WO2019021994A1 - 減衰力調整式緩衝器 - Google Patents
減衰力調整式緩衝器 Download PDFInfo
- Publication number
- WO2019021994A1 WO2019021994A1 PCT/JP2018/027460 JP2018027460W WO2019021994A1 WO 2019021994 A1 WO2019021994 A1 WO 2019021994A1 JP 2018027460 W JP2018027460 W JP 2018027460W WO 2019021994 A1 WO2019021994 A1 WO 2019021994A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- damping force
- valve
- case
- shock absorber
- flat surface
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 43
- 238000013016 damping Methods 0.000 claims description 67
- 239000006096 absorbing agent Substances 0.000 claims description 32
- 230000035939 shock Effects 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 description 19
- 238000000465 moulding Methods 0.000 description 9
- 238000002788 crimping Methods 0.000 description 8
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
-
- 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
- F16F9/38—Covers for protection or appearance
-
- 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
- F16F9/461—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 characterised by actuation means
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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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
-
- 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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
-
- 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
-
- 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
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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
- F16F9/464—Control of valve bias or pre-stress, e.g. electromagnetically
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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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
- F16F2226/00—Manufacturing; Treatments
- F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
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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
- F16F2230/00—Purpose; Design features
- F16F2230/30—Sealing arrangements
Definitions
- the present invention is provided in a suspension device or the like of an automobile or a railway vehicle, and generates a damping force by controlling the flow of working fluid by damping force generating means with respect to the stroke of a piston rod.
- the present invention particularly relates to a damping force adjustable shock absorber equipped with a solenoid that controls damping force characteristics by damping force generation means.
- the above-described damping force adjustable shock absorber generally has a piston to which a piston rod is connected slidably fitted in a cylinder in which a working fluid is sealed, and the stroke of the piston rod is in the cylinder.
- the flow of fluid generated by the sliding of the piston is controlled by the damping force generating means to generate damping force.
- this damping force generation means a configuration is employed in which damping force characteristics are controlled by controlling the current supplied to the solenoid.
- the damping force generation means is configured to connect the solenoid case accommodating the solenoid and the valve case accommodating the valve mechanism by the nut member.
- a caulking groove having a rectangular cross section is formed along the circumferential direction on the outer peripheral wall of the valve case, and caulking of the sleeve-like extension connected to the solenoid case Both are fixed by caulking by applying a forming load with a caulking jig at the position of the outer peripheral wall corresponding to the groove.
- An object of the present invention is to provide a damping force adjustment shock absorber having a caulking portion capable of firmly caulking and fixing a solenoid case and a valve case while minimizing load on the solenoid block and the valve block by caulking and fixing. I assume.
- a damping force adjustment type shock absorber includes a damping force generating means and a cylindrical member in which a solenoid for driving the damping force generating means is accommodated, and is associated with the movement of the piston in the cylinder.
- a damping force adjustable shock absorber that controls a flow of a working fluid by means of the damping force generation means in the cylindrical member to generate a damping force,
- the cylindrical member is a first cylindrical body, a second cylindrical body disposed outside the first cylindrical body along the extending direction of the first cylindrical body, and the first cylindrical body.
- a caulking portion for caulking and fixing the second cylindrical body to the cylindrical body of The caulking portion includes a groove portion provided along the circumferential direction on the outer peripheral surface of the first cylindrical body, and an end portion of the second cylindrical body bent and stored in the groove portion, The groove portion has an inclined surface which is inclined inward of the cylindrical member from the second cylindrical body side toward the first cylindrical body side.
- the caulking portion provided in the damping force adjustable shock absorber can minimize the load on the solenoid block and the valve block by caulking and fixing.
- the solenoid case and the valve case can be firmly fixed by caulking so as to have a desired removal load.
- the caulking part which concerns on 3rd Embodiment is shown, (a) is an expanded sectional view before caulking fixation by the said caulking part, (b) is an expanded sectional view after caulking fixation.
- the caulking part which concerns on 4th Embodiment is shown, (a) is an expanded sectional view before caulking fixation by the said caulking part, (b) is an expanded sectional view after caulking fixation.
- the damping force adjustable shock absorber 1 according to the present embodiment is adopted as a railway vehicle vertical motion damper that is mounted vertically between a vehicle body and a bogie.
- the vertical movement damper for rail vehicles attached in a vertically placed state is shown as an example, you may use for a left-right movement damper and a yaw damper.
- the damping force adjustable shock absorber 1 according to the present embodiment may be adopted as a damper of a car.
- the damping force adjustable shock absorber 1 has a double cylinder structure in which an outer cylinder 3 is provided outside the cylinder 2 concentrically with the cylinder 2.
- a reservoir 4 is formed between the cylinder 2 and the outer cylinder 3.
- a piston 5 is slidably fitted in the cylinder 2.
- the inside of the cylinder 2 is defined by the piston 5 into two chambers of a cylinder upper chamber 2A and a cylinder lower chamber 2B.
- the lower end of the piston rod 6 is connected to the piston 5 by a nut 7.
- the upper end side of the piston rod 6 passes through the cylinder upper chamber 2A, and is inserted into the rod guide 8 and the oil seal 9 attached to the upper end portions of the cylinder 2 and the outer cylinder 3 to extend to the outside of the cylinder 2 .
- a base valve 10 is provided which divides the cylinder lower chamber 2 ⁇ / b> B and the reservoir 4.
- the piston 5 is provided with passages 11 and 12 for communicating the cylinder upper chamber 2A with the cylinder lower chamber 2B.
- the passage 12 is provided with a check valve 13 that allows only the flow of the working fluid from the cylinder lower chamber 2B side to the cylinder upper chamber 2A side.
- the passage 11 is provided with a disc valve 14 which opens when the pressure of the working fluid on the cylinder upper chamber 2A side reaches a predetermined pressure and relieves the pressure to the cylinder lower chamber 2B side.
- the base valve 10 is provided with passages 15 and 16 which allow the cylinder lower chamber 2B and the reservoir 4 to communicate with each other.
- the passage 15 is provided with a check valve 17 that allows only the flow of the working fluid from the reservoir 4 side to the cylinder lower chamber 2B side.
- the passage 16 is provided with a disk valve 18 which opens when the pressure of the working fluid on the cylinder lower chamber 2B side reaches a predetermined pressure and relieves the pressure to the reservoir 4 side.
- a working fluid oil is sealed in the cylinder 2 and oil and gas are sealed in the reservoir 4.
- a separator tube 20 is externally fitted to the cylinder 2 via seal members 19 disposed at upper and lower end portions, and an annular passage 21 is formed between the cylinder 2 and the separator tube 20.
- the annular passage 21 is in communication with the cylinder upper chamber 2A by a passage 22 provided on the side wall near the upper end of the cylinder 2.
- a cylindrical connection port 23 is formed at the lower part of the separator tube 20 so as to project radially outward and open. Further, an opening 24 having a diameter larger than that of the connection port 23 is provided on the outer peripheral wall of the outer cylinder 3 so as to be concentric with the connection port 23.
- a damping force generating means 25 is attached to the outer side of the lower outer peripheral wall of the outer cylinder 3 so as to surround the opening 24.
- the damping force generation means 25 will be described based on FIGS. 1 and 2, but in order to make the following description easy to understand, the side closer to the outer cylinder 3 is the other end side, and the side far from the outer cylinder 3 is It will be described as one end side.
- the damping force generating means 25 includes a valve block 35 provided with a pilot type main valve 32, a fail valve 33 operated at failure, and a solenoid drive for controlling the valve opening pressure of the main valve 32. And a solenoid block 37 for operating the pilot valve 36, which is a pressure control valve of As shown in FIG.
- the solenoid block 37 and the valve block 35 are coaxially disposed, and are disposed along a direction orthogonal to the axial direction of the outer cylinder 3.
- the valve block 35 and the solenoid block 37 are disposed in a cylindrical case 40.
- the case 40 is configured by caulking and fixing a valve case 41 housing the valve block 35 and a solenoid case 42 housing the solenoid block 37 by a caulking portion 45A according to the first embodiment.
- a solenoid block 37 is disposed radially outward from the outer cylinder 3 at one end, and a valve block 35 is disposed closer to the outer cylinder 3 at the other end.
- the case 40 corresponds to a cylindrical member.
- the valve block 35 is accommodated in a cylindrical valve case 41.
- the valve case 41 corresponds to a second cylinder.
- the valve case 41 includes a thick wall portion 48 and a thin wall portion 47 continuously provided from the thick wall portion 48 on one end side.
- the thick wall portion 48 and the thin wall portion 47 are connected by a tapered wall portion 49 whose diameter is reduced toward one end.
- the inner diameter of the thin wall portion 47 and the inner diameter of the thick wall portion 48 are substantially the same.
- a protruding portion 50 which protrudes obliquely outward is formed at one end portion of the thin wall portion 47.
- the thin wall portion 47 including the projecting portion 50 is a configuration of the caulking portion 45A according to the first embodiment described later.
- an inner flange 52 protruding inward is formed continuously from the thick wall portion 48.
- An opening 53 is formed inward of the inner flange 52.
- a plurality of notches 54 for communicating the inside of the reservoir 4 and a liquid chamber 72 (described later) in the valve case 41 are formed.
- the other end surface of the inner flange 52 is in contact with the outer peripheral surface of the outer cylinder 3, and the two 41 and 3 are fixed by welding or the like.
- the passage member 60 includes a cylindrical portion 61 having a communication passage 63 therein, and an annular flange portion 62 radially projecting from the outer periphery of one end of the cylindrical portion 61.
- the inner peripheral surface and the outer peripheral surface of the cylindrical portion 61 of the passage member 60 and the one end surface and the other end surface of the inner peripheral side of the flange portion 62 are covered with a seal member 66.
- connection port 23 and the main body 68 are communicated with each other by the communication passage 63 of the passage member 60, and the joint portion between the connection port 23 and the main body 68 is sealed by the seal member 66 of the passage member 60. .
- the valve block 35 includes a main valve 32, a main body 68 on which the main valve 32 is seated, a pilot pin 69, a pilot valve 36, a pilot body 70 on which the pilot valve 36 is seated, and a fail valve 33.
- a liquid chamber 72 is formed between the main body 68 and the pilot body 70 and the valve case 41.
- the main body 68 is formed with a support hole 74 axially penetrating at the radial center.
- the other end of the pilot pin 69 is supported by the support hole 74.
- a plurality of axially penetrating passages 75 are formed in the main body 68 around the support hole 74 at intervals along the circumferential direction.
- the support holes 74 of the main body 68 and the passages 75 communicate with the communication passage 63 in the cylindrical portion 61 of the passage member 60.
- the pilot pin 69 is formed in a cylindrical shape.
- the pilot pin 69 has an axially extending orifice passage 76 open at the other end, and a large diameter flow passage 77 axially extending at one end and communicating with the orifice passage 76.
- An annular projecting portion 81 is provided on the pilot pin 69 so as to protrude outward from an outer peripheral surface substantially in the axial direction. Since the other end side of the pilot pin 69 is supported by the support hole 74 of the main body 68, the support hole 74 communicates with the large diameter flow passage 77 and the orifice passage 76 of the pilot pin 69.
- a plurality of main disc valves 32A as the main valve 32 are supported between the annular projecting portion 81 of the pilot pin 69 and one end surface of the main body 68.
- a pilot body 70 is disposed.
- the pilot body 70 is formed in a substantially H-shaped cross section.
- One end opening of the pilot body 70 is closed by a holding plate 85 having a through hole 84 at the radial center.
- a valve chamber 86 is formed between the pilot body 70 and the holding plate 85.
- the operating rod 125 is inserted into the through hole 84.
- a plurality of communication paths 88 are formed along the circumferential direction on the inner peripheral surface of the through hole 84 of the holding plate 85.
- a spacer 90 is disposed in a range from between the holding plate 85 and the bottom of the solenoid case 42 of the solenoid block 37 to the outer periphery of one end of the pilot body 70.
- the spacer 90 includes a disc portion 92 having an insertion hole 91, and a cylindrical portion 93 extending from the outer peripheral edge of the disc portion 92 to the other end side.
- the cylindrical portion 93 is formed in a wave shape along the circumferential direction.
- a plurality of notches 94 are formed in the disk portion 92 in a range from the inner circumferential surface of the insertion hole 91 to one end of the cylindrical portion 93 radially.
- the pilot body 70 is opened at the radial center of one end surface thereof, and has a small diameter communicating hole 97 extending in the axial direction, and a large diameter support hole 98 opened at the radial center of the other end surface and communicating with the small diameter communicating hole 97 , Is formed.
- the inner diameter of the large diameter support hole 98 is larger than the outer diameter of the pilot pin 69.
- one end of the pilot pin 69 is supported by the large diameter support hole 98, and the small diameter communicating hole 97 of the pilot body 70 communicates with the large diameter flow passage 77 and the orifice passage 76 of the pilot pin 69.
- a communication passage 80 is formed between the large diameter support hole 98 and one end of the pilot pin 69.
- a plurality of passages 100 penetrating around the small diameter communicating hole 97 and the large diameter supporting hole 98 so as to communicate with the valve chamber 86 are formed at intervals along the circumferential direction.
- the back pressure chamber 105 is in a range surrounded by the main disc valve 32A disposed on one end side of the main body 68 and the slit disc 102 and the flexible disc 103 disposed on the other end side of the pilot body 70. It is formed.
- the back pressure chamber 105 is in communication with the small diameter communication hole 97 of the pilot body 70 through the slit of the slit disk 102 and the communication passage 80.
- the pilot valve 36 is detached from and seated on the seat portion around the small diameter communicating hole 97 of the pilot body 70.
- the pilot valve 36 includes a pilot valve member 108 and a plurality of thin plate-like spring members 109 that elastically support the pilot valve member 108.
- the pilot valve member 108 is seated on the pilot body 70 to open and close the small diameter communication hole 97 of the pilot body 70.
- the pilot valve member 108 is formed in a cylindrical shape with a bottom and has a through hole 111 provided at the other end, and a receiving hole 112 communicating with the through hole 111 and receiving the other end of the actuating rod 125. Have.
- the other end of the actuating rod 125 is accommodated in the accommodation hole 112 of the pilot valve member 108.
- a spring receiving portion 113 protruding in the radial direction is formed on the outer peripheral surface of the pilot valve member 108 near one end.
- a plurality of fail disc valves 33 A as fail valves 33 are supported between one end side of the spring receiving portion 113 and the holding plate 85.
- the solenoid block 37 is accommodated in a cylindrical solenoid case 42.
- the solenoid case 42 corresponds to a first cylinder.
- the solenoid block 37 is axially movably supported between a coil 121 wound around a bobbin 120 in a solenoid case 42, a pair of cores 122 and 123 inserted in the coil 121, and the cores 122 and 123. And a hollow actuating rod 125 connected to the plunger 124.
- These are fixed by an annular spacer 127 and a cup-shaped cover 128 attached to one end of the solenoid case 42 by caulking.
- the coil 121 wound around the bobbin 120 is protected by the mold resin portion 130.
- a lead wire (not shown) for energizing the coil 121 is extended from the cup-shaped cover 128 to the outside.
- the coil 121, the cores 122 and 123, the plunger 124 and the actuating rod 125 constitute a solenoid actuator. Then, by energizing the coil 121 through the lead wire, axial thrust is generated in the plunger 124 (operating rod 125) according to the current.
- the other end of the solenoid case 42 is disposed inside one end of the valve case 41, and the valve case 41 is crimped and fixed to the solenoid case 42 by a caulking portion 45A according to the first embodiment.
- the outer diameter of the solenoid case 42 substantially matches the inner diameter of the valve case 41.
- the solenoid case 42 and the valve case 41 are fluid-tightly connected by the seal member 131.
- caulking groove 45A according to the first embodiment and caulking solenoid case 42 according to the first embodiment are provided on the outer peripheral surface on the other end side of solenoid case 42 according to the first embodiment. And one end portion of the thin wall portion 47 of the valve case 41 which is folded and stored in the groove portion 150A.
- the crimp groove 150A is formed along the circumferential direction of the outer peripheral surface of the solenoid case 42.
- the caulking groove portion 150A continues from the outer peripheral surface of the solenoid case 42, and an inclined surface 152A which inclines inward of the case 40 from the valve case 41 side to the solenoid case 42 side (the other end side to one end side).
- a radially flat surface 153A which is provided on the side opposite to the valve case 41 side and which extends from the end of the inclined surface 152A continuously to the outer peripheral surface of the solenoid case 42 along the radial direction of the solenoid case 42.
- the inclination angle ⁇ of the inclined surface 152A with respect to the axial direction of the solenoid case 42 is set in the range of 30 ° to 50 °.
- the inclination angle ⁇ of the inclined surface 152A with respect to the axial direction of the solenoid case 42 is set to 38 °.
- the intersection of the inclined surface 152A and the radial flat surface 153A is located radially inward of the outer peripheral surface of the mold resin portion 130 that protects the coil 121. Further, when the other end of the solenoid case 42 is disposed in the valve case 41, one end of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41 and the radial flat surface 153A of the caulking groove 150A.
- the intersection point of the outer peripheral surface of the solenoid case 42 and the inclined surface 152 A is located on the other end side (seal member 131 side) of the starting point of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41.
- the passage member 60 is inserted into the valve case 41 from one end side, The flange portion 62 of the member 60 is brought into contact with the inner flange 52 of the valve case 41, and the cylindrical portion 61 of the passage member 60 is inserted from the inner flange 52 of the valve case 41 into the inward opening 53. Thereafter, the valve block 35 and the solenoid block 37 are combined and integrated, and these are inserted into the valve case 41 so that the other end surface of the main body 68 of the valve block 35 abuts on the flange portion 62 of the passage member 60. The other end of the solenoid case 42 is in contact with the inside of one end of the valve case 41.
- an axial distance is provided between one end of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41 and the radial flat surface 153A of the caulking groove 150A.
- the intersection of the outer peripheral surface of the solenoid case 42 and the inclined surface 152A of the caulking groove 150A according to the first embodiment is the other end side of the starting point of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41. Will be located in Thereafter, the case 40 is moved by one end of the thin-walled portion 47 of the valve case 41 by a caulking jig (not shown) that moves radially outward of the solenoid case 42 axially from one end to the other.
- the operation of the damping force adjustable shock absorber 1 will be described.
- the check valve 13 of the piston 5 is closed by the movement of the piston 5 in the cylinder 2, and before the disc valve 14 is opened, the oil on the cylinder upper chamber 2A side is pressurized
- the oil passes through the passage 22 and the annular passage 21 and flows into the communication passage 63 of the passage member 60 of the damping force generating means 25 from the connection port 23 of the separator tube 20. Thereafter, the oil passes the damping force generating means 25 to generate damping force and return to the reservoir 4.
- the movement of the piston 5 in the cylinder 2 causes the oil in the passage 12 of the piston 5 to open the check valve 13 and the check valve 17 of the base valve 10 to close.
- the oil in the cylinder lower chamber 2B flows into the cylinder upper chamber 2A through the passage 12, and the oil in a portion where the piston rod 6 intrudes into the cylinder 2 is the cylinder upper chamber 2A.
- the fluid flows from the connection port 23 of the separator tube 20 to the communication passage 63 of the passage member 60 of the damping force generating means 25 through the passage 22 and the annular passage 21. Thereafter, the oil passes the damping force generating means 25 to generate damping force and return to the reservoir 4.
- the pilot valve member 108 is advanced by the actuating rod 125 against the biasing force of the spring member 109, and its tip end is The seat portion is seated around the small diameter communication hole 97.
- the valve opening pressure of the pilot valve 36 can be controlled by the current supplied to the coil 121, and the pressure control by the pilot valve 36 can be performed.
- the damping force generation means 25 when the oil flows into the support holes 74 of the main body 68 and the respective passages 75 via the communication passage 63 of the passage member 60 during the extension stroke and the compression stroke of the piston rod 6, the main Before opening the main disk valve 32A of the valve 32 (piston velocity low speed region), the oil passes from the orifice passage 76 of the pilot pin 69 and the large diameter flow passage 77 via the small diameter communicating hole 97 of the pilot body 70. Then, the pilot valve member 108 of the pilot valve 36 is pushed open and flows into the valve chamber 86.
- the oil in the valve chamber 86 is cut from the communication passages 88 of the holding plate 85 to the notches 94 of the spacer 90, the liquid chamber 72 in the valve case 41, and the notches 54 provided on the inner flange 52 of the valve case 41. It flows to the reservoir 4 via. Therefore, when the piston speed increases and the pressure on the cylinder upper chamber 2A side of the cylinder 2 reaches the valve opening pressure of the main disc valve 32A, the oil that has passed through the communication passage 63 of the passage member 60 The main disk valves 32A are pushed open through the passages 75 and flow directly to the fluid chamber 72 in the valve case 41.
- the damping force generation means 25 the orifice passage 76 of the pilot pin 69 and the pilot valve member of the pilot valve 36 before the valve opening of each main disc valve 32A of the main valve 32 (piston speed low speed region)
- the valve opening pressure 108 generates a damping force.
- a damping force is generated according to the opening degree of each main disk valve 32A. Then, by adjusting the valve opening pressure of the pilot valve 36 by the current supplied to the coil 121, the damping force can be directly controlled regardless of the piston speed.
- the valve opening pressure of the pilot valve 36 the oil flows into the back pressure chamber 105 through the small diameter communication hole 97 of the pilot body 70, the communication passage 80, and the slit of the slitted disk 102.
- Internal pressure changes. Since the internal pressure of the back pressure chamber 105 acts in the valve closing direction of each main disc valve 32A, the valve opening pressure of each main disc valve 32A can be simultaneously adjusted by controlling the valve opening pressure of the pilot valve 36. Thus, the adjustment range of the damping force characteristic can be broadened.
- the pilot valve member 108 is retracted by the biasing force of the spring member 109.
- One end face of the spring receiving portion 113 is in contact with each fail disc valve 33 A of the fail valve 33. Then, in the state of the pilot valve member 108, the oil in the valve chamber 86 pushes the fail valves 33 (the fail disc valves 33A) and opens them, and the communication passages 88 of the holding plate 85 and the notches 94 of the spacer 90.
- the flow of oil from the valve chamber 86 to the fluid chamber 72 in the valve case 41 is controlled by the fail valve 33 (each fail disc valve 33A), so that the fail valve 33 (each fail disc)
- the fail valve 33 By setting the valve opening pressure of the valve 33A), it is possible to generate a desired damping force and adjust the internal pressure of the back pressure chamber 105, that is, the valve opening pressure of each main disc valve 32A of the main valve 32.
- an appropriate damping force can be obtained even at the time of failure.
- the valve case 41 and the solenoid case 42 are crimped and fixed by the caulking portion 45A according to the first embodiment.
- the caulking groove portion 150A according to the first embodiment is continuous from the outer peripheral surface of the solenoid case 42, and the inside of the case 40 is directed from the valve case 41 side to the solenoid case 42 side (from the other end side to one end side). It has the inclined surface 152A which inclines to the direction.
- the thin wall portion 47 of the valve case 41 is reliably absorbed at a predetermined angle (equivalent to the inclination angle .alpha. Can be folded with).
- the molding load along the axial direction of the case 40 can be dispersed during molding with the caulking jig, and the load on the valve block 35 and the solenoid block 37 can be suppressed.
- the molding load along the axial direction of the case 40 by the caulking jig is dispersed in the direction orthogonal to the inclined surface 152A of the caulking groove 150A and in the direction along the inclined surface 152A.
- the caulking portion 45B according to the second embodiment is different from the caulking portion 45A according to the first embodiment in the shape of a caulking groove portion 150B provided on the outer peripheral surface on the other end side of the solenoid case 42.
- the caulking groove portion 150B continues from the outer peripheral surface of the solenoid case 42, and an inclined surface 152B which inclines inward of the case 40 from the valve case 41 side to the solenoid case 42 side;
- An axially flat surface 154B extending from the end of the inclined surface 152B to the opposite side to the valve case 41 and extending along the axial direction of the case 40 and an edge from the end of the axially flat surface 154B,
- a radially flat surface 153 B extending to the outer peripheral surface of the solenoid case 42 along the radial direction of the solenoid case 42.
- the inclined surface 152B in the caulking groove 150B according to the second embodiment has the same inclination angle ⁇ as the inclined surface 152A in the caulking groove 150A according to the first embodiment.
- the axial flat surface 154B of the caulking groove portion 150B according to the second embodiment corresponds to a first flat surface.
- the axially flat surface 154 B of the caulking groove portion 150 B according to the second embodiment is located radially outside the case 40 than the mold resin portion 130 that protects the coil 121.
- the intersection of the axial flat surface 154 B and the radial flat surface 153 B is located radially outside the solenoid case 42 than the mold resin portion 130.
- the radial flat surface 153B of the crimping groove 150B according to the second embodiment has the same position along the axial direction of the solenoid case 42 as the radial flat surface 153A of the crimping groove 150A according to the first embodiment. is there.
- one end of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41 is at a substantially intermediate position in the axial direction of the flat surface 154B. Be placed.
- An axial interval is provided between one end of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41 and the radial flat surface 153B of the caulking groove 150B.
- the intersection of the outer peripheral surface of the solenoid case 42 and the inclined surface 152 B is located on the other end side (the sealing member 131 side) of the starting point of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41.
- the caulking portion 45B after the other end of the solenoid case 42 is disposed in the valve case 41, one end of the thin wall portion 47 of the valve case 41 is caulked using the case 40. Bend towards the inside of the Then, the inner circumferential surface of the thin wall portion 47 of the valve case 41 except for the projecting portion 50 at one end abuts on the inclined surface 152B provided in the caulking groove portion 150B. Further, the inner peripheral edge of one end of the projecting portion 50 provided in the thin wall portion 47 of the valve case 41 contacts the axial flat surface 154B provided in the caulking groove portion 150B.
- the inner circumferential surface of the projecting portion 50 provided in the thin wall portion 47 is in a state of floating without contacting the inclined surface 152B and the axial flat surface 154B of the caulking groove 150B.
- the other end of the solenoid case 42 is crimped and fixed in the valve case 41 by the caulking portion 45B according to the second embodiment.
- the wall portion between the radial flat surface 153A of the caulking groove portion 150A according to the first embodiment and the mold resin portion 130 of the coil 121 is thin.
- saturation of the magnetic flux occurs in the thin portion, and there is a concern that a predetermined thrust can not be obtained.
- an axial flat surface 154B is provided, and the axial flat surface 154B is positioned radially outward of the mold resin portion 130 in the case 40.
- the thickness of the wall between the crimp groove 150B according to the second embodiment and the mold resin portion 130 of the coil 121 can be made thicker than in the first embodiment. Thereby, saturation of magnetic flux can be suppressed and a predetermined thrust can be obtained. Furthermore, in the caulking portion 45B according to the second embodiment, the same function and effect as the caulking portion 45A according to the first embodiment can be achieved.
- the caulking portion 45C according to the third embodiment is different from the caulking portion 45B according to the second embodiment in the shape of a caulking groove portion 150C provided on the outer peripheral surface on the other end side of the solenoid case 42.
- the caulking groove portion 150C according to the third embodiment is a first inclined surface 152C 'which is inclined inward of the case 40 from the valve case 41 to the solenoid case 42 continuously from the outer peripheral surface of the solenoid case 42.
- an axially flat surface 154C which extends from the end of the first inclined surface 152C ′ to the opposite side to the valve case 41 and extends along the axial direction of the case 40, and an outer peripheral surface of the solenoid case 42
- a second inclination that extends to the end of the direction flat surface 154C and inclines inward of the case 40 from the solenoid case 42 side to the valve case 41 side (one end side to the other end side) and is shallower than the axial flat surface 154C.
- a surface 152C ′ ′ which extends from the end of the first inclined surface 152C ′ to the opposite side to the valve case 41 and extends along the axial direction of the case 40, and an outer peripheral surface of the solenoid case 42
- a second inclination that extends to the end of the direction flat surface 154C and inclines inward of the case 40 from the solenoid case 42 side to the valve case 41 side (one end side to the other end side) and is shallower than the axial flat
- the axially flat surface 154C of the caulking groove 150C according to the third embodiment corresponds to a first flat surface
- the second inclined surface 152C ′ ′ corresponds to a second flat surface.
- the first inclined surface 152C 'and the axial flat surface 154C in the crimping groove 150C according to the third embodiment are the same as the inclined surface 152B and the axial flat surface 154B in the crimping groove 150B according to the second embodiment.
- the caulking groove portion 150C according to the third embodiment has the same configuration, except that the radial flat surface 153B of the caulking groove portion 150B according to the second embodiment is replaced with a second inclined surface 152C ′ ′. .
- the second inclined surfaces 152 C ′ ′ of the caulking groove 150 C according to the third embodiment are formed symmetrically with respect to the radial direction of the first inclined surface 152 ′ and the solenoid case 42.
- the caulking portion 45C according to the third embodiment after the other end of the solenoid case 42 is disposed in the valve case 41, one end portion of the thin wall portion 47 of the valve case 41 is caulked with the case 40. Bend towards the inside of the Then, as with the caulking portion 45B according to the second embodiment, the inner peripheral surface of the one end portion of the thin wall portion 47 of the valve case 41 excluding the projecting portion 50 is a first inclined surface provided in the caulking groove portion 150C. Abuts on 152C '. The inner peripheral edge of one end of the projecting portion 50 provided in the thin wall portion 47 of the valve casing 41 contacts the axial flat surface 154C provided in the caulking groove 150C. Thus, the other end of the solenoid case 42 is crimped and fixed in the valve case 41 by the caulking portion 45C according to the third embodiment.
- the caulking groove portion 150C according to the third embodiment described above can exert the same function and effect as the caulking portion 45A according to the first embodiment, and one end of the thin wall portion 47 of the valve case 41.
- a second inclined surface 152C ′ ′ can form a relief for the moving region of one end of the thin wall portion 47, and the caulking process is efficient Can be done.
- the caulking portion 45D according to the fourth embodiment is different from the caulking portion 45C according to the third embodiment in the shape of a caulking groove portion 150D provided on the outer peripheral surface on the other end side of the solenoid case 42.
- the caulking groove portion 150D according to the fourth embodiment has a radially flat surface 153D continuously extending in a radial direction from the outer peripheral surface of the solenoid case 42, and an end portion of the radially flat surface 153D on the valve case 41 side.
- a first inclined surface 152D ' which is continuously provided on the opposite side and inclines inward of the case 40 from the valve case 41 side toward the solenoid case 42, and an end of the first inclined surface 152D' from the valve case 41 side , And extends from the outer peripheral surface of the solenoid case 42 to the end of the axial flat surface 154D, extending from the outer peripheral surface of the solenoid case 42 to the valve case from the solenoid case 42 side.
- a second inclined surface 152D ′ ′ that inclines inward of the case 40 toward the 41 side.
- the first inclined surface 152D ′, the axially flat surface 154D, and the second inclined surface 152D ′ ′ in the crimping groove 150D according to the fourth embodiment are the first inclined surfaces in the crimping groove 150C according to the third embodiment.
- the caulking groove 150D according to the fourth embodiment has a diameter substantially the same as that of the axial groove 152C ′, the axial flat surface 154C, and the second inclined surface 152C ′ ′, and the caulking groove 150C according to the third embodiment. It is the structure which added direction flat surface 153D.
- the axial flat surface 154D of the caulking groove portion 150D according to the fourth embodiment corresponds to a first flat surface
- the second inclined surface 152D ′ ′ corresponds to a second flat surface, and in the radial direction.
- the flat surface 153D corresponds to a third flat surface.
- the caulking portion 45D after the other end of the solenoid case 42 is disposed in the valve case 41, one end portion of the thin wall portion 47 of the valve case 41 is caulked using the case 40. Bend towards the inside of the Then, one end of the thin wall portion 47 of the valve case 41 is bent toward the inside of the case 40 based on the point of intersection of the radial flat surface 153D of the caulking groove 150D with the outer peripheral surface of the solenoid case 42.
- the inner circumferential surface of the thin wall 47 of the case 41 except for the projecting portion 50 at one end abuts on the first inclined surface 152D 'of the crimping groove.
- the inner peripheral edge of one end of the projecting portion 50 provided on the thin wall portion 47 of the valve case 41 contacts an axial flat surface 154D provided on the caulking groove portion 150D.
- the inner circumferential surface of the thin wall portion 47 of the valve case 41 except for the projecting portion 50 at one end does not contact the radial flat surface 153D of the caulking groove 150D, and is provided on the thin wall portion 47.
- the inner peripheral surface of the protruding portion 50 is also not in contact with the first inclined surface 152D 'and the axial flat surface 154D of the caulking groove portion 150D.
- the other end of the solenoid case 42 is crimped and fixed in the valve case 41 by the caulking portion 45D according to the fourth embodiment.
- the caulking groove portion 150D according to the fourth embodiment described above can exhibit the same function and effect as the caulking portion 45A according to the first embodiment, and continuously from the outer peripheral surface of the solenoid case 42.
- a radially extending flat surface 153D is provided which can function as a reference surface in which the thin wall portion 47 of the valve case 41 is bent when the radially flat surface 153D is crimped. Can be improved.
- the present invention is not limited to the above-described embodiment, but includes various modifications.
- the above-described embodiment is described in detail to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations.
- part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
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Abstract
Description
前記筒部材は、第1の筒体と、該第1の筒体の外側であって、該第1の筒体の延在方向に沿って配される第2の筒体と、前記第1の筒体に対し前記第2の筒体をかしめて固定するかしめ部と、を有し、
前記かしめ部は、前記第1の筒体の外周面にその周方向に沿って設けられる溝部と、該溝部内に折り曲げられて収納される前記第2の筒体の端部と、からなり、前記溝部は、前記第2の筒体側から前記第1の筒体側に向けて前記筒部材の内方に傾斜する傾斜面を有する。
本実施形態に係る減衰力調整式緩衝器1は、車体と台車との間に縦置き状態で取り付けられる鉄道車両用上下動ダンパとして採用される。なお、本実施形態では、縦置き状態で取り付けられる鉄道車両用上下動ダンパを例として示すが、左右動ダンパや、ヨーダンパに用いてもよい。また、本実施形態に係る減衰力調整式緩衝器1を、自動車のダンパとして採用してもよい。
図2に示すように、減衰力発生手段25は、パイロット型のメインバルブ32、及びフェイル時に作動するフェイルバルブ33等を備えたバルブブロック35と、メインバルブ32の開弁圧力を制御するソレノイド駆動の圧力制御弁であるパイロットバルブ36を作動させるソレノイドブロック37と、を備えている。図1に示すように、これらソレノイドブロック37及びバルブブロック35は同軸上に配置され、外筒3の軸方向と直交する方向に沿って配置されている。図2に示すように、これらバルブブロック35とソレノイドブロック37とは、円筒状のケース40内に配置されている。ケース40は、バルブブロック35を収容するバルブケース41と、ソレノイドブロック37を収容するソレノイドケース42とを第1の実施形態に係るかしめ部45Aによってかしめ固定して構成される。ソレノイドブロック37が、一端側で、外筒3から径方向最も外側に配置され、バルブブロック35が、他端側で、外筒3に近い側に配置されている。なお、ケース40が筒部材に相当する。
その後、バルブケース41の薄壁部47の一端部を、ソレノイドケース42の径方向外方を軸方向に沿って一端側から他端側に向かって移動する、図示しないかしめ治具により、ケース40の内方に向けて折り曲げる。すると、バルブケース41の薄壁部47の一端部における突設部50を除く内周面が、ソレノイドケース42のかしめ用溝部150Aに設けた傾斜面152Aに当接する。このとき、薄壁部47に設けた突設部50の内周面は、かしめ用溝部150Aの傾斜面152Aには当接せずに浮いた状態となる。これにより、ソレノイドケース42の他端がバルブケース41内に、第1の実施形態に係るかしめ部45Aによりかしめ固定される。
まず、ピストンロッド6の伸び行程時には、シリンダ2内のピストン5の移動によって、ピストン5の逆止弁13が閉じ、ディスクバルブ14の開弁前では、シリンダ上室2A側の油液が加圧されて、油液が通路22及び環状通路21を通り、セパレータチューブ20の接続口23から減衰力発生手段25の通路部材60の連通路63に流入する。その後、油液が減衰力発生手段25を通過することで減衰力が発生されてリザーバ4に戻る。
この伸び行程時には、ピストン5が移動した分の油液は、リザーバ4からベースバルブ10の通路15を経由して逆止弁17を開いて、シリンダ下室2Bへ流入する。なお、シリンダ上室2Aの圧力がピストン5のディスクバルブ14の開弁圧力に達すると、ディスクバルブ14が開いて、シリンダ上室2Aの圧力を、通路11を介してシリンダ下室2Bへリリーフすることにより、シリンダ上室2Aの過度の圧力の上昇を防止する。
Claims (6)
- 減衰力調整式緩衝器であって、
前記減衰力調整式緩衝器は、筒部材を有しており、
前記筒部材の内部に、減衰力発生手段と該減衰力発生手段とを駆動するソレノイドが収納されており、
前記減衰力調整式緩衝器のシリンダ内におけるピストンの移動に伴う作動流体の流れが、前記筒部材内の前記減衰力発生手段によって制御されて減衰力を発生しており、
前記筒部材は、
第1の筒体と、
該第1の筒体の外側であって、該第1の筒体の延在方向に沿って配される第2の筒体と、
前記第1の筒体に対し前記第2の筒体をかしめて固定するかしめ部と、を有し、
前記かしめ部は、
前記第1の筒体の外周面にその周方向に沿って設けられる溝部と、
該溝部内に折り曲げられて収納される前記第2の筒体の端部と、からなり、
前記溝部は、前記第2の筒体側から前記第1の筒体側に向けて前記筒部材の内方に傾斜する傾斜面を有する、減衰力調整式緩衝器。 - 請求項1に記載の減衰力調整式緩衝器において、
前記溝部は、前記第2の筒体側と反対側に設けられた第1の平坦面であって、前記傾斜面から連続する前記第1の平坦面を有する、減衰力調整式緩衝器。 - 請求項2に記載の減衰力調整式緩衝器において、
前記第1の平坦面は、前記筒部材の軸方向に沿って延びる、減衰力調整式緩衝器。 - 請求項2または3に記載の減衰力調整式緩衝器において、
前記溝部は、前記第2の筒体側と反対側に設けられた第2の平坦面であって、前記第1の平坦面から連続して延び該第1の平坦面よりも浅い前記第2の平坦面を有する、減衰力調整式緩衝器。 - 請求項4に記載の減衰力調整式緩衝器において、
前記第2の平坦面は、前記第1の筒体側から前記第2の筒体側に向けて前記筒部材の内方に傾斜する傾斜面である、減衰力調整式緩衝器。 - 請求項1乃至5のいずれか1項に記載の減衰力調整式緩衝器において、
前記溝部は、前記第2の筒体側に設けられた第3の平坦面であって、前記傾斜面から連続して前記第1の筒体の外周面に至る範囲に前記筒部材の径方向に沿って延びる前記第3の平坦面を有する、減衰力調整式緩衝器。
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JP2019532590A JP6817447B2 (ja) | 2017-07-26 | 2018-07-23 | 減衰力調整式緩衝器 |
DE112018003800.9T DE112018003800B4 (de) | 2017-07-26 | 2018-07-23 | Dämpfungskraftverstellbarer Stoßdämpfer |
US16/632,701 US11346421B2 (en) | 2017-07-26 | 2018-07-23 | Damping force adjustable shock absorber |
KR1020207002313A KR102441213B1 (ko) | 2017-07-26 | 2018-07-23 | 감쇠력 조정식 완충기 |
CN201880049049.2A CN110998132B (zh) | 2017-07-26 | 2018-07-23 | 阻尼力调节式缓冲器 |
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- 2018-07-23 DE DE112018003800.9T patent/DE112018003800B4/de active Active
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Also Published As
Publication number | Publication date |
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KR20200022006A (ko) | 2020-03-02 |
US11346421B2 (en) | 2022-05-31 |
CN110998132B (zh) | 2021-09-03 |
DE112018003800T5 (de) | 2020-05-07 |
US20200141468A1 (en) | 2020-05-07 |
CN110998132A (zh) | 2020-04-10 |
JPWO2019021994A1 (ja) | 2020-03-19 |
JP6817447B2 (ja) | 2021-01-20 |
KR102441213B1 (ko) | 2022-09-06 |
DE112018003800B4 (de) | 2022-06-09 |
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