WO2021075311A1 - Vibration suppressing device - Google Patents

Vibration suppressing device Download PDF

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Publication number
WO2021075311A1
WO2021075311A1 PCT/JP2020/037844 JP2020037844W WO2021075311A1 WO 2021075311 A1 WO2021075311 A1 WO 2021075311A1 JP 2020037844 W JP2020037844 W JP 2020037844W WO 2021075311 A1 WO2021075311 A1 WO 2021075311A1
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WO
WIPO (PCT)
Prior art keywords
piston
elastic piece
vibration damping
sliding ring
damping device
Prior art date
Application number
PCT/JP2020/037844
Other languages
French (fr)
Japanese (ja)
Inventor
宏 中里
隆浩 青沼
加藤　勉
敦士 曽我部
Original Assignee
株式会社パイオラックス
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
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Application filed by 株式会社パイオラックス filed Critical 株式会社パイオラックス
Publication of WO2021075311A1 publication Critical patent/WO2021075311A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers

Definitions

  • the present invention relates to a vibration damping device that absorbs kinetic energy by moving the piston forward and backward, converts it into heat energy by friction, etc., and attenuates vibration.
  • Patent Document 1 discloses a vibration isolating member using a viscoelastic body.
  • the vibration isolating member includes a plate-shaped upper support and a lower support, a coil spring sandwiched between the upper support and the lower support, and a viscoelastic body arranged inside the coil spring.
  • the vibration damping member disclosed in Patent Document 1 suppresses vibration by pressing the elastic body, the vibration damping performance depends on the size of the elastic body. It is preferable that a small elastic body can be used to exhibit sufficient vibration damping performance.
  • An object of the present invention is to provide a vibration damping device capable of exhibiting sufficient vibration damping performance by using a small elastic body.
  • one aspect of the present invention is a vibration damping device that suppresses vibration of the second member with respect to the first member via the first member and the second member, and the first member and the first member.
  • a fixing portion that is fixed to one of the two members and has a pedestal portion having an insertion hole, a wall portion that stands on the pedestal portion, and a piston that is inserted into the insertion hole and is provided so as to be able to move forward and backward. It is provided with a piston having a contact portion provided so as to be in contact with the other of the first member and the second member, and a sliding ring that slides on the wall portion or the piston according to the advancement and retreat of the piston.
  • the sliding ring has an annular portion arranged between the piston and the wall portion, and an elastic piece protruding radially outward or radially inward from the annular portion. The elastic piece slides on the wall or piston to generate thermal energy.
  • Another aspect of the present invention is also a vibration damping device that is interposed between the first member and the second member to suppress the vibration of the second member with respect to the first member.
  • This vibration damping device is a fixing portion fixed to one of the first member and the second member, and has a pedestal portion having an insertion hole, a fixing portion having a wall portion erected on the pedestal portion, and an insertion hole.
  • the sliding ring has an annular portion arranged between the piston and the wall portion, and an elastic piece protruding radially outward or radially inward from the annular portion.
  • the elastic pieces include a first elastic piece and a second elastic piece extending in opposite directions in the axial direction of the piston.
  • FIG. 7A is a plan view of the sliding ring
  • FIG. 7B is a side view of the sliding ring. It is sectional drawing of the vibration damping device of the 1st modification. It is sectional drawing of the vibration damping device of the 2nd modification.
  • FIG. 14A is a top view of the sliding ring of the fourth embodiment
  • FIG. 14B is a side view of the sliding ring of the fourth embodiment
  • 15 (a) is a cross-sectional view taken along the line segment AA of the sliding ring shown in FIG. 14 (a)
  • FIG. 15 (b) is a line segment B-of the sliding ring shown in FIG. 14 (a). It is a cross-sectional view of B.
  • FIG. 18A is a top view of the sliding ring of the fifth embodiment
  • FIG. 18B is a side view of the sliding ring of the fifth embodiment
  • 19 (a) is a cross-sectional view taken along the line segment CC of the sliding ring shown in FIG. 18 (a)
  • FIG. 19 (b) is a line segment D- of the sliding ring shown in FIG. 18 (a).
  • 20 (a) is a perspective view of the sliding ring of the sixth embodiment
  • FIG. 20 (b) is a sectional view taken along line EE of the sliding ring shown in FIG. 20 (a).
  • 21 (a) is a perspective view of the sliding ring of the seventh embodiment
  • FIG. 21 (b) is a cross-sectional view of the line segment FF of the sliding ring shown in FIG. 21 (a).
  • FIG. 1 is a perspective view of the vibration damping device 10 of the first embodiment.
  • FIG. 1A is a vibration damping device 10 viewed from diagonally above
  • FIG. 1B is a vibration damping device 10 viewed from diagonally below.
  • the vibration damping device 10 is fixed to an opening / closing body such as a vehicle door and a back door, and comes into contact with a panel on the vehicle body side in a state where the opening / closing body is closed.
  • the vibration damping device 10 absorbs the impact when the opening / closing body is closed, suppresses the vibration of the opening / closing body when the opening / closing body is closed, and suppresses the generation of unpleasant noise due to the resonance of the opening / closing body.
  • the vibration damping device 10 may be fixed to a fixed body such as a panel on the vehicle body side and abut on the opening / closing body. That is, the vibration damping device 10 is fixed to one of the opening / closing body and the fixed body, and can come into contact with the other of the opening / closing body and the fixed body. Further, the vibration damping device 10 is not limited to the mode of being fixed to the opening / closing body, and may be provided on the fixed body. In any case, the vibration damping device 10 intervenes between the first member and the second member to suppress the vibration of the second member with respect to the first member.
  • the vibration damping device 10 includes a fixing portion 20 fixed to one of the first member and the second member, and a cover 22 capable of contacting the other of the first member and the second member.
  • the fixing portion 20 is inserted into a mounting hole provided in the door of the vehicle and fixed.
  • FIG. 2 is an exploded view of the vibration damping device 10. Further, FIG. 3 is a cross-sectional view of the vibration damping device 10.
  • the vibration damping device 10 includes a fixing portion 20, a cover 22, a piston 24, a sliding ring 26, and a coil spring 28.
  • the fixing portion 20 has a pedestal portion 30, a wall portion 32, a tubular portion 36, an elastic locking portion 38, and an insertion hole 40.
  • the insertion hole 40 is formed so as to penetrate the fixing portion 20 and allows the piston 24 to be inserted.
  • the pedestal portion 30 is formed in a plate shape and has an insertion hole 40 in the center.
  • An annular protrusion 66 is formed at the edge of the insertion hole 40 of the pedestal portion 30 to guide the advance / retreat of the piston 24.
  • the wall portion 32 is erected from the pedestal portion 30 and is formed in a tubular shape.
  • the tubular portion 36 hangs down from the pedestal portion 30, and a pair of elastic locking portions 38 are formed on the side surface of the tubular portion 36 and extend toward the pedestal portion 30.
  • the tubular portion 36 is inserted into a mounting hole formed in the door, and the elastic locking portion 38 is locked to the edge of the mounting hole, whereby the fixing portion 20 is fixed to the door.
  • the method of fixing to the door is not limited to the shapes of the tubular portion 36 and the elastic locking portion 38, and other shapes may be used as long as they can be fixed to the panel.
  • the lower surface of the pedestal portion 30 may be adhered or welded to the panel.
  • the piston 24 is inserted into the insertion hole 40 of the fixing portion 20.
  • the piston 24 has a flange portion 46, a shaft portion 48, a retaining portion 50, a diameter reduction portion 52, a recess 54, and a limiting portion 64.
  • the flange portion 46 is located at one end of the piston 24 and is formed in a disk shape so as to project outward in the radial direction.
  • the recess 54 is formed by being recessed in the center of one end surface of the piston 24.
  • the shaft portion 48 is connected to the flange portion 46 and is formed in a columnar shape.
  • the shaft portion 48 includes a large diameter portion 48a located on the flange portion 46 side, a small diameter portion 48b located on the pedestal portion 30 side, a limiting portion 64 formed on the large diameter portion 48a, and a large diameter portion 48a and a small diameter portion. It has a reduced diameter portion 52 located at the boundary of 48b.
  • the large diameter portion 48a is surrounded by the sliding ring 26, and the pair of limiting portions 64 restricts the axial movement of the sliding ring 26.
  • the pair of limiting portions 64 are formed in the annular groove formed in the large diameter portion 48a.
  • the small diameter portion 48b is formed to have a smaller diameter than the large diameter portion 48a, and is inserted into the insertion hole 40 of the pedestal portion 30.
  • the fixing portion 20 through which the small diameter portion 48b is inserted can be miniaturized.
  • the diameter of the sliding ring 26 can be made larger than that in the case where the sliding ring 26 is arranged in the small diameter portion 48b, and the sliding ring 26 can be stably brought into contact with the wall portion 32.
  • the retaining portion 50 is located on the other end side of the piston 24 and is formed so as to project on the outer peripheral surface of the shaft portion 48.
  • the retaining portion 50 is hooked on the edge of the insertion hole 40 of the pedestal portion 30 to prevent the piston 24 from coming off from the fixing portion 20.
  • the retaining portion 50 is an elastic claw that can bend outward in the radial direction, facilitating the attachment of the shaft portion 48.
  • the sliding ring 26 has an annular portion 42 and a first elastic piece 44a and a second elastic piece 44b (when these are not distinguished, they are referred to as "elastic piece 44").
  • the sliding ring 26 is formed of a viscoelastic material, and is preferably formed of, for example, ethylene propylene diene rubber and a 4-methyl-1-pentene / ⁇ -olefin copolymer. Of course, the sliding ring 26 may be made of another viscoelastic material.
  • the annular portion 42 is formed in a cylindrical shape and surrounds the large diameter portion 48a of the piston 24 as shown in FIG.
  • the first elastic piece 44a and the second elastic piece 44b project radially outward from the center position of the outer peripheral surface of the annular portion 42, are formed in an annular shape, are formed so as to separate in the axial direction of the piston 24, and are formed at the tip thereof. It is formed so as to move away from each other.
  • the pair of elastic pieces 44 extend in opposite directions in the axial direction of the piston 24 and elastically contact the inner peripheral surface of the wall portion 32.
  • the coil spring 28 urges the piston 24 in a direction away from the pedestal portion 30 of the fixing portion 20, and generates a reaction force when the piston 24 is pushed in.
  • the cover 22 is made of a rubber material and is formed in a cup shape to cover the piston 24, the sliding ring 26, and the coil spring 28.
  • the cover 22 has a contact portion 56, an umbrella-shaped portion 58, a fitting portion 60, and a convex portion 62.
  • the contact portion 56 is located on the end surface of the cover 22 and can contact the panel on the vehicle body side.
  • the umbrella-shaped portion 58 is in contact with the surface of the door in a fixed state to suppress rattling of the vibration damping device 10.
  • the fitting portion 60 is formed in a groove shape and fits on the outer peripheral edge of the pedestal portion 30.
  • the convex portion 62 is formed in a protruding shape at the center position of the back surface of the contact portion 56, and engages with the concave portion 54 of the piston 24.
  • the retaining portion 50 of the piston 24 is caught by the pedestal portion 30 due to the urging of the coil spring 28.
  • the advance of the piston 24 is restricted, and when the flange portion 46 comes into contact with the wall portion 32, the regression of the piston 24 is restricted.
  • the flange portion 46 is axially separated from the tip of the wall portion 32, and the piston 24 can advance and retreat in the axial direction by the distance.
  • the vibration damping device 10 When the fixing portion 20 is fixed to the door and the door is closed, the contact portion 56 of the cover 22 is in contact with the panel on the vehicle body side.
  • the distance between the door and the vehicle body side panel changes, and the piston 24 moves forward and backward according to the relative displacement.
  • the movement of the sliding ring 26 in the axial direction is restricted by the piston 24, and when the piston 24 moves forward and backward, a relative displacement occurs between the sliding ring 26 and the wall portion 32, and the sliding ring 26 slides on the wall portion 32. That is, the sliding ring 26 slides on the wall portion 32 according to the advance / retreat of the piston 24.
  • the elastic piece 44 slides on the wall portion 32, frictional heat is generated, and the vibration energy of the piston 24 is converted into heat energy, so that vibration can be suppressed.
  • the elastic piece 44 projects outward in the radial direction, the state of being in contact with the wall portion 32 can be maintained, and friction can be stably generated when the piston 24 moves forward and backward. Further, since the elastic pieces 44 are separated in the axial direction to form a pair, friction can be generated at two places, and even if the piston 24 is tilted, the contact of one of the elastic pieces 44 can be maintained. .. Further, since the pair of elastic pieces 44 are separated in the axial direction, the contact with the wall portion 32 can be stably maintained both when the piston 24 is moving and when the piston 24 is moving backward.
  • FIG. 4 is an exploded view of the vibration damping device 100 of the second embodiment.
  • FIG. 5 is a cross-sectional view of the vibration damping device 100 of the second embodiment.
  • the vibration damping device 100 includes a fixing portion 20, a cover 22, a piston 24, a sliding ring 126, and a coil spring 28.
  • the vibration damping device 100 of the second embodiment has the same component configuration as the vibration damping device 10 shown in FIG. 2, but the shape of the sliding ring 126 is different.
  • FIG. 6 is a perspective view of the piston 24 with the sliding ring 126 attached.
  • FIG. 7A is a plan view of the sliding ring 126, and
  • FIG. 7B is a side view of the sliding ring 126.
  • the sliding ring 126 has an annular portion 142, a first elastic piece 144a, and a second elastic piece 144b.
  • the sliding ring 126 is made of a viscoelastic material and is formed in a cylindrical shape and is flexible.
  • the first elastic piece 144a and the second elastic piece 144b (when these are not distinguished, they are referred to as "elastic piece 144") project radially outward from the annular portion 142 and extend in opposite directions in the axial direction of the piston 124. To do.
  • a plurality of elastic pieces 144 are provided so as to be separated from each other in the circumferential direction.
  • the elastic piece 144 is easily bent, and even when the piston 124 is tilted, the state in which one of the elastic pieces 144 is in contact with the wall portion 132 can be maintained.
  • the elastic piece 144 to be elastically contacted with each surface of the wall portion 132 can be easily formed.
  • the first elastic piece 144a and the second elastic piece 144b are alternately arranged in the circumferential direction, and a plurality of each is formed.
  • the elastic piece 144 of the sliding ring 126 slides on the wall portion 32 according to the advancement and retreat of the piston 24, and thermal energy can be generated by this sliding to suppress vibration.
  • the first elastic piece 144a and the second elastic piece 144b can stably maintain a contact state when the piston 124 advances and retracts.
  • FIG. 8 is a cross-sectional view of the vibration damping device 200 of the first modification.
  • the vibration damping device 200 of the modified example has a different shape of the wall portion 232 of the fixing portion 220 as compared with the vibration damping device 100 shown in FIG.
  • the wall portion 232 is erected from the pedestal portion 130 and is formed in a cylindrical shape.
  • the wall portion 232 surrounds the piston 124, and the inner wall surface of the wall portion 232 faces the outer peripheral surface of the piston 124.
  • the inner wall surface of the wall portion 232 has a first parallel surface 232a, an inclined surface 232b, and a second parallel surface 232c in order from the tip end side.
  • the first parallel surface 232a and the second parallel surface 232c are formed parallel to each other in the axial direction, and are formed so that the distance between the inner wall surfaces, that is, the inner diameter is constant.
  • the inclined surface 232b is formed so as to be inclined in the axial direction so that the distance between the inner wall surfaces becomes smaller toward the pedestal portion 130.
  • the elastic piece 144 of the sliding ring 126 is in contact with the first parallel surface 232a.
  • the elastic piece 144 slides on the first parallel surface 232a, then contacts the inclined surface 232b, and slides on the inclined surface 232b. Since the distance between the inclined surfaces 232b becomes narrow when the piston 124 regresses, the frictional force between the elastic piece 144 and the inclined surface 232b can be set to be high. Further, even if the sliding ring 126 is strained, it is possible to prevent the strain from affecting the advance / retreat of the piston 124 when sliding on the inclined surface 232b.
  • the second parallel surface 232c is located on the pedestal portion 130 side of the inclined surface 232b, can guide the advance / retreat of the piston 124, and can suppress the inclination of the piston 124.
  • FIG. 9 is a cross-sectional view of the vibration damping device 300 of the second modified example.
  • the cross section of the vibration damping device 300 shown in FIG. 9 is the position of the line segment AA of the vibration damping device 200 shown in FIG.
  • the vibration damping device 300 of the second modification is different from the vibration damping device 100 shown in FIG. 5 in the shape of the wall portion 332 of the fixed portion 320.
  • a plurality of projecting portions 70 arranged apart from each other in the circumferential direction are formed on the inner peripheral surface of the wall portion 332.
  • the protrusion 70 is formed in a rib shape so as to extend along the axial direction.
  • the plurality of projecting portions 70 are positioned so as to be offset from the plurality of elastic pieces 144 in the circumferential direction. That is, the plurality of protrusions 70 are located in the gaps between the plurality of elastic pieces 144.
  • the protruding portion 70 is provided so as to be able to come into contact with the piston 124 when the piston 124 is tilted, and can stabilize the advance / retreat of the piston 124 and the bullet contact of the elastic piece 144.
  • the plurality of protruding portions 70 may be formed in a rib shape on the outer peripheral surface of the piston 124.
  • FIG. 10 is a cross-sectional view for explaining the sliding ring 426 of the third modification.
  • the sliding ring 426 is held by the limiting portion 64 of the piston 124.
  • the sliding ring 426 has an annular portion 442 and a plurality of elastic pieces 444.
  • the annular portion 442 is formed in a cylindrical shape.
  • the sliding ring 426 has a gap 72 penetrating in the axial direction, and the gap 72 is formed in the double-sided piece so that the elastic piece 444 projects outward in the radial direction.
  • the elastic piece 444 comes into contact with the inner wall surface of the wall portion 132 and slides on the wall portion 132 as the piston 124 advances and retreats, generating frictional energy.
  • FIG. 11 is an exploded view of the vibration damping device 500 of the third embodiment.
  • FIG. 12 is a cross-sectional view of the vibration damping device 500 of the third embodiment.
  • the shape and arrangement of the sliding ring 526 are mainly different from those of the vibration damping device 10 shown in FIG. 3, and the sliding ring 526 is not attached to the piston 524 but to the fixed portion 520. The difference is that they are retained.
  • the fixing portion 520 has a pedestal portion 30, a wall portion 32, a protruding portion 34, a step portion 35, a tubular portion 36, and an elastic locking portion 38.
  • a plurality of protrusions 34 are formed so as to project radially inward from the inner peripheral surface of the wall portion 32 and are separated from each other in the circumferential direction.
  • the protrusion 34 suppresses the inclination of the piston 24 and guides the piston 24 to move forward and backward in the axial direction.
  • the step portion 35 projects radially inward from the inner peripheral surface of the wall portion 32 and is axially separated from the protrusion 34.
  • the protrusion 34 and the step 35 function as a limiting portion that limits the axial movement of the sliding ring 26.
  • the sliding ring 526 has an annular portion 542 and a first elastic piece 544a and a second elastic piece 544b (when these are not distinguished, they are referred to as "elastic piece 544").
  • the annular portion 542 is formed in a cylindrical shape and surrounds the large diameter portion of the piston 524 as shown in FIG.
  • the first elastic piece 544a and the second elastic piece 544b project radially inward from the center position of the inner peripheral surface of the annular portion 542, are formed in an annular shape, and are formed so as to be separated in the axial direction of the piston 524, and the tips thereof. It is formed so as to separate toward.
  • the pair of elastic pieces 544 extend in opposite directions in the axial direction of the piston 524 and elastically contact the outer peripheral surface of the piston 524.
  • the sliding ring 526 is restricted from moving in the axial direction by the fixing portion 520, and slides on the piston 524 according to the advance / retreat of the piston 524.
  • the elastic piece 544 slides on the piston 524, frictional heat is generated, and the vibration energy of the piston 524 is converted into heat energy, so that vibration can be suppressed.
  • a plurality of elastic pieces 544 of the sliding ring 526 may be provided so as to be separated from each other in the circumferential direction. Further, the elastic piece 544 may extend inward in the radial direction from the annular portion 542 and extend in opposite directions in the axial direction of the piston 524.
  • FIG. 13 is a perspective view of the sliding ring 626 of the fourth embodiment.
  • 14 (a) is a top view of the sliding ring 626 of the fourth embodiment
  • FIG. 14 (b) is a side view of the sliding ring 626 of the fourth embodiment.
  • 15 (a) is a sectional view taken along line AA of the sliding ring 626 shown in FIG. 14 (a)
  • FIG. 15 (b) is a sectional view of the sliding ring 626 shown in FIG. 14 (a). It is sectional drawing BB of a line segment.
  • the sliding ring 626 of the fourth embodiment is different from the sliding ring 126 shown in FIG. 6 in that the first elastic piece 644a and the second elastic piece 644b have a connecting portion 82.
  • the sliding ring 626 has an annular portion 642, a first elastic piece 644a and a second elastic piece 644b (when these are not distinguished, they are referred to as "elastic piece 644").
  • the elastic piece 644 has a main body 79, a tip portion 80, a base end portion 81, a connecting portion 82, and an opening portion 83.
  • the elastic piece 644 projects radially outward from the annular portion 642, and the main body 79 of the elastic piece 644 is inclined in the radial direction and extends in the axial direction.
  • the first elastic piece 644a and the second elastic piece 644b extend in opposite directions in the axial direction. As a result, the contact state can be stably maintained when the piston moves forward and backward.
  • the connecting portion 82 connects the tip portion 80 side of the elastic piece 644 and the annular portion 642. That is, both the tip end 80 and the base end 81 of the main body 79 of the elastic piece 644 are connected to the annular portion 642. As a result, the connecting portion 82 can restrict the movement of the tip portion 80, and when the sliding ring 626 is assembled between the piston and the fixing portion, one of the first elastic piece 644a and the second elastic piece 644b is turned over. It is possible to prevent the piston from being assembled in a closed state.
  • the opening 83 is formed at a position overlapping the connecting portion 82 so as to expose the side surface of the connecting portion 82 in the top view shown in FIG. 14A.
  • the opening 83 facilitates the molding of the connecting portion 82. Further, when the sliding ring 626 is assembled between the piston and the fixed portion, the elastic piece 644 can be easily bent by the opening 83 to facilitate the assembly.
  • FIG. 15B shows that the connecting portion 82 protrudes downward in the axial direction from the tip portion 80 of the second elastic piece 644b.
  • the connecting portion 82 protrudes from the tip portion 80 when it is inserted into the wall portion 32 of the fixed portion from the tip portion 80 side, the connecting portion 82 hits the top of the wall portion 32 before the tip portion 80 and bends so as to pull in the tip portion 80. be able to.
  • the elastic piece 644 can be assembled smoothly without turning over.
  • the connecting position 82a between the connecting portion 82 and the annular portion 642 is located closer to the base end portion 81 of the elastic piece 644 than the connecting position 82b between the connecting portion 82 and the elastic piece 644. ing.
  • the connecting portion 82 is tilted, and the connecting portion 82 is easily bent so that the connecting position 82b approaches the annular portion 642. Therefore, the connecting portion 82 is less likely to hinder the movement of the tip portion 80 of the elastic piece 644 approaching the annular portion 642.
  • the connecting portion 82 is inclined and curved in the axial direction and the radial direction.
  • the connecting portion 82 has an inclined portion that is inclined from the tip portion 80 toward the base end portion 81.
  • the connecting portion 82 tends to bend so that the tip portion 80 of the elastic piece 644 approaches the annular portion 642.
  • the connecting portion 82 is formed thinner than the main body 79 of the elastic piece 644, and is more easily bent than the main body 79 of the elastic piece 644. As a result, since the connecting portion 82 bends before the main body 79 of the elastic piece 644, it is difficult to hinder the bending when the main body 79 slides on the wall portion 32, and the vibration damping function of the elastic piece 644 can be easily exerted. ..
  • FIG. 16 is a cross-sectional view of the vibration damping device 600 of the fourth embodiment.
  • the vibration damping device 600 includes a fixing portion 620, a cover 22, a piston 624, and a sliding ring 626.
  • a plurality of elastic claws 640 of the fixing portion 620 are formed so as to project inward in the radial direction from the wall portion 32, and form an insertion hole through which the piston 624 is inserted.
  • the retaining portion 50 formed at the base end of the piston 624 hits the elastic claw 640 to regulate the progress of the piston 624.
  • the sliding ring 626 is attached to the piston 624 and slides on the wall portion 32 of the fixing portion 620 according to the advance / retreat of the piston 624.
  • the tip 80 of the first elastic piece 644a hits the wall 32 and is pushed inward in the radial direction, the connecting portion 82 is deformed so as to be crushed, the tip 80 approaches the annular portion 642, and the first elastic piece 644a is moved. It is bent. As a result, the first elastic piece 644a is pressed against the wall portion 32. Further, the second elastic piece 644b is also pressed against the wall portion 32 in the same manner as the first elastic piece 644a.
  • the tip 80 When the piston 624 starts to move forward and backward, the tip 80 is initially caught by the wall 32 and the elastic piece 644 bends. When the advance / retreat of the piston 624 becomes large, the tip portion 80 slides on the wall portion 32. As described above, the sliding ring 626 exerts a vibration damping function by the bending of the elastic piece 644 before the start of sliding and the sliding of the elastic piece 644.
  • FIG. 17 is a perspective view of the sliding ring 726 of the fifth embodiment.
  • FIG. 18A is a top view of the sliding ring 726 of the fifth embodiment
  • FIG. 18B is a side view of the sliding ring 726 of the fifth embodiment.
  • 19 (a) is a sectional view taken along line CC of the sliding ring 726 shown in FIG. 18 (a)
  • FIG. 19 (b) shows the sliding ring 726 shown in FIG. 18 (a). It is sectional drawing of line segment DD.
  • the sliding ring 726 of the fifth embodiment is different from the sliding ring 626 shown in FIG. 13 in the number and arrangement of the connecting portions 782.
  • the sliding ring 726 has an annular portion 742, a first elastic piece 744a and a second elastic piece 744b. As shown in FIG. 19A, an annular groove portion 742a is formed on the inner peripheral surface of the annular portion 742.
  • the first elastic piece 744a and the second elastic piece 744b project radially outward from the annular portion 742 and extend in opposite directions in the axial direction.
  • the connecting portion 782 connects the tip portion 780 side of the elastic piece 744 and the annular portion 742. As a result, the tip portion 80 and the base end portion 81 of the elastic piece 744 are connected to the annular portion 742.
  • a pair of connecting portions 782 are provided on both sides of the elastic piece 744. By connecting both sides of the main body 779 of the elastic piece 744 to the annular portion 742, the connecting portion 782 can prevent one of the first elastic piece 744a and the second elastic piece 744b from being assembled in a turned-up state at the time of assembly. ..
  • the connecting portion 782 is formed in a curved shape, is formed thinner than the main body 779, and is easily bent. As a result, the connecting portion 782 bends before the main body 779 of the elastic piece 744, so that the vibration damping function of the elastic piece 744 can be easily exerted.
  • FIG. 20 (a) is a perspective view of the sliding ring 826 of the sixth embodiment
  • FIG. 20 (b) is a sectional view taken along line EE of the sliding ring 826 shown in FIG. 20 (a).
  • the sliding ring 826 of the sixth embodiment is the same as the sliding ring 626 shown in FIG. 13 in that a plurality of elastic pieces 844 are arranged side by side in the circumferential direction, but the shape of the elastic pieces 844 is the same. different.
  • both ends in the circumferential direction are connected to the annular portion 842, whereas in the elastic piece 644 shown in FIG. 13, the upper and lower ends in the axial direction are connected to the annular portion 642. ing.
  • the sliding ring 826 has an annular portion 842 and an elastic piece 844.
  • the elastic piece 844 is a double-sided piece and has a main body 879 that can abut and bend in contact with the wall portion 32, and a connecting portion 882 that connects both ends of the main body 879 in the circumferential direction to the annular portion 842, respectively.
  • the main body 879 is formed in an arc shape and is separated from the annular portion 842. Therefore, the elastic piece 844 tends to bend inward in the radial direction.
  • the main body 879 has a pair of tapered surfaces 879a on the outer peripheral surface, and the central portion 879b of the outer peripheral surface is formed in a tapered shape so as to protrude. Since the outer peripheral surface of the elastic piece 844 has a pair of tapered surfaces 879a symmetrical vertically in the axial direction, any of the tapered surfaces 879a can come into contact with the wall portion 32 when the piston 24 moves forward and backward.
  • FIG. 21 (a) is a perspective view of the sliding ring 926 of the seventh embodiment
  • FIG. 21 (b) is a sectional view taken along line FF of the sliding ring 926 shown in FIG. 21 (a).
  • the sliding ring 926 of the seventh embodiment is the same as the sliding ring 826 shown in FIG. 20A in that it is a double-sided piece, but the shape of the connecting portion 982 of the elastic piece 944 is different.
  • a plurality of elastic pieces 944 are formed side by side in the circumferential direction, and the annular portion 942 projects outward in the radial direction and can be flexed in the radial direction.
  • the elastic piece 944 has an arc-shaped main body 979 and a connecting portion 982 that connects the main body 979 to the annular portion 942. Both ends of the main body 979 in the circumferential direction are connected to the annular portion 942 by the connecting portion 982, respectively.
  • a pair of connecting portions 982 are provided at both ends of the elastic piece 944, and the pair of connecting portions 982 are arranged separately at the top and bottom in the axial direction.
  • the connecting portion 982 is formed in a plate shape, and the center is bent in the axial direction. This bending makes it easier for the connecting portion 982 to bend so as to collapse in the radial direction.
  • the present invention relates to a vibration damping device that absorbs kinetic energy by moving the piston forward and backward, converts it into heat energy by friction, etc., and attenuates vibration.
  • 10 anti-vibration device 20 fixed part, 22 cover, 24 piston, 26 sliding ring, 28 coil spring, 30 pedestal part, 32 wall part, 34 protrusion part, 35 step part, 36 cylinder part, 38 elastic locking part, 40 insertion hole, 42 annular part, 44a first elastic piece, 44b second elastic piece, 46 flange part, 48 shaft part, 50 retaining part, 52 reduced diameter part, 54 recess, 56 contact part, 58 umbrella-shaped part , 60 fitting part, 62 convex part, 64 limiting part, 66 annular protrusion, 70 protruding part, 79 main body, 80 tip part, 81 base end part, 82 connecting part, 83 opening, 626 sliding ring, 644a 1 elastic piece, 644b 2nd elastic piece.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Vibration Dampers (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A vibration suppressing device 10 is provided with: a fixed portion 20 including a seat portion having an insertion hole, and a wall portion provided upright on the seat portion; a piston 24 which is inserted through the insertion hole and which is provided in such a way as to be capable of advancing and retreating; and a sliding ring 26 which slides along the piston 24 in accordance with the advancing and retreating of the piston 24. The sliding ring 26 includes an annular portion disposed between the piston 24 and the wall portion, and a resilient piece which projects radially inward from the annular portion. The resilient piece generates thermal energy by sliding along the piston 24.

Description

制振装置Vibration damping device
　本発明は、ピストンの進退動作によって運動エネルギーを吸収し、摩擦などで熱エネルギーに変換し、振動を減衰する制振装置に関する。 The present invention relates to a vibration damping device that absorbs kinetic energy by moving the piston forward and backward, converts it into heat energy by friction, etc., and attenuates vibration.
　例えば、ハッチバック、ワゴン、バン等の自動車には、後部の荷室を開閉するためのバックドアが備えられている。このバックドアの縁部が荷室開口の周縁部にゴム状のストッパ等を介して当接して、バックドアが荷室開口を閉じている。しかし、走行時やアイドリング中の振動等により、バックドアが車体と共振して不快音が生じる場合がある。この不快音を抑制するため、特許文献１に示す除振部材が提案されている。 For example, automobiles such as hatchbacks, wagons, and vans are equipped with a back door for opening and closing the rear luggage compartment. The edge of the back door comes into contact with the peripheral edge of the luggage compartment opening via a rubber-like stopper or the like, and the back door closes the luggage compartment opening. However, the back door may resonate with the vehicle body to generate an unpleasant noise due to vibration during running or idling. In order to suppress this unpleasant noise, the vibration isolating member shown in Patent Document 1 has been proposed.
　特許文献１には、粘弾性体を用いた除振部材が開示されている。この除振部材は、板状の上部支持体および下部支持体と、上部支持体および下部支持体に挟まれたコイルばねと、コイルばねの内側に配置された粘弾性体とを備える。除振部材が荷重を受け、コイルばねが縮むと、上部支持体および下部支持体が粘弾性体の両端に当り、粘弾性体が荷重を受ける。 Patent Document 1 discloses a vibration isolating member using a viscoelastic body. The vibration isolating member includes a plate-shaped upper support and a lower support, a coil spring sandwiched between the upper support and the lower support, and a viscoelastic body arranged inside the coil spring. When the vibration isolator receives a load and the coil spring contracts, the upper support and the lower support hit both ends of the viscoelastic body, and the viscoelastic body receives the load.
特開２０１０－２３０１５６号公報Japanese Unexamined Patent Publication No. 2010-23156
　特許文献１に開示される除振部材は、弾性体が押圧されることで制振するため、制振性能は弾性体の大きさに依存する。小型の弾性体を用いて十分な制振性能を発揮できると好ましい。 Since the vibration damping member disclosed in Patent Document 1 suppresses vibration by pressing the elastic body, the vibration damping performance depends on the size of the elastic body. It is preferable that a small elastic body can be used to exhibit sufficient vibration damping performance.
　本発明の目的は、小型の弾性体を用いて十分な制振性能を発揮できる制振装置を提供することにある。 An object of the present invention is to provide a vibration damping device capable of exhibiting sufficient vibration damping performance by using a small elastic body.
　上記課題を解決するために、本発明のある態様は、第１部材および第２部材に介在して第１部材に対する第２部材の振動を抑制する制振装置であって、第１部材および第２部材の一方に固定する固定部であって、挿通孔を有する台座部と、台座部に立設する壁部と、を有する固定部と、挿通孔に挿通され、進退可能に設けられるピストンであって、第１部材および第２部材の他方に当接可能に設けられた当接部を有するピストンと、ピストンの進退に応じて壁部またはピストンに摺動する摺動リングと、を備える。摺動リングは、ピストンおよび壁部の間に配置される環状部と、環状部から径方向外向きまたは径方向内向きに張り出す弾性片と、を有する。弾性片は、壁部またはピストンに摺動して熱エネルギーを発生させる。 In order to solve the above problems, one aspect of the present invention is a vibration damping device that suppresses vibration of the second member with respect to the first member via the first member and the second member, and the first member and the first member. A fixing portion that is fixed to one of the two members and has a pedestal portion having an insertion hole, a wall portion that stands on the pedestal portion, and a piston that is inserted into the insertion hole and is provided so as to be able to move forward and backward. It is provided with a piston having a contact portion provided so as to be in contact with the other of the first member and the second member, and a sliding ring that slides on the wall portion or the piston according to the advancement and retreat of the piston. The sliding ring has an annular portion arranged between the piston and the wall portion, and an elastic piece protruding radially outward or radially inward from the annular portion. The elastic piece slides on the wall or piston to generate thermal energy.
　本発明の別の態様もまた、第１部材および第２部材に介在して第１部材に対する第２部材の振動を抑制する制振装置である。この制振装置は、第１部材および第２部材の一方に固定する固定部であって、挿通孔を有する台座部と、台座部に立設する壁部と、を有する固定部と、挿通孔に挿通され、進退可能に設けられるピストンであって、第１部材および第２部材の他方に当接可能に設けられた当接部を有するピストンと、ピストンの進退に応じて壁部またはピストンに摺動する摺動リングと、を備える。摺動リングは、ピストンおよび壁部の間に配置される環状部と、環状部から径方向外向きまたは径方向内向きに張り出す弾性片と、を有する。弾性片は、ピストンの軸方向において互いに逆方向に延出する第１弾性片および第２弾性片を含む。 Another aspect of the present invention is also a vibration damping device that is interposed between the first member and the second member to suppress the vibration of the second member with respect to the first member. This vibration damping device is a fixing portion fixed to one of the first member and the second member, and has a pedestal portion having an insertion hole, a fixing portion having a wall portion erected on the pedestal portion, and an insertion hole. A piston that is inserted into and is provided so as to be able to move forward and backward, and has a contact portion that is provided so as to be able to contact the other of the first member and the second member, and a wall portion or a piston depending on the advancement and retreat of the piston. It is provided with a sliding ring that slides. The sliding ring has an annular portion arranged between the piston and the wall portion, and an elastic piece protruding radially outward or radially inward from the annular portion. The elastic pieces include a first elastic piece and a second elastic piece extending in opposite directions in the axial direction of the piston.
　本発明によれば、小型の弾性体を用いて十分な制振性能を発揮できる制振装置を提供できる。 According to the present invention, it is possible to provide a vibration damping device capable of exhibiting sufficient vibration damping performance by using a small elastic body.
第１実施例の制振装置の斜視図である。It is a perspective view of the vibration damping device of 1st Example. 第１実施例の制振装置の分解図である。It is an exploded view of the vibration damping device of 1st Example. 第１実施例の制振装置の断面図である。It is sectional drawing of the vibration damping device of 1st Example. 第２実施例の制振装置の分解図である。It is an exploded view of the vibration damping device of the 2nd Example. 第２実施例の制振装置の断面図である。It is sectional drawing of the vibration damping device of 2nd Example. 第２実施例での摺動リングを取り付けた状態のピストンの斜視図である。It is a perspective view of the piston in the state which attached the sliding ring in 2nd Example. 図７（ａ）は、摺動リングの平面図であり、図７（ｂ）は、摺動リングの側面図である。FIG. 7A is a plan view of the sliding ring, and FIG. 7B is a side view of the sliding ring. 第１変形例の制振装置の断面図である。It is sectional drawing of the vibration damping device of the 1st modification. 第２変形例の制振装置の断面図である。It is sectional drawing of the vibration damping device of the 2nd modification. 第３変形例の摺動リングについて説明するための断面図である。It is sectional drawing for demonstrating the sliding ring of the 3rd modification. 第３実施例の制振装置の分解図である。It is an exploded view of the vibration damping device of the 3rd Example. 第３実施例の制振装置の断面図である。It is sectional drawing of the vibration damping device of 3rd Example. 第４実施例の摺動リングの斜視図である。It is a perspective view of the sliding ring of 4th Example. 図１４（ａ）は、第４実施例の摺動リングの上面図であり、図１４（ｂ）は、第４実施例の摺動リングの側面図である。FIG. 14A is a top view of the sliding ring of the fourth embodiment, and FIG. 14B is a side view of the sliding ring of the fourth embodiment. 図１５（ａ）は、図１４（ａ）に示す摺動リングの線分Ａ－Ａ断面図であり、図１５（ｂ）は、図１４（ａ）に示す摺動リングの線分Ｂ－Ｂ断面図である。15 (a) is a cross-sectional view taken along the line segment AA of the sliding ring shown in FIG. 14 (a), and FIG. 15 (b) is a line segment B-of the sliding ring shown in FIG. 14 (a). It is a cross-sectional view of B. 第４実施例の制振装置の断面図である。It is sectional drawing of the vibration damping device of 4th Example. 第５実施例の摺動リングの斜視図である。It is a perspective view of the sliding ring of 5th Example. 図１８（ａ）は、第５実施例の摺動リングの上面図であり、図１８（ｂ）は、第５実施例の摺動リングの側面図である。FIG. 18A is a top view of the sliding ring of the fifth embodiment, and FIG. 18B is a side view of the sliding ring of the fifth embodiment. 図１９（ａ）は、図１８（ａ）に示す摺動リングの線分Ｃ－Ｃ断面図であり、図１９（ｂ）は、図１８（ａ）に示す摺動リングの線分Ｄ－Ｄ断面図である。19 (a) is a cross-sectional view taken along the line segment CC of the sliding ring shown in FIG. 18 (a), and FIG. 19 (b) is a line segment D- of the sliding ring shown in FIG. 18 (a). It is a D cross-sectional view. 図２０（ａ）は、第６実施例の摺動リングの斜視図であり、図２０（ｂ）は、図２０（ａ）に示す摺動リングの線分Ｅ－Ｅ断面図である。20 (a) is a perspective view of the sliding ring of the sixth embodiment, and FIG. 20 (b) is a sectional view taken along line EE of the sliding ring shown in FIG. 20 (a). 図２１（ａ）は、第７実施例の摺動リングの斜視図であり、図２１（ｂ）は、図２１（ａ）に示す摺動リングの線分Ｆ－Ｆ断面図である。21 (a) is a perspective view of the sliding ring of the seventh embodiment, and FIG. 21 (b) is a cross-sectional view of the line segment FF of the sliding ring shown in FIG. 21 (a).
　図１は、第１実施例の制振装置１０の斜視図である。図１（ａ）は斜め上方から見た制振装置１０であり、図１（ｂ）は斜め下方から見た制振装置１０である。制振装置１０は、車両のドアおよびバックドア等の開閉体に固定され、開閉体を閉じた状態で、車体側のパネルに当接する。制振装置１０は、開閉体を閉じたときの衝撃を吸収し、開閉体を閉じた状態での開閉体の振動を抑え、開閉体の共振により不快音が発生することを抑える。制振装置１０は、損失係数が高いほど有用な制振性能を発揮する。 FIG. 1 is a perspective view of the vibration damping device 10 of the first embodiment. FIG. 1A is a vibration damping device 10 viewed from diagonally above, and FIG. 1B is a vibration damping device 10 viewed from diagonally below. The vibration damping device 10 is fixed to an opening / closing body such as a vehicle door and a back door, and comes into contact with a panel on the vehicle body side in a state where the opening / closing body is closed. The vibration damping device 10 absorbs the impact when the opening / closing body is closed, suppresses the vibration of the opening / closing body when the opening / closing body is closed, and suppresses the generation of unpleasant noise due to the resonance of the opening / closing body. The higher the loss coefficient of the vibration damping device 10, the more useful the vibration damping performance.
　なお、制振装置１０は、車体側のパネル等の固定体に固定されて、開閉体に当接する態様であってあってもよい。つまり、制振装置１０は、開閉体および固定体の一方に固定され、開閉体および固定体の他方に当接可能である。また、制振装置１０は、開閉体に固定される態様に限られず、固定体に設けられてよい。いずれにしても、制振装置１０は、第１部材および第２部材に介在して第１部材に対する第２部材の振動を抑制する。 The vibration damping device 10 may be fixed to a fixed body such as a panel on the vehicle body side and abut on the opening / closing body. That is, the vibration damping device 10 is fixed to one of the opening / closing body and the fixed body, and can come into contact with the other of the opening / closing body and the fixed body. Further, the vibration damping device 10 is not limited to the mode of being fixed to the opening / closing body, and may be provided on the fixed body. In any case, the vibration damping device 10 intervenes between the first member and the second member to suppress the vibration of the second member with respect to the first member.
　制振装置１０は、第１部材および第２部材の一方に固定する固定部２０と、第１部材および第２部材の他方に当接可能なカバー２２とを備える。固定部２０は、車両のドアに設けられた取付孔に挿入されて固定される。 The vibration damping device 10 includes a fixing portion 20 fixed to one of the first member and the second member, and a cover 22 capable of contacting the other of the first member and the second member. The fixing portion 20 is inserted into a mounting hole provided in the door of the vehicle and fixed.
　図２は、制振装置１０の分解図である。また、図３は、制振装置１０の断面図である。制振装置１０は、固定部２０、カバー２２、ピストン２４、摺動リング２６およびコイルばね２８を備える。 FIG. 2 is an exploded view of the vibration damping device 10. Further, FIG. 3 is a cross-sectional view of the vibration damping device 10. The vibration damping device 10 includes a fixing portion 20, a cover 22, a piston 24, a sliding ring 26, and a coil spring 28.
　固定部２０は、台座部３０、壁部３２、筒部３６、弾性係止部３８および挿通孔４０を有する。挿通孔４０は、固定部２０に貫通して形成され、ピストン２４を挿通可能にする。台座部３０は、板状に形成され、中央に挿通孔４０を有する。台座部３０の挿通孔４０の孔縁には環状突部６６が形成され、ピストン２４の進退をガイドする。壁部３２は、台座部３０から立設し、筒状に形成される。 The fixing portion 20 has a pedestal portion 30, a wall portion 32, a tubular portion 36, an elastic locking portion 38, and an insertion hole 40. The insertion hole 40 is formed so as to penetrate the fixing portion 20 and allows the piston 24 to be inserted. The pedestal portion 30 is formed in a plate shape and has an insertion hole 40 in the center. An annular protrusion 66 is formed at the edge of the insertion hole 40 of the pedestal portion 30 to guide the advance / retreat of the piston 24. The wall portion 32 is erected from the pedestal portion 30 and is formed in a tubular shape.
　筒部３６は、台座部３０から垂下し、一対の弾性係止部３８は、筒部３６の側面に形成され、台座部３０に向かって延出する。筒部３６は、ドアに形成された取付孔に挿入され、弾性係止部３８は、その取付孔の縁に係止することで、固定部２０がドアに固定される。なお、ドアへの固定方法は、筒部３６および弾性係止部３８の形状に限られず、パネルに固定できれば他の形状であってよい。例えば、台座部３０の下面をパネルに接着や溶着してもよい。 The tubular portion 36 hangs down from the pedestal portion 30, and a pair of elastic locking portions 38 are formed on the side surface of the tubular portion 36 and extend toward the pedestal portion 30. The tubular portion 36 is inserted into a mounting hole formed in the door, and the elastic locking portion 38 is locked to the edge of the mounting hole, whereby the fixing portion 20 is fixed to the door. The method of fixing to the door is not limited to the shapes of the tubular portion 36 and the elastic locking portion 38, and other shapes may be used as long as they can be fixed to the panel. For example, the lower surface of the pedestal portion 30 may be adhered or welded to the panel.
　ピストン２４は、固定部２０の挿通孔４０に挿通される。ピストン２４は、フランジ部４６、軸部４８、抜け止め部５０、縮径部５２、凹部５４および制限部６４を有する。フランジ部４６は、ピストン２４の一端に位置し、径方向外向きに張り出すよう円盤状に形成される。凹部５４は、ピストン２４の一端面の中央に凹んで形成される。 The piston 24 is inserted into the insertion hole 40 of the fixing portion 20. The piston 24 has a flange portion 46, a shaft portion 48, a retaining portion 50, a diameter reduction portion 52, a recess 54, and a limiting portion 64. The flange portion 46 is located at one end of the piston 24 and is formed in a disk shape so as to project outward in the radial direction. The recess 54 is formed by being recessed in the center of one end surface of the piston 24.
　軸部４８は、フランジ部４６に連結し、円柱状に形成される。軸部４８は、フランジ部４６側に位置する大径部４８ａと、台座部３０側に位置する小径部４８ｂと、大径部４８ａに形成された制限部６４と、大径部４８ａおよび小径部４８ｂの境界に位置する縮径部５２とを有する。大径部４８ａは、摺動リング２６に環囲され、一対の制限部６４は、摺動リング２６の軸方向の移動を制限する。一対の制限部６４は、大径部４８ａに形成された環状の溝に形成される。小径部４８ｂは、大径部４８ａより小径に形成され、台座部３０の挿通孔４０に挿通される。これにより、小径部４８ｂを挿通する固定部２０を小型化できる。また、摺動リング２６が小径部４８ｂに配置される場合より大径にでき、安定して壁部３２に接触させることができる。 The shaft portion 48 is connected to the flange portion 46 and is formed in a columnar shape. The shaft portion 48 includes a large diameter portion 48a located on the flange portion 46 side, a small diameter portion 48b located on the pedestal portion 30 side, a limiting portion 64 formed on the large diameter portion 48a, and a large diameter portion 48a and a small diameter portion. It has a reduced diameter portion 52 located at the boundary of 48b. The large diameter portion 48a is surrounded by the sliding ring 26, and the pair of limiting portions 64 restricts the axial movement of the sliding ring 26. The pair of limiting portions 64 are formed in the annular groove formed in the large diameter portion 48a. The small diameter portion 48b is formed to have a smaller diameter than the large diameter portion 48a, and is inserted into the insertion hole 40 of the pedestal portion 30. As a result, the fixing portion 20 through which the small diameter portion 48b is inserted can be miniaturized. Further, the diameter of the sliding ring 26 can be made larger than that in the case where the sliding ring 26 is arranged in the small diameter portion 48b, and the sliding ring 26 can be stably brought into contact with the wall portion 32.
　抜け止め部５０は、ピストン２４の他端側に位置し、軸部４８の外周面に突出するように形成される。抜け止め部５０は、台座部３０の挿通孔４０の縁に引っ掛かることで、ピストン２４が固定部２０から外れないようにする。抜け止め部５０は径方向外向きに撓み可能な弾性爪であり、軸部４８の取り付けを容易にする。 The retaining portion 50 is located on the other end side of the piston 24 and is formed so as to project on the outer peripheral surface of the shaft portion 48. The retaining portion 50 is hooked on the edge of the insertion hole 40 of the pedestal portion 30 to prevent the piston 24 from coming off from the fixing portion 20. The retaining portion 50 is an elastic claw that can bend outward in the radial direction, facilitating the attachment of the shaft portion 48.
　摺動リング２６は、環状部４２と、第１弾性片４４ａおよび第２弾性片４４ｂ（これらを区別しない場合、「弾性片４４」という）とを有する。摺動リング２６は、粘弾性材料により形成され、例えば、エチレンプロピレンジエンゴムと４－メチル－１－ペンテン・α－オレフィン共重合体で形成されることが好ましい。もちろん、摺動リング２６は、別の粘弾性材料で形成されてもよい。 The sliding ring 26 has an annular portion 42 and a first elastic piece 44a and a second elastic piece 44b (when these are not distinguished, they are referred to as "elastic piece 44"). The sliding ring 26 is formed of a viscoelastic material, and is preferably formed of, for example, ethylene propylene diene rubber and a 4-methyl-1-pentene / α-olefin copolymer. Of course, the sliding ring 26 may be made of another viscoelastic material.
　環状部４２は、円筒状に形成され、図３に示すようにピストン２４の大径部４８ａに環囲する。第１弾性片４４ａおよび第２弾性片４４ｂは、環状部４２の外周面の中央位置から径方向外向きに張り出し、円環状に形成され、ピストン２４の軸方向に別れるように形成され、先端に向かって離れるように形成される。一対の弾性片４４は、ピストン２４の軸方向において互いに逆方向に延出し、壁部３２の内周面に弾性的に接触する。 The annular portion 42 is formed in a cylindrical shape and surrounds the large diameter portion 48a of the piston 24 as shown in FIG. The first elastic piece 44a and the second elastic piece 44b project radially outward from the center position of the outer peripheral surface of the annular portion 42, are formed in an annular shape, are formed so as to separate in the axial direction of the piston 24, and are formed at the tip thereof. It is formed so as to move away from each other. The pair of elastic pieces 44 extend in opposite directions in the axial direction of the piston 24 and elastically contact the inner peripheral surface of the wall portion 32.
　コイルばね２８は、一端がフランジ部４６に当接し、他端が台座部３０に当接し、軸部４８および壁部３２を環囲する。コイルばね２８は、ピストン２４を固定部２０の台座部３０から離れる方向に付勢し、ピストン２４が押し込まれたときに反力を発生する。 One end of the coil spring 28 abuts on the flange portion 46 and the other end abuts on the pedestal portion 30 to surround the shaft portion 48 and the wall portion 32. The coil spring 28 urges the piston 24 in a direction away from the pedestal portion 30 of the fixing portion 20, and generates a reaction force when the piston 24 is pushed in.
　カバー２２は、ゴム材料でカップ状に形成され、ピストン２４、摺動リング２６およびコイルばね２８を覆う。カバー２２は、当接部５６、傘状部５８、嵌合部６０および凸部６２を有する。 The cover 22 is made of a rubber material and is formed in a cup shape to cover the piston 24, the sliding ring 26, and the coil spring 28. The cover 22 has a contact portion 56, an umbrella-shaped portion 58, a fitting portion 60, and a convex portion 62.
　当接部５６は、カバー２２の端面に位置し、車体側のパネルに当接可能である。傘状部５８は、固定状態でドアの表面に弾接し、制振装置１０のガタつきを抑える。嵌合部６０は、溝状に形成され、台座部３０の外周縁に嵌合する。凸部６２は、当接部５６の裏面の中央位置に突起状に形成され、ピストン２４の凹部５４に係合する。 The contact portion 56 is located on the end surface of the cover 22 and can contact the panel on the vehicle body side. The umbrella-shaped portion 58 is in contact with the surface of the door in a fixed state to suppress rattling of the vibration damping device 10. The fitting portion 60 is formed in a groove shape and fits on the outer peripheral edge of the pedestal portion 30. The convex portion 62 is formed in a protruding shape at the center position of the back surface of the contact portion 56, and engages with the concave portion 54 of the piston 24.
　図３に示す制振装置１０が外力を受けてない状態では、コイルばね２８の付勢によって、ピストン２４の抜け止め部５０が台座部３０に引っ掛かった初期状態をとる。抜け止め部５０が台座部３０に引っ掛かると、ピストン２４の進行が規制され、フランジ部４６が壁部３２に当接すると、ピストン２４の退行が規制される。初期状態では、フランジ部４６は、壁部３２の先端と軸方向に離れており、その離れた距離分をピストン２４が軸方向に進退できる。 When the vibration damping device 10 shown in FIG. 3 is not receiving an external force, the retaining portion 50 of the piston 24 is caught by the pedestal portion 30 due to the urging of the coil spring 28. When the retaining portion 50 is caught on the pedestal portion 30, the advance of the piston 24 is restricted, and when the flange portion 46 comes into contact with the wall portion 32, the regression of the piston 24 is restricted. In the initial state, the flange portion 46 is axially separated from the tip of the wall portion 32, and the piston 24 can advance and retreat in the axial direction by the distance.
　制振装置１０の動作について説明する。固定部２０がドアに固定され、ドアを閉じた状態では、カバー２２の当接部５６が車体側のパネルに当接した状態をとる。ここで、車両の振動によってドアが振動すると、ドアおよび車体側パネルの間隔が変化し、その相対変位に応じてピストン２４が進退する。摺動リング２６はピストン２４により軸方向の移動が制限されており、ピストン２４が進退すると摺動リング２６と壁部３２に相対変位が生じ、摺動リング２６が壁部３２に摺動する。つまり、摺動リング２６は、ピストン２４の進退に応じて壁部３２に摺動する。弾性片４４が壁部３２に摺動することで摩擦熱が発生し、ピストン２４の振動エネルギーが熱エネルギーに変換され、制振することができる。 The operation of the vibration damping device 10 will be described. When the fixing portion 20 is fixed to the door and the door is closed, the contact portion 56 of the cover 22 is in contact with the panel on the vehicle body side. Here, when the door vibrates due to the vibration of the vehicle, the distance between the door and the vehicle body side panel changes, and the piston 24 moves forward and backward according to the relative displacement. The movement of the sliding ring 26 in the axial direction is restricted by the piston 24, and when the piston 24 moves forward and backward, a relative displacement occurs between the sliding ring 26 and the wall portion 32, and the sliding ring 26 slides on the wall portion 32. That is, the sliding ring 26 slides on the wall portion 32 according to the advance / retreat of the piston 24. When the elastic piece 44 slides on the wall portion 32, frictional heat is generated, and the vibration energy of the piston 24 is converted into heat energy, so that vibration can be suppressed.
　弾性片４４が径方向外向きに張り出しているため、壁部３２に弾接した状態を維持でき、ピストン２４の進退時に安定して摩擦を発生させることができる。また、弾性片４４が軸方向に別れて一対形成されているため、２箇所で摩擦を発生させることができ、ピストン２４が傾いてもいずれか一方の弾性片４４の接触を維持することができる。また、一対の弾性片４４が軸方向に別れているため、ピストン２４の進行時および退行時のいずれにも壁部３２への接触を安定させて維持することができる。 Since the elastic piece 44 projects outward in the radial direction, the state of being in contact with the wall portion 32 can be maintained, and friction can be stably generated when the piston 24 moves forward and backward. Further, since the elastic pieces 44 are separated in the axial direction to form a pair, friction can be generated at two places, and even if the piston 24 is tilted, the contact of one of the elastic pieces 44 can be maintained. .. Further, since the pair of elastic pieces 44 are separated in the axial direction, the contact with the wall portion 32 can be stably maintained both when the piston 24 is moving and when the piston 24 is moving backward.
　図４は、第２実施例の制振装置１００の分解図である。図５は、第２実施例の制振装置１００の断面図である。制振装置１００は、固定部２０、カバー２２、ピストン２４、摺動リング１２６およびコイルばね２８を備える。第２実施例の制振装置１００は、図２に示す制振装置１０と比べて、部品の構成は同様であるが、摺動リング１２６の形状が異なる。 FIG. 4 is an exploded view of the vibration damping device 100 of the second embodiment. FIG. 5 is a cross-sectional view of the vibration damping device 100 of the second embodiment. The vibration damping device 100 includes a fixing portion 20, a cover 22, a piston 24, a sliding ring 126, and a coil spring 28. The vibration damping device 100 of the second embodiment has the same component configuration as the vibration damping device 10 shown in FIG. 2, but the shape of the sliding ring 126 is different.
　ピストン２４および摺動リング１２６について新たな図面を参照しつつ説明する。図６は、摺動リング１２６を取り付けた状態のピストン２４の斜視図である。図７（ａ）は、摺動リング１２６の平面図であり、図７（ｂ）は、摺動リング１２６の側面図である。 The piston 24 and the sliding ring 126 will be described with reference to new drawings. FIG. 6 is a perspective view of the piston 24 with the sliding ring 126 attached. FIG. 7A is a plan view of the sliding ring 126, and FIG. 7B is a side view of the sliding ring 126.
　摺動リング１２６は、環状部１４２、第１弾性片１４４ａおよび第２弾性片１４４ｂを有する。摺動リング１２６は、粘弾性材料で円筒状に形成され、撓み可能である。第１弾性片１４４ａおよび第２弾性片１４４ｂ（これらを区別しない場合、「弾性片１４４」という）は、環状部１４２から径方向外向きに張り出し、ピストン１２４の軸方向において互いに逆方向に延出する。 The sliding ring 126 has an annular portion 142, a first elastic piece 144a, and a second elastic piece 144b. The sliding ring 126 is made of a viscoelastic material and is formed in a cylindrical shape and is flexible. The first elastic piece 144a and the second elastic piece 144b (when these are not distinguished, they are referred to as "elastic piece 144") project radially outward from the annular portion 142 and extend in opposite directions in the axial direction of the piston 124. To do.
　また、図７（ａ）に示すように、弾性片１４４は周方向に離間して複数設けられる。これにより、弾性片１４４が撓みやすくなり、ピストン１２４が傾斜した場合にも、いずれかの弾性片１４４が壁部１３２に接触した状態を維持できる。また、壁部１３２を角筒状に形成しても、壁部１３２の各面に弾接させる弾性片１４４を容易に形成できる。第１弾性片１４４ａおよび第２弾性片１４４ｂは周方向に交互に配置され、それぞれ複数形成される。 Further, as shown in FIG. 7A, a plurality of elastic pieces 144 are provided so as to be separated from each other in the circumferential direction. As a result, the elastic piece 144 is easily bent, and even when the piston 124 is tilted, the state in which one of the elastic pieces 144 is in contact with the wall portion 132 can be maintained. Further, even if the wall portion 132 is formed in a square tubular shape, the elastic piece 144 to be elastically contacted with each surface of the wall portion 132 can be easily formed. The first elastic piece 144a and the second elastic piece 144b are alternately arranged in the circumferential direction, and a plurality of each is formed.
　摺動リング１２６の弾性片１４４は、ピストン２４の進退に応じて壁部３２に摺動し、この摺動により熱エネルギーを発生させ、制振させることができる。第１弾性片１４４ａおよび第２弾性片１４４ｂは、軸方向において互いに逆方向に延出することで、ピストン１２４の進行時および退行時に安定して接触状態を維持できる。 The elastic piece 144 of the sliding ring 126 slides on the wall portion 32 according to the advancement and retreat of the piston 24, and thermal energy can be generated by this sliding to suppress vibration. By extending the first elastic piece 144a and the second elastic piece 144b in opposite directions in the axial direction, the first elastic piece 144a and the second elastic piece 144b can stably maintain a contact state when the piston 124 advances and retracts.
　図８は、第１変形例の制振装置２００の断面図である。変形例の制振装置２００は、図５に示す制振装置１００と比べて、固定部２２０の壁部２３２の形状が異なる。壁部２３２は、台座部１３０から立設し、円筒状に形成される。 FIG. 8 is a cross-sectional view of the vibration damping device 200 of the first modification. The vibration damping device 200 of the modified example has a different shape of the wall portion 232 of the fixing portion 220 as compared with the vibration damping device 100 shown in FIG. The wall portion 232 is erected from the pedestal portion 130 and is formed in a cylindrical shape.
　壁部２３２は、ピストン１２４を環囲し、壁部２３２の内壁面はピストン１２４の外周面に対向する。壁部２３２の内壁面は、先端側から順に第１平行面２３２ａ、傾斜面２３２ｂ、第２平行面２３２ｃを有する。第１平行面２３２ａおよび第２平行面２３２ｃは、軸方向に平行に形成され、内壁面の間隔、すなわち内径が一定になるように形成される。傾斜面２３２ｂは、軸方向に傾斜して形成され、台座部１３０に向かって内壁面の間隔が小さくなるように形成される。 The wall portion 232 surrounds the piston 124, and the inner wall surface of the wall portion 232 faces the outer peripheral surface of the piston 124. The inner wall surface of the wall portion 232 has a first parallel surface 232a, an inclined surface 232b, and a second parallel surface 232c in order from the tip end side. The first parallel surface 232a and the second parallel surface 232c are formed parallel to each other in the axial direction, and are formed so that the distance between the inner wall surfaces, that is, the inner diameter is constant. The inclined surface 232b is formed so as to be inclined in the axial direction so that the distance between the inner wall surfaces becomes smaller toward the pedestal portion 130.
　図８に示す初期状態において、摺動リング１２６の弾性片１４４は、第１平行面２３２ａに接触している。ピストン１２４が退行すると、弾性片１４４は、第１平行面２３２ａを摺動した後、傾斜面２３２ｂに接触し、傾斜面２３２ｂを摺動する。ピストン１２４の退行時に傾斜面２３２ｂの間隔が狭くなるため、弾性片１４４と傾斜面２３２ｂの摩擦力が高くするなるように設定できる。また、摺動リング１２６にひずみが生じても傾斜面２３２ｂを摺動する際にひずみがピストン１２４の進退に影響することを抑えることができる。 In the initial state shown in FIG. 8, the elastic piece 144 of the sliding ring 126 is in contact with the first parallel surface 232a. When the piston 124 regresses, the elastic piece 144 slides on the first parallel surface 232a, then contacts the inclined surface 232b, and slides on the inclined surface 232b. Since the distance between the inclined surfaces 232b becomes narrow when the piston 124 regresses, the frictional force between the elastic piece 144 and the inclined surface 232b can be set to be high. Further, even if the sliding ring 126 is strained, it is possible to prevent the strain from affecting the advance / retreat of the piston 124 when sliding on the inclined surface 232b.
　　第２平行面２３２ｃは、傾斜面２３２ｂより台座部１３０側に位置し、ピストン１２４の進退をガイドし、ピストン１２４の傾斜を抑えることができる。 The second parallel surface 232c is located on the pedestal portion 130 side of the inclined surface 232b, can guide the advance / retreat of the piston 124, and can suppress the inclination of the piston 124.
　図９は、第２変形例の制振装置３００の断面図である。図９に示す制振装置３００の断面は、図８に示す制振装置２００の線分Ａ－Ａの位置である。第２変形例の制振装置３００は、図５に示す制振装置１００と比べて、固定部３２０の壁部３３２の形状が異なる。 FIG. 9 is a cross-sectional view of the vibration damping device 300 of the second modified example. The cross section of the vibration damping device 300 shown in FIG. 9 is the position of the line segment AA of the vibration damping device 200 shown in FIG. The vibration damping device 300 of the second modification is different from the vibration damping device 100 shown in FIG. 5 in the shape of the wall portion 332 of the fixed portion 320.
　壁部３３２の内周面には、周方向に離れて配置される複数の突出部７０が形成される。突出部７０は、軸方向に沿って延在するようにリブ状に形成される。複数の突出部７０は、複数の弾性片１４４と周方向にずれて位置する。つまり、複数の突出部７０は、複数の弾性片１４４の隙間に位置する。突出部７０は、ピストン１２４が傾斜した場合に当接可能に設けられ、ピストン１２４の進退を安定させ、弾性片１４４の弾接を安定させることができる。 A plurality of projecting portions 70 arranged apart from each other in the circumferential direction are formed on the inner peripheral surface of the wall portion 332. The protrusion 70 is formed in a rib shape so as to extend along the axial direction. The plurality of projecting portions 70 are positioned so as to be offset from the plurality of elastic pieces 144 in the circumferential direction. That is, the plurality of protrusions 70 are located in the gaps between the plurality of elastic pieces 144. The protruding portion 70 is provided so as to be able to come into contact with the piston 124 when the piston 124 is tilted, and can stabilize the advance / retreat of the piston 124 and the bullet contact of the elastic piece 144.
　なお、摺動リング１２６が壁部３３２側に保持される場合には、複数の突出部７０はピストン１２４の外周面にリブ状に形成されてよい。 When the sliding ring 126 is held on the wall portion 332 side, the plurality of protruding portions 70 may be formed in a rib shape on the outer peripheral surface of the piston 124.
　図１０は、第３変形例の摺動リング４２６について説明するための断面図である。摺動リング４２６は、ピストン１２４の制限部６４に保持されている。摺動リング４２６は、環状部４４２と、複数の弾性片４４４とを有する。環状部４４２は円筒状に形成される。 FIG. 10 is a cross-sectional view for explaining the sliding ring 426 of the third modification. The sliding ring 426 is held by the limiting portion 64 of the piston 124. The sliding ring 426 has an annular portion 442 and a plurality of elastic pieces 444. The annular portion 442 is formed in a cylindrical shape.
　摺動リング４２６は、軸方向に貫通した空隙７２を有し、この空隙７２により弾性片４４４が径方向外向きに張り出すように両持ち片に形成される。弾性片４４４は、壁部１３２の内壁面に弾接し、ピストン１２４の進退に応じて壁部１３２に摺動し、摩擦エネルギーを発生させる。 The sliding ring 426 has a gap 72 penetrating in the axial direction, and the gap 72 is formed in the double-sided piece so that the elastic piece 444 projects outward in the radial direction. The elastic piece 444 comes into contact with the inner wall surface of the wall portion 132 and slides on the wall portion 132 as the piston 124 advances and retreats, generating frictional energy.
　図１１は、第３実施例の制振装置５００の分解図である。また、図１２は、第３実施例の制振装置５００の断面図である。第３実施例の制振装置５００は、図３に示す制振装置１０と比べて、摺動リング５２６の形状および配置が主に異なり、摺動リング５２６がピストン５２４ではなく、固定部５２０に保持される点が異なる。 FIG. 11 is an exploded view of the vibration damping device 500 of the third embodiment. Further, FIG. 12 is a cross-sectional view of the vibration damping device 500 of the third embodiment. In the vibration damping device 500 of the third embodiment, the shape and arrangement of the sliding ring 526 are mainly different from those of the vibration damping device 10 shown in FIG. 3, and the sliding ring 526 is not attached to the piston 524 but to the fixed portion 520. The difference is that they are retained.
　固定部５２０は、台座部３０、壁部３２、突部３４、段差部３５、筒部３６および弾性係止部３８を有する。図１１に示すように、突部３４は、壁部３２の内周面から径方向内向きに突出し、周方向に離間して複数形成される。突部３４は、ピストン２４の傾きを抑え、ピストン２４の軸方向の進退をガイドする。図１２に示すように、段差部３５は、壁部３２の内周面から径方向内向きに張り出し、突部３４と軸方向に離間する。突部３４および段差部３５は、摺動リング２６の軸方向の移動を制限する制限部として機能する。 The fixing portion 520 has a pedestal portion 30, a wall portion 32, a protruding portion 34, a step portion 35, a tubular portion 36, and an elastic locking portion 38. As shown in FIG. 11, a plurality of protrusions 34 are formed so as to project radially inward from the inner peripheral surface of the wall portion 32 and are separated from each other in the circumferential direction. The protrusion 34 suppresses the inclination of the piston 24 and guides the piston 24 to move forward and backward in the axial direction. As shown in FIG. 12, the step portion 35 projects radially inward from the inner peripheral surface of the wall portion 32 and is axially separated from the protrusion 34. The protrusion 34 and the step 35 function as a limiting portion that limits the axial movement of the sliding ring 26.
　摺動リング５２６は、環状部５４２と、第１弾性片５４４ａおよび第２弾性片５４４ｂ（これらを区別しない場合、「弾性片５４４」という）とを有する。環状部５４２は、円筒状に形成され、図１２に示すようにピストン５２４の大径部を環囲する。第１弾性片５４４ａおよび第２弾性片５４４ｂは、環状部５４２の内周面の中央位置から径方向内向きに張り出し、円環状に形成され、ピストン５２４の軸方向に別れるように形成され、先端に向かって離れるように形成される。一対の弾性片５４４は、ピストン５２４の軸方向において互いに逆方向に延出し、ピストン５２４の外周面に弾性的に接触する。 The sliding ring 526 has an annular portion 542 and a first elastic piece 544a and a second elastic piece 544b (when these are not distinguished, they are referred to as "elastic piece 544"). The annular portion 542 is formed in a cylindrical shape and surrounds the large diameter portion of the piston 524 as shown in FIG. The first elastic piece 544a and the second elastic piece 544b project radially inward from the center position of the inner peripheral surface of the annular portion 542, are formed in an annular shape, and are formed so as to be separated in the axial direction of the piston 524, and the tips thereof. It is formed so as to separate toward. The pair of elastic pieces 544 extend in opposite directions in the axial direction of the piston 524 and elastically contact the outer peripheral surface of the piston 524.
　このように、摺動リング５２６は、固定部５２０により軸方向の移動が制限されており、ピストン５２４の進退に応じてピストン５２４に摺動する。弾性片５４４がピストン５２４に摺動することで摩擦熱が発生し、ピストン５２４の振動エネルギーが熱エネルギーに変換され、制振することができる。 As described above, the sliding ring 526 is restricted from moving in the axial direction by the fixing portion 520, and slides on the piston 524 according to the advance / retreat of the piston 524. When the elastic piece 544 slides on the piston 524, frictional heat is generated, and the vibration energy of the piston 524 is converted into heat energy, so that vibration can be suppressed.
　なお、摺動リング５２６の弾性片５４４は、図７（ｂ）に示すように弾性片５４４は周方向に離間して複数設けられてもよい。また、弾性片５４４は、環状部５４２から径方向内向きに張り出し、ピストン５２４の軸方向において互いに逆方向に延出してもよい。 As shown in FIG. 7B, a plurality of elastic pieces 544 of the sliding ring 526 may be provided so as to be separated from each other in the circumferential direction. Further, the elastic piece 544 may extend inward in the radial direction from the annular portion 542 and extend in opposite directions in the axial direction of the piston 524.
　図１３は、第４実施例の摺動リング６２６の斜視図である。また、図１４（ａ）は、第４実施例の摺動リング６２６の上面図であり、図１４（ｂ）は、第４実施例の摺動リング６２６の側面図である。また、図１５（ａ）は、図１４（ａ）に示す摺動リング６２６の線分Ａ－Ａ断面図であり、図１５（ｂ）は、図１４（ａ）に示す摺動リング６２６の線分Ｂ－Ｂ断面図である。 FIG. 13 is a perspective view of the sliding ring 626 of the fourth embodiment. 14 (a) is a top view of the sliding ring 626 of the fourth embodiment, and FIG. 14 (b) is a side view of the sliding ring 626 of the fourth embodiment. 15 (a) is a sectional view taken along line AA of the sliding ring 626 shown in FIG. 14 (a), and FIG. 15 (b) is a sectional view of the sliding ring 626 shown in FIG. 14 (a). It is sectional drawing BB of a line segment.
　第４実施例の摺動リング６２６は、図６に示す摺動リング１２６と比べて、第１弾性片６４４ａおよび第２弾性片６４４ｂが連結部８２を有する点で異なる。 The sliding ring 626 of the fourth embodiment is different from the sliding ring 126 shown in FIG. 6 in that the first elastic piece 644a and the second elastic piece 644b have a connecting portion 82.
　摺動リング６２６は、環状部６４２、第１弾性片６４４ａおよび第２弾性片６４４ｂ（これらを区別しない場合、「弾性片６４４」という）を有する。弾性片６４４は、本体７９、先端部８０、基端部８１、連結部８２および開口部８３を有する。弾性片６４４は、環状部６４２から径方向外向きに張り出し、弾性片６４４の本体７９は径方向に対して傾斜し、軸方向に傾斜して延出している。第１弾性片６４４ａおよび第２弾性片６４４ｂは、軸方向において互いに逆方向に延出する。これにより、ピストンの進退時に安定して接触状態を維持できる。 The sliding ring 626 has an annular portion 642, a first elastic piece 644a and a second elastic piece 644b (when these are not distinguished, they are referred to as "elastic piece 644"). The elastic piece 644 has a main body 79, a tip portion 80, a base end portion 81, a connecting portion 82, and an opening portion 83. The elastic piece 644 projects radially outward from the annular portion 642, and the main body 79 of the elastic piece 644 is inclined in the radial direction and extends in the axial direction. The first elastic piece 644a and the second elastic piece 644b extend in opposite directions in the axial direction. As a result, the contact state can be stably maintained when the piston moves forward and backward.
　連結部８２は、弾性片６４４の先端部８０側と環状部６４２とを連結する。つまり、弾性片６４４の本体７９の先端部８０と基端部８１がともに環状部６４２に連結される。これにより、連結部８２が先端部８０の動きを制限することができ、摺動リング６２６をピストンと固定部の間に組み付ける際に、第１弾性片６４４ａおよび第２弾性片６４４ｂの一方がめくれた状態で組み付けられることを抑えることができる。 The connecting portion 82 connects the tip portion 80 side of the elastic piece 644 and the annular portion 642. That is, both the tip end 80 and the base end 81 of the main body 79 of the elastic piece 644 are connected to the annular portion 642. As a result, the connecting portion 82 can restrict the movement of the tip portion 80, and when the sliding ring 626 is assembled between the piston and the fixing portion, one of the first elastic piece 644a and the second elastic piece 644b is turned over. It is possible to prevent the piston from being assembled in a closed state.
　開口部８３は、図１４（ａ）に示す上面視にて、連結部８２の側面をさらけ出すように連結部８２に重なる位置に形成される。開口部８３により連結部８２の成形を容易にできる。また、摺動リング６２６をピストンと固定部の間に組み付ける際に、開口部８３により弾性片６４４を撓みやすくして組み付けを容易にすることができる。 The opening 83 is formed at a position overlapping the connecting portion 82 so as to expose the side surface of the connecting portion 82 in the top view shown in FIG. 14A. The opening 83 facilitates the molding of the connecting portion 82. Further, when the sliding ring 626 is assembled between the piston and the fixed portion, the elastic piece 644 can be easily bent by the opening 83 to facilitate the assembly.
　図１５（ｂ）には、連結部８２が第２弾性片６４４ｂの先端部８０より軸方向下向きに突き出ていることを示す。先端部８０側から固定部の壁部３２内に入れる際、連結部８２が先端部８０より突き出ることで、壁部３２の頂部に先端部８０より先に当たり、先端部８０を引き込むように撓むことができる。これにより、弾性片６４４がめくれずにスムーズに組み付けられる。 FIG. 15B shows that the connecting portion 82 protrudes downward in the axial direction from the tip portion 80 of the second elastic piece 644b. When the connecting portion 82 protrudes from the tip portion 80 when it is inserted into the wall portion 32 of the fixed portion from the tip portion 80 side, the connecting portion 82 hits the top of the wall portion 32 before the tip portion 80 and bends so as to pull in the tip portion 80. be able to. As a result, the elastic piece 644 can be assembled smoothly without turning over.
　図１５（ｂ）に示すように、連結部８２と環状部６４２との連結位置８２ａは、連結部８２と弾性片６４４との連結位置８２ｂより、弾性片６４４の基端部８１側に位置している。これにより、連結部８２が傾斜し、連結位置８２ｂが環状部６４２に接近するように連結部８２が撓みやすくなる。そのため、弾性片６４４の先端部８０が環状部６４２に接近する動きを連結部８２が妨げにくくなる。 As shown in FIG. 15B, the connecting position 82a between the connecting portion 82 and the annular portion 642 is located closer to the base end portion 81 of the elastic piece 644 than the connecting position 82b between the connecting portion 82 and the elastic piece 644. ing. As a result, the connecting portion 82 is tilted, and the connecting portion 82 is easily bent so that the connecting position 82b approaches the annular portion 642. Therefore, the connecting portion 82 is less likely to hinder the movement of the tip portion 80 of the elastic piece 644 approaching the annular portion 642.
　図１５（ａ）に示すように、連結部８２は、軸方向および径方向に傾斜して湾曲している。連結部８２は、先端部８０から基端部８１に向かって傾斜する傾斜部分を有する。これにより、連結部８２が弾性片６４４の先端部８０を環状部６４２に接近させるように撓みやすくなる。 As shown in FIG. 15A, the connecting portion 82 is inclined and curved in the axial direction and the radial direction. The connecting portion 82 has an inclined portion that is inclined from the tip portion 80 toward the base end portion 81. As a result, the connecting portion 82 tends to bend so that the tip portion 80 of the elastic piece 644 approaches the annular portion 642.
　図１５（ａ）および図１５（ｂ）に示すように、連結部８２は、弾性片６４４の本体７９より薄く形成され、弾性片６４４の本体７９より撓みやすくなっている。これにより、弾性片６４４の本体７９より先に連結部８２が撓むため、本体７９が壁部３２に摺動するときの撓みを阻害し難く、弾性片６４４の制振機能を発揮しやすくできる。 As shown in FIGS. 15A and 15B, the connecting portion 82 is formed thinner than the main body 79 of the elastic piece 644, and is more easily bent than the main body 79 of the elastic piece 644. As a result, since the connecting portion 82 bends before the main body 79 of the elastic piece 644, it is difficult to hinder the bending when the main body 79 slides on the wall portion 32, and the vibration damping function of the elastic piece 644 can be easily exerted. ..
　図１６は、第４実施例の制振装置６００の断面図である。制振装置６００は、固定部６２０、カバー２２、ピストン６２４および摺動リング６２６を備える。 FIG. 16 is a cross-sectional view of the vibration damping device 600 of the fourth embodiment. The vibration damping device 600 includes a fixing portion 620, a cover 22, a piston 624, and a sliding ring 626.
　固定部６２０の弾性爪６４０は、壁部３２から径方向内向きに張り出すように複数形成され、ピストン６２４を挿通する挿通孔を構成する。ピストン６２４の基端に形成された抜け止め部５０は、弾性爪６４０に当たってピストン６２４の進行が規制される。 A plurality of elastic claws 640 of the fixing portion 620 are formed so as to project inward in the radial direction from the wall portion 32, and form an insertion hole through which the piston 624 is inserted. The retaining portion 50 formed at the base end of the piston 624 hits the elastic claw 640 to regulate the progress of the piston 624.
　摺動リング６２６は、ピストン６２４に取り付けられ、ピストン６２４の進退に応じて固定部６２０の壁部３２に摺動する。第１弾性片６４４ａの先端部８０は壁部３２に当たって径方向内向きに押され、連結部８２が潰れるように変形し、先端部８０が環状部６４２に接近して、第１弾性片６４４ａが撓んでいる。これにより、第１弾性片６４４ａが壁部３２に押し当てられる。また、第２弾性片６４４ｂも第１弾性片６４４ａと同様に壁部３２に押し当てられる。 The sliding ring 626 is attached to the piston 624 and slides on the wall portion 32 of the fixing portion 620 according to the advance / retreat of the piston 624. The tip 80 of the first elastic piece 644a hits the wall 32 and is pushed inward in the radial direction, the connecting portion 82 is deformed so as to be crushed, the tip 80 approaches the annular portion 642, and the first elastic piece 644a is moved. It is bent. As a result, the first elastic piece 644a is pressed against the wall portion 32. Further, the second elastic piece 644b is also pressed against the wall portion 32 in the same manner as the first elastic piece 644a.
　ピストン６２４が進退し始めると、初期は先端部８０が壁部３２に引っかかって弾性片６４４が撓む。ピストン６２４の進退が大きくなると先端部８０が壁部３２に摺動する。このように、摺動リング６２６は、摺動開始前の弾性片６４４の撓みと、弾性片６４４の摺動とによって制振機能を発揮する。 When the piston 624 starts to move forward and backward, the tip 80 is initially caught by the wall 32 and the elastic piece 644 bends. When the advance / retreat of the piston 624 becomes large, the tip portion 80 slides on the wall portion 32. As described above, the sliding ring 626 exerts a vibration damping function by the bending of the elastic piece 644 before the start of sliding and the sliding of the elastic piece 644.
　図１７は、第５実施例の摺動リング７２６の斜視図である。また、図１８（ａ）は、第５実施例の摺動リング７２６の上面図であり、図１８（ｂ）は、第５実施例の摺動リング７２６の側面図である。また、図１９（ａ）は、図１８（ａ）に示す摺動リング７２６の線分Ｃ－Ｃ断面図であり、図１９（ｂ）は、図１８（ａ）に示す摺動リング７２６の線分Ｄ－Ｄ断面図である。 FIG. 17 is a perspective view of the sliding ring 726 of the fifth embodiment. Further, FIG. 18A is a top view of the sliding ring 726 of the fifth embodiment, and FIG. 18B is a side view of the sliding ring 726 of the fifth embodiment. 19 (a) is a sectional view taken along line CC of the sliding ring 726 shown in FIG. 18 (a), and FIG. 19 (b) shows the sliding ring 726 shown in FIG. 18 (a). It is sectional drawing of line segment DD.
　第５実施例の摺動リング７２６は、図１３に示す摺動リング６２６と比べて、連結部７８２の数および配置が異なる。摺動リング７２６は、環状部７４２、第１弾性片７４４ａおよび第２弾性片７４４ｂを有する。図１９（ａ）に示すように、環状部７４２の内周面に環状の溝部７４２ａが形成される。 The sliding ring 726 of the fifth embodiment is different from the sliding ring 626 shown in FIG. 13 in the number and arrangement of the connecting portions 782. The sliding ring 726 has an annular portion 742, a first elastic piece 744a and a second elastic piece 744b. As shown in FIG. 19A, an annular groove portion 742a is formed on the inner peripheral surface of the annular portion 742.
　第１弾性片７４４ａおよび第２弾性片７４４ｂ（これらを区別しない場合「弾性片７４４」という）は、環状部７４２から径方向外向きに張り出し、軸方向において互いに逆方向に延出する。 The first elastic piece 744a and the second elastic piece 744b (referred to as "elastic piece 744" when these are not distinguished) project radially outward from the annular portion 742 and extend in opposite directions in the axial direction.
　連結部７８２は、弾性片７４４の先端部７８０側と環状部７４２とを連結する。これにより、弾性片７４４の先端部８０および基端部８１が環状部７４２に連結される。連結部７８２は、弾性片７４４の両側に一対設けられる。連結部７８２が弾性片７４４の本体７７９の両側を環状部７４２に連結することで、組み付け時に第１弾性片７４４ａおよび第２弾性片７４４ｂの一方がめくれた状態で組み付けられることを抑えることができる。 The connecting portion 782 connects the tip portion 780 side of the elastic piece 744 and the annular portion 742. As a result, the tip portion 80 and the base end portion 81 of the elastic piece 744 are connected to the annular portion 742. A pair of connecting portions 782 are provided on both sides of the elastic piece 744. By connecting both sides of the main body 779 of the elastic piece 744 to the annular portion 742, the connecting portion 782 can prevent one of the first elastic piece 744a and the second elastic piece 744b from being assembled in a turned-up state at the time of assembly. ..
　図１９（ａ）および図１９（ｂ）に示すように、連結部７８２は、湾曲して形成され、本体７７９より薄く形成され、撓みやすくなっている。これにより、弾性片７４４の本体７７９より先に連結部７８２が撓むため、弾性片７４４の制振機能を発揮しやすくできる。 As shown in FIGS. 19 (a) and 19 (b), the connecting portion 782 is formed in a curved shape, is formed thinner than the main body 779, and is easily bent. As a result, the connecting portion 782 bends before the main body 779 of the elastic piece 744, so that the vibration damping function of the elastic piece 744 can be easily exerted.
　図２０（ａ）は、第６実施例の摺動リング８２６の斜視図であり、図２０（ｂ）は、図２０（ａ）に示す摺動リング８２６の線分Ｅ－Ｅ断面図である。第６実施例の摺動リング８２６は、図１３に示す摺動リング６２６と比べて、複数の弾性片８４４が周方向に並んで配置される点は同じであるが、弾性片８４４の形状が異なる。第６実施例の弾性片８４４は、周方向の両端部が環状部８４２に連結されているのに対し、図１３に示す弾性片６４４は、軸方向の上下端部が環状部６４２に連結されている。 20 (a) is a perspective view of the sliding ring 826 of the sixth embodiment, and FIG. 20 (b) is a sectional view taken along line EE of the sliding ring 826 shown in FIG. 20 (a). .. The sliding ring 826 of the sixth embodiment is the same as the sliding ring 626 shown in FIG. 13 in that a plurality of elastic pieces 844 are arranged side by side in the circumferential direction, but the shape of the elastic pieces 844 is the same. different. In the elastic piece 844 of the sixth embodiment, both ends in the circumferential direction are connected to the annular portion 842, whereas in the elastic piece 644 shown in FIG. 13, the upper and lower ends in the axial direction are connected to the annular portion 642. ing.
　摺動リング８２６は、環状部８４２と、弾性片８４４とを有する。弾性片８４４は、両持ち片であり、壁部３２に当接して撓み可能な本体８７９と、本体８７９の周方向の両端部を環状部８４２にそれぞれ連結する連結部８８２とを有する。本体８７９は、円弧状に形成され、環状部８４２から離れている。そのため、弾性片８４４が径方向内向きに撓みやすい。 The sliding ring 826 has an annular portion 842 and an elastic piece 844. The elastic piece 844 is a double-sided piece and has a main body 879 that can abut and bend in contact with the wall portion 32, and a connecting portion 882 that connects both ends of the main body 879 in the circumferential direction to the annular portion 842, respectively. The main body 879 is formed in an arc shape and is separated from the annular portion 842. Therefore, the elastic piece 844 tends to bend inward in the radial direction.
　図２０（ｂ）に示すように、本体８７９は、一対のテーパ面８７９ａを外周面に有し、外周面の中央部８７９ｂが突出したテーパ状に形成される。弾性片８４４の外周面は、軸方向の上下に対称な一対のテーパ面８７９ａを有するため、ピストン２４が進退するときにいずれかのテーパ面８７９ａが壁部３２に接触することができる。 As shown in FIG. 20B, the main body 879 has a pair of tapered surfaces 879a on the outer peripheral surface, and the central portion 879b of the outer peripheral surface is formed in a tapered shape so as to protrude. Since the outer peripheral surface of the elastic piece 844 has a pair of tapered surfaces 879a symmetrical vertically in the axial direction, any of the tapered surfaces 879a can come into contact with the wall portion 32 when the piston 24 moves forward and backward.
　図２１（ａ）は、第７実施例の摺動リング９２６の斜視図であり、図２１（ｂ）は、図２１（ａ）に示す摺動リング９２６の線分Ｆ－Ｆ断面図である。第７実施例の摺動リング９２６は、図２０（ａ）に示す摺動リング８２６と比べて、両持ち片である点は同じであるが、弾性片９４４の連結部９８２の形状が異なる。 21 (a) is a perspective view of the sliding ring 926 of the seventh embodiment, and FIG. 21 (b) is a sectional view taken along line FF of the sliding ring 926 shown in FIG. 21 (a). .. The sliding ring 926 of the seventh embodiment is the same as the sliding ring 826 shown in FIG. 20A in that it is a double-sided piece, but the shape of the connecting portion 982 of the elastic piece 944 is different.
　弾性片９４４は、周方向に並んで複数形成され、環状部９４２の径方向外向きに張り出し、径方向に撓み可能である。弾性片９４４は、円弧状の本体９７９と、本体９７９を環状部９４２に連結する連結部９８２とを有する。本体９７９の周方向の両端は、連結部９８２により環状部９４２にそれぞれ連結されている。 A plurality of elastic pieces 944 are formed side by side in the circumferential direction, and the annular portion 942 projects outward in the radial direction and can be flexed in the radial direction. The elastic piece 944 has an arc-shaped main body 979 and a connecting portion 982 that connects the main body 979 to the annular portion 942. Both ends of the main body 979 in the circumferential direction are connected to the annular portion 942 by the connecting portion 982, respectively.
　連結部９８２は、弾性片９４４の両端にそれぞれ一対設けられ、一対の連結部９８２は、軸方向の上下に分かれて配置される。連結部９８２は、板状に形成され、中央が軸方向に屈曲して形成される。この屈曲により、連結部９８２が径方向に潰れるように撓みやすくなる。 A pair of connecting portions 982 are provided at both ends of the elastic piece 944, and the pair of connecting portions 982 are arranged separately at the top and bottom in the axial direction. The connecting portion 982 is formed in a plate shape, and the center is bent in the axial direction. This bending makes it easier for the connecting portion 982 to bend so as to collapse in the radial direction.
　本発明は上述の各実施例に限定されるものではなく、当業者の知識に基づいて各種の設計変更等の変形を各実施例に対して加えることも可能であり、そのような変形が加えられた実施例も本発明の範囲に含まれうる。 The present invention is not limited to each of the above-described embodiments, and modifications such as various design changes can be added to each embodiment based on the knowledge of those skilled in the art, and such modifications are added. The examples given may also be included in the scope of the present invention.
　本発明は、ピストンの進退動作によって運動エネルギーを吸収し、摩擦などで熱エネルギーに変換し、振動を減衰する制振装置に関する。 The present invention relates to a vibration damping device that absorbs kinetic energy by moving the piston forward and backward, converts it into heat energy by friction, etc., and attenuates vibration.
　１０　制振装置、　２０　固定部、　２２　カバー、　２４　ピストン、　２６　摺動リング、　２８　コイルばね、　３０　台座部、　３２　壁部、　３４　突部、　３５　段差部、　３６　筒部、　３８　弾性係止部、　４０　挿通孔、　４２　環状部、　４４ａ　第１弾性片、　４４ｂ　第２弾性片、　４６　フランジ部、　４８　軸部、　５０　抜け止め部、　５２　縮径部、　５４　凹部、　５６　当接部、　５８　傘状部、　６０　嵌合部、　６２　凸部、　６４　制限部、　６６　環状突部、　７０　突出部、　７９　本体、　８０　先端部、　８１　基端部、　８２　連結部、　８３　開口部、　６２６　摺動リング、　６４４ａ　第１弾性片、　６４４ｂ　第２弾性片。 10 anti-vibration device, 20 fixed part, 22 cover, 24 piston, 26 sliding ring, 28 coil spring, 30 pedestal part, 32 wall part, 34 protrusion part, 35 step part, 36 cylinder part, 38 elastic locking part, 40 insertion hole, 42 annular part, 44a first elastic piece, 44b second elastic piece, 46 flange part, 48 shaft part, 50 retaining part, 52 reduced diameter part, 54 recess, 56 contact part, 58 umbrella-shaped part , 60 fitting part, 62 convex part, 64 limiting part, 66 annular protrusion, 70 protruding part, 79 main body, 80 tip part, 81 base end part, 82 connecting part, 83 opening, 626 sliding ring, 644a 1 elastic piece, 644b 2nd elastic piece.

Claims (11)

  1. 　第１部材および第２部材に介在して前記第１部材に対する前記第２部材の振動を抑制する制振装置であって、
    　前記第１部材および前記第２部材の一方に固定する固定部であって、挿通孔を有する台座部と、前記台座部に立設する壁部と、を有する固定部と、
    　前記挿通孔に挿通され、進退可能に設けられるピストンであって、前記第１部材および前記第２部材の他方に当接可能に設けられた当接部を有するピストンと、
    　前記ピストンの進退に応じて前記壁部または前記ピストンに摺動する摺動リングと、を備え、
    　前記摺動リングは、
    　前記ピストンおよび前記壁部の間に配置される環状部と、
    　前記環状部から径方向外向きまたは径方向内向きに張り出す弾性片と、を有し、
    　前記弾性片は、前記壁部または前記ピストンに摺動して熱エネルギーを発生させることを特徴とする制振装置。     A vibration damping device that suppresses vibration of the second member with respect to the first member by interposing between the first member and the second member.
    A fixing portion that is fixed to one of the first member and the second member and has a pedestal portion having an insertion hole and a wall portion erected on the pedestal portion.
    A piston that is inserted into the insertion hole and is provided so as to be able to advance and retreat, and has a contact portion that is provided so as to be able to contact the other of the first member and the second member.
    A sliding ring that slides on the wall portion or the piston according to the advancement and retreat of the piston is provided.
    The sliding ring
    An annular portion arranged between the piston and the wall portion,
    It has an elastic piece that projects radially outwardly or radially inward from the annular portion.
    The elastic piece is a vibration damping device characterized in that it slides on the wall portion or the piston to generate heat energy.
  2. 　前記ピストンは、大径部と、前記大径部より小径で前記台座部側に形成された小径部と、を有し、
    　前記大径部は、前記摺動リングに環囲され、
    　前記小径部は、前記挿通孔に挿通されることを特徴とする請求項１に記載の制振装置。     The piston has a large-diameter portion and a small-diameter portion having a diameter smaller than that of the large-diameter portion and formed on the pedestal portion side.
    The large diameter portion is surrounded by the sliding ring and is surrounded by the sliding ring.
    The vibration damping device according to claim 1, wherein the small diameter portion is inserted into the insertion hole.
  3. 　前記弾性片は、前記ピストンの軸方向において互いに逆方向に延出する第１弾性片および第２弾性片を含むことを特徴とする請求項１または２に記載の制振装置。 The vibration damping device according to claim 1 or 2, wherein the elastic piece includes a first elastic piece and a second elastic piece extending in opposite directions in the axial direction of the piston.
  4. 　前記弾性片は、周方向に離れて複数設けられることを特徴とする請求項１から３のいずれかに記載の制振装置。 The vibration damping device according to any one of claims 1 to 3, wherein a plurality of the elastic pieces are provided apart from each other in the circumferential direction.
  5. 　前記壁部は、筒状に形成され、その内壁面には前記台座部に向かうにつれて張り出すように形成される傾斜面を有することを特徴とする請求項１から４のいずれかに記載の制振装置。 The control according to any one of claims 1 to 4, wherein the wall portion is formed in a tubular shape, and the inner wall surface thereof has an inclined surface formed so as to project toward the pedestal portion. Vibration device.
  6. 　前記壁部は、前記ピストンを環囲し、内壁面の間隔が一定の平行面を有し、
    　前記平行面は、前記傾斜面より前記台座部側に位置することを特徴とする請求項５に記載の制振装置。     The wall portion surrounds the piston and has parallel surfaces having a constant inner wall surface spacing.
    The vibration damping device according to claim 5, wherein the parallel surface is located closer to the pedestal portion than the inclined surface.
  7. 　前記ピストンの外面または前記壁部の内壁面には、周方向に離れて配置される複数の突出部が形成され、
    　複数の前記突出部は、前記弾性片と周方向にずれて位置することを特徴とする請求項４に記載の制振装置。     A plurality of protrusions arranged apart from each other in the circumferential direction are formed on the outer surface of the piston or the inner wall surface of the wall portion.
    The vibration damping device according to claim 4, wherein the plurality of protruding portions are positioned so as to be displaced from the elastic piece in the circumferential direction.
  8. 　第１部材および第２部材に介在して前記第１部材に対する前記第２部材の振動を抑制する制振装置であって、
    　前記第１部材および前記第２部材の一方に固定する固定部であって、挿通孔を有する台座部と、前記台座部に立設する壁部と、を有する固定部と、
    　前記挿通孔に挿通され、進退可能に設けられるピストンであって、前記第１部材および前記第２部材の他方に当接可能に設けられた当接部を有するピストンと、
    　前記ピストンの進退に応じて前記壁部または前記ピストンに摺動する摺動リングと、を備え、
    　前記摺動リングは、
    　前記ピストンおよび前記壁部の間に配置される環状部と、
    　前記環状部から径方向外向きまたは径方向内向きに張り出す弾性片と、を有し、
    　前記弾性片は、前記ピストンの軸方向において互いに逆方向に延出する第１弾性片および第２弾性片を含むことを特徴とする制振装置。     A vibration damping device that suppresses vibration of the second member with respect to the first member by interposing between the first member and the second member.
    A fixing portion that is fixed to one of the first member and the second member and has a pedestal portion having an insertion hole and a wall portion erected on the pedestal portion.
    A piston that is inserted into the insertion hole and is provided so as to be able to advance and retreat, and has a contact portion that is provided so as to be able to contact the other of the first member and the second member.
    A sliding ring that slides on the wall portion or the piston according to the advancement and retreat of the piston is provided.
    The sliding ring
    An annular portion arranged between the piston and the wall portion,
    It has an elastic piece that projects radially outwardly or radially inward from the annular portion.
    The elastic piece is a vibration damping device including a first elastic piece and a second elastic piece extending in opposite directions in the axial direction of the piston.
  9. 　前記弾性片は、一端部が前記環状部に連結される本体と、前記本体の他端部と前記環状部とを連結する連結部を有することを特徴とする請求項１から８のいずれかに記載の制振装置。 The elastic piece according to any one of claims 1 to 8, wherein the elastic piece has a main body whose one end is connected to the annular portion, and a connecting portion which connects the other end of the main body and the annular portion. The described vibration damping device.
  10. 　前記連結部は、前記弾性片の本体より撓みやすく形成されることを特徴とする請求項９に記載の制振装置。 The vibration damping device according to claim 9, wherein the connecting portion is formed so as to be more flexible than the main body of the elastic piece.
  11. 　前記連結部と前記環状部との連結位置は、前記連結部と前記弾性片との連結位置より、前記弾性片の基端側に位置することを特徴とする請求項９または１０に記載の制振装置。 The control according to claim 9 or 10, wherein the connecting position between the connecting portion and the annular portion is located closer to the proximal end side of the elastic piece than the connecting position between the connecting portion and the elastic piece. Vibration device.
PCT/JP2020/037844 2019-10-17 2020-10-06 Vibration suppressing device WO2021075311A1 (en)

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DE102022201692A1 (en) 2022-02-18 2023-08-24 Volkswagen Aktiengesellschaft Flap buffer for a motor vehicle and method for installing such a flap buffer

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JPS5684160U (en) * 1979-12-04 1981-07-07
JPH06137438A (en) * 1992-10-29 1994-05-17 Sanden Shoji Kk Annular seal packing
JP2001324026A (en) * 2000-05-15 2001-11-22 Mitsubishi Cable Ind Ltd Shaft seal
JP2005009538A (en) * 2003-06-17 2005-01-13 Hitachi Home & Life Solutions Inc Vibration damper
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