve is parallel or coincides with the longitudinal axis of the air spring, or the longitudinal axis of the pneumatic valve is not parallel or coincides with the longitudinal axis of the air spring.
  • the longitudinal axis of the pneumatic valve is parallel to or coincides with the longitudinal axis of the air spring. It should be noted that the position of the pneumatic valve and the air spring is not further limited in this embodiment. As long as the pneumatic valve can collect the movement variable between the first connection part and the second connection part, the air spring can be located between the first connection part and the second connection part. It is sufficient to provide support between the second connections.
  • the second connecting part includes the chassis frame, that is, the pneumatic valve and the air spring are arranged between the cab and the chassis frame. If the first connecting portion includes the vehicle chassis, the second connecting portion includes wheels, that is, the pneumatic valve and the air spring are arranged between the vehicle chassis and the wheels. If the first connecting portion includes the upper frame of the seat, the second connecting portion includes the lower frame of the seat, that is, the pneumatic valve and the air spring are arranged between the upper frame of the seat and the lower frame of the seat.
  • the second connecting part includes the rotating pin of the seat scissors frame, that is, the pneumatic valve and the air spring are arranged on the sliding horizontal axis and the seat of the seat scissors frame. Between the pivot pins of the chair scissor frame.
  • the gas output end of the pneumatic valve 130 is connected to the gas input end of the air spring 140; the gas output end of the pneumatic valve is connected to the gas input end of the air spring, so that the pneumatic valve and the air spring generate gas flow connection, thereby realizing the pneumatic valve to control the air spring Inflate or deflate to achieve height adjustment.
  • the pneumatic valve 130 is used to collect at least one movement variable of the first connection portion 110 relative to the second connection portion 120; for example, the movement variable includes the positional relationship of the first connection portion 110 relative to the second connection portion 120. At the same time, the pneumatic valve 130 changes its working stroke according to the collected motion variable and/or the change of the motion variable, wherein the change of the motion variable is continuous in time through at least two of the first connecting part 110 relative to the second connecting part 120 Motion variables are determined.
  • the working stroke of the pneumatic valve 130 changes, thereby causing the air spring 140 and the air source to generate
  • the gas flow connection realizes the inflation of the air spring 140, or causes the gas flow connection between the air spring 140 and the atmosphere to realize the deflation of the air spring 140 and realize the height adjustment.
  • the technical solution of this embodiment collects at least one movement variable of the first connecting portion relative to the second connecting portion through a pneumatic valve, and changes its working stroke according to the collected movement variable and/or the change of the movement variable, In this way, the air spring is inflated or deflated to achieve height adjustment.
  • the technical solution of this embodiment improves the sensitivity of height adjustment.
  • the pneumatic valve of the technical solution of this embodiment can collect and control the positional relationship by changing its own working stroke. The structure is simple and convenient. Installation and maintenance are low cost.
  • the motion variable includes the positional relationship of the first connecting portion 110 relative to the second connecting portion 120; the positional relationship includes a vertical relationship and/or a horizontal relationship; the first connecting portion 110 is relative to the second connecting portion.
  • the positional relationship of the portion 120 is the adjusted target value, and the positional relationship of the first connecting portion 110 relative to the second connecting portion 120 is provided by the total working stroke of the pneumatic valve.
  • the positional relationship of the first connecting portion 110 relative to the second connecting portion 120 corresponds to the total working stroke of the pneumatic valve 130 according to a preset ratio, for example, the positional relationship of the first connecting portion 110 relative to the second connecting portion 120
  • the ratio to the total working stroke of the pneumatic valve 130 is 1:1, 1:2, or 1:3, etc.
  • the ratio of the positional relationship of the first connecting portion 110 relative to the second connecting portion 120 to the total working stroke of the pneumatic valve 130 is not further limited.
  • the total working stroke is defined by the upper working stroke end S31 and the lower working stroke end S32.
  • the suspension upper limit position S21 of the pneumatic valve 130 is in the range between the balance position S00 of the total working stroke and the upper working stroke end S31, and the suspension lower limit position S22 of the pneumatic valve 130 is at the equilibrium position S00 of the total working stroke and the lower working stroke end S32.
  • the balance range is a sub-range of the total working stroke range defined by the suspension upper limit position S21 and the suspension lower limit position S22, and the balance range is defined by the balance upper limit position S11 and the balance lower limit position S12.
  • the total working stroke range includes (-15mm, +15mm)
  • the total working stroke range defined by the suspension upper limit position S21 and the suspension lower limit position S22 includes (-10mm, +10mm)
  • the balance range includes (-5mm, +5mm).
  • adjusting the height according to the position relationship is mainly divided into the following three modes:
  • the pneumatic valve 130 does not control
  • the air spring 140 is inflated or deflated, and the height of the air spring 140 is a preset basic height. In this case, you can drive on a flat road without adjusting the height of the air spring to maximize comfort.
  • the pneumatic valve 130 follows the preset first gas
  • the flow control air spring 140 is deflated. Since the flow of the first gas is small, the height of the air spring 140 is reduced slightly; or, when the positional relationship of the first connecting portion 110 with respect to the second connecting portion 120 moves from the balance lower limit position S12
  • the pneumatic valve 130 controls the air spring 140 to inflate according to the preset first gas flow rate. Since the first gas flow rate is small, the height of the air spring 140 increases slightly; The two modes keep the height between the first connecting part and the second connecting part within the balance range, and realize the suspension adjustment, so as to achieve the best comfort.
  • the pneumatic valve 130 follows the preset second The gas flow control air spring 140 deflates, wherein the second mass flow is greater than the first mass flow. Because the second gas flow rate is large, the air spring is quickly exhausted, so that the height of the air spring is quickly reduced; or, the positional relationship of the first connecting portion 110 relative to the second connecting portion 120 is along the lower limit position S22 from the suspension lower limit position S22.
  • the pneumatic valve 130 controls the air spring to inflate according to the preset second air flow rate.
  • the third mode realizes the rapid charging and discharging of the air spring, reduces the vibration amplitude, and reduces the discomfort caused by the severely bumpy road.
  • the system 100 for adjusting the height of the suspension system further includes an adjusting device 150, which is used to control the working stroke of the pneumatic valve 130 to shorten, extend or remain unchanged, thereby controlling the inflation of the air spring 140 , Deflate or neither inflate nor deflate, realize the gear and memory adjustment of the positional relationship of the first connecting portion 110 relative to the second connecting portion 120.
  • the adjusting device 150 may include the following three types.
  • the first type of adjusting device 150 includes an adjusting handle and a cable.
  • the adjusting handle is connected to the pneumatic valve 130 through a cable. Specifically, the adjusting handle changes the pneumatic valve 130 by controlling the length of the cable.
  • the working stroke of the air spring 140 is controlled to control the inflation or deflation of the air spring 140 to realize the gear adjustment of the height of the air spring 140, thereby realizing the gear adjustment of the positional relationship of the first connecting portion 110 with respect to the second connecting portion 120; at the same time, through the adjustment handle
  • the length of the cable is fixed so that the working stroke of the pneumatic valve 130 remains unchanged, so that the air spring 140 is neither inflated nor deflated, so that the memory adjustment of the height of the air spring 140 is realized, so that the first connecting portion 110 is relative to the first connecting portion 110.
  • the second type of adjusting device 150 includes a motor drive device, which is connected to the pneumatic valve 130 through a cable.
  • the motor drive device controls the length of the cable to change the working stroke of the pneumatic valve 130, thereby controlling the air spring 140 Inflate or deflate to realize the height adjustment of the air spring 140, so as to realize the position adjustment of the position relationship between the first connecting portion 110 and the second connecting portion 120; at the same time, the length of the cable is fixed by the motor drive device, so that The working stroke of the pneumatic valve 130 remains unchanged, so that the air spring 140 is neither inflated nor deflated, and memory adjustment of the height of the air spring 140 is realized, thereby realizing the positional relationship between the first connecting portion 110 and the second connecting portion 120.
  • the third type of adjusting device 150 includes a motor drive device.
  • the motor drive device is directly connected to the pneumatic valve 130.
  • the motor drive device directly changes the working stroke of the pneumatic valve 130 or fixes it at a specific position, thereby controlling the air spring 140 to inflate, deflate or both
  • the air spring 140 is not inflated or deflated, so that the height of the air spring 140 is raised, lowered, or fixed at a specific position to realize the gear and memory adjustment of the height of the air spring 140, thereby realizing the adjustment of the first connecting portion 110 relative to the second connecting portion 120
  • the gear and memory adjustment of the position relationship; in addition, the pneumatic valve 130 realizes the suspension adjustment at a specific position, which improves the comfort.
  • the working stroke of the pneumatic valve becomes shorter and controls the air spring to inflate
  • the working stroke of the pneumatic valve becomes longer and the air spring is controlled to deflate.
  • the length of the cable and the working stroke of the pneumatic valve are not further limited. The user can adjust the positional relationship between the first connecting portion and the second connecting portion through the adjusting device according to actual needs, so as to meet the needs of different users.
  • the balance position between the first connecting portion 110 and the second connecting portion 120 changes following the change of the positional relationship of the first connecting portion 110 with respect to the second connecting portion 120, and the pneumatic valve 130 is used to make the first connection
  • the part 110 or the second connecting part 120 is suspended at the equilibrium position of the first connecting part 110 relative to the second connecting part 120.
  • the adjusting device 150 adjusts the positional relationship between the first connecting portion 110 relative to the second connecting portion 120 to a specific position through the pneumatic valve 130, the working stroke of the pneumatic valve 130 is shortened or extended while the pneumatic valve 130 is constantly changing.
  • the balance position of the pneumatic valve 130 does not change relative to itself, but the balance position of the pneumatic valve 130 is constantly changing relative to the first connecting portion 110 or the second connecting portion 120, so that the first connecting portion 110 is relatively As the equilibrium position of the second connecting portion 120 changes continuously, the equilibrium position of the pneumatic valve 130 is adapted to the equilibrium position of the first connecting portion 110 relative to the second connecting portion 120.
  • the suspension system is a seat suspension system
  • the first connecting portion 110 includes the upper frame of the seat
  • the second connecting portion 120 includes the lower frame of the seat. Adjust to 100mm.
  • the suspension position range of the seat is (-10mm, +10mm); Xiaohong sits on the seat and adjusts the height of the seat to 80mm. Under the action of, the suspension position range of the seat is still (-10mm, +10mm) at this time. It can be seen that the equilibrium position of the first connecting portion 110 relative to the second connecting portion 120 changes following the change in the positional relationship of the first connecting portion 110 relative to the second connecting portion 120, and the pneumatic valve 130 makes the first connecting portion 110 or The second connecting portion 120 achieves levitation at the equilibrium position of the first connecting portion 110 relative to the second connecting portion 120.
  • the equilibrium position of the pneumatic valve is that the first connecting portion 110 is relative to The equilibrium position of the second connecting portion 120.
  • the system for adjusting the height of the suspension system can be applied to the field of seat suspension systems, vehicle chassis suspension systems, and cab suspension systems. This embodiment does not apply to the application fields of the system for adjusting the height of the suspension system. Further restrictions.
  • the technical solution of this embodiment collects at least one movement variable of the first connecting portion relative to the second connecting portion through a pneumatic valve, and changes its working stroke according to the collected movement variable and/or the change of the movement variable.
  • the air spring is inflated or deflated to achieve height adjustment.
  • the technical solution of this embodiment improves the sensitivity of height adjustment.
  • the pneumatic valve of the technical solution of this embodiment can collect and control the positional relationship by changing its own working stroke. The structure is simple and convenient. Installation and maintenance are low cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

La présente invention concerne un procédé et un système (100) permettant de régler la hauteur d'un système de suspension. Le système consiste : à agencer une vanne pneumatique (130) et un ressort pneumatique (140) entre une première partie de raccordement (110) et une seconde partie de raccordement (120), les positions de la vanne pneumatique (130) et du ressort pneumatique (140) pouvant être adaptées l'une par rapport à l'autre ; à raccorder l'extrémité de sortie de gaz de la vanne pneumatique (130) à l'extrémité d'entrée de gaz du ressort pneumatique (140) ; la vanne pneumatique (130) collectant au moins une variable de mouvement, par rapport à la seconde partie de raccordement (120), de la première partie de raccordement (110) ; et, pendant ce temps, à faire en sorte que la vanne pneumatique (130) change sa propre course de fonctionnement en fonction de la variable de mouvement collectée et/ou d'un changement de la variable de mouvement, de sorte à raccorder le ressort pneumatique (140) à une source de gaz générant un écoulement de gaz pour gonfler le ressort pneumatique (140) ou à raccorder le ressort pneumatique (140) à une atmosphère pour générer un écoulement de gaz entre eux pour dégonfler le ressort pneumatique (140) et pour régler la hauteur.
PCT/CN2020/122008 2019-10-18 2020-10-19 Procédé et système permettant de régler la hauteur d'un système de suspension WO2021073652A1 (fr)

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