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WO2010058575A1 - Amortisseur rotatif - Google Patents

Amortisseur rotatif Download PDF

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Publication number
WO2010058575A1
WO2010058575A1 PCT/JP2009/006206 JP2009006206W WO2010058575A1 WO 2010058575 A1 WO2010058575 A1 WO 2010058575A1 JP 2009006206 W JP2009006206 W JP 2009006206W WO 2010058575 A1 WO2010058575 A1 WO 2010058575A1
Authority
WO
WIPO (PCT)
Prior art keywords
peripheral surface
container
rotating body
inner peripheral
pair
Prior art date
Application number
PCT/JP2009/006206
Other languages
English (en)
Japanese (ja)
Inventor
小島正光
沖村明彦
五十嵐美照
堀田尚弘
Original Assignee
オイレス工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008297376A external-priority patent/JP5217952B2/ja
Priority claimed from JP2009062102A external-priority patent/JP5212197B2/ja
Application filed by オイレス工業株式会社 filed Critical オイレス工業株式会社
Priority to EP09827356.8A priority Critical patent/EP2348228A4/fr
Priority to CN200980146728.2A priority patent/CN102216644B/zh
Priority to US13/129,655 priority patent/US8757337B2/en
Publication of WO2010058575A1 publication Critical patent/WO2010058575A1/fr
Priority to US14/027,881 priority patent/US9163692B2/en

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Classifications

    • 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
    • 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
    • F16F9/145—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only rotary movement of the effective parts

Definitions

  • the present invention relates to a rotary damper that rotatably accommodates a rotating body having a vane inside a container that contains a viscous fluid, and applies braking to the relative rotation of the rotating body with respect to the container by the viscous fluid. .
  • a one-way rotary damper of this type that gives a large brake to one rotation of the rotating body and a small brake to the other rotation of the rotating body by the viscous fluid passing through the gap. It is known from Patent Document 1 and the like.
  • JP 2005-188636 A JP 9-42350 A JP-A-9-329173 JP-A-8-109940 JP-A-8-296687
  • the present invention has been made in view of the above-described points, and the object of the present invention is to provide a brake that does not depend on the temperature of generated braking and that does not change at high or low temperatures. Another object of the present invention is to provide a rotary damper suitable for use in a vehicle seat.
  • a rotary damper includes a container that houses therein a viscous fluid whose viscosity decreases as the temperature rises, and a container that is rotatably disposed inside the container and cooperates with the container.
  • a rotating body that divides the interior of the rotating body into at least two chambers.
  • the rotating body is rotatably supported by the housing body, and an elastic vane provided on the outer peripheral surface of the rotating body.
  • the elastic vane is connected to the outer peripheral surface of the rotating body main body at one end, and faces the inner peripheral surface of the container at the other end and cooperates with the inner peripheral surface of the container.
  • the convex surface has, on the other end side, an arc-shaped convex surface that forms a pair of wedge spaces facing each other in the circumferential direction with the inner peripheral surface of the container.
  • the radial width of the one wedge space is determined so that the radial width of one wedge space communicating with one of the chambers gradually decreases toward the other wedge space in the circumferential direction.
  • the other wedge space communicating with the other one of the two chambers is gradually narrowed toward the one wedge space in the circumferential direction.
  • the radial width of the space is determined, and the viscous fluid passing through the pair of wedge spaces elastically deflects the elastic vane and determines the radial width of the pair of wedge spaces by the viscosity. ing.
  • the viscous fluid is applied to the curved convex surface of the elastic vane. Since the pressure is applied, the elastic vane is elastically deformed so that the other end side of the elastic vane is separated from the inner peripheral surface of the container to widen the pair of wedge spaces. As a result, the viscous fluid is spread to the pair of wedge spaces.
  • a small brake is applied to the rotation of the rotating body by the viscous fluid flowing from one chamber to the other chamber and passing through the pair of expanded wedge spaces, while the one chamber is enlarged and the other chamber is expanded.
  • the rotating body When the rotating body is rotated relative to the container so as to reduce the pressure, the pressure of the viscous fluid is applied to the concave surface of the elastic vane, so that the other end side of the elastic vane approaches the inner peripheral surface of the container. Elastic to shrink a pair of wedge spaces As a result of the elastic deformation of the fluid, the viscous fluid flows through the pair of reduced wedge spaces from the other chamber to the one chamber, and large braking by the viscous fluid passing through the reduced pair of wedge spaces is caused. Given the rotation of the rotating body, it operates as a one-way damper.
  • the rotary damper since the viscous fluid whose viscosity decreases as the temperature rises passes through the pair of wedge spaces in the rotation of the rotating body, for example, at a lower temperature than normal temperature (20 ° C.).
  • the elastic vane is arranged so that the other end side of the elastic vane is separated from the inner peripheral surface of the container due to an increase in the pressure of the viscous fluid in the pair of wedge spaces.
  • the inner peripheral surface of the container is connected to the cylindrical inner peripheral surface that forms one wedge space in cooperation with the arcuate convex surface, and the cylindrical inner peripheral surface.
  • the curved concave inner peripheral surface has a shape complementary to the convex surface, and the arc-shaped convex surface has a radius of curvature smaller than the radius of curvature of the cylindrical inner peripheral surface.
  • the rotary damper according to the present invention has a temperature between a container having a cylindrical inner peripheral surface, and a cylindrical inner peripheral surface of the container and a cylindrical outer peripheral surface concentric with the inner peripheral surface.
  • the relative rotation in the direction gives a large flow resistance to the viscous fluid
  • the relative rotation in the other direction which is opposite to the relative rotation in one direction of the rotating body with respect to the container, is smaller than the flow resistance.
  • Vane means disposed in a space for accommodating a viscous fluid between the cylindrical inner peripheral surface of the container and the cylindrical outer peripheral surface of the rotating body, in order to generate flow resistance, respectively.
  • the means includes a cylindrical inner peripheral surface of the container and a cylindrical outer surface of the rotating body.
  • a pair of elastic vanes that divide a space containing the viscous fluid between the surfaces into two chambers, and at least one of the two chambers partitioned by the pair of elastic vanes is further divided into two chambers
  • Each of the pair of elastic vanes is connected to the outer peripheral surface of the rotating body at one end and protrudes in the opposite direction to the relative rotation in one direction of the rotating body with respect to the housing body.
  • a pair of wedge spaces facing each other in the rotational direction of the relative rotation of the rotating body with respect to the container are arcuate convex surfaces formed between the inner peripheral surface of the container and the arcuate convex surface In the direction of rotation relative to the body.
  • the radial width of one wedge space communicating with one of the two adjacent chambers with the arcuate convex surface in between is the arcuate convex surface in the rotational direction of relative rotation of the rotating body with respect to the container.
  • the width of one wedge space is determined in a radial direction so as to gradually narrow toward the other wedge space communicating with the other of the two adjacent chambers, and the container
  • the width of the other wedge space communicating with the other of the two adjacent chambers with the arcuate convex surface in the rotation direction of the relative rotation of the rotating body relative to the rotating body is relative to the containing body.
  • the radial direction of the other wedge space so as to gradually narrow toward one wedge space communicating with one of the two adjacent chambers with the arcuate convex surface in between in the rotation direction of rotation.
  • the width of the wedge passes through a pair of wedge spaces
  • the viscous fluid elastically deflects each of the pair of elastic vanes and determines the radial width of the pair of wedge spaces based on the viscosity.
  • Such a rotary damper is also divided by each of the pair of elastic vanes and in the two chambers adjacent to each other in the rotational direction of the relative rotation of the rotating body with respect to the container, relative to one direction of the rotating body with respect to the container. Rotate relative to the container so as to enlarge one chamber located on the relative rotation side in the other direction opposite to the rotation and to reduce the other chamber on the relative rotation side in one direction of the rotation body relative to the container.
  • the viscous fluid whose viscosity decreases as the temperature rises passes through the pair of wedge spaces in the rotation of the rotating body, for example, the viscosity is lower than that at normal temperature (20 ° C.) at low temperature.
  • the pair of elastic vanes are separated from the inner peripheral surface of the container by increasing the pressure of the viscous fluid in the pair of wedge spaces.
  • the viscous fluid itself increases in viscosity and the flow resistance decreases due to the expansion of the pair of wedge spaces.
  • the arcuate convex surface has a radius of curvature smaller than the radius of curvature of the inner peripheral surface of the container.
  • the other elastic vanes are formed integrally with the inner peripheral surface of the container, and integrally formed with the base and on the outer peripheral surface of the rotating body. And an elastically flexible tongue having opposed arcuate surfaces.
  • the tongue portion has an arcuate concave surface that forms a pair of wedge spaces facing each other in the rotation direction of the relative rotation of the rotating body with respect to the container, and the outer peripheral surface of the rotating body.
  • the arcuate concave surface may have one wedge communicated with one of the two adjacent chambers with the arcuate concave surface in the rotation direction of the relative rotation of the rotating body with respect to the container.
  • the radial width of the one wedge space is determined so that the radial width of the space gradually decreases toward the other wedge space communicating with the other of the two adjacent chambers.
  • the width in the radial direction of the other wedge space communicating with the other one of the two adjacent chambers gradually increases toward the one wedge space communicating with one of the two adjacent chambers.
  • the radial width of the other wedge space is determined so that it becomes narrower And which, viscous fluid passing through the pair of wedge spaces may be adapted to each of the other elastic vanes so as to determine the width in the radial direction of the pair of wedge spaces by their viscosity flexed elastically.
  • the concave surface extends along the convex surface so as to gradually approach the convex surface from one end to the other end of the convex surface.
  • silicone oil can be cited as a preferred example of the viscous fluid.
  • the container may be made of metal, but the weight and cost may be reduced. It may be made of a hard synthetic resin for reasons such as reduction of the rotation, and the rotating body may also be made of metal, but may be made of a hard synthetic resin for reasons such as weight reduction and cost reduction.
  • the elastic vane may be fixed to the rotating body by welding, fitting, adhesion, etc.
  • the rotating body is made of a synthetic resin material that imparts appropriate elasticity to the elastic vanes, and the pair of elastic vanes are also separated from the rotating body. Welding, fitting, bonding, etc. to the rotating body
  • the rotating body has an appropriate elasticity for each of the pair of elastic vanes.
  • a synthetic resin material to which is applied and other elastic vanes may be fixed to the container by welding, fitting, adhesion, etc. separately from the container, but preferably
  • the container is made of a synthetic resin material that imparts appropriate elasticity to each of the other elastic vanes. Is preferred.
  • the generated braking does not depend on temperature, can obtain the braking which does not change at high temperature and low temperature, and can provide a rotary damper suitable for use in vehicle seats for automobiles and the like. .
  • FIG. 1 is a cross-sectional explanatory view taken along the line II of FIG. 2 showing a preferred example of the present invention.
  • 2 is a cross-sectional explanatory view taken along the line II-II in the example shown in FIG.
  • FIG. 3 is an external explanatory view of the example shown in FIG.
  • FIG. 4 is a partially enlarged explanatory view of the example shown in FIG.
  • FIG. 5 is an operation explanatory diagram of the example shown in FIG.
  • FIG. 6 is an operation explanatory diagram of the example shown in FIG.
  • FIG. 7 is a cross-sectional explanatory view taken along the line VII-VII in FIG. 8 of another preferred example of the present invention.
  • 8 is a cross-sectional explanatory view taken along the line VIII-VIII in FIG.
  • FIG. 10 of the example shown in FIG. 9 is a cross-sectional explanatory view taken along the line IX-IX in FIG. 10 of the example shown in FIG.
  • FIG. 10 is a front view of the example shown in FIG.
  • FIG. 11 is a rear view of the example shown in FIG.
  • FIG. 12 is a perspective view of the example shown in FIG.
  • FIG. 13 is a partially enlarged explanatory view of the example shown in FIG.
  • FIG. 14 is an explanatory view in which a rotating shaft is attached to the example shown in FIG. 15 is a perspective view of the rotating shaft shown in FIG.
  • FIG. 16 is an explanatory diagram of an example in which the example shown in FIG. 7 is mounted on a vehicle seat.
  • FIG. 17 is a diagram for explaining the operation of the example shown in FIG.
  • FIG. 18 is a diagram for explaining the operation of the example shown in FIG.
  • a rotary damper 1 of this example includes a synthetic resin container 4 that contains a viscous fluid 3 that is made of silicone oil or the like and that decreases in viscosity as the temperature rises, and a container. At least two chambers in the interior 2 of the housing 4 in cooperation with the housing 4 and arranged so as to be rotatable in the directions R1 and R2 about the axis O.
  • a rotating body 9 made of synthetic resin is provided that is divided into two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8.
  • the container 4 is a pair of cylinders 17 having inner peripheral surfaces 15 and 16 and a pair of screws 17 fixed to one and the other annular end surfaces 18 and 19 in the axial direction A of the cylinder 17.
  • the lid bodies 21 and 22 are provided.
  • the inner peripheral surface 15 is a cylinder centered on the axis O.
  • Each of the cylindrical inner peripheral surface 28 is formed of a concave surface like the curved concave inner peripheral surface 27, and the cylindrical inner peripheral surface 29 is formed of a convex surface.
  • the cylindrical body 17 includes a cylindrical cylindrical main body 35 having a cylindrical inner peripheral surface 25, a pair of protrusions 36 that are formed integrally with the cylindrical main body 35 in a similar manner with a symmetrical shape with respect to the axis O, and 37 has a curved concave inner peripheral surface 27 of the inner peripheral surface 15 and a cylindrical inner peripheral surface 28 and a cylindrical inner peripheral surface 29 of the inner peripheral surface 16.
  • the portion 37 has a curved concave inner peripheral surface 27 of the inner peripheral surface 16, a cylindrical inner peripheral surface 28 and a cylindrical inner peripheral surface 29 of the inner peripheral surface 15.
  • the lid body 21 having the through-hole 41 in the center defines one side 42 in the axial direction A of the inside 2 with one side face 42 in the axial direction A, and the lid body 22 having the through-hole 43 in the center.
  • the one side surface 44 in the axial direction A defines the other of the inner 2 in the axial direction A.
  • the rotating body 9 includes a hollow rotating body main body 51 that is supported by the housing body 4 so as to be rotatable in the R1 and R2 directions, and a pair of elastic bodies integrally provided on the outer peripheral surface 52 of the rotating body main body 51. And vanes 53 and 54.
  • a rotating shaft is fitted in the hollow portion 55 at the center of the cylindrical rotating body 51.
  • the rotating body 51 is rotated in the same direction by the rotation of the rotating shaft in the R1 and R2 directions.
  • the attenuation object is connected to the rotating shaft.
  • the outer peripheral surface 52 of the rotator main body 51 is in contact with the arcuate tip surfaces 56 of the protrusions 36 and 37 so as to be slidable in the R1 and R2 directions.
  • the two chambers consisting of the chambers 5 and 6 and the two chambers consisting of the chambers 7 and 8 are closely separated from each other by contact with the respective arcuate tip surfaces 56 of 36 and 37.
  • the elastic vane 53 is connected to the outer peripheral surface 52 of the rotating body 51 at one end. On the other hand, at the other end, it faces the cylindrical inner peripheral surface 25 of the inner peripheral surface 15 of the container 4 in the vicinity and faces one of the two chambers 5 and 6 in cooperation with the inner peripheral surface 15 of the container 4.
  • the curved convex surface 26 forming the chamber 5 and one end connected to the outer peripheral surface 52 of the rotating body main body 51 at one end corresponding to the convex surface 26, while extending along the convex surface 26 and the inner peripheral surface 15 of the container 4.
  • a curved concave surface 64 which forms the other chamber 6 of the two chambers 5 and 6 in cooperation.
  • the convex surface 26 forms a pair of wedge spaces 71 and 72 facing each other in the circumferential direction R on the other end side between the cylindrical inner peripheral surface 25 of the container 4 and the curvature radius of the cylindrical inner peripheral surface 25.
  • the arcuate convex surface 73 has a smaller radius of curvature, and the arcuate convex surface 73 has a width in the radial direction B of one wedge space 71 communicating with the chamber 5 in the circumferential direction R.
  • the width in the radial direction B of the one wedge space 71 is determined so as to gradually become narrower toward the wedge space 72 and the width in the radial direction B of the other wedge space 72 communicating with the chamber 6 is determined.
  • the width of the other wedge space 72 in the radial direction B is determined so that the width gradually decreases toward the one wedge space 71 in the circumferential direction R, and passes through the pair of wedge spaces 71 and 72.
  • the viscous fluid 3 is bent by the elastic vane 53 and the viscosity of the chamber 5 Chamber and a 6 adapted to determine the width in the radial direction B of the pair of wedge spaces 71 and 72 that communicates.
  • the concave surface 64 extends along the convex surface 26 so as to gradually approach the convex surface 26 from one end to the other end of the convex surface 26 and ends at the end of the convex surface 26, whereby the elastic vane 53 is formed on the rotating body 51. It is formed so as to gradually become thinner from the connected base 74 to the other end 75 which is the free end thereof.
  • One side surface 42 in the axial direction A of the lid 21 is in slidably close contact with one end surface 81 in the axial direction A of the rotating body 9 so as to be able to rotate in the R1 and R2 directions.
  • One side surface 44 of the body 22 in the axial direction A is in slidably close contact with the other end surface 82 of the rotating body 9 in the axial direction A so as to be able to rotate in the R1 and R2 directions.
  • the accommodating body 4 is provided from the chambers 5 and 6.
  • a seal ring 85 for preventing leakage of the viscous fluid 3 to the outside is disposed.
  • the rotating body 9 is in the R1 direction with respect to the container 4 so that one chamber 5 is reduced while the other chamber 6 is enlarged.
  • the pressure of the viscous fluid 3 is applied to the curved convex surface 26 of the elastic vane 53, the other end 75 side of the elastic vane 53 is separated from the cylindrical inner peripheral surface 25 of the container 4.
  • the elastic vane 53 is elastically deformed so as to widen the pair of wedge spaces 71 and 72, so that the viscous fluid 3 flows from the one chamber 5 to the other chamber 6 through the pair of wedge spaces 71 and 72 widened.
  • the viscous fluid 3 whose viscosity decreases as the temperature rises passes through the pair of wedge spaces 71 and 72 in the rotation of the rotating body 9 in the R1 and R2 directions.
  • the pressure of the viscous fluid 3 in the pair of wedge spaces 71 and 72 increases the elastic vane 53.
  • the elastic vane 53 being greatly elastically deformed so that the end 75 side is further away from the cylindrical inner peripheral surface 25 of the container 4 than at normal temperature, the pair of wedge spaces 71 and 72 are greatly expanded as compared with normal temperature.
  • the rotary damper 1 has a pair of elastic vanes 53 and 54
  • the rotary damper of the present invention has one or three or more elastic vanes instead of the pair of elastic vanes. May be.
  • a rotary damper 101 of another example shown in FIGS. 7 to 13 includes a synthetic resin container 103 having a cylindrical inner peripheral surface 102, an inner peripheral surface 102, and the inner peripheral surface 102 with respect to the axis O.
  • the container 103 is formed inside the container 103 so as to form a space 106 for containing the viscous fluid 105 made of silicone oil or the like and having a viscosity that decreases as the temperature rises between the concentric cylindrical outer peripheral surface 104.
  • the rotating body 107 made of synthetic resin, which is relatively rotatable about the axis O in the R1 and R2 directions, and the relative rotation in one direction of the rotating body 107 with respect to the housing 103, this example
  • a large flow resistance is exerted on the viscous fluid 105, and the other of the rotating body 107 in the opposite direction with respect to the relative rotation of the rotating body 107 with respect to the container 103
  • the rotation of the rotating body 107 with respect to the container 103 in the R2 direction includes vane means 108 disposed in the space 106 so as to generate a flow resistance smaller than the flow resistance. is doing.
  • the container 103 is integrated radially inward with a cylindrical portion 115 having a cylindrical inner peripheral surface 102 and one annular end portion 116 in the A direction that is the axial direction of the cylindrical portion 115. And a lid body 119 having an inner peripheral surface 118 defining a through-hole 117 and a plurality of screws 121 fixed to the other annular end portion 120 in the A direction of the cylindrical portion 115. 122.
  • the flange portion 119 defines one side in the A direction of the space 106 with one side surface 125 in the A direction, and the lid body 122 has a through hole 126 at the center and through holes 127 and 128 at both ends. And an elliptical plate-like portion 130 that defines the other side of the space 106 in the A-direction with one side surface 129 in the A-direction, and a cylindrical protrusion integrally formed on one side surface 129 of the plate-like portion 130 131.
  • the hollow rotating body 107 has an inner peripheral surface 134 of the plate-like portion 130 that defines the inner peripheral surface 118 and the through hole 126 of the flange portion 119 of the containing body 103 by the annular end portions 132 and 133 in the axial direction A. Further, the inner peripheral surface 136 that defines the hollow portion 135 of the rotating body 107 has unevenness (serration) 137 so as to be rotatable in the R1 and R2 directions.
  • a seal ring 138 for preventing leakage of the viscous fluid 105 from the space 106 to the outside of the housing body 103 is disposed between the inner peripheral surface 134 of the rotating body 107 and the end portion 133 of the rotating body 107 in the axial direction A.
  • the vane means 108 is disposed inside the container 103 for containing the viscous fluid 105 between the cylindrical inner peripheral surface 102 of the container 103 and the cylindrical outer peripheral surface 104 of the rotating body 107 concentric with the inner peripheral surface 102.
  • a pair of elastic vanes 149 and 150 are provided as other elastic vanes that divide the two chambers 141 and 142 into two chambers 145 and 146 and 147 and 148, respectively.
  • the elastic vane 143 and the elastic vane 144, and the elastic vane 149 and the elastic vane 150 are formed in a similar manner with respect to the axis O.
  • the elastic vane 143 and the elastic vane 149 will be described in detail, and the elastic vane 144 and the elastic vane 150 will be described and illustrated with the same reference numerals as those of the elastic vane 143 and the elastic vane 149.
  • the elastic vane 143 that divides the chamber 146 and the chamber 147 is connected to the outer peripheral surface 104 of the rotating body 107 at one end and has a curved convex surface 161 that is convex toward the R2 direction of the rotating body 107 with respect to the housing 103.
  • the convex surface 161 extends along the convex surface 161 so as to be connected to the outer peripheral surface 104 of the rotating body 107 at one end and gradually approach the convex surface 161 from one end to the other end of the convex surface 161.
  • a curved concave surface 162 that terminates together with a terminal end of the curved surface.
  • the convex surface 161 has a pair of wedge spaces 163 and 164 facing each other in the R1 and R2 directions which are also the rotation direction R of the relative rotation of the rotating body 107 with respect to the container 103, and the inner peripheral surface 102 of the cylindrical portion 115.
  • an arcuate convex surface 165 having a radius of curvature smaller than the radius of curvature of the inner peripheral surface 102, and the arcuate convex surface 165 is formed in one wedge space 163 communicating with the chamber 146.
  • the width in the radial direction of the one wedge space 163 is determined so that the width in the B direction, which is the radial direction, gradually becomes narrower in the rotation direction R toward the other wedge space 164.
  • the width of the other wedge space 164 in the B direction is determined so that the width of the other wedge space 164 in the B direction gradually decreases in the rotation direction R toward the one wedge space 163.
  • the viscous fluid 105 passing through the pair of wedge spaces 163 and 164 elastically deflects the elastic vane 143 and determines the width of the pair of wedge spaces 163 and 164 in the B direction based on the viscosity. .
  • the elastic vane 143 is formed in an arc shape with the thickness in the R1 and R2 directions, which is also the circumferential direction R, gradually decreasing from the outer peripheral surface 104 toward the inner peripheral surface 102.
  • the base 167 connected to the body 107 is gradually thinned from the free end 166 having the arcuate convex surface 165.
  • the viscous fluid 105 passing through the pair of wedge spaces 163 and 164 passes through the pair of wedge spaces 164 and 163 narrowed from the other chamber 147 to the one chamber 146 in the rotation of the rotating body 107 with respect to the container 103 in the R1 direction. And a large flow resistance against the rotation in the R1 direction is generated while being defined by the narrowed pair of wedge spaces 164 and 163. In the rotation in the R2 direction, it flows through the pair of wedge spaces 163 and 164 expanded from the one chamber 146 to the other chamber 147 and is defined by the expanded pair of wedge spaces 163 and 164 and in the R2 direction. A small flow resistance that resists rotation is generated.
  • the elastic vane 144 that partitions the chamber 145 and the chamber 148 is formed in the same manner as the elastic vane 143, and the viscous fluid 105 that passes through the pair of wedge spaces 163 and 164 in the elastic vane 144 also elastically moves the elastic vane 144.
  • the width of the pair of wedge spaces 163 and 164 in the B direction is determined by bending the viscosity, and thus the viscous fluid 105 passing through the pair of wedge spaces 163 and 164 in the elastic vane 144 is:
  • the rotation of the rotating body 107 with respect to the container 103 in the R1 direction flows from the other chamber 145 through the pair of wedge spaces 164 and 163 narrowed to the one chamber 148, and the narrowed pair of wedge spaces 164 and 163.
  • the elastic vane 149 that partitions the chamber 141 into two chambers 145 and 146 adjacent to each other in the rotational direction R in cooperation with the elastic vanes 143 and 144 has an arcuate concave surface 171 complementary to the convex surface 161 of the elastic vane 143.
  • a wedge space similar to the pair of wedge spaces 163 and 164 is formed between the outer circumferential surface 104 and the arcuate surface 174 of the tongue 175 having a radius of curvature larger than that of the outer peripheral surface 104.
  • the elastic vane 149 that forms a wedge space similar to the pair of wedge spaces 163 and 164 on the arcuate surface 174 of the tongue 175 is a rotating body with respect to the container 103, similar to the elastic vane 143.
  • the relative rotation of the rotating body 107 in the R1 direction allows the viscous fluid 105 to flow from the chamber 145 to the chamber 146 through the pair of wedge spaces with a large resistance, while the relative rotation of the rotating body 107 in the R2 direction with respect to the container 103.
  • the rotation allows the viscous fluid 105 to flow from the chamber 146 to the chamber 145 with a small resistance.
  • the elastic vane 150 that divides the chamber 142 into two chambers 147 and 148 adjacent to each other in the rotation direction R in cooperation with the elastic vanes 143 and 144 is formed in the same manner as the elastic vane 149, and the outer peripheral surface 104 of the rotating body 107.
  • the elastic vane 150 that forms a pair of wedge spaces between the tongue 175 and the arcuate surface 174 of the tongue 175 is similar to the elastic vane 149 in the relative rotation of the rotating body 107 with respect to the container 103 in the R1 direction.
  • the viscous fluid 105 is allowed to flow from the chamber 147 to the chamber 148 through the wedge space with a large resistance, while the relative rotation of the rotating body 107 with respect to the container 103 in the R2 direction causes the viscous fluid from the chamber 148 to the chamber 147. 105 is allowed to flow with a small resistance.
  • One end surface in the A direction of the elastic vanes 143 and 144 is in close contact with the side surface 125 of the flange portion 119 so as to be slidable in the R1 and R2 directions, and the other end surfaces of the elastic vanes 143 and 144 in the A direction are also included.
  • the elastic vanes 149 and 150 are in close contact with the side surface 129 of the plate-like portion 130 so as to be slidable in the R1 and R2 directions, and the base portion 173 is integrally formed on the inner peripheral surface 102 of the cylindrical portion 115.
  • the above rotary damper 101 includes a seat portion 186 fixedly attached to a vehicle body 185 of an automobile, and the seat portion 186 in the R1 and R2 directions centered on the axis O. It is used as a braking mechanism for rotation in the R1 and R2 directions with respect to the seat portion 186 of the backrest portion 187 in the vehicle seat 188 having a backrest portion 187 that is rotatably connected and attached.
  • the rotary damper 101 has a plate-like portion 130 of the lid 122 via a screw 191 inserted through the through holes 127 and 128, and the container 103 is one of the seat portion 186 and the backrest portion 187.
  • the rotating body 107 is fixed to the seat portion 186, while the rotating body 107 is connected to the other of the seat portion 186 and the backrest portion 187 via a rotating shaft 193 in which one end portion 192 is inserted into the hollow portion 135 of the rotating body 107. In this example, it is connected to the backrest portion 187 and used.
  • the rotating shaft 193 having the other end fixed to the backrest portion 187 is connected to the rotating body 107 with the unevenness (serration) 194 provided on the one end portion 192 fitted into the unevenness 137 of the rotating body 107.
  • the rotating body 107 connected to the backrest portion 187 via the rotation shaft 193 and, more specifically, the unevenness 137 and the unevenness 194 of the rotation shaft 193 fitted to the unevenness 137 is the R1 of the rotation shaft 193.
  • the rotation body 107 is connected to and fixed to the backrest portion 187 in this manner.
  • the rotation body 107 is rotated in the same direction by the rotation of the backrest portion 187 in the R1 and R2 directions.
  • a vehicle seat 188 that includes a seat 186 attached to a vehicle body 185 and a backrest 187 that is rotatably connected to the seat 186
  • the backrest portion 187 rotates in the R1 direction by unlocking the lock mechanism at the rotational position (corresponding to the initial rotational position P0) of the rotating body 107 shown in FIG.
  • each of the pair 149 and 150 includes a pair of wedge spaces 163 and 164 in which the tongue 175 side approaches the outer peripheral surface 104 of the rotating body 107.
  • the viscous fluid 105 passes through each pair of wedge spaces including the reduced pair of wedge spaces 163 and 164.
  • a relatively large flow of viscous fluid 105 flows from each of 145 and 147 to each of chambers 148 and 146 and to each of chambers 146 and 148 and through each pair of wedge spaces including the reduced wedge spaces 163 and 164.
  • a large amount of braking is applied to the rotation of the rotating body 107 in the R1 direction to slowly rotate the backrest 187 in the same direction to the folding rotation position P1, while the rotation position of the rotating body 107 shown in FIG. 18 (to the folding rotation position P1).
  • the backrest 187 is manually rotated in the R2 direction to enlarge the chambers 145 and 147, while the chamber 146 and
  • viscous fluid is applied to the curved convex surfaces 161 of the elastic vanes 143 and 144 and the concave surfaces 171 of the elastic vanes 149 and 150. Since the pressure of 105 is applied, the free end portions 166 side of the elastic vanes 143 and 144 are from the inner peripheral surface 102 of the housing body 103, and the tongue portions 175 of the elastic vanes 149 and 150 are from the outer peripheral surface 104 of the rotating body 107.
  • the viscous fluid 105 is expanded to a pair of wedge spaces.
  • each pair of wedge spaces, including 163 and 164 from chambers 146 and 148, respectively, to chambers 147 and 145 and chamber 145 and 147, and a small braking force due to a relatively small flow resistance of the viscous fluid 105 passing through each of the pair of wedge spaces including the expanded pair of wedge spaces 163 and 164 causes rotation of the rotating body 107 in the R2 direction.
  • the backrest 187 is rotated to the initial rotation position P0 by a small manual force.
  • a large flow resistance can be generated in the viscous fluid 105 by the vane means 108.
  • the backrest portion A moderate resistance can be given to the rotation in the direction toward the folding rotation position P1 of 187, and collision of the backrest portion 187 at the folding rotation position P1 can be avoided, while the backrest portion 187 is manually moved from the folding rotation position P1. It can be easily rotated to the initial rotation position P0.
  • the viscous fluid 105 whose viscosity decreases as the temperature rises includes each pair of wedges including a pair of wedge spaces 163 and 164 when the rotating body 107 rotates in the R1 and R2 directions.
  • the viscous fluid 105 whose viscosity has increased from the normal temperature at low temperature passes through the wedge spaces 163 and 164 because it passes through the space, the viscous fluid 105 in the wedge spaces 163 and 164 is used.
  • the elastic vane 143 is greatly deformed so that the free end 166 side of the elastic vane 143 is further away from the inner peripheral surface 102 of the container 103 than at normal temperature, and the wedge spaces 163 and 164 are compared with those at normal temperature.
  • the flow resistance increases due to the increase in viscosity of the viscous fluid 105 itself and the flow due to the expansion of the wedge spaces 163 and 164 Due to the reduction in resistance, braking at normal temperature can be maintained despite the low temperature, while when the viscous fluid 105 having a lower viscosity than normal temperature at high temperature passes through the wedge spaces 163 and 164, the wedge space 163 and Due to the pressure reduction of the viscous fluid at 164, the elastic vane 143 is elastically deformed slightly so that the free end 166 side of the elastic vane 143 approaches the inner peripheral surface 102 of the container 103 from the normal temperature, and the wedge spaces 163 and 164 are narrowed.
  • the backrest 187 is folded and reliably rotated to the rotational position P1.
  • the backrest 187 can rotate back to its initial rotational position P0 by a predetermined small manual force it is possible to.
  • the vane means 108 of the rotary damper 101 described above has two pairs of elastic vanes 143 and 144, and 149 and 150.
  • the rotary damper of the present invention includes a pair of elastic vanes 143 and 144 and an elastic vane 149 or 150, or three or more pairs of elastic vanes, and the rotary damper 101 rotates with the arcuate surface 174 of each tongue 175 of the elastic vanes 149 and 150.
  • a pair of wedge spaces are formed between the outer peripheral surface 104 of the body 107 and the arcuate surface 174 of each tongue 175 of the elastic vanes 149 and 150 and the outer peripheral surface 104 of the rotating body 107 are R1. Further, the pair of wedge spaces may be prevented from being brought into frictional contact with each other so as to be slidable in the R2 direction.

Landscapes

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

Abstract

L'invention porte sur un amortisseur rotatif (1) qui comporte un corps de confinement en résine synthétique (4), le corps de confinement (4) étant destiné à contenir, à l'intérieur (2) de celui-ci, un fluide visqueux (3) constitué d’huile de silicone et présentant une viscosité qui diminue avec l'augmentation de la température, et qui comporte également un corps de rotation en résine synthétique (9), disposé à l'intérieur (2) du corps de confinement (4) de façon à pouvoir tourner librement, c'est-à-dire de façon à pouvoir tourner dans les directions R1 et R2 autour de l'axe (O) et séparant, en coopération avec le corps de confinement (4), l'intérieur (2) du corps de confinement (4) en au moins deux chambres, qui sont, dans ce mode de réalisation, deux chambres (5, 6) et deux chambres (7, 8).
PCT/JP2009/006206 2008-11-20 2009-11-18 Amortisseur rotatif WO2010058575A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09827356.8A EP2348228A4 (fr) 2008-11-20 2009-11-18 Amortisseur rotatif
CN200980146728.2A CN102216644B (zh) 2008-11-20 2009-11-18 旋转式阻尼器
US13/129,655 US8757337B2 (en) 2008-11-20 2009-11-18 Rotary damper
US14/027,881 US9163692B2 (en) 2008-11-20 2013-09-16 Rotary damper

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2008297376A JP5217952B2 (ja) 2008-11-20 2008-11-20 ロータリダンパ
JP2008-297376 2008-11-20
JP2009-062102 2009-03-13
JP2009062102A JP5212197B2 (ja) 2009-03-13 2009-03-13 ロータリダンパ

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US13/129,655 A-371-Of-International US8757337B2 (en) 2008-11-20 2009-11-18 Rotary damper
US14/027,881 Division US9163692B2 (en) 2008-11-20 2013-09-16 Rotary damper

Publications (1)

Publication Number Publication Date
WO2010058575A1 true WO2010058575A1 (fr) 2010-05-27

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PCT/JP2009/006206 WO2010058575A1 (fr) 2008-11-20 2009-11-18 Amortisseur rotatif

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Country Link
US (2) US8757337B2 (fr)
EP (1) EP2348228A4 (fr)
CN (1) CN102216644B (fr)
WO (1) WO2010058575A1 (fr)

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CN102216644B (zh) 2008-11-20 2014-02-05 奥依列斯工业株式会社 旋转式阻尼器
JP5519433B2 (ja) * 2010-01-25 2014-06-11 株式会社ニフコ ダンパー
EP2482143A1 (fr) * 2011-01-26 2012-08-01 Nivarox-FAR S.A. Assemblage par blocage à cliquet
US8899390B2 (en) * 2012-02-14 2014-12-02 C&D Zodiac, Inc. Freewheeling rotary damping mechanism
US9371674B2 (en) * 2012-03-26 2016-06-21 Itt Manufacturing Enterprises Llc Rotary hydraulic damper for pivoting stowage bin
EP2767191A1 (fr) 2013-02-15 2014-08-20 Hl Display Ab Dispositif d'alimentation pour présenter des produits sur une étagère
JP5629357B1 (ja) * 2013-06-21 2014-11-19 ナシモト工業株式会社 作業装置
US9800107B2 (en) * 2014-10-20 2017-10-24 Hyundai Mobis Co., Ltd. Rotor
JP1536916S (fr) * 2015-04-24 2015-11-02
JP1550670S (fr) * 2015-05-20 2016-05-30
US10822841B2 (en) * 2016-08-24 2020-11-03 Accurate Lock & Hardware Co. Llc Door latch with delayed return mechanism
CN108317208B (zh) * 2018-04-12 2024-06-04 广东东箭汽车科技股份有限公司 一种液压阻尼器和电动撑杆

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Also Published As

Publication number Publication date
EP2348228A4 (fr) 2017-11-22
CN102216644B (zh) 2014-02-05
US20110226573A1 (en) 2011-09-22
US8757337B2 (en) 2014-06-24
US20140014449A1 (en) 2014-01-16
US9163692B2 (en) 2015-10-20
CN102216644A (zh) 2011-10-12
EP2348228A1 (fr) 2011-07-27

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