WO2011080795A1 - Suspension device - Google Patents

Suspension device Download PDF

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Publication number
WO2011080795A1
WO2011080795A1 PCT/JP2009/007326 JP2009007326W WO2011080795A1 WO 2011080795 A1 WO2011080795 A1 WO 2011080795A1 JP 2009007326 W JP2009007326 W JP 2009007326W WO 2011080795 A1 WO2011080795 A1 WO 2011080795A1
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WO
WIPO (PCT)
Prior art keywords
oil chamber
suspension device
adjusting
cylinder
valve mechanism
Prior art date
Application number
PCT/JP2009/007326
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French (fr)
Japanese (ja)
Inventor
増田憲
Original Assignee
株式会社テイン
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Publication date
Application filed by 株式会社テイン filed Critical 株式会社テイン
Priority to PCT/JP2009/007326 priority Critical patent/WO2011080795A1/en
Publication of WO2011080795A1 publication Critical patent/WO2011080795A1/en

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    • 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/466—Throttling control, i.e. regulation of flow passage geometry
    • 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
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • 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
    • F16F9/54—Arrangements for attachment
    • 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
    • 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
    • B60G2204/416—Ball or spherical joints

Definitions

  • the present invention relates to a suspension device used in a vehicle.
  • the suspension device used in the vehicle can not ensure optimum shock absorption unless it is in the recovery state (stretched state).
  • an opening and closing mechanism for opening and closing the valve mechanism is disposed between the vehicle body mounting bracket and the wheel mounting bracket.
  • the operating condition of the opening and closing mechanism is to be changed, if the opening and closing mechanism is positioned between the vehicle mounting bracket and the wheel mounting bracket, the operating condition can not be changed unless the suspension device is removed from the vehicle. Work becomes difficult.
  • An object of the present invention is, in view of the above-mentioned conventional situation, to provide a suspension device capable of easily adjusting the operating conditions of the valve mechanism and rapidly recovering while securing the traveling performance of the vehicle.
  • the suspension device of the present invention defines a cylinder, and a first oil chamber and a second oil chamber inside the cylinder, the first oil chamber and the second oil chamber.
  • a piston having a first oil passage communicating with the oil chamber, a piston rod connected to the piston, a control rod passing through the inside of the piston rod, and one end of the control rod
  • a valve mechanism for adjusting a flow rate of a second oil passage communicating with the first oil chamber and the second oil chamber; at least one of the piston rod and the control rod;
  • a biasing mechanism for biasing in a direction to open the path, and a mounting bracket portion attached to the vehicle body, the biasing mechanism being disposed on the opposite side of the cylinder with the mounting bracket portion interposed therebetween.
  • the biasing mechanism is configured such that the biasing force biasing the at least one of the piston rod and the control rod during the extension process of the suspension device exceeds a compression load applied to the biasing mechanism.
  • the second oil passage is opened by a mechanism.
  • the biasing mechanism includes an elastic body and a spacer that defines the biasing force of the biasing mechanism together with the elastic body.
  • the operating space defining the opening amount of the valve mechanism is configured such that an adjusting member for adjusting the height of the operating space can be inserted from the opposite side to the cylinder with the mounting bracket portion interposed therebetween. .
  • an adjustment needle for adjusting the flow rate of the third oil passage communicating with the first oil chamber and the second oil chamber, and an adjustment rod for adjusting the position of the adjustment needle through the inside of the control rod
  • an adjusting operation unit for performing an operation of adjusting the position of the adjusting needle through the adjusting rod.
  • the adjustment operation part is disposed on the opposite side of the cylinder with the mounting bracket part interposed therebetween.
  • the system further comprises closing means for closing the third oil passage by a pressure difference between the first oil chamber and the second oil chamber during the compression step of the suspension device, and the adjustment needle comprises the suspension The flow rate of the third oil passage is adjusted during the elongation process of the device.
  • the opening and closing conditions of the valve mechanism can be easily adjusted, and rapid recovery can be achieved while securing the traveling performance of the vehicle.
  • FIGS. 1A and 1B are cross-sectional views showing an upper main part and a lower main part of a suspension device according to an embodiment of the present invention.
  • FIGS. 2A and 2B are cross-sectional views showing upper and lower essential parts of the suspension device when the valve mechanism 5 is opened.
  • FIG. 3 is a cross-sectional view showing the lower essential part of the suspension device when the adjustment needle 20 is opened.
  • the piston (piston valve) 1 shown in FIG. 1B is connected to a piston rod bottom 29 fastened to the lower end of the piston rod 4 and has a first oil chamber C1 and a second oil chamber C2 located across the piston 1 And The volumes of the first oil chamber C1 and the second oil chamber C2 are variable as the piston 1 slides on the inner peripheral surface of the cylinder 2.
  • the piston 1 is penetrated by the small diameter part 29a formed in the lower part of the piston rod bottom 29 in the through-hole 1a formed in the central axis.
  • a through hole 1b communicating with the first oil chamber C1 and the second oil chamber C2 is formed.
  • the through hole 1b is formed in parallel with the through hole 1a constituting the first oil passage P1.
  • Leaf valves 30, 31 for generating a damping force by restricting the flow rate of the oil passage P1 are disposed at the upper end and the lower end of the piston 1 across the through hole 1b.
  • a temperature compensating valve 17 is disposed between the piston 1 and the large diameter portion 29 b located at the top of the piston rod bottom 29.
  • the piston rod 4 protrudes upward from the cylinder 2 through a lock guide 3 that seals an internal fluid such as oil with the outside. As shown in FIG. 1A, the upper end of the piston rod 4 is fastened to the lower end of the piston rod top 15 which is coaxial with each other.
  • the piston rod top 15 is fitted to the inner peripheral surface of the outer cylinder 27 disposed outside the cylinder 2 at the lower end which is the large diameter portion.
  • the valve mechanism 5 shown in FIG. 1B is disposed on the lower end side (one end side) of the control rod 6. Specifically, the valve mechanism 5 is fastened at its upper end to the lower end of the control rod 6 passing through the inside of the piston rod 4, and the inside of the large diameter portion 29 b of the piston rod bottom 29 and the inside of the lower end of the piston rod 4 Are arranged across the
  • the valve mechanism 5 can be positioned by another member such as the piston rod bottom 29, for example.
  • valve mechanism 5 axially slides on the inner circumferential surface of the piston rod 4. As will be described in detail later, the valve mechanism 5 slightly moves downward when the downward biasing force of the biasing mechanism 18 shown in FIG. 1A exceeds the compression load applied to the biasing mechanism 18. Thus, the valve mechanism 5 passes through a radially extending through hole 29 d formed in the large diameter portion 29 b of the piston rod bottom 29 and an axially extending through hole 29 c formed in the small diameter portion 29 a.
  • the oil passage P2 is opened (see FIG. 2B) and closed (see FIG. 1B).
  • the control rod 6 is fastened at its upper end to the lower end of a rod top 7 which is coaxial with each other and has the same diameter and a cylindrical shape.
  • the rod top 7 penetrates the top cap 8.
  • the top cap 8 is fastened to the rod top 7.
  • the top cap 8 is also fastened to the top of the mount top 10.
  • the top nut 16 is fastened to the upper end of the piston rod top 15.
  • a biasing mechanism 18 is disposed between the top cap 8 and the top nut 16 located below the top cap 8.
  • the biasing mechanism 18 includes a plurality of spring washers 18a and a plurality of spacers 18b.
  • the spring washer 18 a biases the cylinder rod top 15 and hence the cylinder rod 4 downward by biasing the top nut 16 downward.
  • the spring washer 18a is The cylinder rod 4 is finely moved downward. As the cylinder rod 4 finely moves downward as described above, as shown in FIG. 2B, the second oil passage P2 closed by the valve mechanism 5 is opened.
  • the spacer 18 b is disposed between the top cap 8 and the top nut 16 together with the spring washer 18 a. Further, the spacer 18b is inserted so as to press the spring washer 18a, thereby defining the biasing force of the biasing mechanism 18 together with the spring washer 18a.
  • the opening / closing amount of the valve mechanism 5 by the biasing mechanism 18 is defined by the height of the operation space S between the top nut 16 and the mount top 10.
  • the working space S is located (exposed) on the opposite side of the mounting bracket portion 14 from the cylinder 2. Therefore, the height of the working space S, and hence the height of the working space S can be easily determined by removing the top cap 8 and the top nut 16 and inserting the top cap 8 and the top nut 16 into the working space S as an adjusting member for adjusting the height of the working space S.
  • the opening / closing amount of the second oil passage P2 can be adjusted.
  • top cap 8 After the top cap 8 is fastened to the mount top 10 by adjusting the opening and closing conditions of the valve mechanism 5 (that is, the biasing force of the spring washer 18a) and the opening and closing amount (that is, the height of the operation space S due to the annular shim 28).
  • the top cap 8 is fixed to the rod top 7 and the mount top 10 by a lock nut 9 screwed to the rod top 7.
  • the mount top 10 sandwiches the pillow ball 11 a of the bearing portion 11 with the lower portion of the mount bottom 12 and is fastened to the outer peripheral surface of the upper portion of the mount bottom 12 on the inner peripheral surface.
  • the pillow ball 11a of the bearing portion 11 is rotatably supported by the ball support portion 11b.
  • the ball support portion 11 b is sandwiched by the base portion 11 c and the ring nut 13 fastened to the lower end thereof.
  • the base portion 11 c is fixed to the mounting bracket portion 14 to the vehicle body by a screw 19.
  • the lower outer peripheral surface of the top nut 16 is formed in a tapered shape whose diameter decreases as it goes downward.
  • the upper inner peripheral surface of the mount bottom 12 is formed in a tapered shape in which the diameter increases toward the upper side.
  • the top nut 16 can slide (moves slightly) on the upper inner peripheral surface of the mount bottom 12 on the lower outer peripheral surface. Therefore, as described above, the piston rod top 15 and the piston rod 4 can be slightly moved downward by the height of the operation space S between the top nut 16 and the mount top 10.
  • the piston rod top 15 fastened to the top nut 16 is supported by the mounting bracket portion 14, the bearing portion 11 and the ring nut 13 integrally fixed to the mounting bracket portion 14, and the bearing portion 11 Fine movement of the mount bottom 12, the mount top 10 and the top cap 8 is possible in the vertical direction.
  • the adjustment needle 20 is slidably inserted from above into the valve mechanism 5 shown in FIG. 1B.
  • the adjusting needle 20 is in contact with the lower end of the adjusting rod 24 shown in FIGS. 1A and 1B.
  • the adjusting rod 24 projects above the top cap 8 through the inside of the control rod 6 and the rod top 7 located above it.
  • a needle stopper 21 into which the lower end portion of the adjustment needle 20 is inserted is press-fitted to the valve mechanism 5.
  • an iron ball 22 as a closing means is disposed below the needle stopper 21, as a closing means.
  • the iron ball 22 can move freely between the needle stopper 21 and the pin 23 provided in the valve mechanism 5. Further, the iron ball 22 moves upward by the pressure difference between the second oil chamber C2 and the first oil chamber C1 during the compression process of the suspension device, causing the pressure difference with the first oil chamber C1, and the needle stopper At the lower end of 21, the third oil passage P3 described later shown in FIG. 3 is closed.
  • an adjustment screw 25 is provided at the upper end of the adjustment rod 24.
  • the adjustment screw 25 is fastened to the upper inner peripheral surface of the rod top 7.
  • An adjustment knob 26 as an adjustment operation unit is disposed above the adjustment screw 25, and the adjustment rod 24 and hence the adjustment needle 20 can be vertically moved via the adjustment screw 25 by the adjustment knob 26.
  • the oil in the first oil chamber C1 is inserted into the through hole 29d of the large diameter portion 29b of the piston rod bottom 29, and the valve mechanism 5 of the through holes 29e extending in the central axis direction and accommodating the valve mechanism 5.
  • valve disposed at the lower end (one end) side of the control rod 6 by adjusting the flow rate of the second oil passage P2 communicating with the first oil chamber C1 and the second oil chamber C2.
  • the mechanism 5 is released by the biasing force of the biasing mechanism 18.
  • the biasing mechanism 18 is disposed on the opposite side of the mounting bracket portion 14 from the cylinder 2.
  • the valve mechanism 5 is opened to weaken the damping force, and the suspension device is rapidly It is possible to be in a recovery state (elongation state). This makes it possible to operate the vehicle (for example, acceleration, steering, braking, etc.) at an early stage even if the wheels are floating.
  • the biasing mechanism 18 is disposed on the opposite side to the cylinder 2 with the mounting bracket portion 14 interposed therebetween, only by removing the lock nut 9 and the top cap 8 without removing the suspension device itself from the vehicle,
  • the adjustment of the biasing force that is, the opening and closing conditions of the valve mechanism 5 can be adjusted, and the traveling performance can be enhanced by securing the arrangement space of the cylinder 2 and the like.
  • the opening and closing conditions of the valve mechanism 5 can be easily adjusted, and rapid recovery can be achieved while securing the traveling performance of the vehicle.
  • the biasing mechanism 18 includes a spring washer 18 a as an elastic body, and a spacer 18 b which defines the biasing force of the biasing mechanism 18 together with the spring washer 18 a. Therefore, the opening / closing timing of the valve mechanism 5 can be easily adjusted by the selection of the number, the type, and the like above the mounting bracket portion 14 by the spring washer 18a.
  • the spring washer 18a is used as an elastic body. Therefore, the biasing force can be effectively exerted even in a small space. Further, in the present embodiment, in the working space S for defining the opening amount of the valve mechanism 5, the annular shim (the adjusting member) 28 for adjusting the height of the working space S is interposed between the cylinder 2 and the mounting bracket portion 14. And can be inserted from the other side. Therefore, the opening amount of the valve mechanism 5 can be easily adjusted.
  • the suspension device includes the adjustment needle 20 that adjusts the flow rate of the third oil passage P3 by adjusting the position by the adjustment rod 24 passing through the inside of the control rod 6, and the adjustment rod 24. And an adjusting knob (adjusting operation unit) 26 for performing an operation of adjusting the position of the adjusting needle 20.
  • the damping force can be adjusted with a simple configuration.
  • the adjustment knob 26 is disposed on the opposite side of the mounting bracket portion 14 to the cylinder 2. Therefore, adjustment of damping force can be made easy by simple composition.
  • the suspension device is a closing means (iron ball 22) for closing the third oil passage P3 by the differential pressure between the first oil chamber C1 and the second oil chamber C2 during the compression step. Furthermore, the adjustment needle 20 adjusts the flow rate of the third oil passage P3 during the extension process of the suspension device. Thereby, it is possible to prevent the adjustment of the damping force using the third oil passage P3 at the time of the extension process from affecting at the time of the compression process.
  • valve mechanism 5 is biased by urging the control rod 6 and the valve mechanism 5 side upward. If the valve mechanism 5 can be opened by the biasing force of the biasing mechanism 18, the structure of the suspension device can be changed as appropriate.
  • the biasing mechanism 18 opens the valve mechanism 5 when the biasing force exceeds the compression load, but by providing a plurality of biasing mechanisms having different biasing forces in parallel, etc. It is also possible to adjust the opening of the valve mechanism 5 in multiple stages.

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

Abstract

Disclosed is a suspension device comprised of a cylinder; a piston which defines a first oil chamber and a second oil chamber within the cylinder, and which has a first oil path that is in communication with the first oil chamber and the second oil chamber; a piston rod coupled to the piston; a control rod which extends through the inside of the piston rod; a valve mechanism which is disposed at one end of the control rod, and which adjusts the flow rate in the second oil path that is in communication with the first oil chamber and the second oil chamber; a biasing mechanism which biases at least one of the piston rod and the control rod in a direction in which the valve mechanism opens the second oil path; and an attaching bracket portion which is to be attached to a vehicle body, wherein the biasing mechanism is disposed on the side opposite to the cylinder with respect to the attaching bracket portion.

Description

サスペンション装置Suspension device
　本発明は、車両に用いられるサスペンション装置に関する。 The present invention relates to a suspension device used in a vehicle.
　従来、車両に用いられるサスペンション装置は、例えば、車両の車輪が地面から浮いて再度接地する際に、回復状態（伸び状態）になくては最適な衝撃吸収を確保することができなくなる。 Conventionally, for example, when the wheel of the vehicle floats from the ground and comes into contact with the ground again, the suspension device used in the vehicle can not ensure optimum shock absorption unless it is in the recovery state (stretched state).
　また、サスペンション装置の回復が遅れると、車輪が地面から離れるタイミングが早くなると共に、その後、車輪が地面に接地するタイミングが遅くなる。そのため、走行性能が安定しなくなる。 In addition, when the recovery of the suspension device is delayed, the timing at which the wheel leaves the ground becomes earlier, and then the timing at which the wheel comes in contact with the ground is delayed. Therefore, the driving performance is not stable.
　そこで、急速に回復可能なサスペンション装置が知られている（例えば、特許文献１参照）。このようなサスペンション装置は、一定条件下でバルブ機構により油路を開放させて減衰力を弱め、これにより、急速な回復を可能としている。 Therefore, a suspension device that can be recovered rapidly is known (see, for example, Patent Document 1). Such a suspension device opens the oil passage by the valve mechanism under certain conditions to weaken the damping force, thereby enabling rapid recovery.
特表２００７－５３４９０１号公報Japanese Patent Application Publication No. 2007-534901
　ところで、上述のように急速に回復可能なサスペンション装置には、車体取付けブラケットと車輪取付けブラケットとの間において、バルブ機構を開閉させる開閉機構が配置されている。 By the way, in the suspension device which can be recovered rapidly as described above, an opening and closing mechanism for opening and closing the valve mechanism is disposed between the vehicle body mounting bracket and the wheel mounting bracket.
　そのため、上述の開閉機構を配置する場合、シリンダの長さを短くしなければならなくなる。しかし、シリンダの長さがストローク長以上の大きさとならない場合、サスペンション装置の作動範囲を犠牲にするか或いは設計自体が不可能となる。したがって、車両の走行性能に悪影響を与えてしまう。 Therefore, when arranging the above-mentioned opening and closing mechanism, it becomes necessary to shorten the length of the cylinder. However, if the length of the cylinder does not exceed the stroke length, the operating range of the suspension device is sacrificed or the design itself becomes impossible. Therefore, the running performance of the vehicle is adversely affected.
　更には、上記開閉機構の作動条件を変更しようとしても、開閉機構が車体取付けブラケットと車輪取付けブラケットとの間に位置する場合、サスペンション装置を車体から取外さなければ作動条件を変更できず、調整作業が困難になる。 Furthermore, even if the operating condition of the opening and closing mechanism is to be changed, if the opening and closing mechanism is positioned between the vehicle mounting bracket and the wheel mounting bracket, the operating condition can not be changed unless the suspension device is removed from the vehicle. Work becomes difficult.
　本発明の目的は、上記従来の実情に鑑み、容易にバルブ機構の作動条件を調整可能で且つ車両の走行性能を確保しながら、急速に回復することができるサスペンション装置を提供することである。 An object of the present invention is, in view of the above-mentioned conventional situation, to provide a suspension device capable of easily adjusting the operating conditions of the valve mechanism and rapidly recovering while securing the traveling performance of the vehicle.
　上記課題を解決するために、本発明のサスペンション装置は、シリンダと、このシリンダの内部で第１の油室と第２の油室とを区画し、この第１の油室及びこの第２の油室に連通する第１の油路が形成されたピストンと、このピストンに連結されたピストンロッドと、このピストンロッドの内部を通る制御ロッドと、この制御ロッドの一端側に配置され、上記第１の油室及び上記第２の油室に連通する第２の油路の流量を調整するバルブ機構と、上記ピストンロッド及び上記制御ロッドのうち少なくとも一方を、上記バルブ機構が上記第２の油路を開放する方向に付勢する付勢機構と、車体に取付けられる取付けブラケット部と、を備え、上記付勢機構は、上記取付けブラケット部を挟んで上記シリンダとは反対側に配置されている構成とする。 In order to solve the above problems, the suspension device of the present invention defines a cylinder, and a first oil chamber and a second oil chamber inside the cylinder, the first oil chamber and the second oil chamber. A piston having a first oil passage communicating with the oil chamber, a piston rod connected to the piston, a control rod passing through the inside of the piston rod, and one end of the control rod A valve mechanism for adjusting a flow rate of a second oil passage communicating with the first oil chamber and the second oil chamber; at least one of the piston rod and the control rod; A biasing mechanism for biasing in a direction to open the path, and a mounting bracket portion attached to the vehicle body, the biasing mechanism being disposed on the opposite side of the cylinder with the mounting bracket portion interposed therebetween. Configuration and That.
　好ましくは、上記付勢機構は、上記サスペンション装置の伸び工程時に上記ピストンロッド及び上記制御ロッドのうち少なくとも一方を付勢する付勢力が上記付勢機構に加わる圧縮荷重を上回ったときに、上記バルブ機構により上記第２の油路を開放させる構成とする。 Preferably, the biasing mechanism is configured such that the biasing force biasing the at least one of the piston rod and the control rod during the extension process of the suspension device exceeds a compression load applied to the biasing mechanism. The second oil passage is opened by a mechanism.
　好ましくは、上記付勢機構は、弾性体と、この弾性体と共に上記付勢機構の付勢力を規定するスペーサと、を含む構成とする。
　好ましくは、上記バルブ機構の開放量を規定する作動空間は、この作動空間の高さを調整する調整部材を、上記取付けブラケット部を挟んで上記シリンダとは反対側から挿入可能である構成とする。 Preferably, the biasing mechanism includes an elastic body and a spacer that defines the biasing force of the biasing mechanism together with the elastic body.
Preferably, the operating space defining the opening amount of the valve mechanism is configured such that an adjusting member for adjusting the height of the operating space can be inserted from the opposite side to the cylinder with the mounting bracket portion interposed therebetween. .
　好ましくは、上記第１の油室及び上記第２の油室に連通する第３の油路の流量を調整する調整ニードルと、上記制御ロッドの内部を通り上記調整ニードルの位置を調整する調整ロッドと、この調整ロッドを介して上記調整ニードルの位置を調整する操作が行われる調整操作部と、を更に備える構成とする。 Preferably, an adjustment needle for adjusting the flow rate of the third oil passage communicating with the first oil chamber and the second oil chamber, and an adjustment rod for adjusting the position of the adjustment needle through the inside of the control rod And an adjusting operation unit for performing an operation of adjusting the position of the adjusting needle through the adjusting rod.
　好ましくは、上記調整操作部は、上記取付けブラケット部を挟んで上記シリンダとは反対側に配置されている構成とする。
　好ましくは、上記サスペンション装置の圧縮工程時に上記第１の油室と上記第２の油室との差圧により上記第３の油路を閉鎖する閉鎖手段を更に備え、上記調整ニードルは、上記サスペンション装置の伸び工程時に上記第３の油路の流量を調整する構成とする。 Preferably, the adjustment operation part is disposed on the opposite side of the cylinder with the mounting bracket part interposed therebetween.
Preferably, the system further comprises closing means for closing the third oil passage by a pressure difference between the first oil chamber and the second oil chamber during the compression step of the suspension device, and the adjustment needle comprises the suspension The flow rate of the third oil passage is adjusted during the elongation process of the device.
　本発明のサスペンション装置によれば、容易にバルブ機構の開閉条件を調整可能で且つ車両の走行性能を確保しながら、急速に回復することができる。 According to the suspension device of the present invention, the opening and closing conditions of the valve mechanism can be easily adjusted, and rapid recovery can be achieved while securing the traveling performance of the vehicle.
本発明の一実施の形態に係るサスペンション装置の上部側要部を示す断面図である。It is a sectional view showing the upper important part of the suspension device concerning the 1 embodiment of the present invention. 本発明の一実施の形態に係るサスペンション装置の下部側要部を示す断面図である。It is sectional drawing which shows the lower part principal part of the suspension apparatus which concerns on one embodiment of this invention. 本発明の一実施の形態に係る、バルブ機構開放時のサスペンション装置の上部側要部を示す断面図である。It is a sectional view showing the upper important part of the suspension device at the time of valve mechanism opening based on one embodiment of the present invention. 本発明の一実施の形態に係る、バルブ機構開放時のサスペンション装置の下部側要部を示す断面図である。It is sectional drawing which shows the lower part principal part of the suspension apparatus at the time of valve | bulb mechanism opening based on one embodiment of this invention. 本発明の一実施の形態に係る、調整ニードル開放時のサスペンション装置の下部側要部を示す断面図である。It is sectional drawing which shows the lower part principal part of the suspension apparatus at the time of adjustment needle open | release based on one embodiment of this invention.
　以下、本発明の一実施の形態に係るサスペンション装置について、図面を参照しながら説明する。
　図１Ａ及び図１Ｂは、本発明の一実施の形態に係るサスペンション装置の上部側要部及び下部側要部を示す断面図である。 Hereinafter, a suspension device according to an embodiment of the present invention will be described with reference to the drawings.
FIGS. 1A and 1B are cross-sectional views showing an upper main part and a lower main part of a suspension device according to an embodiment of the present invention.
　図２Ａ及び図２Ｂは、バルブ機構５の開放時のサスペンション装置の上部側要部及び下部側要部を示す断面図である。
　図３は、調整ニードル２０の開放時のサスペンション装置の下部側要部を示す断面図である。 FIGS. 2A and 2B are cross-sectional views showing upper and lower essential parts of the suspension device when the valve mechanism 5 is opened.
FIG. 3 is a cross-sectional view showing the lower essential part of the suspension device when the adjustment needle 20 is opened.
　図１Ｂに示すピストン（ピストンバルブ）１は、ピストンロッド４の下端に締結されたピストンロッドボトム２９に連結され、ピストン１を挟んで位置する第１の油室Ｃ１と第２との油室Ｃ２とを区画する。これら第１の油室Ｃ１及び第２の油室Ｃ２の容積は、ピストン１がシリンダ２の内周面を摺動することで、可変になっている。 The piston (piston valve) 1 shown in FIG. 1B is connected to a piston rod bottom 29 fastened to the lower end of the piston rod 4 and has a first oil chamber C1 and a second oil chamber C2 located across the piston 1 And The volumes of the first oil chamber C1 and the second oil chamber C2 are variable as the piston 1 slides on the inner peripheral surface of the cylinder 2.
　ピストン１は、その中心軸に形成された貫通孔１ａにおいて、ピストンロッドボトム２９の下部に形成された小径部２９ａに貫通される。ピストン１の貫通孔１ａの周囲には、第１の油室Ｃ１及び第２の油室Ｃ２に連通する貫通孔１ｂが形成されている。この貫通孔１ｂは、第１の油路Ｐ１を構成する貫通孔１ａと平行に形成されている。 The piston 1 is penetrated by the small diameter part 29a formed in the lower part of the piston rod bottom 29 in the through-hole 1a formed in the central axis. Around the through hole 1a of the piston 1, a through hole 1b communicating with the first oil chamber C1 and the second oil chamber C2 is formed. The through hole 1b is formed in parallel with the through hole 1a constituting the first oil passage P1.
　ピストン１の貫通孔１ｂを挟んだ上端及び下端には、油路Ｐ１の流量を制限することで減衰力を発生させるリーフバルブ３０，３１が配置されている。
　ピストンロッドボトム２９の上部に位置する大径部２９ｂとピストン１との間には、温度補償バルブ１７が配置されている。 Leaf valves 30, 31 for generating a damping force by restricting the flow rate of the oil passage P1 are disposed at the upper end and the lower end of the piston 1 across the through hole 1b.
A temperature compensating valve 17 is disposed between the piston 1 and the large diameter portion 29 b located at the top of the piston rod bottom 29.
　ピストンロッド４は、油などの内部流体と外部とをシールするロックガイド３を貫通してシリンダ２から上方に突出する。図１Ａに示すように、ピストンロッド４の上端は、互いに同軸であるピストンロッドトップ１５の下端に締結されている。 The piston rod 4 protrudes upward from the cylinder 2 through a lock guide 3 that seals an internal fluid such as oil with the outside. As shown in FIG. 1A, the upper end of the piston rod 4 is fastened to the lower end of the piston rod top 15 which is coaxial with each other.
　ピストンロッドトップ１５は、大径部分である下端において、シリンダ２の外側に配置された外筒２７の内周面に嵌合している。
　図１Ｂに示すバルブ機構５は、制御ロッド６の下端側（一端側）に配置されている。具体的には、バルブ機構５は、その上端において、ピストンロッド４の内部を通る制御ロッド６の下端に締結され、ピストンロッドボトム２９の大径部２９ｂの内部とピストンロッド４の下端の内部とに亘って配置されている。なお、バルブ機構５は、例えばピストンロッドボトム２９などの他の部材により位置決め可能なため、必ずしも制御ロッド６に連結されていなくともよい。 The piston rod top 15 is fitted to the inner peripheral surface of the outer cylinder 27 disposed outside the cylinder 2 at the lower end which is the large diameter portion.
The valve mechanism 5 shown in FIG. 1B is disposed on the lower end side (one end side) of the control rod 6. Specifically, the valve mechanism 5 is fastened at its upper end to the lower end of the control rod 6 passing through the inside of the piston rod 4, and the inside of the large diameter portion 29 b of the piston rod bottom 29 and the inside of the lower end of the piston rod 4 Are arranged across the The valve mechanism 5 can be positioned by another member such as the piston rod bottom 29, for example.
　バルブ機構５は、ピストンロッド４の内周面を軸方向に摺動する。詳しくは後述するが、バルブ機構５は、図１Ａに示す付勢機構１８の下方への付勢力が付勢機構１８に加わる圧縮荷重を上回ったときに、下方に微動する。これにより、バルブ機構５は、ピストンロッドボトム２９の大径部２９ｂに形成された径方向に延びる貫通孔２９ｄと、小径部２９ａに形成された軸方向に延びる貫通孔２９ｃとを通る第２の油路Ｐ２を開放する位置（図２Ｂ参照）と閉鎖する位置（図１Ｂ参照）とをとる。 The valve mechanism 5 axially slides on the inner circumferential surface of the piston rod 4. As will be described in detail later, the valve mechanism 5 slightly moves downward when the downward biasing force of the biasing mechanism 18 shown in FIG. 1A exceeds the compression load applied to the biasing mechanism 18. Thus, the valve mechanism 5 passes through a radially extending through hole 29 d formed in the large diameter portion 29 b of the piston rod bottom 29 and an axially extending through hole 29 c formed in the small diameter portion 29 a. The oil passage P2 is opened (see FIG. 2B) and closed (see FIG. 1B).
　図１Ａに示すように、制御ロッド６は、その上端において、互いに同軸且つ同径で円筒形状を呈するロッドトップ７の下端に締結されている。
　ロッドトップ７は、トップキャップ８を貫通する。このトップキャップ８は、ロッドトップ７に締結されている。トップキャップ８は、マウントトップ１０の上部にも締結されている。一方、ピストンロッドトップ１５の上端には、トップナット１６が締結されている。 As shown in FIG. 1A, the control rod 6 is fastened at its upper end to the lower end of a rod top 7 which is coaxial with each other and has the same diameter and a cylindrical shape.
The rod top 7 penetrates the top cap 8. The top cap 8 is fastened to the rod top 7. The top cap 8 is also fastened to the top of the mount top 10. On the other hand, the top nut 16 is fastened to the upper end of the piston rod top 15.
　トップキャップ８と、その下方に位置するトップナット１６との間には、付勢機構１８が配置されている。この付勢機構１８は、複数のバネ座金１８ａと、複数のスペーサ１８ｂとを含む。 A biasing mechanism 18 is disposed between the top cap 8 and the top nut 16 located below the top cap 8. The biasing mechanism 18 includes a plurality of spring washers 18a and a plurality of spacers 18b.
　バネ座金１８ａは、トップナット１６を下方に付勢することで、シリンダロッドトップ１５、ひいてはシリンダロッド４を下方に付勢する。サスペンション装置が装着された車両の走行中にバネ座金１８ａが受ける圧縮荷重が付勢機構１８の付勢力を下回ったとき、例えば、車輪が浮く直前や浮いた状態のときに、バネ座金１８ａは、シリンダロッド４を下方に微動させる。このようにシリンダロッド４が下方に微動することにより、図２Ｂに示すように、バルブ機構５により閉鎖されていた第２の油路Ｐ２は開放する。 The spring washer 18 a biases the cylinder rod top 15 and hence the cylinder rod 4 downward by biasing the top nut 16 downward. When the compression load received by the spring washer 18a falls below the biasing force of the biasing mechanism 18 while the vehicle on which the suspension device is mounted is traveling, for example, immediately before or when the wheel floats, the spring washer 18a is The cylinder rod 4 is finely moved downward. As the cylinder rod 4 finely moves downward as described above, as shown in FIG. 2B, the second oil passage P2 closed by the valve mechanism 5 is opened.
　スペーサ１８ｂは、バネ座金１８ａと共にトップキャップ８とトップナット１６との間に配置されている。また、スペーサ１８ｂは、バネ座金１８ａを押圧するように挿入されることで、バネ座金１８ａと共に付勢機構１８の付勢力を規定する。なお、付勢機構１８によるバルブ機構５の開閉量は、トップナット１６とマウントトップ１０との間の作動空間Ｓの高さにより規定される。 The spacer 18 b is disposed between the top cap 8 and the top nut 16 together with the spring washer 18 a. Further, the spacer 18b is inserted so as to press the spring washer 18a, thereby defining the biasing force of the biasing mechanism 18 together with the spring washer 18a. The opening / closing amount of the valve mechanism 5 by the biasing mechanism 18 is defined by the height of the operation space S between the top nut 16 and the mount top 10.
　作動空間Ｓは、取付けブラケット部１４を挟んでシリンダ２とは反対側に位置する（露出している）。そのため、作動空間Ｓの高さを調整する調整部材としての環状シム２８をトップキャップ８及びトップナット１６を取外して作動空間Ｓに挿入するという容易な作業で、作動空間Ｓの高さ、ひいては第２の油路Ｐ２の開閉量を調整することができる。 The working space S is located (exposed) on the opposite side of the mounting bracket portion 14 from the cylinder 2. Therefore, the height of the working space S, and hence the height of the working space S can be easily determined by removing the top cap 8 and the top nut 16 and inserting the top cap 8 and the top nut 16 into the working space S as an adjusting member for adjusting the height of the working space S. The opening / closing amount of the second oil passage P2 can be adjusted.
　バルブ機構５の開閉条件（即ち、バネ座金１８ａの付勢力）及び開閉量（即ち、環状シム２８に起因する作動空間Ｓの高さ）を調整してトップキャップ８をマウントトップ１０に締結した後、ロッドトップ７に螺合するロックナット９により、トップキャップ８は、ロッドトップ７及びマウントトップ１０に対し固定される。 After the top cap 8 is fastened to the mount top 10 by adjusting the opening and closing conditions of the valve mechanism 5 (that is, the biasing force of the spring washer 18a) and the opening and closing amount (that is, the height of the operation space S due to the annular shim 28). The top cap 8 is fixed to the rod top 7 and the mount top 10 by a lock nut 9 screwed to the rod top 7.
　そのため、ロックナット９及びトップキャップ８を取外すだけで、バネ座金１８ａ及びスペーサ１８ｂの枚数・種類の調整を容易に行うことができる。
　マウントトップ１０は、マウントボトム１２の下部との間にベアリング部１１のピロボール１１ａを挟み込んで、内周面においてマウントボトム１２の上部の外周面に締結されている。 Therefore, only by removing the lock nut 9 and the top cap 8, the number and type of the spring washer 18a and the spacer 18b can be easily adjusted.
The mount top 10 sandwiches the pillow ball 11 a of the bearing portion 11 with the lower portion of the mount bottom 12 and is fastened to the outer peripheral surface of the upper portion of the mount bottom 12 on the inner peripheral surface.
　ベアリング部１１のピロボール１１ａは、ボール支持部１１ｂにより回転可能に支持される。このボール支持部１１ｂは、ベース部１１ｃとその下端に締結されたリングナット１３とによって挟み込まれている。なお、ベース部１１ｃは、車体への取付けブラケット部１４に対し、ネジ１９により固定されている。 The pillow ball 11a of the bearing portion 11 is rotatably supported by the ball support portion 11b. The ball support portion 11 b is sandwiched by the base portion 11 c and the ring nut 13 fastened to the lower end thereof. The base portion 11 c is fixed to the mounting bracket portion 14 to the vehicle body by a screw 19.
　トップナット１６の下部外周面は、下方にいくほど縮径するテーパ状に形成されている。一方、マウントボトム１２の上部内周面は、上方にいくほど拡径するテーパ状に形成されている。そして、トップナット１６は、その下部外周面において、マウントボトム１２の上部内周面上を摺動（微動）可能となっている。そのため、上述のように、トップナット１６とマウントトップ１０との間の作動空間Ｓの高さ分、ピストンロッドトップ１５及びピストンロッド４が下方に微動することが可能となっている。 The lower outer peripheral surface of the top nut 16 is formed in a tapered shape whose diameter decreases as it goes downward. On the other hand, the upper inner peripheral surface of the mount bottom 12 is formed in a tapered shape in which the diameter increases toward the upper side. The top nut 16 can slide (moves slightly) on the upper inner peripheral surface of the mount bottom 12 on the lower outer peripheral surface. Therefore, as described above, the piston rod top 15 and the piston rod 4 can be slightly moved downward by the height of the operation space S between the top nut 16 and the mount top 10.
　このように、トップナット１６に締結されたピストンロッドトップ１５は、取付けブラケット部１４と、この取付けブラケット部１４に一体に固定されたベアリング部１１及びリングナット１３と、ベアリング部１１により支持されたマウントボトム１２、マウントトップ１０及びトップキャップ８とに対し、上下に微動可能となっている。 Thus, the piston rod top 15 fastened to the top nut 16 is supported by the mounting bracket portion 14, the bearing portion 11 and the ring nut 13 integrally fixed to the mounting bracket portion 14, and the bearing portion 11 Fine movement of the mount bottom 12, the mount top 10 and the top cap 8 is possible in the vertical direction.
　図１Ｂに示すバルブ機構５内には、調整ニードル２０が摺動可能に上方から挿入されている。この調整ニードル２０は、図１Ａ及び図１Ｂに示す調整ロッド２４の下端に当接している。 The adjustment needle 20 is slidably inserted from above into the valve mechanism 5 shown in FIG. 1B. The adjusting needle 20 is in contact with the lower end of the adjusting rod 24 shown in FIGS. 1A and 1B.
　調整ロッド２４は、制御ロッド６及びその上部に位置するロッドトップ７の内部を通って、トップキャップ８の上方に突出する。
　図１Ｂに示すように、バルブ機構５には、調整ニードル２０の下端部分が挿入されるニードルストッパ２１が圧入されている。このニードルストッパ２１の下部には、閉鎖手段としての鉄球２２が配置されている。 The adjusting rod 24 projects above the top cap 8 through the inside of the control rod 6 and the rod top 7 located above it.
As shown in FIG. 1B, a needle stopper 21 into which the lower end portion of the adjustment needle 20 is inserted is press-fitted to the valve mechanism 5. Below the needle stopper 21, an iron ball 22 as a closing means is disposed.
　鉄球２２は、バルブ機構５内に設けられたピン２３上を、ニードルストッパ２１との間で自由に移動することができる。また、鉄球２２は、サスペンション装置の圧縮工程時には、第２の油室Ｃ２の圧力が上昇し、第１の油室Ｃ１との間に圧力差が生じることで、上方へ移動し、ニードルストッパ２１の下端において、図３に示す後述する第３の油路Ｐ３を閉鎖する。 The iron ball 22 can move freely between the needle stopper 21 and the pin 23 provided in the valve mechanism 5. Further, the iron ball 22 moves upward by the pressure difference between the second oil chamber C2 and the first oil chamber C1 during the compression process of the suspension device, causing the pressure difference with the first oil chamber C1, and the needle stopper At the lower end of 21, the third oil passage P3 described later shown in FIG. 3 is closed.
　図１Ａに示すように、調整ロッド２４の上端には、調整ネジ２５が設けられている。この調整ネジ２５は、ロッドトップ７の上端内周面に締結されている。調整ネジ２５の上部には、調整操作部としての調整ノブ２６が配置され、この調整ノブ２６によって、調整ネジ２５を介して調整ロッド２４、ひいては調整ニードル２０を上下動させることができる。 As shown in FIG. 1A, an adjustment screw 25 is provided at the upper end of the adjustment rod 24. The adjustment screw 25 is fastened to the upper inner peripheral surface of the rod top 7. An adjustment knob 26 as an adjustment operation unit is disposed above the adjustment screw 25, and the adjustment rod 24 and hence the adjustment needle 20 can be vertically moved via the adjustment screw 25 by the adjustment knob 26.
　図３に示すように、調整ニードル２０が上方に移動した状態では、第１の油室Ｃ１の油は、バルブ機構５が閉じていても、第３の油路Ｐ３を通って第２の油室Ｃ２へ流れることが可能となる。 As shown in FIG. 3, when the adjustment needle 20 is moved upward, the oil in the first oil chamber C1 passes through the third oil passage P3 and the second oil even if the valve mechanism 5 is closed. It becomes possible to flow to the room C2.
　具体的には、第１の油室Ｃ１の油は、ピストンロッドボトム２９の大径部２９ｂの貫通孔２９ｄと、中心軸方向に延びバルブ機構５を収容する貫通孔２９ｅのうちバルブ機構５との間隙と、バルブ機構５（バルブ機構５の径方向に延びる流路５ａ等）と、ピストンロッドボトム２９の小径部２９ａの貫通孔２９ｃとを通って第２の油室Ｃ２へ流れることが可能となる。 Specifically, the oil in the first oil chamber C1 is inserted into the through hole 29d of the large diameter portion 29b of the piston rod bottom 29, and the valve mechanism 5 of the through holes 29e extending in the central axis direction and accommodating the valve mechanism 5. Flow to the second oil chamber C2 through the gap between the valve mechanism 5 (the flow passage 5a extending in the radial direction of the valve mechanism 5 and the like) and the through hole 29c of the small diameter portion 29a of the piston rod bottom 29 It becomes.
　以上説明した本実施の形態では、第１の油室Ｃ１及び第２の油室Ｃ２に連通する第２の油路Ｐ２の流量を調整し制御ロッド６の下端（一端）側に配置されたバルブ機構５は、付勢機構１８の付勢力によって開放する。また、付勢機構１８は、取付けブラケット部１４を挟んでシリンダ２とは反対側に配置されている。 In the present embodiment described above, the valve disposed at the lower end (one end) side of the control rod 6 by adjusting the flow rate of the second oil passage P2 communicating with the first oil chamber C1 and the second oil chamber C2. The mechanism 5 is released by the biasing force of the biasing mechanism 18. Further, the biasing mechanism 18 is disposed on the opposite side of the mounting bracket portion 14 from the cylinder 2.
　そのため、付勢機構１８の付勢力が圧縮荷重を上回ったとき、例えば、車輪が浮く直前や浮いた状態のときに、バルブ機構５が開放して減衰力を弱めることで、サスペンション装置を急速に回復状態（伸び状態）にすることが可能となる。これにより、車輪が浮いても早期に車両の操作（例えば、加速、操舵、制動など）を行うことが可能となる。 Therefore, when the biasing force of the biasing mechanism 18 exceeds the compression load, for example, immediately before or when the wheel floats, the valve mechanism 5 is opened to weaken the damping force, and the suspension device is rapidly It is possible to be in a recovery state (elongation state). This makes it possible to operate the vehicle (for example, acceleration, steering, braking, etc.) at an early stage even if the wheels are floating.
　また、付勢機構１８が、取付けブラケット部１４を挟んでシリンダ２とは反対側に配置されているため、サスペンション装置自体を車両から取外さずにロックナット９及びトップキャップ８を取外すだけで、付勢力の調整、即ちバルブ機構５の開閉条件、を調整することができると共に、シリンダ２等の配置スペースを確保することで走行性能を高めることができる。 Further, since the biasing mechanism 18 is disposed on the opposite side to the cylinder 2 with the mounting bracket portion 14 interposed therebetween, only by removing the lock nut 9 and the top cap 8 without removing the suspension device itself from the vehicle, The adjustment of the biasing force, that is, the opening and closing conditions of the valve mechanism 5 can be adjusted, and the traveling performance can be enhanced by securing the arrangement space of the cylinder 2 and the like.
　よって、本実施の形態のサスペンション装置によれば、容易にバルブ機構５の開閉条件を調整可能で且つ車両の走行性能を確保しながら、急速に回復することができる。
　また、本実施の形態では、付勢機構１８は、弾性体としてのバネ座金１８ａと、バネ座金１８ａと共に付勢機構１８の付勢力を規定するスペーサ１８ｂと、を含む。そのため、バネ座金１８ａによってバルブ機構５の開閉タイミングを、取付けブラケット部１４の上方において、枚数、種類などの選択によって容易に調整することができる。 Therefore, according to the suspension device of the present embodiment, the opening and closing conditions of the valve mechanism 5 can be easily adjusted, and rapid recovery can be achieved while securing the traveling performance of the vehicle.
Further, in the present embodiment, the biasing mechanism 18 includes a spring washer 18 a as an elastic body, and a spacer 18 b which defines the biasing force of the biasing mechanism 18 together with the spring washer 18 a. Therefore, the opening / closing timing of the valve mechanism 5 can be easily adjusted by the selection of the number, the type, and the like above the mounting bracket portion 14 by the spring washer 18a.
　また、本実施の形態では、弾性体としてバネ座金１８ａを用いている。そのため、小さなスペースでも有効に付勢力を発揮させることができる。
　また、本実施の形態では、バルブ機構５の開放量を規定する作動空間Ｓは、この作動空間Ｓの高さを調整する環状シム（調整部材）２８を、取付けブラケット部１４を挟んでシリンダ２とは反対側から挿入可能である。そのため、バルブ機構５の開放量を容易に調整することができる。なお、作動空間Ｓは、その一部でも取付けブラケット部１４を挟んでシリンダ２とは反対側に露出可能であれば調整部材の挿入が可能となるため、作動空間Ｓの少なくとも一部が取付けブラケット部１４を挟んでシリンダ２とは反対側に露出可能となるようにすることが望ましい。 In the present embodiment, the spring washer 18a is used as an elastic body. Therefore, the biasing force can be effectively exerted even in a small space.
Further, in the present embodiment, in the working space S for defining the opening amount of the valve mechanism 5, the annular shim (the adjusting member) 28 for adjusting the height of the working space S is interposed between the cylinder 2 and the mounting bracket portion 14. And can be inserted from the other side. Therefore, the opening amount of the valve mechanism 5 can be easily adjusted. It should be noted that since it is possible to insert the adjustment member if the operation space S is exposed on the opposite side to the cylinder 2 across the mounting bracket portion 14 even at a part thereof, at least a portion of the operation space S is the mounting bracket It is desirable to be able to expose on the opposite side to the cylinder 2 across the portion 14.
　また、本実施の形態では、サスペンション装置は、制御ロッド６の内部を通る調整ロッド２４によって位置を調整されることで第３の油路Ｐ３の流量を調整する調整ニードル２０と、調整ロッド２４を介して調整ニードル２０の位置を調整する操作が行われる調整ノブ（調整操作部）２６と、を備える。 Furthermore, in the present embodiment, the suspension device includes the adjustment needle 20 that adjusts the flow rate of the third oil passage P3 by adjusting the position by the adjustment rod 24 passing through the inside of the control rod 6, and the adjustment rod 24. And an adjusting knob (adjusting operation unit) 26 for performing an operation of adjusting the position of the adjusting needle 20.
　そのため、簡素な構成で減衰力を調整することができる。
　また、本実施の形態では、調整ノブ２６が取付けブラケット部１４を挟んでシリンダ２とは反対側に配置されている。そのため、簡素な構成で減衰力の調整を容易にすることができる。 Therefore, the damping force can be adjusted with a simple configuration.
Further, in the present embodiment, the adjustment knob 26 is disposed on the opposite side of the mounting bracket portion 14 to the cylinder 2. Therefore, adjustment of damping force can be made easy by simple composition.
　また、本実施の形態では、サスペンション装置は、圧縮工程時に第１の油室Ｃ１と第２の油室Ｃ２との差圧により第３の油路Ｐ３を閉鎖する閉鎖手段（鉄球２２）を更に備え、調整ニードル２０は、サスペンション装置の伸び工程時に第３の油路Ｐ３の流量を調整する。これにより、伸び工程時における第３の油路Ｐ３を用いた減衰力の調整が、圧縮工程時に影響を与えるのを防ぐことができる。 Further, in the present embodiment, the suspension device is a closing means (iron ball 22) for closing the third oil passage P3 by the differential pressure between the first oil chamber C1 and the second oil chamber C2 during the compression step. Furthermore, the adjustment needle 20 adjusts the flow rate of the third oil passage P3 during the extension process of the suspension device. Thereby, it is possible to prevent the adjustment of the damping force using the third oil passage P3 at the time of the extension process from affecting at the time of the compression process.
　なお、本実施の形態では、付勢機構１８によってピストンロッド４側を下方に付勢する例について説明したが、例えば、制御ロッド６及びバルブ機構５側を上方に付勢することでバルブ機構５の開放を行ってもよく、付勢機構１８の付勢力によってバルブ機構５を開放させることができれば、サスペンション装置の構造は適宜変更可能である。 In the present embodiment, although an example in which the piston rod 4 side is biased downward by the biasing mechanism 18 has been described, for example, the valve mechanism 5 is biased by urging the control rod 6 and the valve mechanism 5 side upward. If the valve mechanism 5 can be opened by the biasing force of the biasing mechanism 18, the structure of the suspension device can be changed as appropriate.
　また、本実施の形態では、付勢機構１８にバネ座金１８ａを用いる例について説明したが、他の弾性体等を用いてもよい。
　また、本実施の形態では、付勢機構１８は、付勢力が圧縮荷重を上回ったときにバルブ機構５を開放させるが、互いに付勢力の異なる付勢機構を並列に複数個設けることなどで、バルブ機構５の開放を多段階に調整することも可能である。 Moreover, although the example which uses the spring washer 18a for the biasing mechanism 18 was demonstrated in this Embodiment, you may use another elastic body etc.
Moreover, in the present embodiment, the biasing mechanism 18 opens the valve mechanism 5 when the biasing force exceeds the compression load, but by providing a plurality of biasing mechanisms having different biasing forces in parallel, etc. It is also possible to adjust the opening of the valve mechanism 5 in multiple stages.
　　１　　　ピストン
　　　１ａ，１ｂ　　　貫通孔
　　２　　　シリンダ
　　３　　　ロックガイド
　　４　　　ピストンロッド
　　５　　　バルブ機構
　　　５ａ　　　流路
　　６　　　制御ロッド
　　７　　　ロッドトップ
　　８　　　トップキャップ
　　９　　　ロックナット
　１０　　　マウントトップ
　１１　　　ベアリング部
　　１１ａ　　　ピロボール
　　１１ｂ　　　ボール支持部
　　１１ｃ　　　ベース部
　１２　　　マウントボトム
　１３　　　リングナット
　１４　　　取付けブラケット
　１５　　　ピストンロッドトップ
　１６　　　トップナット
　１７　　　温度補償バルブ
　１８　　　付勢機構
　　１８ａ　　　バネ座金
　　１８ｂ　　　スペーサ
　１９　　　ネジ
　２０　　　調整ニードル
　２１　　　ニードルストッパ
　２２　　　鉄球
　２３　　　ピン
　２４　　　調整ロッド
　２５　　　調整ネジ
　２６　　　調整ノブ
　２７　　　外筒
　２８　　　環状シム
　２９　　　ピストンロッドボトム
　　２９ａ　　　小径部
　　２９ｂ　　　大径部
　　２９ｃ，２９ｄ，２９ｅ　　　貫通孔
　３０，３１　　　リーフバルブ
　Ｃ１　　　第１の油室
　Ｃ２　　　第２の油室
　Ｐ１　　　第１の油路
　Ｐ２　　　第２の油路
　Ｓ　　　作動空間 Reference Signs List 1 piston 1a, 1b through hole 2 cylinder 3 lock guide 4 piston rod 5 valve mechanism 5a flow path 6 control rod 7 rod top 8 top cap 9 lock nut 10 mount top 11 bearing portion 11a pillow ball 11b ball support portion 11c base portion 12 mount Bottom 13 Ring nut 14 Mounting bracket 15 Piston rod top 16 Top nut 17 Temperature compensation valve 18 Biasing mechanism 18a Spring washer 18b Spacer 19 Screw 20 Adjustment needle 21 Needle stopper 22 Iron ball 23 Pin 24 Adjustment rod 25 Adjustment screw 26 Adjustment knob 27 Outer cylinder 28 Annular shim 29 Piston rod bottom 29a Small diameter part 29b Large diameter part 29c, 2 9d, 29e through hole 30, 31 leaf valve C1 first oil chamber C2 second oil chamber P1 first oil passage P2 second oil passage S working space

Claims (7)

  1. 　シリンダと、
    　該シリンダの内部で第１の油室と第２の油室とを区画し、該第１の油室及び該第２の油室に連通する第１の油路が形成されたピストンと、
    　該ピストンに連結されたピストンロッドと、
    　該ピストンロッドの内部を通る制御ロッドと、
    　該制御ロッドの一端側に配置され、前記第１の油室及び前記第２の油室に連通する第２の油路の流量を調整するバルブ機構と、
    　前記ピストンロッド及び前記制御ロッドのうち少なくとも一方を、前記バルブ機構が前記第２の油路を開放する方向に付勢する付勢機構と、
    　車体に取付けられる取付けブラケット部と、
    　を備え、
    　前記付勢機構は、前記取付けブラケット部を挟んで前記シリンダとは反対側に配置されている、
    　ことを特徴とするサスペンション装置。     With the cylinder,
    A piston defining a first oil chamber and a second oil chamber inside the cylinder and having a first oil passage communicating with the first oil chamber and the second oil chamber;
    A piston rod connected to the piston;
    A control rod passing through the interior of the piston rod;
    A valve mechanism disposed on one end side of the control rod and adjusting a flow rate of a second oil passage communicating with the first oil chamber and the second oil chamber;
    An urging mechanism for urging at least one of the piston rod and the control rod in the direction in which the valve mechanism opens the second oil passage;
    A mounting bracket attached to the vehicle body;
    Equipped with
    The biasing mechanism is disposed on the opposite side of the cylinder with respect to the mounting bracket portion.
    Suspension device characterized by.
  2. 　前記付勢機構は、前記サスペンション装置の伸び工程時に前記ピストンロッド及び前記制御ロッドのうち少なくとも一方を付勢する付勢力が前記付勢機構に加わる圧縮荷重を上回ったときに、前記バルブ機構により前記第２の油路を開放させることを特徴とする請求項１記載のサスペンション装置。 The biasing mechanism is configured to move the valve mechanism by the valve mechanism when a biasing force that biases at least one of the piston rod and the control rod exceeds an compressive load applied to the biasing mechanism during an extension process of the suspension device. The suspension system according to claim 1, wherein the second oil passage is opened.
  3. 　前記付勢機構は、弾性体と、該弾性体と共に前記付勢機構の付勢力を規定するスペーサと、を含むことを特徴とする請求項１記載のサスペンション装置。 The suspension device according to claim 1, wherein the biasing mechanism includes an elastic body, and a spacer which defines the biasing force of the biasing mechanism together with the elastic body.
  4. 　前記バルブ機構の開放量を規定する作動空間は、該作動空間の高さを調整する調整部材を、前記取付けブラケット部を挟んで前記シリンダとは反対側から挿入可能であることを特徴とする請求項１記載のサスペンション装置。 The operating space for defining the opening amount of the valve mechanism is characterized in that an adjusting member for adjusting the height of the operating space can be inserted from the opposite side to the cylinder with the mounting bracket portion interposed therebetween. The suspension device according to Item 1.
  5. 　前記第１の油室及び前記第２の油室に連通する第３の油路の流量を調整する調整ニードルと、
    　前記制御ロッドの内部を通り前記調整ニードルの位置を調整する調整ロッドと、
    　該調整ロッドを介して前記調整ニードルの位置を調整する操作が行われる調整操作部と、
    　を更に備えることを特徴とする請求項１記載のサスペンション装置。     An adjustment needle for adjusting the flow rate of a third oil passage communicating with the first oil chamber and the second oil chamber;
    An adjusting rod for adjusting the position of the adjusting needle through the inside of the control rod;
    An adjustment operation unit that performs an operation of adjusting the position of the adjustment needle through the adjustment rod;
    The suspension device according to claim 1, further comprising:
  6. 　前記調整操作部は、前記取付けブラケット部を挟んで前記シリンダとは反対側に配置されていることを特徴とする請求項５記載のサスペンション装置。 The suspension device according to claim 5, wherein the adjustment operation portion is disposed on the opposite side of the cylinder with respect to the mounting bracket portion.
  7. 　前記サスペンション装置の圧縮工程時に前記第１の油室と前記第２の油室との差圧により前記第３の油路を閉鎖する閉鎖手段を更に備え、
    　前記調整ニードルは、前記サスペンション装置の伸び工程時に前記第３の油路の流量を調整する、
    　ことを特徴とする請求項５記載のサスペンション装置。     And a closing means for closing the third oil passage by a pressure difference between the first oil chamber and the second oil chamber during the compression process of the suspension device.
    The adjustment needle adjusts the flow rate of the third oil passage during the extension process of the suspension device.
    The suspension device according to claim 5, characterized in that:
PCT/JP2009/007326 2009-12-28 2009-12-28 Suspension device WO2011080795A1 (en)

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Publication number Priority date Publication date Assignee Title
EP3584464A1 (en) * 2018-06-19 2019-12-25 Ktm Ag Schock absorber

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Publication number Priority date Publication date Assignee Title
JPS6113040A (en) * 1984-06-27 1986-01-21 Kawasaki Heavy Ind Ltd Hydraulic shock absorber
JPH0454342U (en) * 1990-09-17 1992-05-11
JP2002161939A (en) * 2000-11-24 2002-06-07 Parts Creator Kk Shock absorber
JP2003172394A (en) * 2001-12-07 2003-06-20 Showa Corp Damping force adjusting device for hydraulic shock absorber
JP2005291491A (en) * 2004-03-31 2005-10-20 Bos Sarl Suspension device having hydraulic shock-absorbing device to effect selective shock absorbing control
JP2007534901A (en) * 2004-04-26 2007-11-29 アモルティッシャー ドネレー Shock absorber with quick recovery and hydraulic end stops and method of use

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6113040A (en) * 1984-06-27 1986-01-21 Kawasaki Heavy Ind Ltd Hydraulic shock absorber
JPH0454342U (en) * 1990-09-17 1992-05-11
JP2002161939A (en) * 2000-11-24 2002-06-07 Parts Creator Kk Shock absorber
JP2003172394A (en) * 2001-12-07 2003-06-20 Showa Corp Damping force adjusting device for hydraulic shock absorber
JP2005291491A (en) * 2004-03-31 2005-10-20 Bos Sarl Suspension device having hydraulic shock-absorbing device to effect selective shock absorbing control
JP2007534901A (en) * 2004-04-26 2007-11-29 アモルティッシャー ドネレー Shock absorber with quick recovery and hydraulic end stops and method of use

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3584464A1 (en) * 2018-06-19 2019-12-25 Ktm Ag Schock absorber
JP2019219057A (en) * 2018-06-19 2019-12-26 ケーティーエム アーゲーＫｔｍ Ａｇ Vibration damper
US11035432B2 (en) 2018-06-19 2021-06-15 Ktm Ag Vibration damper
JP7083320B2 (en) 2018-06-19 2022-06-10 ケーティーエム アーゲー Vibration damper

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