WO2023074647A1 - ダンパー装置 - Google Patents

ダンパー装置 Download PDF

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Publication number
WO2023074647A1
WO2023074647A1 PCT/JP2022/039601 JP2022039601W WO2023074647A1 WO 2023074647 A1 WO2023074647 A1 WO 2023074647A1 JP 2022039601 W JP2022039601 W JP 2022039601W WO 2023074647 A1 WO2023074647 A1 WO 2023074647A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
rotor
housing
soft member
damper device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/039601
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
淳 斎藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Piolax Inc
Original Assignee
Piolax Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Piolax Inc filed Critical Piolax Inc
Priority to JP2023556443A priority Critical patent/JP7536198B2/ja
Publication of WO2023074647A1 publication Critical patent/WO2023074647A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
    • F16F7/06—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together in a direction perpendicular or inclined to the axis of rotation

Definitions

  • the present invention relates to a damper device that exerts a damping force by sliding a soft member provided between a housing and a rotor.
  • Patent Document 1 discloses a rotary type rotor including a housing, a rotor housed in a housing chamber of the housing, and an O-ring made of an annular elastic material with a silicon-coated surface for braking the rotation of the rotor with respect to the housing.
  • a damper is disclosed.
  • An object of the present invention is to provide a damper device capable of exerting a damping force according to the relative rotational speed of the housing and rotor.
  • a damper device includes a housing, a rotor rotatably inserted into the housing, and a soft member provided between the housing and the rotor.
  • the housing has an inner cylindrical portion that is formed in a cylindrical shape inside.
  • the rotor has an outer cylindrical portion that faces the inner cylindrical portion and is rotatable relative to the inner cylindrical portion.
  • a groove portion is formed in one of the inner cylinder portion and the outer cylinder portion, and the groove portion has a groove wall portion that intersects in an orthogonal direction perpendicular to the axial direction.
  • the soft member is disposed in the groove and slides against the other of the inner and outer cylinders while being pressed against the groove wall when the inner and outer cylinders rotate relative to each other.
  • FIG. 1 is a perspective view of a damper device of an embodiment; FIG. It is an exploded view of a damper device.
  • FIG. 4 is a perspective view of the rotor and soft member in an attached state;
  • FIG. 2 is a cross-sectional view of the damper device shown in FIG. 1 taken along line AA;
  • FIG. 2 is a cross-sectional view of the damper device shown in FIG. 1 taken along the line BB.
  • FIG. 1 is a perspective view of the damper device 10 of the embodiment.
  • the damper device 10 is attached to, for example, a handle device provided above the door of the passenger compartment, and applies a damping force to the rotational movement of the handle.
  • the handle device has a fixed body fixed to the vehicle body, a handle rotatable with respect to the fixed body, and a damper device 10 interposed between the fixed body and the handle.
  • the damper device 10 may be used not only for the handle device but also for damping the opening/closing operation of the cover of a glove box or a console box. That is, the damper device 10 is provided on a mounting member having a fixed body and a rotating body, and applies a damping force to the rotational movement of the rotating body.
  • the damper device 10 includes a cylindrical housing 20, a rotor 22 rotatably inserted into the housing 20, and a soft member (not shown) interposed between the housing 20 and the rotor 22.
  • the damper device 10 exerts a damping force when the housing 20 and the rotor 22 rotate relative to each other.
  • the damper device 10 does not use viscous fluid to obtain a damping force, and can be manufactured with a simple configuration, so that it can be manufactured at low cost.
  • FIG. 2 is an exploded view of the damper device 10.
  • FIG. 3 is a perspective view of the rotor 22 and the soft member 24 in an attached state.
  • the housing 20 has an inner cylindrical portion 30, an opening portion 32, a connecting portion 34, a recess portion 36, and a bottom portion (not shown).
  • the inner cylindrical portion 30 is formed in a cylindrical shape on the inner peripheral surface of the housing 20 and is uniformly curved.
  • the opening 32 opens one end of the housing 20 in the axial direction C and is capable of receiving the rotor 22 .
  • the axial direction C is a direction along the central axis of the inner cylindrical portion 30 and the rotor 22, and is parallel to the rotation axis when the housing 20 and the rotor 22 rotate relative to each other.
  • the orthogonal direction S is a direction orthogonal to the axial direction C and a direction along a plane orthogonal to the axial direction C. As shown in FIG.
  • the connecting part 34 is formed so as to protrude from the outer peripheral surface of the housing 20, is connected to one of the fixed body and the rotating body, and receives torque input.
  • the recess 36 is formed in an annular recess in the inner peripheral surface of the housing 20 and positioned on the opening 32 side. The recess 36 engages the rotor 22 to prevent the rotor 22 from coming off.
  • the rotor 22 is formed in a cylindrical shape and has a through hole in the center.
  • the rotor 22 has an outer cylindrical portion 40 , grooves 42 , connecting portions 44 and projections 46 .
  • the outer cylindrical portion 40 is formed on the outer peripheral surface of the rotor 22 .
  • the groove portion 42 is recessed in the outer cylinder portion 40 and formed over the entire circumference of the outer cylinder portion 40 to hold the soft member 24 .
  • the groove portion 42 includes a groove wall portion 42a, a first groove portion 42b and a second groove portion 42c.
  • the first groove portion 42b extends in a direction intersecting with the axial direction C, extends in a direction intersecting with the orthogonal direction S, and is inclined on both sides.
  • the second groove portions 42c extend along the circumferential direction of the inner cylinder portion 30 and the outer cylinder portion 40, and are formed in pairs vertically apart in the axial direction C. As shown in FIG.
  • the circumferential direction of the inner cylinder portion 30 and the outer cylinder portion 40 is along the rotation direction of the rotor 22 .
  • the rotation direction of the rotor 22 is the direction in which any outer peripheral portion of the rotor 22 moves as the rotor 22 rotates.
  • the first grooves 42b and the second grooves 42c are alternately arranged in a row.
  • a pair of second grooves 42c separated vertically are connected to both ends of a pair of first grooves 42b provided in parallel. Accordingly, when the groove portion 42 is formed over the entire circumference of the outer cylinder portion 40, the inclination of the first groove portion 42b can be brought closer to the axial direction C. As shown in FIG.
  • the groove wall portion 42a is located on both side walls of the first groove portion 42b and crosses the orthogonal direction S orthogonal to the axial direction C. That is, the groove wall portion 42 a intersects the rotation direction of the rotor 22 .
  • the movement of the soft member 24 around the central axis of the rotor 22 can be restricted by the groove wall portion 42a.
  • the soft member 24 is formed in an annular shape and arranged so as to fit into the groove portion 42 .
  • the soft member 24 is softer than the housing 20 and rotor 22 and is made of rubber or viscoelastic material.
  • the soft member 24 shown in FIG. 2 has a shape that matches the groove 42, it may have a substantially perfect circular shape before being fitted into the groove 42, and may be an O-ring, for example.
  • the soft member 24 in the attached state, the soft member 24 has a shape corresponding to the groove portion 42 as shown in FIG. Since the soft member 24 is formed in an annular shape, the soft member 24 can be inserted into the housing 20 while being fitted in the groove 42 of the rotor 22, and the damper device 10 can be easily assembled. Also, by using an inexpensive O-ring, the manufacturing cost can be suppressed.
  • the soft member 24 is fitted into the groove 42 to form an inclined portion 24a.
  • the inclined portion 24a of the soft member 24 extends in a direction intersecting the axial direction C and in a direction intersecting the orthogonal direction S, and is inclined and formed on both sides. be.
  • FIG. 4 is a cross-sectional view of the damper device 10 shown in FIG. 1 taken along line AA.
  • the inner cylinder part 30 and the outer cylinder part 40 face each other and are relatively rotatable.
  • Rotor 22 is restricted in axial movement by bottom 38 of housing 20 . Further, the rotor 22 is prevented from coming off by engaging the concave portion 36 of the housing 20 with the convex portion 46 of the rotor 22 .
  • FIG. 4 shows the soft member 24 interfering with the inner cylindrical portion 30 and the groove portion 42
  • the soft member 24 is actually pressed by the inner cylindrical portion 30 and the groove portion 42 and deformed.
  • the diameter of the soft member 24 is set larger than the radial distance between the inner cylindrical portion 30 and the groove portion 42 .
  • FIG. 5 is a cross-sectional view of the damper device 10 shown in FIG. 1 taken along line BB.
  • the soft member 24' is indicated by broken lines when the rotor 22 rotates in the direction of the arrow.
  • the relative rotation of housing 20 and rotor 22 causes groove wall 42a to move toward soft member 24 and push groove wall 42a against soft member 24'.
  • the soft member 24' collides with the groove wall portion 42a and bends so as to be crushed, thereby increasing the sliding resistance. That is, when the inner tubular portion 30 and the outer tubular portion 40 rotate relative to each other, the soft member 24 ′ slides on the inner tubular portion 30 while being pressed against the groove wall portion 42 a and deformed so as to be crushed.
  • the soft member 24 is strongly pressed against the groove wall portion 42a as the speed of relative rotation increases, and is deformed so that the sliding resistance increases. Thereby, the torque generated by the damper device 10 can be increased as the speed of relative rotation between the inner cylinder portion 30 and the outer cylinder portion 40 increases.
  • the groove wall portion 42a intersects not only the orthogonal direction S but also the axial direction C.
  • the soft member 24 can be inclined in the same manner as the groove wall portion 42a, and can be brought into contact with the groove wall portion 42a from the side of the soft member 24. can be secured. Therefore, rolling of the rotor 22 can be suppressed.
  • the inclined portion 24a of the soft member 24 is pressed against the groove wall portion 42a and deformed when the inner cylinder portion 30 and the outer cylinder portion 40 rotate relative to each other.
  • the inclined portion 24 a is reliably pressed against the groove wall portion 42 a and can slide on the inner cylindrical portion 30 .
  • the first groove portion 42b can be steeply inclined, and the soft member 24 can be prevented from rotating together with the inner cylindrical portion 30.
  • the axial length of the outer cylindrical portion 40 is short, it is possible to prevent the soft member 24 from co-rotating with the inner cylindrical portion 30, and it is possible to set the axial length of the damper device 10 short. becomes.
  • the inclination angle ⁇ of the groove wall portion 42a with respect to the axial direction C may be set within the range of 20 degrees to 70 degrees, more preferably within the range of 30 degrees to 60 degrees. By setting the inclination angle ⁇ to 30 degrees or more, large bending of the soft member 24 is suppressed. It is possible to suppress the companionship with.
  • FIG. 6 is an exploded view of the damper device of the first modified example.
  • the damper device of the first modified example differs from the damper device 10 shown in FIG. 2 in the shape of the connecting portion.
  • the damper device of the first modification comprises a housing 120, a rotor 122 and a soft member 124.
  • FIG. FIG. 6 shows the soft member 124 fitted into the groove 142 of the rotor 122 .
  • the housing 120 has an inner cylinder portion 130 , an opening portion 132 , a connecting portion 134 , a bottom portion 138 and a shaft portion 139 .
  • One end of the inner cylindrical portion 130 is opened by an opening portion 132 and the other end is closed by a bottom portion 138 .
  • the connecting portion 134 projects radially outward and is formed into a flange shape.
  • the shaft portion 139 protrudes from the center of the bottom portion 138 .
  • the rotor 122 has an outer cylindrical portion 140 , a groove portion 142 , a connecting portion 144 and a shaft hole portion 149 .
  • the groove portion 142 is formed in the outer cylindrical portion 140 and has a groove wall portion 142a that intersects the axial direction C and the orthogonal direction S. As shown in FIG. Accordingly, it is possible to restrict the soft member 124 from co-rotating with the housing 120 .
  • the connecting portion 144 is formed in a gear shape and meshes with the gear of the mounting member.
  • a shaft hole portion 149 is formed in the center of the connecting portion 144 and receives the shaft portion 139 of the housing 120 .
  • the shaft portion 139 of the housing 120 and the shaft hole portion 149 of the rotor 122 are engaged with each other to prevent the rotor 122 from coming off.
  • FIG. 7 is a diagram for explaining the damper device 200 of the second modified example.
  • FIG. 7(a) is a side view of the rotor 222 and the soft member 224 of the second modified example
  • FIG. 7(b) is a sectional view of the damper device 200.
  • FIG. The damper device 200 of the second modified example differs from the damper device 10 shown in FIG. 2 in the shape of the groove portion 242 .
  • the rotor 222 has an outer cylindrical portion 240 , a groove portion 242 , a connecting portion 44 and a shaft hole portion 249 .
  • the groove portion 242 is formed not only on the outer cylindrical portion 240 but also on the axial end surface 241 of the rotor 222 .
  • the groove portion 242 has a groove wall portion 242a, a first groove portion 242b and a second groove portion 242c.
  • the first groove portion 242b extends in a direction intersecting with the axial direction C, extends in a direction intersecting with the orthogonal direction S, and is inclined on both sides.
  • the second grooves 242c are formed in the axial end face 241 and connected to both ends of the pair of first grooves 242b.
  • the first groove portion 242b and the second groove portion 242c form the groove portion 242 in a state of making one round.
  • the groove wall portion 242 a is formed in a wall shape on both sides of the first groove portion 242 b to restrict the movement of the soft member 224 . Since the groove portion 242 makes a full circle, the ring-shaped soft member 224 can be fitted. Further, by arranging the second groove portion 242c on the axial end surface 241, the inclination of the first groove portion 242b can be made steeper and closer to the axial direction S. As shown in FIG.
  • the housing 220 and the rotor 222 are prevented from coming off by engaging the shaft portion 239 and the shaft hole portion 249 together.
  • FIG. 8 is a perspective view of the rotor 322 and soft member 324 of the third modified example.
  • a rotor 322 and a soft member 324 of the third modification differ from the rotor 22 and soft member 24 shown in FIG.
  • a groove portion 342 of the rotor 322 is recessed in the outer cylindrical portion 340 and formed along the axial direction C.
  • the soft member 324 is formed in a plate shape so as to fit into the groove portion 342 .
  • the soft member 324 is pressed against the groove wall portion 342a of the groove portion 342 during relative rotation.
  • the groove portion 342 may be formed along the circumferential direction of the outer cylinder portion 340, and the soft member 324 may also be curved in an arc shape when viewed in the axial direction.
  • the groove portion 42 is formed in the outer cylindrical portion 40 of the rotor 22, but it is not limited to this aspect.
  • a groove may be recessed in the inner cylindrical portion 30 and may be fitted with the soft member 24 . That is, the soft member 24 is arranged in a groove formed in one of the inner tubular portion 30 and the outer tubular portion 40 and slides on the other of the inner tubular portion 30 and the outer tubular portion 40 .
  • the rotor 22 is formed in a substantially columnar shape, but the present invention is not limited to this, and a part of the outer cylindrical portion 40 of the rotor 22 may be cut out along the axial direction. . At least the outer cylindrical portion 40 of the rotor 22 has a curved surface facing the inner cylindrical portion 30 and a groove portion 42 on the curved surface.
  • the present invention relates to a damper device that exerts a damping force by sliding a soft member provided between a housing and a rotor.
  • damper device 20 housing, 22 rotor, 24 soft member, 24a inclined portion, 30 inner cylinder portion, 32 opening portion, 34 connection portion, 36 recess portion, 38 bottom portion, 40 outer cylinder portion, 42 groove portion, 42a groove wall portion, 42b first groove portion, 42c second groove portion, 44 connecting portion, 46 convex portion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Fluid-Damping Devices (AREA)
PCT/JP2022/039601 2021-10-28 2022-10-25 ダンパー装置 Ceased WO2023074647A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023556443A JP7536198B2 (ja) 2021-10-28 2022-10-25 ダンパー装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-176504 2021-10-28
JP2021176504 2021-10-28

Publications (1)

Publication Number Publication Date
WO2023074647A1 true WO2023074647A1 (ja) 2023-05-04

Family

ID=86157903

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Application Number Title Priority Date Filing Date
PCT/JP2022/039601 Ceased WO2023074647A1 (ja) 2021-10-28 2022-10-25 ダンパー装置

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JP (1) JP7536198B2 (https=)
WO (1) WO2023074647A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231037A (en) * 1939-11-30 1941-02-11 Lester M Taylor Vibration dampening device
JPH07238966A (ja) * 1994-02-28 1995-09-12 Shuji Matsumura ダンパ装置
JP2020003054A (ja) * 2018-07-02 2020-01-09 株式会社東芝 シール構造、シール方法及び液中機器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231037A (en) * 1939-11-30 1941-02-11 Lester M Taylor Vibration dampening device
JPH07238966A (ja) * 1994-02-28 1995-09-12 Shuji Matsumura ダンパ装置
JP2020003054A (ja) * 2018-07-02 2020-01-09 株式会社東芝 シール構造、シール方法及び液中機器

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Publication number Publication date
JP7536198B2 (ja) 2024-08-19
JPWO2023074647A1 (https=) 2023-05-04

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