WO2009139332A1 - ばね - Google Patents
ばね Download PDFInfo
- Publication number
- WO2009139332A1 WO2009139332A1 PCT/JP2009/058683 JP2009058683W WO2009139332A1 WO 2009139332 A1 WO2009139332 A1 WO 2009139332A1 JP 2009058683 W JP2009058683 W JP 2009058683W WO 2009139332 A1 WO2009139332 A1 WO 2009139332A1
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- WO
- WIPO (PCT)
- Prior art keywords
- spring
- main body
- corner
- cylindrical
- load
- Prior art date
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Classifications
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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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/32—Belleville-type springs
Definitions
- the present invention relates to a spring that is provided between a first member and a second member and suppresses transmission of high-frequency vibration between the members, and more particularly to improvement of the shape of the spring.
- suppression technology for vibration transmission is required.
- As a technique for suppressing vibration transmission it is effective to set the natural frequency of a system composed of an object and a support sufficiently lower than a predetermined frequency band.
- As a method for this it is conceivable to reduce the spring constant of the support portion. In this case, however, there is a problem that if the spring constant is reduced, the amount of deflection becomes large and the spring becomes large.
- the disc spring when the disc spring is deformed so as to be substantially flat when a load is applied, the inner and outer peripheral edges of the disc spring slide against the mating member, and friction is generated. For this reason, when the use range of the disc spring is set to the range of the region A in FIG. 10, hysteresis shown in FIG. 11A occurs in the actual load characteristics. As a result, the substantial dynamic spring constant in the usage range of the disc spring is the inclination of the diagonal line l connecting the point P and the point Q in FIG. In this case, when the amplitude of the use range is reduced, the slope of the diagonal line l increases as shown in FIG. 11B, and the dynamic spring constant increases.
- the conventional disc spring has a problem that the transmission of high-frequency vibrations cannot be suppressed because the dynamic spring constant of the disc springs increases when a fine amplitude vibration such as high-frequency vibrations is input.
- Such a problem is serious in the disc spring of Patent Document 1 in which the bent portions provided at the inner peripheral edge and the outer peripheral edge are deformed so as to come into surface contact with the mating member when a load is applied. Therefore, in order to prevent the occurrence of hysteresis in the load characteristics, a technique of Patent Document 2 in which a low friction member is provided on at least one of the disc spring and the mating member is conceivable.
- the technique of Patent Document 2 since the low friction member is provided separately from the disc spring, the number of parts increases.
- an object of the present invention is to provide a spring capable of preventing the occurrence of hysteresis in load characteristics and adjusting the height without increasing the number of parts.
- the spring of the present invention is a spring provided between the first member and the second member, and is provided on at least one peripheral portion of the main body portion having a hole and the inner peripheral portion and the outer peripheral portion of the main body portion. And a corner portion formed at a boundary portion between the main body portion and the protruding portion, and the main body portion extends in a direction intersecting the direction of the pressing force from the first member and the second member.
- the protruding portion includes a contact portion that protrudes from the peripheral portion of the main body portion toward the member of the first member or the second member and abuts against the first member or the second member. It is characterized by being elastically deformable so as to change.
- the positional relationship between the contact portion of the protrusion and the first member and the second member is as follows. That is, when the protruding portion is provided on either the inner peripheral portion or the outer peripheral portion, the protruding portion is directed from the peripheral portion of the main body portion toward one member of the first member and the second member. A contact portion that protrudes and contacts there is provided. In addition, when the protrusion is provided on both the inner peripheral portion and the outer peripheral portion, the protrusion on the inner peripheral portion side is one of the first member and the second member from the inner peripheral portion of the main body portion.
- An abutting portion that abuts is provided.
- the main body portion extends in a direction intersecting the direction of the pressing force from the first member and the second member, and the protruding portion extends from the peripheral portion of the main body portion to the first member and the second member. It protrudes toward one of the members (hereinafter referred to as a mating member) and is in contact therewith.
- the corner portion formed at the boundary between the main body portion and the projecting portion can be elastically deformed so as to change the angle according to the pressing force from the counterpart member when a load is applied. In this case, since the corner is a portion formed at the boundary between the main body and the protruding portion in the positional relationship as described above, such a corner can be changed while the angle is changed when a load is applied.
- the external side here means the inside of the inner peripheral portion when the peripheral portion provided with the protruding portion is the inner peripheral portion, and the outer periphery when the peripheral portion provided with the protruding portion is the outer peripheral portion. It is outside the part.
- the corner portion can be elastically deformed when a load is applied, by appropriately setting the distance between the corner portion and the mating member in the projecting portion, the portion of the projecting portion in the vicinity of the mating member can be applied. Deformation can be prevented. Accordingly, since the sliding portion can be prevented from sliding with respect to the mating member, friction does not occur between the projecting portion and the mating member, and as a result, no hysteresis occurs in the load characteristics of the spring. Moreover, since the site
- the spring of the present invention can use various configurations.
- a cylindrical portion can be used as the protruding portion.
- the main body portion can have an inclined shape, a staircase shape, or a substantially S-shape from the inner peripheral portion toward the outer peripheral portion.
- the mating member can be provided with a stopper for preventing the protrusion from sliding on the member. In this aspect, it is possible to more effectively prevent the occurrence of hysteresis in the load characteristics of the spring.
- a slit can be formed in at least one of the main body portion and the protruding portion. In this aspect, the weight of the spring can be reduced.
- the corner portion formed at the boundary between the main body portion and the projecting portion can be elastically deformed when a load is applied, so that the projecting portion can be prevented from sliding relative to the mating member. Therefore, friction does not occur between the protrusion and the mating member, and as a result, no hysteresis occurs in the load characteristics of the spring. Moreover, since the site
- FIG. 1 represents the operating state of the right side portion of the spring of FIG. 1
- (A) is a side cross-sectional view of the spring before operation (dotted line) and during operation (solid line)
- (B) is the first during operation of the spring.
- It is an expanded sectional side view of a corner
- FIG. 1A and 1B show a configuration of a spring 1 according to an embodiment of the present invention.
- FIG. 1A is a perspective view
- FIG. 1B is a side sectional view of a right portion of the spring 1.
- FIG. 1B shows a state in which the spring 1 is installed between the first member 101 and the second member 102.
- the spring 1 includes a main body 10 having a hole 10A formed at the center, for example.
- the main body 10 is, for example, a conical portion that extends in a direction that intersects the direction of the pressing force from the first member 101 and the second member 102.
- the conical part inclines as it goes downward, for example, and has a function as a disc spring.
- the hole 10A has, for example, a circular shape.
- a first cylindrical portion 11 (protruding portion) that protrudes toward the first member 101 is provided on the inner peripheral portion of the main body portion 10.
- the upper end portion of the first cylindrical portion 11 is a contact portion that contacts the first member 101.
- a second cylindrical portion 12 (protruding portion) that protrudes toward the second member 102 is provided on the outer peripheral portion of the main body portion 10.
- a lower end portion of the second cylindrical portion 12 is a contact portion that contacts the second member 102.
- a first corner 13 is formed at the boundary between the main body 10 and the first cylindrical portion 11, and a second corner 14 is formed at the boundary between the main body 10 and the second cylindrical portion 12.
- the first corner portion 13 and the second corner portion 14 can be elastically deformed so as to change their angles according to the pressing force from the first member 101 and the second member 102.
- the first corner 13 and the second corner 14 can be formed by various methods.
- the first corner portion 13 and the second corner portion 14 are, for example, the first corner portion 13 and the second corner portion 14 are the boundary portions of the main body portion 10 and the first cylindrical portion 11 and the main body portion 10 and the second cylindrical portion 12.
- the boundary portion can be formed by bending. For example, it can be formed by welding the main body 10 and the first cylindrical part 11 and welding the main body 10 and the second cylindrical part 12.
- FIGS. 2A and 2B show the operating state of the spring 1.
- FIG. 2A is a side cross-sectional view of the spring 1 before operation (dotted line) and during operation (solid line)
- FIG. FIG. 3 is an enlarged side sectional view of a corner portion 13 and a second corner portion 14.
- FIG. 2 only the right side portion of the spring 1 is illustrated as in FIG.
- FIG. 3 is a graph showing load characteristics of the spring 1 of the present invention and the spring of the conventional example.
- the main body portion 10 extends in a direction crossing the direction of the pressing force from the first member 101, and the first cylindrical portion 11 is located inside the main body portion 10 above the spring 1. It protrudes from the periphery toward the first member 101 and abuts there.
- the first corner portion 13 formed at the boundary between the main body portion 10 and the first cylindrical portion 11 is elastically deformed so that the angle ⁇ changes according to the pressing force from the first member 101 when a load is applied. Can do.
- the first corner portion 13 is a part formed at the boundary portion between the main body portion 10 and the first cylindrical portion 11 having the positional relationship as described above, such a first corner portion 13 is a load. While changing the angle ⁇ at the time of application, it can move to the outside (the left side in the figure) of the inner periphery of the main body 10.
- the first corner portion 13 can be elastically deformed when a load is applied in this way, the first cylindrical portion 11 is not deformed on the first member 101 side when a load is applied (above the point S in FIG. 2B).
- the length of the first cylindrical portion 11 is appropriately set so that the first cylindrical portion 11 side portion can be prevented from being deformed.
- the second cylindrical portion 11 protrudes from the inner peripheral portion of the main body portion 10 toward the second member 102 and is in contact therewith.
- the second corner portion 14 having a function similar to that of the first corner portion 13 changes the angle ⁇ in accordance with the pressing force from the second member 102 during elastic deformation by applying a load while the main body portion 10. It is possible to move to the outer side (right side in the figure) of the outer peripheral portion.
- the second corner portion 14 can be elastically deformed when a load is applied, the second cylindrical portion 12 is not deformed on the second member 102 side (below the point T in FIG. 2B) when the load is applied.
- the second cylindrical portion 12 By appropriately setting the length of the second cylindrical portion 12 so as to have the side), deformation of the second member 102 side portion of the second cylindrical portion 12 can be prevented.
- part of the other member vicinity of the 1st cylindrical part 11 and the 2nd cylindrical part 12 is an undeformed part, even if it adjusts the height of the spring 1 by processing grinding
- the first cylindrical portion 11 and the second cylindrical portion 12 are provided as the protruding portions of the present invention, the inner and outer diameters of the spring 1 even if the first cylindrical portion 11 and the second cylindrical portion 12 are subjected to processing such as polishing. Does not change.
- a slit can be formed in at least one of the main body portion 10 and the first and second cylindrical portions 11 and 12.
- slits 21 and 22 are formed on the side surfaces of the first and second cylindrical portions 11 and 12.
- a slit 31 is formed in the main body 10.
- Such slits 21, 22, and 31 can be combined as appropriate, and the shapes thereof can be set as appropriate. In this aspect, the weight of the spring can be reduced.
- the main-body part 10 which makes the cone shape which inclines below toward an outer peripheral part from an inner peripheral part
- a main-body part uses various shapes. be able to.
- the spring 4 shown in FIG. 6 uses a main body 40 that has a stepped shape from the inner periphery toward the outer periphery.
- the staircase shape of the main body 40 has a plurality of steps including a vertical portion 41 and a horizontal portion 42.
- a corner portion 43 is formed at the boundary between the vertical direction portion 41 and the horizontal direction portion 42
- a corner portion 44 is formed at the boundary portion between the step portions
- the corner portions 43 and 44 are corner portions of the above embodiment. 13 and 14 can be provided.
- a main body portion 50 having a substantially S shape is used in the spring 5 shown in FIG. 7 .
- a main body portion 60 having a conical shape inclined upward from the inner peripheral portion toward the outer peripheral portion is used in the spring 6 shown in FIG. 8.
- the height of the first cylindrical portion 11 and the second cylindrical portion 12 is high.
- the main body 10 may have a planar shape substantially orthogonal to the first cylindrical portion 11 and the second cylindrical portion 12.
- the 1st, 2nd cylindrical part 11 and 12 was used as a protrusion part of this invention, it is not limited to this, A protrusion can use various structures.
- the shape of the protruding portion is not limited to the cylindrical shape shown in the above embodiment, and various shapes such as a conical shape can be used.
- the cross section is not limited to a linear shape, and may be a curved shape such as a substantially S shape.
- a stopper can be formed on the first member 101 and the second member 102 with which the first cylindrical portion 101 and the second cylindrical portion 102 abut.
- the first member 101 and the second member 102 can be formed with the concave portions 101A and 102A engaging the first and second cylindrical portions 11 and 12 as stoppers.
- the stopper is not limited to the recesses 101A and 102A, and may be any fixing means for fixing the first cylindrical part 101 or the second cylindrical part 102, for example, and it goes without saying that various modifications are possible. In this aspect, the occurrence of hysteresis in the load characteristics of the spring 1 can be more effectively prevented.
- the first cylindrical portion 11 is protruded toward the first member 101 and brought into contact therewith, and the second cylindrical portion 12 is brought into contact with the second member 102.
- the second cylindrical portion 12 may be protruded toward the second member 102 and brought into contact therewith, and the second cylindrical portion 12 may be protruded toward the first member 101 and brought into contact therewith.
- the first cylindrical portion 11 and the second cylindrical portion 12 are formed on the inner peripheral portion and the outer peripheral portion of the main body portion, but only one of the first cylindrical portion 11 and the second cylindrical portion 12 is formed. Also good.
- angular part 14 is not limited to the shape of illustration, It can change into various shapes, such as a curved surface shape.
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Abstract
Description
以下、本発明の実施形態について図面を参照して説明する。図1は、本発明の一実施形態に係るばね1の構成を表し、(A)は斜視図、(B)は、ばね1の右側部分の側断面図である。図1(B)は、ばね1が第1部材101と第2部材102の間に設置されている状態を表している。
ばね1の動作について、おもに図2,3を参照して説明する。図2は、ばね1の動作状態を表し、(A)は、ばね1の動作前(点線)と動作時(実線)の側断面図であり、(B)は、ばね1の動作時の第1角部13および第2角部14の拡大側断面図である。なお、図2では、図1(B)と同様にばね1の右側部分のみを図示している。図3は、本発明例のばね1と従来例のばねの荷重特性を表すグラフである。
以上のように上記実施形態を挙げて本発明を説明したが、本発明は上記実施形態に限定されるものではなく、種々の変形が可能である。なお、以下の変形例では、上記実施形態と同様な構成要素には同符号を付し、その説明は省略している。
Claims (6)
- 第1部材と第2部材との間に設けられるばねにおいて、
孔部を有する本体部と、
前記本体部の内周部および外周部のうちの少なくとも一方の周部に設けられた突出部と、
前記本体部と前記突出部との境界部に形成された角部とを備え、
前記本体部は、前記第1部材および前記第2部材からの押圧力の方向に交差する方向に延在し、
前記突出部は、前記本体部の前記周部から前記第1部材および前記第2部材のいずれかの部材に向けて突出してそこに当接する当接部を備え、
前記角部は、その角度が前記押圧力に応じて変化するように弾性変形可能であることを特徴とするばね。 - 前記突出部は、円筒部であることを特徴とする請求項1に記載のばね。
- 前記当接部は、前記押圧力が変化しても、前記当接部が当接する前記部材に対して摺動しないことを特徴とする請求項1または2に記載のばね。
- 前記本体部は、その内周部から外周部に向かって、傾斜状、階段状、あるいは、略S字状をなしていることを特徴とする請求項1~3のいずれかに記載のばね。
- 前記本体部および前記突出部の少なくとも一方には、スリットが形成されていることを特徴とする請求項1~4のいずれかに記載のばね。
- 前記突出部が当接する前記部材には、前記当接部のその部材に対する摺動を防止するストッパが設けられていることを特徴とする請求項1~5のいずれかに記載のばね。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09746539.7A EP2287490B1 (en) | 2008-05-13 | 2009-05-08 | Spring |
US12/991,526 US8950739B2 (en) | 2008-05-13 | 2009-05-08 | Spring |
CN200980117087.8A CN102027258B (zh) | 2008-05-13 | 2009-05-08 | 弹簧 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008125398A JP4815469B2 (ja) | 2008-05-13 | 2008-05-13 | ばね |
JP2008-125398 | 2008-05-13 |
Publications (1)
Publication Number | Publication Date |
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WO2009139332A1 true WO2009139332A1 (ja) | 2009-11-19 |
Family
ID=41318702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/058683 WO2009139332A1 (ja) | 2008-05-13 | 2009-05-08 | ばね |
Country Status (5)
Country | Link |
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US (1) | US8950739B2 (ja) |
EP (1) | EP2287490B1 (ja) |
JP (1) | JP4815469B2 (ja) |
CN (1) | CN102027258B (ja) |
WO (1) | WO2009139332A1 (ja) |
Cited By (4)
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WO2011129208A1 (ja) * | 2010-04-13 | 2011-10-20 | 日本発條株式会社 | ばね |
WO2011148850A1 (ja) * | 2010-05-25 | 2011-12-01 | 日本発條株式会社 | サスペンション装置 |
WO2011158622A1 (ja) * | 2010-06-16 | 2011-12-22 | 日本発條株式会社 | ばね |
US8523153B2 (en) | 2008-12-22 | 2013-09-03 | Nhk Spring Co., Ltd. | Spring |
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JP2010206888A (ja) * | 2009-03-02 | 2010-09-16 | Nhk Spring Co Ltd | アクチュエータ |
JP5394904B2 (ja) * | 2009-12-04 | 2014-01-22 | 日本発條株式会社 | ばね |
JP2011220476A (ja) * | 2010-04-13 | 2011-11-04 | Nhk Spring Co Ltd | ばね |
DE112010005512T5 (de) * | 2010-04-21 | 2013-02-07 | Toyota Jidosha Kabushiki Kaisha | Momentbegrenzer und Leistungsübertragungsgerät |
DE102010038468A1 (de) * | 2010-07-27 | 2012-02-02 | Robert Bosch Gmbh | Hochdruckpumpe |
WO2013062555A2 (en) * | 2011-10-27 | 2013-05-02 | Mw Industries, Inc. | Coned-disc spring device, spring assembly, and methods of making the same |
US9400027B2 (en) * | 2012-03-23 | 2016-07-26 | Nhk Spring Co., Ltd. | Coned disc spring |
JP6044479B2 (ja) | 2013-07-18 | 2016-12-14 | 株式会社アドヴィックス | 防振構造体 |
WO2016081528A1 (en) | 2014-11-17 | 2016-05-26 | Bridging Medical, Llc | Bone compression systems |
WO2018038755A1 (en) * | 2016-08-25 | 2018-03-01 | Hong Wang | Adjustable electronic device mount |
US12078222B2 (en) * | 2018-10-02 | 2024-09-03 | Nhk Spring Co., Ltd. | Disc spring, disc spring device, and method for manufacturing disc spring |
USD1033644S1 (en) | 2019-09-11 | 2024-07-02 | Medline Industries, Lp | Deformable medical compression device |
US11510713B2 (en) | 2019-09-11 | 2022-11-29 | Medline Industries, Lp | Compression device, kit, and method |
US11974789B2 (en) | 2021-06-21 | 2024-05-07 | Medline Industries, Lp | Compression device, bone plate, bone plate assembly, kit, and method |
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- 2009-05-08 WO PCT/JP2009/058683 patent/WO2009139332A1/ja active Application Filing
- 2009-05-08 US US12/991,526 patent/US8950739B2/en active Active
- 2009-05-08 CN CN200980117087.8A patent/CN102027258B/zh active Active
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Cited By (9)
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US8523153B2 (en) | 2008-12-22 | 2013-09-03 | Nhk Spring Co., Ltd. | Spring |
WO2011129208A1 (ja) * | 2010-04-13 | 2011-10-20 | 日本発條株式会社 | ばね |
JP2011220477A (ja) * | 2010-04-13 | 2011-11-04 | Nhk Spring Co Ltd | ばね |
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JP2011245942A (ja) * | 2010-05-25 | 2011-12-08 | Nhk Spring Co Ltd | サスペンション装置 |
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Also Published As
Publication number | Publication date |
---|---|
CN102027258B (zh) | 2013-04-17 |
JP4815469B2 (ja) | 2011-11-16 |
US20110057368A1 (en) | 2011-03-10 |
EP2287490B1 (en) | 2018-07-11 |
US8950739B2 (en) | 2015-02-10 |
EP2287490A1 (en) | 2011-02-23 |
CN102027258A (zh) | 2011-04-20 |
EP2287490A4 (en) | 2013-06-26 |
JP2009275738A (ja) | 2009-11-26 |
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