WO2016194687A1 - Appareil amortisseur à fluide et dispositif muni d'un amortisseur - Google Patents

Appareil amortisseur à fluide et dispositif muni d'un amortisseur Download PDF

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Publication number
WO2016194687A1
WO2016194687A1 PCT/JP2016/065233 JP2016065233W WO2016194687A1 WO 2016194687 A1 WO2016194687 A1 WO 2016194687A1 JP 2016065233 W JP2016065233 W JP 2016065233W WO 2016194687 A1 WO2016194687 A1 WO 2016194687A1
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WO
WIPO (PCT)
Prior art keywords
case
cover
peripheral surface
fluid damper
damper device
Prior art date
Application number
PCT/JP2016/065233
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English (en)
Japanese (ja)
Inventor
直哉 三原
浩之 岩下
Original Assignee
日本電産サンキョー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電産サンキョー株式会社 filed Critical 日本電産サンキョー株式会社
Publication of WO2016194687A1 publication Critical patent/WO2016194687A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K13/00—Seats or covers for all kinds of closets
    • A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
    • A47K13/26—Mounting devices for seats or covers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect

Definitions

  • the present invention relates to a fluid damper device and a device with a damper in which a fluid is filled between a case and a rotating shaft.
  • a cover having a hole through which the rotating shaft passes is fixed to one end in the axial direction of the case.
  • a method using ultrasonic welding has been proposed. In such ultrasonic welding, a horn is brought into contact with the rear end surface in the cover insertion direction to oscillate ultrasonic waves, and the outer peripheral surface of the cover and the inner peripheral surface of the case overlapped when viewed from the axial direction. The cover is pushed into the case while melting (see Patent Document 1).
  • an object of the present invention is to provide a fluid damper device capable of appropriately fixing a cover to an end portion of a case constituting a damper chamber, and a damper-equipped device including the fluid damper device.
  • a fluid damper device includes a cylindrical case constituting a damper chamber, a rotating shaft inserted into the case, a fluid filled in the case, A cover having a hole through which the rotating shaft passes and fitted inside an end portion on one side in the axial direction of the case. The cover is applied to the inner peripheral surface of the case from the one side. A stepped portion is formed, and the outer peripheral surface of the cover and the inner peripheral surface of the case are welded on the one side from the stepped portion.
  • the cover since the outer peripheral surface of the cover and the inner peripheral surface of the case are welded, the cover can be fixed in the case. Moreover, since the step part with which a cover contact
  • a convex portion protruding from the step portion toward the other surface on the one side is formed, and the convex portion and the A mode in which the other surface is welded can be adopted.
  • the convex portion is formed in a spiral shape to constitute a screw, and the other surface is formed with a spiral groove into which the convex portion is fitted, and the cover includes the convex portion and the convex portion.
  • the screw is fixed by screwing with a spiral groove. According to this configuration, the fixing strength between the cover and the case in the axial direction is high. For this reason, even when the pressure in the damper chamber is excessively increased, it is difficult for the cover to be pushed out. Moreover, since the periphery of the cover is stopped by welding, it is possible to reliably prevent the cover from being displaced due to the cover turning inside the case.
  • the cover and the case are preferably made of the same resin material. According to such a configuration, welding can be reliably performed.
  • the outer diameter of the case is preferably such that the portion where the outer peripheral surface of the cover and the inner peripheral surface of the case are welded is smaller than the portion where the step portion is located. According to such a configuration, it is easy to understand where the horn for ultrasonic welding abuts on the outer peripheral surface of the case.
  • the cover is preferably located entirely within the case. According to this configuration, the axial dimension of the fluid damper device can be reduced.
  • a configuration in which an opening / closing member that rotates with respect to the device main body is attached to the rotating shaft can be employed.
  • the opening / closing member is, for example, at least one of a toilet seat and a toilet lid of a Western-style toilet.
  • the cover can be fixed in the case.
  • abuts from one side is formed in the internal peripheral surface of a case, the pushing amount in the case of a cover is controlled by a step part. For this reason, the pushing amount of the cover into the case is stabilized. Therefore, fluctuations in the volume of the damper chamber can be suppressed, so that the damper performance is stabilized.
  • the amount of pressing of the cover into the case is regulated by the stepped portion, it is possible to prevent the cover and the rotating shaft from being welded when welding the outer peripheral surface of the cover and the inner peripheral surface of the case. it can.
  • FIG. 3 is a longitudinal sectional view of the fluid damper device shown in FIG. 2.
  • FIG. 3 is an exploded perspective view of the fluid damper device shown in FIG. 2. It is the perspective view which looked at the valve body etc. of the fluid damper apparatus shown in FIG. 2 from the other side of the axial direction.
  • the direction in which the central axis of the rotation shaft 40 extends is the axis L direction
  • the side where the rotation shaft 40 protrudes from the case 20 in the axis L direction is the one side L1.
  • the side opposite to the side where the rotating shaft 40 protrudes from the case 20 will be described as the other side L2.
  • FIG. 1 is an explanatory diagram of a Western-style toilet unit 100 including a Western-style toilet 1 equipped with a fluid damper device 10 according to Embodiment 1 of the present invention.
  • FIG. 2 is a perspective view of the fluid damper device 10 according to Embodiment 1 of the present invention.
  • FIGS. 2A and 2B are perspective views of the fluid damper device 10 as viewed from one side L1 in the axis L direction.
  • FIG. 4 is a perspective view of the fluid damper device 10 as viewed from the other side L2 in the axis L direction.
  • the western toilet 1 includes a western-style toilet 1 (equipment with a damper) and a water tank 3.
  • the western toilet 1 includes a toilet body 2 (device body), a resin toilet seat 5 (opening / closing member), a resin toilet lid 6 (opening / closing member), a unit cover 7, and the like.
  • a fluid damper device 10 to be described later is built in the unit cover 7 as a toilet seat and a toilet lid.
  • the toilet seat 5 and the toilet lid 6 are connected to the toilet body 2 via the fluid damper device 10, respectively. Yes.
  • the fluid damper device 10 connected to the toilet seat 5 and the fluid damper device 10 connected to the toilet lid 6 can be of the same configuration, in the following description, the fluid damper device 10 is connected to the toilet seat 5.
  • the fluid damper device 10 will be mainly described.
  • the fluid damper device 10 has a cylindrical fluid damper device body 10a on the other side L2.
  • a shaft-like connecting portion 10b protrudes from the fluid damper device main body 10a to the one side L1, and the connecting portion 10b is connected to the toilet seat 5.
  • Such a fluid damper device 10 generates a force (load) against the toilet seat 5 when the toilet seat 5 is standing so as to fall on the toilet body 2 and reduces the speed at which the toilet seat 5 falls.
  • the connecting portion 10b has a flat surface 10c opposite to each other. The flat surface 10c prevents the toilet seat 5 from being idle around the connecting portion 10b.
  • FIG. 3 is a cross-sectional view of the fluid damper device 10 shown in FIG. 2, and FIGS. 3A, 3 ⁇ / b> B, and 3 ⁇ / b> C are the surfaces along the axis L at positions passing through the valve body 50.
  • FIG. 10 is a cross-sectional view when cutting 10, a cross-sectional view when the fluid damper device 10 is cut along a plane along the axis L at a position passing through the partitioning convex portion 23, and an enlarged cross-sectional view showing the vicinity of the cover 60.
  • 4 is a longitudinal sectional view of the fluid damper device 10 shown in FIG.
  • FIG. 2 is a sectional view of the fluid damper device 10 cut along a plane perpendicular to the axis L at a position passing through the valve body 50.
  • 5 is an exploded perspective view of the fluid damper device 10 shown in FIG. 2.
  • FIGS. 5 (a) and 5 (b) show the state in which the cover 60 is removed from the case 20, as viewed from one side L1 in the axis L direction.
  • FIG. 4 is an exploded perspective view and an exploded perspective view of a state in which a rotary shaft 40 and the like are removed from the case 20 as viewed from one side L1 in the axis L direction.
  • 6 is a perspective view of the valve body 50 and the like of the fluid damper device 10 shown in FIG. 2 as viewed from the other side L2 in the axis L direction.
  • the fluid damper device 10 includes a cylindrical case 20 having a bottom wall 21 on the other side L ⁇ b> 2 and a rotor 30 having the other side L ⁇ b> 2 disposed inside the case 20. And an annular cover 60 that closes the opening 29 of the case 20 on one side L1.
  • the cover 60 is formed with a hole 61 through which the rotary shaft 40 of the rotor 30 passes.
  • both the case 20 and the cover 60 are resin molded products made of the same resin material such as polybutylene terephthalate (PBT) or polyoxymethylene (POM).
  • the case 20 has a cylindrical body portion 22 extending from the outer peripheral edge of the bottom wall 21 toward the one side L1.
  • the body portion 22 has the same inner diameter in the circumferential direction.
  • a circular recess 210 is formed in the center of the bottom wall 21 so as to be recessed in the other side L ⁇ b> 2 and rotatably support the end portion 49 on the other side L ⁇ b> 2 of the rotating shaft 40 of the rotor 30.
  • Two partitioning projections 23 protrude radially inward from the inner peripheral surface 220 of the barrel 22.
  • the two partitioning convex portions 23 are formed at angular positions shifted by 180 ° in the circumferential direction.
  • the two partitioning projections 23 are connected to the bottom wall 21 at the end of the other side L2.
  • the partitioning convex portion 23 has a trapezoidal cross section, and the circumferential dimension (thickness) decreases from the radially outer side to the inner side.
  • the rotor 30 includes a rotating shaft 40 having the other side L2 in the axis L direction disposed inside the case 20, and a valve body 50 held by the rotating shaft 40.
  • the rotating shaft 40 is made of resin, and has a round bar-shaped first shaft portion 41 located inside the case 20 and a second shaft portion 42 extending on one side L1 from the first shaft portion 41. ing.
  • the first shaft portion 41 has a larger outer diameter than the end portion 49 on the other side L ⁇ b> 2 of the rotating shaft 40, and the second shaft portion 42 has a larger outer diameter than the first shaft portion 41.
  • the end portion 49 is formed in a cylindrical shape so that the resin remaining on the gate at the time of resin molding does not jump out.
  • the second shaft portion 42 may have an outer diameter smaller than that of the first shaft portion 41. Further, the end portion 49 may be an oval cylindrical portion.
  • a circular second flange portion 44 that is opposed to the first side L1 at a predetermined interval is formed.
  • an annular circumferential groove 45 is formed between the first flange portion 43 and the second flange portion 44. Therefore, if the O-ring 70 is attached to the circumferential groove 45 and the first shaft portion 41 of the rotating shaft 40 is inserted into the inside of the case 20, the O-ring 70 is included in the inner peripheral surface 220 of the body portion 22 of the case 20.
  • the compressed portion abuts against the portion 229 located on the other side L2, and the space between the case 20 and the rotary shaft 40 is sealed.
  • a space defined by the bottom wall 21 and the first flange portion 43 facing the first shaft portion 41 on one side L1 is sealed as the damper chamber 11 inside the case 20.
  • the damper chamber 11 is filled with a fluid 12 (viscous fluid) such as oil.
  • the fluid damper device 10 is configured by inserting the cover 60 between the second shaft portion 42 of the rotating shaft 40 and the body portion 22 of the case 20 and fixing the cover 60. At that time, an annular washer 75 (see FIG. 5B) is disposed between the cover 60 and the second flange portion 44 of the rotating shaft 40.
  • the end portion 49 on the other side L2 of the rotation shaft 40 is rotatably supported by the recess 210 of the bottom wall 21 of the case 20, and the second shaft portion 42 is located inside the hole 61 of the cover 60. It is rotatably supported. Moreover, a part of 2nd axial part 42 penetrates the hole 61 of the cover 60, and the connection part 10b is comprised.
  • valves protruding outward in the radial direction at two positions shifted by 180 ° in the circumferential direction.
  • a body support convex portion 46 is formed, and a valve body 50 is supported on each of the two valve body support convex portions 46.
  • Each of the two valve body supporting convex portions 46 extends in the axis L direction from the end of the other side L2 of the rotating shaft 40 to the first flange portion 43, and the two valve body supporting convex portions 46 are In either case, the end of one side L ⁇ b> 1 is connected to the first flange portion 43.
  • the valve body supporting convex portion 46 includes a first convex portion 461 projecting radially outward and a second convex portion projecting radially outward at a position adjacent to the first convex portion 461 in the second direction B. 462, and a valve body support groove 460 is formed between the first convex portion 461 and the second convex portion 462.
  • the edge part of one side L1 is connected with the 1st flange part 43 in all.
  • the valve body support groove 460 has an arc shape whose inner peripheral surface is curved over an angular range exceeding about 180 °, and the valve body 50 is supported by the valve body support groove 460.
  • the second convex portion 462 is wider in the circumferential direction than the first convex portion 461.
  • the distal end portion of the first convex portion 461 is located on the radially inner side from the distal end portion of the second convex portion 462.
  • the valve body supporting convex portion 46 has a circumferential width that is narrower on the radially inner side than on the radially outer side.
  • the valve body 50 is supported by the valve body support groove 460 so as to be rotatable around an axis parallel to the axis L, and protrudes radially outward from the base 51 and covers the first protrusion 461. And a distal end portion 52 having a convex cross section inclined toward the first direction A, and a radially outer portion of the distal end portion 52 is located on the radially outer side of the first convex portion 461 and the second convex portion 462. To do.
  • the valve body 50 extends in the direction of the axis L like the valve body supporting convex portion 46, and the end portion 56 on one side L ⁇ b> 1 of the valve body 50 is in contact with the first flange portion 43. For this reason, there is almost no gap between the valve body 50 and the first flange portion 43. Therefore, the fluid 12 does not pass between the valve body 50 and the first flange portion 43.
  • the end portion 57 on the other side L2 of the valve body 50 is positioned slightly on the one side L1 than the end portion 467 on the other side L2 of the valve body supporting convex portion 46.
  • the end surface 417 on the other side L2 of the first shaft portion 41 and the end 467 on the other side L2 of the valve body supporting convex portion 46 constitute a continuous surface.
  • a gap may exist between the end surface 417 of the first shaft portion 41 and the end portion 467 of the valve body supporting convex portion 46 and the bottom wall 21 of the case 20.
  • a first rib 16 (see FIG. 6) extending in the radial direction is formed on the end surface 417 on the other side L2 and the end portion 467 on the other side L2 of the convex part 46 for supporting the valve body.
  • the first rib 16 is in a state corresponding to the gap between the end surface 417 of the first shaft portion 41 and the end portion 467 of the valve body supporting convex portion 46 and the bottom wall 21 of the case 20. Until crushed. Therefore, the fluid 12 does not pass between the end surface 417 of the first shaft portion 41 and the bottom wall 21 and between the end surface 417 of the valve body supporting convex portion 46 and the bottom wall 21.
  • a slight gap may exist between the end face 236 on one side L1 of the partitioning convex portion 23 and the first flange portion 43 of the rotating shaft 40.
  • a second rib 17 (see FIG. 5B) extending in the radial direction is formed on the end surface 236.
  • the cover 60 is applied to the inner peripheral surface 220 of the case 20 from the one side L1.
  • a stepped portion 227 is formed in contact therewith.
  • an annular flat surface portion 651 is formed on the end surface 65 on the other side L2 of the cover 60 (see FIG. 3C).
  • the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded at a portion surrounded by a dotted line 90 (see FIG. 3C) on one side L1 from the step portion 227.
  • the ultrasonic welding horn is applied to the portion 28 indicated by the one-dot chain line in FIG. (Not shown) is contacted from the outside in the radial direction to apply ultrasonic vibration, and the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded.
  • a shallow concave portion 280 is formed at the portion of the outer peripheral surface 24 of the case 20 where the horn contacts, due to the contact of the horn.
  • the horn is brought into contact with two portions of the outer peripheral surface 24 of the case 20 that are separated in the circumferential direction, and the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded.
  • the concave portion 280 may not be formed depending on the contact state of the horn. Further, in this embodiment, the horn is brought into contact with two places that are separated from each other in the circumferential direction on the outer peripheral surface 24 of the case 20, but the horn may be brought into contact with one place or three or more places.
  • a convex portion that protrudes from the step portion 227 toward the other surface on the one side L1 is formed on one surface of the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20, and the convex portion and the other surface And are welded.
  • the convex portion is formed in a spiral shape to constitute a screw, and the other surface is formed with a spiral groove into which the convex portion is fitted, and the cover 60 is screwed by the convex portion and the spiral groove. It is fixed.
  • the outer peripheral surface 62 of the cover 60 is formed with a convex portion 66a that protrudes toward the inner peripheral surface 220 of the case 20 on one side L1 from the step portion 227, and the convex portion 66a and the inner peripheral surface 220 of the case 20 Is welded.
  • the convex portion 66a is spirally formed on the outer peripheral surface 62 of the cover 60 to form a screw
  • the inner peripheral surface 220 of the case 20 is formed with a spiral groove 226a into which the convex portion 66a is fitted.
  • the cover 60 is screwed and fixed to the case 20 by the convex portion 66a and the spiral groove 226a, and the convex portion 66a and the spiral groove 226a are welded in this state.
  • a male screw 66 (convex portion 66a) is formed on the outer peripheral surface 62 of the cover 60, while a female screw 226 (spiral groove 226a) is formed on a portion 228 of the inner peripheral surface 220 of the case 20 adjacent to the opening 29. Is formed. Therefore, after the cover 60 is screwed and fixed by the male screw 66 (convex portion 66a) and the female screw 226 (spiral groove 226a), the convex portion 66a and the spiral groove 226a are welded in this state.
  • the inner peripheral surface 220 of the case 20 is formed with a convex portion (226b) protruding toward the outer peripheral surface 62 of the cover 60 on one side L1 from the step portion 227, and the outer periphery of the convex portion 226b and the cover 60 is formed. It can also be considered that the surface 62 is welded. Further, on the inner peripheral surface 220 of the case 20, the convex portion 226 b is formed in a spiral shape to constitute a screw, and the outer peripheral surface 62 of the cover 60 is formed with a spiral groove 66 b into which the convex portion 226 b is fitted. It can be regarded as being.
  • the inner diameter of the portion 228 located on the one side L1 (the portion where the female screw 226 is formed) is larger than the inner diameter of the portion 229 located on the other side L2.
  • an annular step 227 facing the one side L1 is formed.
  • the cover 60 is a resin molded product, and a male screw 66 is also formed at the same time as the resin molding. Therefore, unlike the case where the male screw 66 is formed by cutting or the like, the end surface 65 on the other side L2 of the cover 60 is formed with an annular flat surface portion 651 extending continuously along the outer peripheral edge (see FIG. 3 (c)). For this reason, in this embodiment, when the cover 60 is fixed to the case 20, even if the radial width of the step portion 227 is narrow, the flat portion 651 of the cover 60 reliably contacts the step portion 227, and the case of the cover 60 The amount of pushing into 20 is reliably controlled.
  • the portion having the largest outer diameter in the direction of the axis L is a portion where the male screw 66 is formed. More specifically, the cover 60 has a constant outer diameter throughout the axis L direction, and a male thread 66 is formed on the outer peripheral surface 62 of the cover 60 over the entire axis L direction. Therefore, the entire cover 60 can be screwed to the case 20, and the cover 60 is entirely located inside the case 20 in a state where the cover 60 is screwed to the case 20. Therefore, the cover 60 does not protrude from the case 20 to the one side L1. Therefore, the dimension of the fluid damper device 10 in the direction of the axis L can be reduced.
  • concave portions 64 are formed at a plurality of locations in the circumferential direction.
  • the inner peripheral edge of the end surface 63 on the one side L1 of the cover 60 is formed with recesses 64 at three locations in the circumferential direction, and these recesses 64 are formed with a jig (not shown) when the cover 60 is screwed. ) And the cover 60 is rotated.
  • the case 20 and the cover 60 are resin molded products. For this reason, when the case 20 is molded, the female screw 226 and the like are formed at the same time, and when the cover 60 is molded, the male screw 66 and the recess 64 are formed at the same time.
  • the cover 60 having the hole 61 through which the rotary shaft 40 passes is fixed to the end portion 25 on the one side L1 in the axis L direction of the case 20 by welding. Therefore, the pressure in the damper chamber 11 (pressure in the case 20) is received by the cover 60 via the flange portions (the first flange portion 43 and the second flange portion 44) of the rotating shaft 40.
  • an annular step 227 with which the cover 60 abuts from one side L1 is formed on the inner peripheral surface 220 of the case 20, and on the one side L1 from the step 227, the outer peripheral surface 62 of the cover 60 and the case 20 The inner peripheral surface 220 is welded.
  • the cover 60 even if the dimension of the cover 60 varies, the pushing amount of the cover 60 into the case 20 can be stabilized. Therefore, fluctuations in the volume in the damper chamber 11 can be suppressed, so that the damper performance is stabilized. Further, since the amount of pressing of the cover 60 into the case 20 is regulated by the step portion 227, when the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded, the cover 60 and the rotary shaft 40 are It is possible to prevent the second flange portion 44 from being welded.
  • the case 20 is fixed to the case 20 by a male screw 66 formed on the outer peripheral surface 62 of the cover 60 and a female screw 226 formed on the inner peripheral surface 220 of the case 20.
  • the fixing strength in the direction of the axis L is high, and the cover 60 can be appropriately fixed to the case 20. Therefore, even when the pressure in the damper chamber 11 increases excessively, it is difficult for the cover 60 to be pushed out.
  • the periphery of the cover 60 with respect to the case 20 is stopped by welding the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20. Accordingly, it is possible to reliably prevent the cover 60 from turning inside the case 20 and shifting the position of the cover 60.
  • the case 20 and the cover 60 are resin molded products, the female screw 226 and the male screw 66 can be formed simultaneously when the case 20 and the cover 60 are molded. Therefore, the cost of the fluid damper device 10 can be reduced.
  • FIG. 7 is a cross-sectional view of a fluid damper device 10 according to a modification of the first embodiment of the present invention.
  • the basic configuration of the present embodiment is the same as that of the first embodiment, and therefore, common portions are denoted by the same reference numerals and description thereof is omitted.
  • the outer diameter of the case 20 is switched by the step-shaped switching unit 240, and the outer diameter of the case 20 is on the one side L ⁇ b> 1 from the switching unit 240. It has a small diameter.
  • the outer diameter D1 of the case 20 where the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded is smaller than the outer diameter D2 of the case 20 where the step portion 227 is located. It has become. According to such a configuration, there is an advantage that the location where the ultrasonic welding horn abuts on the outer peripheral surface 24 of the case 20 is easy to understand. Other configurations are the same as those in the first embodiment.
  • FIG. 8 is a cross-sectional view of the fluid damper device 10 according to the second embodiment of the present invention.
  • the basic configuration of the present embodiment is the same as that of the first embodiment, and therefore, common portions are denoted by the same reference numerals and description thereof is omitted.
  • the cover 60 is fixed to the inside of the case 20 with the male screw 66 and the female screw 226 and then welded.
  • the male screw 66 and the female screw 226 are not provided as shown in FIG.
  • the outer peripheral surface 62 of the cover 60 and the inner peripheral surface 220 of the case 20 are welded together.
  • the outer peripheral surface 62 of the cover 60 is formed with a convex portion 62 a that protrudes toward the inner peripheral surface 220 of the case 20 on one side L ⁇ b> 1 from the step portion 227.
  • the inner peripheral surface 220 is welded.
  • the convex part 62a is extended over the perimeter in one place of the axis line L direction.
  • the protrusions 62a may be formed at a plurality of locations in the axis L direction.
  • a convex portion that protrudes toward the outer peripheral surface 62 of the cover 60 on one side L1 from the step portion 227 is provided on the inner peripheral surface 220 of the case 20, and the convex portion and the outer peripheral surface of the cover 60 are provided. 62 may be welded. Other configurations are the same as those in the first embodiment.
  • the fluid damper device 10 to which the toilet seat 5 is connected is illustrated.
  • a lid opening / closing member rotatably attached to the washing machine main body (equipment main body), etc.
  • the present invention may be applied to the fluid damper device 10 connected to the fluid damper 10.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toilet Supplies (AREA)
  • Fluid-Damping Devices (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)

Abstract

L'invention concerne un dispositif amortisseur à fluide comportant un couvercle pouvant être fixé de manière optimale à une partie d'extrémité d'un boîtier qui fait partie d'une chambre d'amortissement, et un dispositif muni d'un amortisseur, ledit dispositif étant muni d'un dispositif amortisseur à fluide. Plus particulièrement, dans un dispositif amortisseur à fluide (10), un couvercle (60), muni d'un trou (61) apte à être traversé par un arbre tournant (40), est fixé à une partie d'extrémité (25) d'un boîtier cylindrique (20) qui fait partie d'une chambre d'amortissement. Le couvercle (60) est fixé au boîtier (20) au moyen d'une vis mâle (66) formée dans la surface périphérique externe (62) du couvercle (60) et d'une vis femelle (226) formée dans une surface périphérique interne (220) du boîtier (20). Une partie étagée (227), avec laquelle le couvercle (60) entre en contact à partir d'un côté L1, est formée dans la surface périphérique interne (220) du boîtier (20), et la surface périphérique externe (62) du couvercle (60) et la surface périphérique interne (220) du boîtier (20) sont soudées l'une à l'autre sur le côté L1 à partir de la partie étagée (227).
PCT/JP2016/065233 2015-05-29 2016-05-24 Appareil amortisseur à fluide et dispositif muni d'un amortisseur WO2016194687A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015110763A JP2016223538A (ja) 2015-05-29 2015-05-29 流体ダンパ装置およびダンパ付き機器
JP2015-110763 2015-05-29

Publications (1)

Publication Number Publication Date
WO2016194687A1 true WO2016194687A1 (fr) 2016-12-08

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JP2016223538A (ja) * 2015-05-29 2016-12-28 日本電産サンキョー株式会社 流体ダンパ装置およびダンパ付き機器
CN108852131B (zh) * 2017-05-12 2021-06-11 日本电产三协株式会社 流体阻尼装置及带阻尼的设备
US11179013B2 (en) 2017-05-12 2021-11-23 Nidec Sankyo Corporation Fluid damper device and apparatus with the damper
JP6285084B1 (ja) * 2017-05-12 2018-02-28 日本電産サンキョー株式会社 流体ダンパ装置およびダンパ付き機器

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JP2014009774A (ja) * 2012-06-29 2014-01-20 Nidec Sankyo Corp ダンパー装置

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