WO2009136509A1 - Dispositif de suspension ayant une fonction de réglage de hauteur de véhicule - Google Patents

Dispositif de suspension ayant une fonction de réglage de hauteur de véhicule Download PDF

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Publication number
WO2009136509A1
WO2009136509A1 PCT/JP2009/050912 JP2009050912W WO2009136509A1 WO 2009136509 A1 WO2009136509 A1 WO 2009136509A1 JP 2009050912 W JP2009050912 W JP 2009050912W WO 2009136509 A1 WO2009136509 A1 WO 2009136509A1
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WO
WIPO (PCT)
Prior art keywords
vehicle height
panel
suspension device
spring
vehicle
Prior art date
Application number
PCT/JP2009/050912
Other languages
English (en)
Japanese (ja)
Inventor
近藤卓宏
石末郁人
太田康洋
作田敦
井上博文
Original Assignee
カヤバ工業株式会社
トヨタ自動車株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by カヤバ工業株式会社, トヨタ自動車株式会社 filed Critical カヤバ工業株式会社
Publication of WO2009136509A1 publication Critical patent/WO2009136509A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/065—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the use of a combination of springs
    • 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
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring
    • 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
    • F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
    • 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
    • B60G2202/12—Wound spring
    • 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
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • 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
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • 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
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • 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
    • B60G2202/40—Type of actuator
    • B60G2202/44—Axial actuator, e.g. telescopic
    • 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
    • B60G2202/40—Type of actuator
    • B60G2202/44—Axial actuator, e.g. telescopic
    • B60G2202/441—Axial actuator, e.g. telescopic where axial movement is translated to rotation of the connected end part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B60G2204/4106—Elastokinematic mounts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/419—Gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/45—Stops limiting travel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/20—Spring action or springs
    • B60G2500/22—Spring constant
    • 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 present invention relates to an improvement of a suspension device with a vehicle height adjustment function.
  • the present invention was created in consideration of the above-described problems, and the purpose of the present invention is to provide a vehicle height adjustment function that can achieve both vehicle height adjustment response and ride comfort. It is to provide a suspension device with a load.
  • a suspension device with a vehicle height adjusting function in the problem solving means of the present invention includes a panel element functioning as a suspension panel interposed between a panel lower member and a sprung member in a vehicle.
  • an actuator that is interposed between the spring element and the sprung or unsprung member to adjust the vehicle height, and a fluid pressure damper arranged in parallel with the panel element.
  • a suspension device with a vehicle height adjusting function includes a panel element functioning as a suspension panel interposed between a panel lower member and a panel upper member in a vehicle, a middle part of the panel element, a spring upper member or a panel. Since it is configured with an actuator that is interposed between the lower member and adjusts the vehicle height, and a fluid pressure damper that is arranged in parallel with the spring element, the vehicle height can be adjusted with the actuator overnight.
  • the responsiveness of the vehicle height adjustment is improved, and when the external vibration is input, There is no hindrance to expansion and contraction of the fluid pressure damper. Therefore, according to the suspension device with a vehicle height adjusting function of the present invention, both the response of the vehicle tuning and the ride comfort can be achieved.
  • suspension device with a vehicle height adjustment function of the present invention can adjust the vehicle height with high responsiveness, and can also function as an active suspension.
  • FIG. 1 is a diagram conceptually showing a suspension device with a vehicle height adjusting function according to the present invention.
  • FIG. 2 is a longitudinal sectional view of a specific configuration example of a suspension device with a vehicle height adjustment function.
  • FIG. 3 is a longitudinal sectional view of another configuration example of a specific suspension device with a vehicle height adjusting function.
  • FIG. 4 is a longitudinal sectional view of another configuration example of a specific suspension device with a vehicle height adjustment function.
  • the suspension device 1 with a vehicle height adjusting function is interposed between a panel lower member W and a sprung member B.
  • the vehicle has an unsprung member W and a panel upper member.
  • a panel element S functioning as a suspension panel interposed between the member B and an actuator A which is interposed between the spring element S and the panel upper member B to adjust the vehicle height.
  • a fluid pressure damper D in parallel with the panel element S.
  • Actuyue Ikuya A has a motion conversion mechanism T that converts linear motion into rotational motion, and a motor M that is connected to a rotating member that exhibits rotational motion in the motion conversion mechanism T. It is prepared for.
  • the motion conversion mechanism T is composed of a rotating member that exhibits rotational motion and a linear member that exhibits linear motion as the rotating member rotates.
  • the motion converting mechanism T includes, for example, a screw shaft and a screw nut. It consists of a feed screw mechanism, rack and pinion, worm gear, and other mechanisms.
  • this actuary A is connected to the sprung member B by connecting the motor M to the sprung member B, and the linear motion member in the motion converting mechanism T is connected to the middle of the panel element S to connect the panel upper member B and the spring.
  • the motion M may be connected to the spring elements S
  • the linear motion member in the motion conversion mechanism T may be the panel upper member B.
  • the drive source is set to M, so in the case of adopting the rotating member in the motion conversion mechanism T, that is, the feed screw mechanism, either the screw shaft or the screw nut is used.
  • the rotational motion of the rotating side member is transmitted to the motor M.
  • the motor M is driven by applying electric energy, the linear motion side member is moved linearly, that is, It can function as an evening.
  • the motor M and the rotating member of the motion conversion mechanism T need only be connected so as to be able to transmit the rotational motion. Therefore, a speed reducer or a rotating motor is connected between the motor M and the rotating member. It is also possible to install a link or joint that can transmit
  • M it is only necessary to realize the above-mentioned functions, so various types can be used. For example, a direct current, an alternating current motor, an induction motor, a synchronous motor, etc. Can be used.
  • the fluid pressure damper D is well known, and a specific configuration is omitted.
  • the cylinder C and the cylinder C are slidably inserted into the cylinder C and two pressure chambers are separated from each other.
  • a rod R one end of which is connected to the piston, and at the time of expansion and contraction, the fluid moves back and forth between the pressure chambers and resists the flow of the fluid to generate a predetermined damping force.
  • a fluid pressure damper D capable of exhibiting a damper function can be adopted.
  • a variety of fluids can be used.
  • the fluid pressure damper D is interposed between the sprung member B and the lower panel member W.
  • the rod R is connected to the sprung member B and the cylinder C is connected to the unsprung member W.
  • the rod R may be connected to the panel lower member W and the cylinder C may be connected to the panel upper member B. Therefore, the fluid pressure damper D may be interposed between the panel upper member B and the unsprung member W in an upright or inverted manner.
  • the panel element S is interposed between the sprung member B and the panel lower member W.
  • the panel element S supports the panel upper member B from below and receives the weight of the spring upper member B. ing.
  • the panel element S is not limited to a coil panel generally used as a suspension spring, but may be any one that functions as a panel by elastically supporting the panel upper member B such as a gas panel or rubber.
  • this spring element S is connected to one end of the actuate I / A, and the panel element S is an upper spring a that is juxtaposed to both the actuate I / A and the fluid pressure damper D, and the fluid pressure damper D only. It is connected with the lower spring b that is arranged in parallel.
  • the suspension device 1 with the vehicle height adjusting function is configured as described above, the vehicle height is adjusted by the actuator overnight A, that is, the panel upper member B is moved in the vertical direction in FIG. For this, the length of the upper spring a in the spring element S may be changed by the thrust of Actuary A.
  • Actuate Ichiyu A only needs to generate a thrust commensurate with the elastic force in the direction of raising the panel upper member B in the upper panel a that is reduced by expansion and displacement.
  • the height is lowered, it is sufficient to generate a thrust corresponding to the repulsive force in the direction of raising the panel upper member B in the upper panel a which increases due to contraction displacement. There is no need to exert thrust to raise or lower the vehicle height against the total weight of the vehicle.
  • the actuator A inhibits the expansion and contraction of the fluid pressure damper D by the expansion and contraction of the lower spring b in the spring element S. There is no.
  • the actuator A when the vehicle height is adjusted, the actuator A is thrust that matches the repulsive force of the upper panel a that expands and contracts. Therefore, the vehicle height adjustment responsiveness is improved, and when the external vibration is input, Actu Yue A does not interfere with the expansion and contraction of the fluid pressure damper D, improving the ride comfort in the vehicle. can do. That is, the vehicle height adjustment function of the present invention According to the suspension device 1 with a vehicle, it is possible to achieve both responsiveness of ride height adjustment and ride comfort.
  • suspension device 1 with a vehicle height adjustment function of the present invention can perform vehicle tuning with high responsiveness, and thus can function as an active suspension.
  • the action overnight A is interposed between the middle of the panel element S and the sprung member B, but is interposed between the middle of the spring element S and the unsprung member W. And may be arranged in parallel with the lower spring b.
  • Akuyu Yue A needs only to generate a thrust corresponding to the elasticity of the lower panel b that expands or contracts by expanding and contracting.
  • Actu Yue A does not hinder the expansion and contraction of the fluid pressure damper D, so the vehicle height adjustment response and ride comfort are the same as those in parallel with the upper spring a. It is possible to achieve both.
  • the motion conversion mechanism is equipped with a mechanism such as a combination of a pole screw nut and a screw shaft, and the linear motion member can be forced to linearly move by an external force to change into a rotational motion of the rotating member.
  • the motor M is forcibly rotated by the external force, and an induced electromotive force can be generated to generate a torque that suppresses the rotational movement of the rotating member. It is possible to exhibit a damping function that suppresses linear motion of the linear motion member caused by. That is, in this case, the motor M functions to repress the linear motion of the linear motion member with the regenerative torque generated by regenerating the kinetic energy input from the outside and converting it to electric energy.
  • ACTYUEE YUTA A can function not only as an ACTURE YUEN but also as a shock absorber.
  • the suspension device 2 with a vehicle height adjusting function which is a specific configuration example, is basically arranged in series between a lower panel member and an upper spring member in a vehicle not shown in FIG.
  • the upper spring 3 and the lower spring 4 which are spring elements interposed between the upper panel 3 and the lower spring 4, and the spring receiver 5 interposed between the upper spring member and the upper spring member.
  • Actuyue Ichiyu A comprises a motion conversion mechanism T that converts linear motion into rotational motion and a motor M that is connected to a pole screw nut 6 that is a rotating member that exhibits rotational motion in the motion conversion mechanism T.
  • This motion conversion mechanism T includes a pole screw nut 6 that exhibits rotational motion, and a screw shaft 7 that is a linear motion member that exhibits a linear motion in the vertical direction in FIG. 2 as the pole screw nut 6 rotates. It is configured with.
  • this motion conversion mechanism T is a feed screw mechanism comprising a pole screw nut 6 and a screw shaft 7, the screw shaft 7 is forcibly driven in the vertical direction in FIG. 2 by an external force. As a result, the ball screw nut 6 exhibits a rotational motion.
  • this Akuyue Ichibu A is a pole screw with the torque generated by Moyu M.
  • the screw shaft 7 can be linearly moved in the vertical direction in FIG. 2 to adjust the vehicle height, and can function as an overnighter.
  • the mouth of Moyuyu M exhibits a rotational motion
  • Moyu M has a torque that suppresses the rotational motion of the low evening caused by the induced electromotive force. Generated and functions to suppress the linear motion of the screw shaft 7.
  • Actuya Ito A is a screw shaft that is a member on the linear motion side with a regenerative torque generated by regenerating the kinetic energy input externally and converting it to electric energy. It also functions as a shock absorber that suppresses vertical linear motion in Fig. 2.
  • this is a case where the thrust can be applied to the screw shaft 7 by actively generating a torque in the motor M, and when the screw shaft 7 is forced to move by an external force.
  • the regenerative torque generated by the motor M can suppress the linear motion of the screw shaft 7.
  • the screw shaft 7 as the linear motion member is formed in a hollow cylindrical shape, and a spiral screw groove (not shown) is formed on the outer periphery thereof, along the axis line, that is, A straight spline groove (not shown) is formed along the linear movement direction of the screw shaft 7.
  • the spline grooves may not be formed at the final ends on both sides of the screw shaft 7 in order to prevent the screw shaft 7 from falling off a ball spline nut 8 described later.
  • the number of grooves may be arbitrary.
  • the ball screw nut 6 as a rotating member is well known and not shown in detail, but a spiral passage facing the screw groove of the screw shaft 7 provided on the inner periphery of the cylindrical body, and a cylindrical shape A circulation path that is provided in the body and communicates with both ends of the passage, a plurality of poles that are accommodated in the passage and the circulation path and that run through the screw groove 7, and a spacer that is interposed between the poles.
  • Each pole is configured to be able to circulate through the loop-shaped passage and the circulation path.
  • the rotating member is a pole screw nut ⁇ 6 and the screw shaft 7 is driven to drive the pole screw nut.
  • the rotating member is not a pole screw nut, but a screw shaft. It is good also as a nut with a screw thread screwed into 7 screw grooves.
  • the screw shaft 7 is linearly moved by the rotational drive of the ball screw nut 6, a detent mechanism for the screw shaft 7 is required.
  • the screw shaft 7 is provided on the outer periphery of the screw shaft 7.
  • the spline groove and the ball spline nut 8 constitute the detent mechanism.
  • this pole spline nut 8 is well known and not shown in detail, a linear passage facing the spline groove provided on the outer periphery of the screw shaft 7 provided on the inner periphery of the cylindrical body, and the cylindrical shape A circulation path that is provided in the body and communicates with both ends of the passage, a plurality of poles that are accommodated in the passage and the circulation path and run through the spline groove, and a spacer that is interposed between the balls. Each pole can circulate through the loop-shaped passage and the circulation path.
  • a pole screw nut 6 is screwed onto the screw shaft 7 along the screw, and a pole spline nut 8 is inserted along the spline groove into the screw shaft 7.
  • the motion conversion mechanism T composed of the ball screw nut 6 and the screw shaft 7 is configured such that when the pole screw nut 6 exhibits a rotational motion, the screw shaft 7 is prevented from rotating by the pole spline nut 8, so that the screw shaft 7 shows a linear motion in the vertical direction in Fig. 2.
  • pole screw nut 6 is fixed to the inner peripheral side of a hollow rotor shaft 17 that is rotatably mounted on the Mo casing M 10, and the pole screw nut 8 is the lower end of the case 10. It is held non-rotatably on the inner periphery of a cylindrical holder 9 fixed to the open end.
  • the motor M has a cylindrical casing 10 and a casing.
  • 1 1 1 a which is an armature core fixed to the inner circumference of 1 0 and a coil 1 1 b wound around the core 1 1 a 1 1 and a casing 1 0 It is attached to the top open end of the case 1 and serves as a cap for 0.
  • Annular sensor holder 1 3 that holds 2 and pole bearing 1 4 fixed to the inner periphery of sensor holder 1 3 and casing 10 It is composed of 1 and 6 mouths that can be rotatably accommodated in 10. Note that the pole sp A holder 9 for holding the line nut 8 is fixed.
  • the rotor 16 has a cylindrical low shaft 17 that keeps the ball screw nut 6 non-rotatable on the inner periphery, and the core 11 a on the outer periphery of the intermediate portion of the mouth overnight shaft 17.
  • the upper end of the low shaft 17 is pivotally supported by the inner circumference of the above-mentioned pole bearing 14 and the lower end is within the ball bearing 15. It is pivotally supported by the circumference and is rotatably accommodated in the casing 10.
  • the magnet 18 is formed so that a plurality of magnets are bonded together so that the N pole and the S pole appear alternately along the circumference, but the N pole and the S pole are arranged around the circumference. Annular magnets having split magnetic pole patterns that appear alternately along may be used.
  • the mobile M is configured as a brushless mobile, but various other types can be used as the mobile M. Specifically, for example, DC, AC mode, induction mode, synchronous mode, etc. can be used.
  • the resolver mouth / outside 1 9 is installed, and these resolver stabilizers 1 2 and resolver port — evening 1 9 can detect the rotational position of low evening 16 and controls the energization of coil 1 1 b (not shown)
  • the control device can control the motor M based on the rotational position and rotational speed of the row 16.
  • means for detecting the position of the mouth / outlet 16 may be a magnetic sensor such as a Hall element, a rotary encoder, or the like.
  • the pole bearing 14 and the resolution bath 12 may be directly fixed to the casing 10 without the sensor holder 13, but the sensor holder 13 is used.
  • the ball bearing 14 and the resolver bath 13 b can be fixed in the casing 10 without special processing of the casing 10.
  • Holder assembly consisting of 9 Assembling is simplified by fixing, but the holder 9 may be omitted and the pole spline nut 8 may also be fixed to the casing 10.
  • the actuary A configured as described above is connected to the mount 21 via a vibration isolating rubber 20 attached to a flange 10 a provided on the outer periphery of the casing 10.
  • the mount 21 includes a mount cylinder 2 2, an annular upper plate 2 3 connected to a panel upper member (not shown) of the vehicle, and a lower plate coupled to the upper end of the mount cylinder 2 2.
  • Anti-vibration rubber 2 5 connected to the upper plate 2 3 and the lower plate 2 4, and the anti-vibration rubber attached to the inner periphery of the mounting cylinder 2 2 and attached to the flange 10 of the casing 10 a And a holding ring 26 that holds the outer periphery of 20.
  • the actuary Ichiyu A is connected to the sprung member of the vehicle via the mount 21.
  • the holding ring 26 is suspended from the inner periphery of the lower end in FIG. 2 of the holding ring main body 2 6 a and the holding ring main body 26 a having a U-shaped cross section for holding the vibration isolating rubber 20.
  • An upper spring receiver 27 that supports the upper end of the upper panel 3 in the panel element that functions as a suspension panel is attached to the socket portion 26 b.
  • the outer periphery of the lower end in FIG. 2 of the screw shaft 7 is provided with an annular spring support 5 that supports the lower end of the upper panel 3.
  • the upper panel 3 is interposed between the upper spring support 27 and the spring support 5. It is installed in parallel with Akuyu Yue A.
  • the fluid pressure damper D is a hydraulic damper, and although not shown in detail, the cylinder 30 filled with hydraulic fluid and the cylinder 30 are slidably inserted.
  • a piston (not shown) that separates two pressure chambers (not shown) in the cylinder 30, a rod 3 1 that has one end connected to the piston and protrudes from the cylinder 30, and a cylinder formed in the cylinder 30 It is configured with an air chamber or a reservoir (not shown) that compensates for the volume of the mouth that advances and retreats to 30, and exhibits a predetermined damping force during the expansion and contraction operation.
  • the fluid pressure damper D is filled with hydraulic oil, and the air volume for compensating the volume of the rod 3 1 with respect to the cylinder 30 and for compensating the oil temperature is required. If the fluid is a gas, there is no need to provide an air chamber.
  • the fluid pressure damper D is a so-called single cylinder type having an air chamber in the cylinder 30.
  • the suspension unit 2 with the vehicle height adjustment function can be shortened by shortening the overall length of the fluid pressure damper D by making the fluid pressure damper D a double cylinder type. There is an advantage that the length can be shortened.
  • the rod 31 in the fluid pressure damper D is inserted into the screw shaft 7 in the above-described actuator I and connected to the upper plate 23 of the mount 21 via the vibration isolating rubber 28. It is connected to the cap body 29.
  • a bracket 33 for mounting the vehicle is attached to the lower end of the cylinder 30, and the fluid pressure damper D can be connected to an unsprung member in the vehicle via the bracket 33.
  • the rod 31 is connected to the sprung member in the vehicle via the mount 21, and the cylinder 30 is connected to the panel lower member in the vehicle via the bracket 33. Thus, it is interposed between the sprung member and the lower panel member.
  • a lower spring receiver 34 that supports the lower end of the lower spring 4 in FIG. 2 is provided. Further, the lower spring 4 is supported by the above-described spring receiver 5 and is interposed between the lower spring receiver 34 and the spring receiver 5.
  • the upper panel 3 and the lower panel 4 described above are arranged in series with the spring receiver 5 interposed therebetween, and are interposed between the sprung member and the unsprung member via the mount 21 and the cylinder 30.
  • Actuary Ichiyu A is interposed between the middle of the spring element composed of the upper spring 3 and the lower spring 4 and the sprung member
  • the fluid pressure damper D is interposed between the panel upper member and the panel lower member in parallel with the panel element formed by the upper spring 3 and the lower spring 4.
  • the upper spring 3 and the lower spring 4 are coil springs, and are arranged coaxially with the actuator A and the fluid pressure damper D.
  • suspension device 2 with the vehicle height adjusting function of the present invention can also adjust the vehicle height with good responsiveness, so that it can also function as an active suspension.
  • the motion conversion mechanism T is equipped with a mechanism such as a combination of a ball screw nut and screw shaft, etc., and it is possible to change the rotational motion of the rotating member by forcibly moving the linear motion member linearly by an external force. Therefore, the motor M is forcibly rotated by the above external force to generate an induced electromotive force and generate a torque that suppresses the rotational movement of the rotating member. It can exhibit a damping function that suppresses the linear motion of moving parts.
  • Moyu M functions to repress the linear motion of the linear motion member with the regenerative torque generated by regenerating kinetic energy input from the outside and converting it to electric energy. It can function as a shock absorber as well as an overnight.
  • the function “actuate-even A not only act as a shock absorber but also a shock absorber. It is possible to dampen the vibration of the panel upper member not only in damper D but also in AC HYUKYUUE A.
  • dampen vibration only with fluid pressure damper D For vibrations in the frequency domain, the damping characteristics of the fluid pressure damper D can be made suitable for the running condition of the vehicle by superimposing the damping characteristics due to the variable thrust of the actuator A.
  • the moment of inertia is so large that it is difficult to expand and contract. It is possible to realize the damping characteristic to be.
  • the power can be used to provide a damping force, and by storing the power in a storage battery, etc., it can cover a part of the power when driving the motor M actively, thus saving power.
  • the screw shaft 7 is cylindrical, and the opening 31 of the fluid pressure damper D is inserted into the screw shaft 7 and connected to the sprung member.
  • the pressure damper D can be coaxially arranged, and the outer diameter of the suspension device 2 with vehicle height adjustment function, including the spring element as a suspension panel, can be made compact. Further, it is possible to avoid a situation in which an unnecessary moment is given to the panel upper member due to the thrust force applied to the sprung member by the spring element.
  • the screw shaft 7 and the pole screw nut 6 as the linear motion member are used as the rotating member, but on the contrary, the pole screw nut 6 is used as the linear motion member and the mouth of the motor M is connected to the screw shaft 7.
  • the rotating member may be connected to the rotating member.
  • the upper spring 3 and the lower spring 4 may be gas springs other than the coil spring, and in particular, like the suspension device 35 with a specific vehicle height adjustment function in another configuration example shown in FIG.
  • a diaphragm 36 is interposed between the elongated mounting cylinder 22 and the air piston 32 connected to the lower end of the screw shaft 7, and the air chamber G is partitioned on the outer periphery of the actuator A. If the upper spring is used as a gas panel, the vehicle height can be maintained by controlling the pressure in the air chamber G after adjusting the vehicle height in the case of Akuyu Yue A. In this case, the vehicle height can be maintained.
  • the air piston 3 2 has a cylindrical shape and is in sliding contact with the holder 9 that is the outer periphery of the actuator A. The space between the air piston 3 2 and the holder 9 is sealed to keep the air chamber G airtight. ing.
  • the motion conversion mechanism T is a screw nut that matches the trapezoidal screw and the trapezoidal screw, and one of the trapezoidal screw and the screw nut ⁇ ⁇ ⁇ is a linear motion member and the other is a rotary member, the linear motion of the linear motion member is rotated. Since it is not possible to convert it into a rotational motion of the member, it will no longer function as a shock absorber, but it will continuously output thrust after the vehicle height adjustment. The vehicle height can be maintained without power saving. Furthermore, when the upper end of the screw shaft 7 is non-rotatably connected to the panel upper member as in the suspension device 37 with a specific vehicle height adjustment function in another configuration example shown in FIG.
  • the ball spline nut 8 can be omitted.
  • the motor M itself moves up and down in FIG. 4 when adjusting the vehicle height. Therefore, the spring support 3 8 interposed between the upper panel 3 and the lower spring 4 is the casing 3 9 of the motor M.
  • the upper spring receiver 40 which is formed on the outer periphery of the upper spring 3 and supports the upper end of the upper spring 3, is connected to the screw shaft 7 and the upper end of the fluid pressure damper D 3 in FIG. Has been.
  • the specific suspension device with vehicle height adjustment function 37 of another configuration example the same members as those of the suspension device 2 with vehicle height adjustment function of the above configuration example are duplicated, and thus the description thereof is omitted. I will do it.
  • Actuyue Ichibu A is in the middle of the spring element composed of the upper spring 3 and the lower spring 4.
  • the fluid pressure damper D is interposed between the upper panel member and the lower panel member in parallel with the panel element composed of the upper panel 3 and the lower spring 4. .
  • suspension device 37 with a vehicle height adjusting function of the present invention can perform vehicle tuning with high responsiveness, it can also function as an active suspension.
  • the motion conversion mechanism T is equipped with a mechanism such as a combination of a ball screw nut and screw shaft, etc., and it is possible to change the rotational motion of the rotating member by forcibly moving the linear motion member linearly by an external force.
  • the function of Actuator Ayu can function not only as an actuator, but also as a shock absorber. Therefore, for vibrations in the low-frequency region, the damping characteristics of the fluid pressure damper D can be changed. Damping characteristics due to thrust
  • the effect of Actuya A which makes the moment of inertia large and difficult to expand and contract, appears.
  • the vibration can be damped only with the fluid pressure damper D, and the optimum damping characteristic for the vehicle can be realized.
  • the suspension device with a vehicle height adjusting function of the present invention can be used for a vehicle suspension.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention porte sur un dispositif de suspension (1), ayant une fonction de réglage de hauteur de véhicule, qui est pourvu d’un élément ressort (S) servant de ressort de suspension monté entre un élément non suspendu (W) et un élément suspendu (B) d'un véhicule, d’un actionneur (A) monté entre une position dans la partie médiane de l'élément ressort (S) et l'élément suspendu (B) ou l'élément non suspendu (W) et réglant la hauteur du véhicule, et d’un amortisseur à pression de fluide (D) monté en parallèle à l'élément ressort (S). Grâce au dispositif de suspension, le réglage de la hauteur du véhicule par l'actionneur (A) nécessite seulement que l'actionneur génère une force de poussée correspondant à une force de ressort de l'élément ressort (S), laquelle force de ressort augmente et diminue à mesure que l'élément de ressort est comprimé et allongé. La structure améliore la réponse de réglage de hauteur de véhicule, et l'actionneur (A) n’entrave pas l'allongement et la compression de l'amortisseur à pression de fluide (D) lorsqu'une vibration externe est mise en entrée dans le dispositif.
PCT/JP2009/050912 2008-05-09 2009-01-15 Dispositif de suspension ayant une fonction de réglage de hauteur de véhicule WO2009136509A1 (fr)

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JP2008-123454 2008-05-09
JP2008123454A JP2009269541A (ja) 2008-05-09 2008-05-09 車高調整機能付きサスペンション装置

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012040831A1 (fr) * 2010-09-28 2012-04-05 Georges Thomas Dispositif de suspension à réglage de hauteur pour véhicule
US20150165852A1 (en) * 2013-12-16 2015-06-18 GM Global Technology Operations LLC Method and apparatus for suspension damping including negative stiffness
RU2705604C1 (ru) * 2019-02-12 2019-11-11 Алексей Васильевич Гаврилов Пружинная подвеска с регулируемым дорожным просветом

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JP2018035811A (ja) * 2016-08-29 2018-03-08 日立オートモティブシステムズ株式会社 緩衝器

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JPH10203128A (ja) * 1997-01-21 1998-08-04 Kayaba Ind Co Ltd 車高調整装置
JP2001088527A (ja) * 1999-09-24 2001-04-03 Nissan Motor Co Ltd 車両の姿勢制御装置
JP2005188613A (ja) * 2003-12-25 2005-07-14 Nissan Motor Co Ltd 車両の車高調整装置
JP2006064101A (ja) * 2004-08-27 2006-03-09 Kayaba Ind Co Ltd 車高調整装置および緩衝器
JP2006143146A (ja) * 2004-11-24 2006-06-08 Toyota Motor Corp 車両用サスペンション装置

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WO2002008001A1 (fr) * 2000-07-26 2002-01-31 Continental Teves Ag & Co. Ohg Dispositif pour reguler les mouvements de la superstructure d'un vehicule
FR2840257B1 (fr) * 2002-05-31 2005-11-18 Renault Sa Systeme actif de suspension pour vehicule
DE10345987B4 (de) * 2003-10-02 2016-01-07 Volkswagen Ag Feder-Dämpfer-Anordnung mit Niveauverstellung
JP4942447B2 (ja) * 2006-10-11 2012-05-30 カヤバ工業株式会社 緩衝器

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Publication number Priority date Publication date Assignee Title
JPH10203128A (ja) * 1997-01-21 1998-08-04 Kayaba Ind Co Ltd 車高調整装置
JP2001088527A (ja) * 1999-09-24 2001-04-03 Nissan Motor Co Ltd 車両の姿勢制御装置
JP2005188613A (ja) * 2003-12-25 2005-07-14 Nissan Motor Co Ltd 車両の車高調整装置
JP2006064101A (ja) * 2004-08-27 2006-03-09 Kayaba Ind Co Ltd 車高調整装置および緩衝器
JP2006143146A (ja) * 2004-11-24 2006-06-08 Toyota Motor Corp 車両用サスペンション装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012040831A1 (fr) * 2010-09-28 2012-04-05 Georges Thomas Dispositif de suspension à réglage de hauteur pour véhicule
US20150165852A1 (en) * 2013-12-16 2015-06-18 GM Global Technology Operations LLC Method and apparatus for suspension damping including negative stiffness
US9370982B2 (en) * 2013-12-16 2016-06-21 GM Global Technology Operations LLC Method and apparatus for suspension damping including negative stiffness
RU2705604C1 (ru) * 2019-02-12 2019-11-11 Алексей Васильевич Гаврилов Пружинная подвеска с регулируемым дорожным просветом
US11338638B2 (en) * 2019-02-12 2022-05-24 Aleksei V. GAVRILOV Vehicle suspension having controllable ground clearance and rigidity

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