WO2012137778A1 - Amortisseur - Google Patents

Amortisseur Download PDF

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Publication number
WO2012137778A1
WO2012137778A1 PCT/JP2012/059082 JP2012059082W WO2012137778A1 WO 2012137778 A1 WO2012137778 A1 WO 2012137778A1 JP 2012059082 W JP2012059082 W JP 2012059082W WO 2012137778 A1 WO2012137778 A1 WO 2012137778A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
valve
damper
convex portion
housing
Prior art date
Application number
PCT/JP2012/059082
Other languages
English (en)
Japanese (ja)
Inventor
藍子 稲葉
Original Assignee
株式会社ニフコ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ニフコ filed Critical 株式会社ニフコ
Publication of WO2012137778A1 publication Critical patent/WO2012137778A1/fr

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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
    • F16F9/10—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 damper in which a rotor is rotatably accommodated in a housing filled with a viscous fluid.
  • Patent Document 1 Conventionally, as a damper (buffer device), for example, there is Patent Document 1.
  • a valve body is configured to engage with a ridge formed on a rotating member.
  • the present invention provides a damper capable of improving the assembly workability.
  • a first aspect of the present invention includes a cylindrical housing filled with a viscous fluid, a rotor that is rotatably accommodated in the housing, and converts a rotational force transmitted from the outside into a torque to the viscous fluid;
  • a support mechanism provided on an outer peripheral surface of the rotor; a valve supported by the support mechanism to provide passage resistance to the viscous fluid; a convex portion formed on at least one of the valve and the rotor;
  • a damper having a recess formed on at least the other side of the rotor and holding the valve attached to the rotor by engaging with the projection.
  • the protrusion is formed on at least one of the valve and the rotor, and is formed on at least the other of the valve and the rotor.
  • a flange having a projecting portion projecting radially outward is formed on the outer peripheral surface of the rotor along the circumferential direction. At least one of the convex part and the concave part may be formed on the part.
  • the flange having the protruding portion protruding radially outward is formed along the circumferential direction on the outer peripheral surface of the rotor, and at least one of the convex portion and the concave portion is formed on the protruding portion.
  • the recess is a through hole formed in the protruding portion, and an opening width of the peripheral portion of the through hole is changed by elastic deformation.
  • the opening part in which the said convex part can be inserted may be provided.
  • the opening width of the opening provided in the peripheral portion of the through hole formed in the protruding portion is changed by elastic deformation, so that the convex portion can be easily engaged with the through hole. For this reason, the assembly workability is further improved.
  • either one of the convex portion and the concave portion may be formed in the support mechanism.
  • the convex portion or the concave portion is formed in the support mechanism that supports the valve, the convex portion and the concave portion are easily engaged by supporting the valve by the support mechanism. As a result, the assembly workability is further improved.
  • a pair of the flanges may be formed across the valve in the second aspect or the third aspect of the present invention.
  • the valve is engaged with the rotor while being sandwiched between the pair of flanges. For this reason, when the rotor is inserted into the housing, the protrusions of the pair of flanges formed on the rotor can prevent the valve from interfering with other members, so that the assembly workability is further improved.
  • the valve can be attached to the rotor even when the valve is turned upside down with respect to the rotor, the assembling property of the valve can be improved, and the valve can be diverted to reduce the cost.
  • the first aspect of the present invention has the above-described configuration, the assembly workability can be improved.
  • the assembly workability can be further improved.
  • the assembly workability can be further improved.
  • the fourth aspect of the present invention has the above-described configuration, the assembly workability can be further improved.
  • the assembly workability can be further improved. Further, the assembling property of the valve is improved and the cost can be reduced.
  • FIG. 3 is a cross-sectional view taken along a line 3-3 in FIG. 2.
  • FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG.
  • FIG. 3 is a cross-sectional view taken along a line 3-3 in FIG. 2.
  • FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG.
  • FIG. 3 is a cross-sectional view taken along a line 3-3 in FIG. 2.
  • FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG.
  • the damper 10 of the present embodiment includes a cylindrical housing 12.
  • a bottom wall 12 ⁇ / b> A is formed at one end of the housing 12, and a cap 14 is attached to the other end of the housing 12.
  • the housing 12 is filled with a viscous fluid such as silicone oil, and a rotor 18 is provided for changing the rotational force transmitted from the outside into a torque composed of a compression resistance to the viscous fluid.
  • a cylindrical portion 16 is formed at the center of the bottom wall 12 ⁇ / b> A of the housing 12 so as to protrude along the axis of the housing 12 inside the housing 12.
  • a rotating shaft (not shown) can be inserted into the cylindrical portion 16.
  • an O-ring 17 is mounted between the tip of the cylindrical portion 16 of the housing 12 and the rotor 18, and the viscous fluid does not leak by sealing between the housing 12 and the rotor 18. I am doing so. Further, an O-ring 19 is mounted between the rotor 18 and the cap 14, and the gap between the cap 14 and the rotor 18 is sealed so that viscous fluid does not leak.
  • a flange 20 is formed in a ring shape along the circumferential direction at an axially intermediate portion of the outer circumferential surface 18 ⁇ / b> A of the rotor 18.
  • a pair of projecting portions 22 projecting outward in the radial direction of the rotor 18 are formed on the outer peripheral portion of the flange 20 at positions spaced apart by 180 ° along the circumferential direction, and are attached to the rotor 18.
  • the valve 30 slightly protrudes outward of each rotor 22 in the radial direction of the rotor 18.
  • a through hole 24 (a concave portion engaging with the convex portion) as a concave portion that engages with the convex portion passes through the projecting portion 22 in parallel with the axial direction of the rotor 18. It is a long hole along the circumferential direction.
  • the valve 30 is disposed inside the housing 12 in a state of being supported by the support protrusions 26, and gives passage resistance to the viscous fluid.
  • a stopper 31 protrudes from the inner peripheral surface 12B of the housing 12 at a position spaced 180 ° along the circumferential direction, and the stopper 31 comes into contact with the support protrusion 26.
  • the valve 30 rotates together with the rotor 18 in the arrow CW direction (clockwise direction) in FIG. 3
  • the viscous fluid passes through a slight gap S1 between the valve 30 and the inner peripheral surface 12B of the housing 12.
  • the passage resistance (viscous resistance) due to the viscous fluid can be increased, and the torque applied to the rotor 18 can be increased.
  • the valve 30 is formed in a block shape having an outer peripheral wall 30A, an inner peripheral wall 30B, an upper wall 30C on the flange 20 side, a lower wall 30D, and both side walls 30E, 30F.
  • the outer peripheral wall 30 ⁇ / b> A of the valve 30 is a curved surface along the inner peripheral surface 12 ⁇ / b> B of the housing 12, and the inner peripheral wall 30 ⁇ / b> B is a flat surface along the pedestal portion 26 ⁇ / b> A of the support protrusion 26.
  • the upper wall 30 ⁇ / b> C of the valve 30 faces the lower surface 20 ⁇ / b> A of the flange 20, and the lower wall 30 ⁇ / b> D of the valve 30 faces the bottom wall 12 ⁇ / b> A of the housing 12.
  • the protrusion 22 of the flange 20 of the rotor 18 covers the upper wall 30C of the valve 30.
  • a recess 32 is formed in the inner peripheral wall 30B of the valve 30 along the longitudinal direction of the valve 30. A portion of the support protrusion 26 protruding from the base portion 26A can be inserted into the recess 32. Yes. Moreover, the recessed part 32 is provided with the notch part 34 which penetrates one side wall 30E, and the notch part 36 which penetrates the other side wall 30F.
  • a convex portion 40 is formed on the upper wall 30 ⁇ / b> C of the bulb 30 so as to be inserted into the through hole 24. Further, when the valve 30 is pressed against the support protrusion 26 in the axial direction of the rotor 18 (the direction of arrow A in FIG. 6), the convex portion 40 is elastically deformed in a direction to be crushed once, and then returned to the rotor 18. It engages with a through hole 24 formed in the protrusion 22 of the flange 20. Therefore, as shown in FIG. 7, the pair of valves 30 can be held in a state of being attached to the rotor 18.
  • a flange 20 is formed in a ring shape along the circumferential direction at an axially intermediate portion of the outer circumferential surface 18A of the rotor 18, and the outer circumferential portion of the flange 20 extends along the circumferential direction.
  • a pair of projecting portions 22 projecting outward in the radial direction are formed at positions spaced apart by 180 °.
  • through holes 24 are formed in these protruding portions 22.
  • a convex portion 40 is formed on the upper wall 30C of the bulb 30 so as to protrude.
  • the pair of valves 30 can be held in a state of being attached to the rotor 18.
  • the operator can insert the rotor 18 assembled with the valve 30 into the housing 12 without holding the valve 30, and the inner peripheral surface 12B of the housing 12 and the outer periphery of the rotor 18 can be inserted.
  • the valve 30 can be easily assembled between the support protrusion 26 as a support mechanism protruding from the surface 18A. For this reason, the assembly workability
  • the through hole 24 formed in the protruding portion 22 of the flange 20 of the rotor 18 and the convex portion 40 formed on the upper wall 30C of the valve 30 are engaged with each other, so that the valve 30 Can be kept attached to the rotor 18. For this reason, assembly workability
  • operativity can be improved with a simple structure.
  • the protrusion 22 of the flange 20 of the rotor 18 covers the upper wall 30 ⁇ / b> C of the valve 30 with the valve 30 attached to the rotor 18. For this reason, when inserting the rotor 18 in the housing 12, it can prevent that the valve
  • a convex portion is formed on the protruding portion 22 of the flange 20 of the rotor 18, and a concave portion that engages with the convex portion is formed on the upper wall 30 ⁇ / b> C of the valve 30. It is good also as a structure which can hold
  • an opening 50 in which the opening width W ⁇ b> 1 changes due to elastic deformation is formed in the outer peripheral side peripheral portion of the through hole 24 formed in the protruding portion 22 of the rotor 18.
  • the opening width W1 of the opening 50 expands due to elastic deformation and then returns to its original state, so that it can be engaged with the convex portion 40 formed on the upper wall 30C of the valve 30.
  • Both end portions 50A in the width direction of the opening 50 are inclined surfaces that are inclined in a direction in which the opening width becomes narrower toward the inside of the opening.
  • the convex portion 40 has a trapezoidal shape in which the width of the insertion side 40A is narrower than the width of the non-insertion side 40B, and both side surfaces 40C are inclined surfaces along both widthwise end portions 50A of the opening 50.
  • the valve 30 when the valve 30 is assembled to the rotor 18, if the valve 30 is pressed against the support protrusion 26 in the axial direction of the rotor 18 (the direction of arrow A in FIG. 8), the width of the opening 50. Both end portions 50A in the direction and both side surfaces 40C of the convex portion 40 slide, the opening 50 is easily expanded, and the through hole 24 and the convex portion 40 are easily engaged. For this reason, the force which presses the valve
  • a third embodiment of the damper of the present invention will be described with reference to FIG.
  • symbol is attached
  • a convex portion 54 is formed on the upper wall 26 ⁇ / b> B of the support protrusion 26 of the rotor 18.
  • a concave portion 56 (a concave portion that engages with the convex portion) is formed on the lower surface of the upper wall 30C of the valve 30, and the convex portion 54 of the rotor 18 is formed in the concave portion 56. By engaging, the valve 30 can be held in the rotor 18.
  • the support protrusion 26 of the rotor 18 is inserted into the recess 32 of the valve 30, and the valve 30 is supported by the support protrusion 26.
  • the recess 56 is easily engaged. As a result, the assembly workability is further improved.
  • a concave portion is formed on the upper wall 26B of the support projection 26 of the rotor 18, and a convex portion that engages with the concave portion is formed on the lower surface of the upper wall 30C of the valve 30.
  • the valve 30 may be held.
  • a pair of flanges 20 are formed in a ring shape along the circumferential direction at the intermediate portion in the axial direction of the outer peripheral surface 18 ⁇ / b> A of the rotor 18 with the support protrusion 26 interposed therebetween.
  • a pair of projecting portions 22 projecting outward in the radial direction are formed on the outer peripheral portion of each flange 20 at positions facing each other that are separated by 180 ° along the circumferential direction. It protrudes slightly outward from the attached valve 30 in the radial direction of the rotor 18.
  • each protrusion 22 formed in the pair of flanges 20 is formed with a through hole 24 as a recess.
  • the valve 30 is engaged with the rotor 18 with the pair of flanges 20 being sandwiched, and the protrusion 22 covers the upper wall 30C and the lower wall 30D of the valve 30. For this reason, when inserting the rotor 18 in the housing 12, it can further prevent that the valve
  • valve 30 when it is desired that the damper 10 has torque in the reverse rotation direction, the valve 30 can be attached to the rotor 18 with the valve 30 turned upside down with respect to the rotor 18. For this reason, the valve 30 can be diverted.
  • the present invention has been described in detail with respect to specific embodiments. However, the present invention is not limited to the above embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.
  • the support mechanism provided on the outer peripheral surface of the rotor is not limited to the support protrusion 26, and may be another support mechanism such as a recess corresponding to the protrusion formed on the valve 30.
  • the shape of the support protrusion 26 and the shape of the valve 30 are not limited to the shapes of the above embodiments.
  • the recess that engages with the protrusion may have a configuration other than the through hole 24 and the recess 56. Moreover, it is also possible to combine said each embodiment suitably.

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

Abstract

L'invention porte sur un amortisseur. Une collerette (20) est formée en saillie sur le rotor (18) d'un amortisseur (10) et des saillies (22) sont formées sur la périphérie extérieure de la collerette (20). Des trous débouchants (24) sont formés dans les saillies (22). Des saillies (40) sont formées sur les parois supérieures (30c) de soupape (30) qui sont en prise avec les saillies supports (26) du rotor (18). Dans l'assemblage d'un amortisseur, lorsque les soupapes (30) sont pressées dans la direction allant vers les saillies supports (26), c'est-à-dire dans la direction allant vers l'axe du rotor (18), les saillies (40) sont tout d'abord élastiquement déformées vers le bas et elles reviennent ensuite à la forme initiale. Le résultat est que les saillies (40) des soupapes (30) sont en contact avec les trous débouchants (24) formés dans les saillies (22) de la collerette (20) du rotor (18).
PCT/JP2012/059082 2011-04-06 2012-04-03 Amortisseur WO2012137778A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-084768 2011-04-06
JP2011084768A JP5738656B2 (ja) 2011-04-06 2011-04-06 ダンパ

Publications (1)

Publication Number Publication Date
WO2012137778A1 true WO2012137778A1 (fr) 2012-10-11

Family

ID=46969174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/059082 WO2012137778A1 (fr) 2011-04-06 2012-04-03 Amortisseur

Country Status (2)

Country Link
JP (1) JP5738656B2 (fr)
WO (1) WO2012137778A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948633A (zh) * 2014-03-31 2015-09-30 日本电产三协株式会社 流体缓冲装置以及带缓冲的设备
CN105179577A (zh) * 2014-06-11 2015-12-23 日本电产三协株式会社 流体缓冲装置以及带缓冲的设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7346132B2 (ja) * 2019-07-29 2023-09-19 ニデックインスツルメンツ株式会社 流体ダンパ装置
JP7336655B2 (ja) * 2020-02-27 2023-09-01 株式会社ソミックマネージメントホールディングス ロータリーダンパ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557168U (fr) * 1978-10-07 1980-04-18
JPH0541499U (ja) * 1991-11-18 1993-06-08 株式会社三協精機製作所 便器等のヒンジ構造
JPH07301272A (ja) * 1994-04-28 1995-11-14 Hitachi Powdered Metals Co Ltd 流体圧ダンパ
JPH09126265A (ja) * 1995-10-31 1997-05-13 Totsuku Bearing Kk 回転ダンパ及び同ダンパを用いた蓋の開閉装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557168U (fr) * 1978-10-07 1980-04-18
JPH0541499U (ja) * 1991-11-18 1993-06-08 株式会社三協精機製作所 便器等のヒンジ構造
JPH07301272A (ja) * 1994-04-28 1995-11-14 Hitachi Powdered Metals Co Ltd 流体圧ダンパ
JPH09126265A (ja) * 1995-10-31 1997-05-13 Totsuku Bearing Kk 回転ダンパ及び同ダンパを用いた蓋の開閉装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948633A (zh) * 2014-03-31 2015-09-30 日本电产三协株式会社 流体缓冲装置以及带缓冲的设备
CN105179577A (zh) * 2014-06-11 2015-12-23 日本电产三协株式会社 流体缓冲装置以及带缓冲的设备

Also Published As

Publication number Publication date
JP2012219875A (ja) 2012-11-12
JP5738656B2 (ja) 2015-06-24

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