WO2014208490A1 - U-shaped suspension - Google Patents

U-shaped suspension Download PDF

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Publication number
WO2014208490A1
WO2014208490A1 PCT/JP2014/066529 JP2014066529W WO2014208490A1 WO 2014208490 A1 WO2014208490 A1 WO 2014208490A1 JP 2014066529 W JP2014066529 W JP 2014066529W WO 2014208490 A1 WO2014208490 A1 WO 2014208490A1
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WO
WIPO (PCT)
Prior art keywords
shaped spring
shaped
fixing plate
holding mechanism
spring portion
Prior art date
Application number
PCT/JP2014/066529
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French (fr)
Japanese (ja)
Inventor
松田　真次
Original Assignee
株式会社松田技術研究所
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Publication of WO2014208490A1 publication Critical patent/WO2014208490A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • 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
    • F16F15/06—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 with metal springs
    • F16F15/073—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 with metal springs using only leaf springs
    • 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
    • F16F15/08—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 with rubber springs ; with springs made of rubber and metal
    • F16F15/085—Use of both rubber and metal springs
    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/023—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/11—Leaf spring
    • B60G2202/117—Leaf spring having a "C" form loaded parallel to its central axis

Definitions

  • the present invention relates to a suspension for mitigating shocks, vibrations and the like applied to a transported cargo.
  • Suspensions are used in vehicles and freight transport vehicles in order to mitigate shocks and vibrations transmitted from the ground and engines to passengers and mounted objects.
  • suspensions for vehicles and cargo vehicles Conventionally, metal suspensions and air suspensions have been known as suspensions for vehicles and cargo vehicles.
  • the metal suspension is a suspension using a metal coil spring (for example, see Patent Document 1).
  • An air suspension is a suspension formed by enclosing gas in a bag-shaped elastomer.
  • the metal suspension is configured such that the coil spring is deformed only in the axial direction. For this reason, the metal suspension has a disadvantage that it is difficult for the load to be dispersed due to the deformation of the spring, so that the shock to the shock and vibration in the horizontal direction tends to be insufficient.
  • the air suspension can perform sufficient buffering against shocks and vibrations in the horizontal direction and twist direction.
  • an air suspension requires an air compressor, the structure is complicated and expensive.
  • an electric locomotive is equipped with an air compressor for an air brake, but it is difficult to use it for an air suspension because of the capability of the air compressor.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an inexpensive suspension capable of obtaining a good buffering effect against omnidirectional shock and vibration.
  • a U-shaped suspension according to the present invention includes a plurality of U-shaped spring portions that are radially arranged and exhibit a substantially U shape in an unloaded state, and a plurality of U-shaped spring portions.
  • a first holding mechanism that holds each of the first end portions, and a second holding mechanism that is disposed to face the first holding mechanism and holds the second end portions of the plurality of U-shaped spring portions. It is characterized by providing.
  • the first and second holding mechanisms can freely move the first and second end portions of the U-shaped spring portion in a linear direction connecting the first and second end portions. It is desirable to hold such that
  • At least one of the first and second holding mechanisms includes an outer fixing plate facing the outer surface of the first and second ends of the U-shaped spring portion, and the first and second An inner fixing plate facing the inner side surface of the end of the first and second through holes provided in the first and second ends, and screwed to the outer fixing plate and the inner fixing plate A mechanism, and an interposition member disposed between the outer fixing plate and the inner fixing plate and abutting the first and second end portions against the outer fixing plate or the inner fixing plate.
  • the interposition member is preferably an annular member.
  • the first holding mechanism is a center block that contacts the second holding mechanism when the U-shaped spring portion is displaced by a predetermined amount in a direction in which the first and second end portions approach each other. It is desirable to provide.
  • the U-shaped spring portion is formed by overlapping a plurality of substantially U-shaped elastic materials.
  • the load is absorbed by the plurality of U-shaped spring portions arranged radially, the impact and vibration can be dispersed in all directions, and the structure is simple and inexpensive.
  • the overall height of the suspension can be shortened by using the U-shaped spring portion.
  • the U-shaped spring portion is held by holding the first and second end portions of the U-shaped spring portion so as to be freely movable in a linear direction connecting the first and second end portions. It is possible to suppress fatigue fracture.
  • the displacement of the U-shaped spring portion can be suppressed to a predetermined amount or less, and permanent deformation of the U-shaped spring portion can be prevented.
  • the U-shaped spring portion is formed by overlapping a plurality of substantially U-shaped elastic members, so that when an impact or vibration is applied to the U-shaped spring portion, A frictional force can be generated, and the impact and vibration can be attenuated by the frictional force.
  • a U-shaped spring portion having a desired spring constant is formed by stacking a plurality of elastic materials having a small thickness, the U-shaped spring portion having the same spring constant is replaced with a single elastic material having a large thickness. Compared with the case where it comprises, durability can be improved.
  • FIG. 1 is a perspective view schematically showing a structure of a U-shaped suspension according to a first embodiment.
  • 1 is a plan view schematically showing a structure of a U-shaped suspension according to a first embodiment.
  • FIG. 1 is a perspective view schematically showing a structure of a U-shaped suspension according to a first embodiment.
  • 1 is a plan view schematically showing a structure of a U-shaped suspension according to a first embodiment.
  • Embodiment 1 of the Invention A U-shaped suspension according to Embodiment 1 of the present invention will be described with reference to FIGS.
  • FIG. 1 to 3 schematically show the structure of a U-shaped suspension according to the first embodiment.
  • FIG. 1 is a perspective view
  • FIG. 2 is a plan view
  • FIG. 3 is a cross-sectional view taken along line AA in FIG.
  • It is. 4 schematically shows a U-shaped spring portion according to the first embodiment, where (a) is a side view and (b) is a rear view.
  • the U-shaped suspension 100 includes a plurality of (eight in this case) U-shaped spring portions 110. These U-shaped spring parts 110 are arranged radially.
  • the size of the U-shaped spring part 110 is not particularly limited.
  • the height H is 100 mm
  • the depth D is 200 mm
  • the width W is 20 mm
  • the plate pressure T is 4 mm
  • the curvature radius R is 50 mm (FIG. 4A ) And (b)).
  • the U-shaped spring part 110 can be manufactured, for example, by bending a steel plate (for example, JIS standard SK5) into a U shape at a high temperature, and further making the stress zero by quenching and annealing.
  • the U-shaped spring part 110 manufactured in this way has a U-shape even when there is no load.
  • a through hole 111 is formed at one end (here, the upper end 110a) of the U-shaped spring portion 110, and a through hole 112 is formed at the other end (here, the lower end 110b). ing.
  • the holding mechanism 120 corresponds to the “first holding mechanism” of the present invention, and holds the upper end portion 110 a of each U-shaped spring portion 110.
  • the holding mechanism 120 includes an outer fixing plate 121, an inner fixing plate 122, and a column ring 123.
  • the outer fixing plate 121 is formed of, for example, an aluminum alloy or the like, and is disposed so as to face the outer surface of one end portion of the U-shaped spring portion 110 (here, the upper surface of the upper end portion 110a). As shown in FIG. 3, a stepped portion 124 is provided below the outer edge portion of the outer fixing plate 121.
  • the outer fixing plate 121 includes a bolt insertion hole 121a disposed at the center and a plurality (eight in this case) of bolt insertion holes 121b disposed along the outer edge. Furthermore, a plurality (eight in this case) of mounting through holes 121c are provided inside the outer fixing plate 121 inside the bolt through holes 121b.
  • the inner fixing plate 122 is made of, for example, stainless steel, and is disposed so as to face the inner surface of one end portion of the U-shaped spring portion 110 (here, the lower surface of the upper end portion 110a). .
  • the inner fixing plate 122 includes bolt insertion holes 122a and 122b and mounting insertion holes 122c arranged at positions facing the bolt insertion holes 121a and 121b and the mounting insertion holes 121c.
  • the outer fixing plate 121 and the inner fixing plate 122 are arranged so that the central portions thereof are in contact with each other. Then, the bolt 125a is inserted into the bolt insertion holes 121a and 122a and is fastened and fixed by the nut 125b.
  • the step portion 124 of the outer fixing plate 121 is opposed to the outer edge portion of the inner fixing plate 122 with a predetermined space therebetween.
  • the upper end portion 110a of the U-shaped spring portion 110 is disposed.
  • a cylindrical collar 126a is inserted through the bolt insertion hole 121b of the outer fixing plate 121, the through hole 111 of the U-shaped spring portion 110, and the bolt insertion hole 122b of the inner fixing plate 122, respectively.
  • the upper end portion 110a of the U-shaped spring portion 110 is held by the holding mechanism 120 so as to be vertically movable.
  • the bolt 126b is inserted into the through hole of the collar 126a and is fastened and fixed by the nut 126c.
  • the bolt 126b and the nut 126c correspond to the “screw fixing mechanism” of the present invention.
  • the column ring 123 corresponds to the “intervening member” of the present invention, and is formed, for example, in an annular shape with steel, and is disposed between the U-shaped spring portion 110 and the inner fixing plate 122.
  • the upper end portion 110 a of the U-shaped spring portion 110 is held by the holding mechanism 120 in a state of being in contact with the column ring 123.
  • the mounting insertion holes 121c and 122c are used for fixing the U-shaped suspension 100 to, for example, a transport container.
  • the holding mechanism 130 corresponds to the “second holding mechanism” of the present invention, and holds the lower end portion 110b of each U-shaped spring portion 130.
  • the holding mechanism 130 includes an outer fixing plate 131, an inner fixing plate 132, and a column ring 133.
  • the outer fixing plate 131 is made of, for example, an aluminum alloy or the like, and is disposed so as to face the outer surface of the other end portion of the U-shaped spring portion 110 (here, the lower surface of the lower end portion 110b).
  • a stepped portion 134 is provided above the outer edge portion of the outer fixing plate 131.
  • the outer fixing plate 131 includes a bolt insertion hole 131a disposed at the center and a plurality (eight in this case) of bolt insertion holes 131b disposed along the outer edge. Further, a plurality (eight in this case) of mounting insertion holes 131c are provided on the inner side of the outer fixing plate 131 with respect to the bolt insertion holes 131b.
  • the inner fixing plate 132 is formed of, for example, stainless steel, and is disposed so as to face the inner surface of the other end of the U-shaped spring portion 110 (here, the upper surface of the lower end 110b).
  • the inner fixing plate 132 includes bolt insertion holes 132a and 132b and mounting insertion holes 132c arranged at positions facing the bolt insertion holes 131a and 131b and the mounting insertion holes 131c.
  • the outer fixing plate 131 and the inner fixing plate 132 are arranged so that the central portions thereof are in contact with each other. Then, the bolt 135a is inserted into the bolt insertion holes 131a and 132a and is fastened and fixed by the nut 135b.
  • the step portion 134 of the outer fixing plate 131 faces the outer edge portion of the inner fixing plate 132 with a predetermined space therebetween.
  • the lower end portion 110 b of the U-shaped spring portion 110 is disposed at the step portion 134.
  • a cylindrical collar 136a is inserted through the bolt insertion hole 131b of the outer fixing plate 131, the through hole 112 of the U-shaped spring portion 110, and the bolt insertion hole 132b of the inner fixing plate 132, respectively. Accordingly, the lower end portion 110b of the U-shaped spring portion 110 is held by the holding mechanism 130 so as to be vertically movable.
  • a bolt 136b is inserted into the through hole of the collar 136a and is fastened and fixed by a nut 136c.
  • the bolt 136b and the nut 136c correspond to the “screw fixing mechanism” of the present invention.
  • the column ring 133 corresponds to the “intervening member” of the present invention, and is formed, for example, in an annular shape with steel, and is disposed between the U-shaped spring portion 110 and the inner fixing plate 132.
  • the lower end portion 110 b of the U-shaped spring portion 110 is held by the holding mechanism 130 in a state of being in contact with the column ring 133.
  • the mounting insertion holes 131c and 132c are used for fixing the U-shaped suspension 100 to, for example, a transportation vehicle.
  • a center block 140 is provided on the lower center surface of the holding mechanism 120.
  • the center block 140 includes an aluminum block 141 and a buffer portion 142.
  • the aluminum block 141 is fixed to the inner fixing plate 122 of the holding mechanism 120 via the upper auxiliary plate 151 using bolts 125a.
  • the buffer portion 142 is formed of an elastic body such as rubber and is fixed to the lower surface of the aluminum block 142.
  • the distance between the center block 140 and the lower auxiliary plate 152 is 20 to 30 mm, for example.
  • the center block 140 abuts against the lower auxiliary plate 152 to prevent further displacement when the U-shaped spring portion 110 is greatly displaced due to excessive impact or vibration. Thereby, the permanent deformation by the displacement of the U-shaped spring part 110 exceeding an elastic limit point can be prevented.
  • FIG. 5 is a cross-sectional view conceptually showing a state in which the U-shaped spring portion 110 is displaced by impact or vibration.
  • the upper end portion 110a and the lower end portion 110b of the U-shaped spring portion 110 are held in contact with the column rings 123 and 133. For this reason, as shown in FIG. 5, when the U-shaped spring part 110 is displaced, the end parts 110a and 110b are inclined with the contact parts with the column rings 123 and 133 as fulcrums. Thereby, the load stress of the U-shaped spring part 110 is distributed over the entire curved portion of the U-shaped spring part 110, and the stress concentration is relaxed. As a result, fatigue failure of the U-shaped spring part 110 is less likely to occur, and cracking and the like can be suppressed.
  • shocks and vibrations can be absorbed by the plurality of radially arranged U-shaped spring portions 110. Therefore, the shocks and vibrations can be dispersed in all directions. Can do. Therefore, according to the first embodiment, it is possible to absorb impacts and vibrations in any of the vertical direction, the rotational direction, and the torsional direction.
  • the structure is simple and the manufacturing cost is very low.
  • the assembly process is compared with the work of fixing and holding a normal leaf spring in a U-shaped shape against an urging force. It is very easy.
  • an air compressor is unnecessary, so that the structure and handling are simple.
  • the upper end portion 110a and the lower end portion 110b of the U-shaped spring portion 110 are brought into contact with the step portions 124 and 134 using the column rings 123 and 133. Since it is set as the structure made to do, durability of the U-shaped spring part 110 can be improved.
  • the center block 140 since the center block 140 is provided, the displacement of the U-shaped spring portion 110 in the direction in which the upper end portion 110a and the lower end portion 110b approach each other can be suppressed to a predetermined amount or less. Thereby, permanent deformation of the U-shaped spring part 110 can be prevented.
  • FIG. 6 is a sectional view schematically showing the structure of the U-shaped suspension according to the second embodiment, and corresponds to the AA section of FIG.
  • components denoted by the same reference numerals as those in FIG. 3 are the same as those in FIG. 3.
  • each U-shaped spring portion 610 is configured by a plurality of (here, two) U-shaped elastic members 611 and 612. .
  • These U-shaped elastic members 611 and 612 are configured such that the inner surface of the U-shaped elastic member 611 and the outer surface of the U-shaped elastic member 612 are overlapped.
  • a friction force can be generated between the U-shaped elastic members 611 and 612 when an impact or vibration is applied to the U-shaped spring portion 610. Then, the impact and vibration of the U-shaped spring portion 610 can be attenuated by this frictional force. Therefore, according to the second embodiment, compared with the first embodiment, the ability to absorb shocks and vibrations can be further enhanced.
  • one U-shaped spring portion 610 is configured from two U-shaped elastic members 611 and 612. However, one U-shaped spring portion 610 is formed from three or more U-shaped elastic members. It is also possible to configure.
  • the column rings 123 and 133 are arranged between the inner fixing plates 122 and 132 and the U-shaped spring portions 110 and 610.
  • the outer fixing plates 121 and 131 and the U-shaped spring are arranged. You may arrange
  • the column rings 123 and 133 are arranged outside the collars 126a and 136, but may be arranged inside the collars 126a and 136.
  • the number of U-shaped spring portions 110 and 610 is eight, but the number is not particularly limited, and may be plural.
  • the U-shaped spring portions 110 and 610 may be substantially U-shaped, for example, may have a larger curvature than the U-shape or a semicircular shape.
  • the center block 140 need not be provided if permanent deformation of the U-shaped spring portion does not matter.

Abstract

A suspension capable of an excellent buffer effect against impact and vibrations in all directions is provided at low cost. This U-shaped suspension (100) has a plurality of U-shaped spring parts (110) that have substantial U shapes when not under a load. These U-shaped spring parts (110) are arrayed in a radial formation, and first end parts are held in a first holding mechanism (120), while second end parts are held in a second holding mechanism (130). In a preferred embodiment of the present invention, the first and second holding mechanisms (120, 130) hold the first and second end parts of the U-shaped spring parts so that the first and second end parts are able to move along straight lines connecting the first and second end parts.

Description

Ｕ字形サスペンションU-shaped suspension
　本発明は、運搬貨物等に与えられる衝撃や振動等を緩和するサスペンションに関する。 [Technical Field] The present invention relates to a suspension for mitigating shocks, vibrations and the like applied to a transported cargo.
　乗り物や貨物運搬車両には、地面やエンジン等から搭乗者や搭載物に伝わる衝撃や振動を緩和するために、サスペンションが使用される。 Suspensions are used in vehicles and freight transport vehicles in order to mitigate shocks and vibrations transmitted from the ground and engines to passengers and mounted objects.
　従来より、乗り物や貨物運搬車用のサスペンションとしては、金属サスペンションやエアーサスペンション等が知られていた。 Conventionally, metal suspensions and air suspensions have been known as suspensions for vehicles and cargo vehicles.
　金属サスペンションとは、金属製のコイルばねを使用したサスペンションである（例えば、特許文献１参照）。 The metal suspension is a suspension using a metal coil spring (for example, see Patent Document 1).
　エアーサスペンションとは、袋状に形成したエラストマの中に気体を封入してなるサスペンションである。 An air suspension is a suspension formed by enclosing gas in a bag-shaped elastomer.
特開２００８－２０２７３８号公報JP 2008-202738 A
　金属サスペンションは、コイルばねが軸方向にのみ変形するように構成されている。このため、金属サスペンションは、ばねの変形に伴う加重の分散が起き難く、従って、水平方向の衝撃や振動に対する緩衝が不十分になり易いという欠点がある。 The metal suspension is configured such that the coil spring is deformed only in the axial direction. For this reason, the metal suspension has a disadvantage that it is difficult for the load to be dispersed due to the deformation of the spring, so that the shock to the shock and vibration in the horizontal direction tends to be insufficient.
　これに対して、エアーサスペンションは、水平方向や捻れ方向の衝撃や振動に対しても、十分な緩衝を行うことが可能である。しかしながら、エアーサスペンションは、エアーコンプレッサを必要とするため、構造が複雑で、高価である。ここで、例えば電気機関車にはエアーブレーキ用のエアーコンプレッサが搭載されているが、これをエアーサスペンションにも使用することは、エアーコンプレッサの能力からして困難である。 On the other hand, the air suspension can perform sufficient buffering against shocks and vibrations in the horizontal direction and twist direction. However, since an air suspension requires an air compressor, the structure is complicated and expensive. Here, for example, an electric locomotive is equipped with an air compressor for an air brake, but it is difficult to use it for an air suspension because of the capability of the air compressor.
　本発明は上記の問題に鑑みてなされたものであり、全方向の衝撃や振動に対して良好な緩衝効果を得ることができるサスペンションを、安価に提供することを課題とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide an inexpensive suspension capable of obtaining a good buffering effect against omnidirectional shock and vibration.
　上記課題を解決するために、本発明に係るＵ字形サスペンションは、放射状に配置され、非荷重状態で略Ｕ字形状を呈する、複数のＵ字形ばね部と、該複数のＵ字形ばね部の第１の端部をそれぞれ保持する第１の保持機構と、該第１の保持機構に対向して配置され、前記複数のＵ字形ばね部の第２の端部をそれぞれ保持する第２の保持機構とを備えることを特徴とする。 In order to solve the above-described problems, a U-shaped suspension according to the present invention includes a plurality of U-shaped spring portions that are radially arranged and exhibit a substantially U shape in an unloaded state, and a plurality of U-shaped spring portions. A first holding mechanism that holds each of the first end portions, and a second holding mechanism that is disposed to face the first holding mechanism and holds the second end portions of the plurality of U-shaped spring portions. It is characterized by providing.
　本発明は、前記第１、第２の保持機構が、前記Ｕ字形ばね部の前記第１、第２の端部を、該第１、第２の端部を結ぶ直線方向への移動が自在となるように保持することが望ましい。 In the present invention, the first and second holding mechanisms can freely move the first and second end portions of the U-shaped spring portion in a linear direction connecting the first and second end portions. It is desirable to hold such that
　本発明は、前記第１、第２の保持機構の少なくとも一方が、前記Ｕ字形ばね部の前記第１、第２の端部の外側面に対向する外側固定板と、前記第１、第２の端部の内側面に対向する内側固定板と、前記第１、第２の端部に設けられた貫通孔を貫通して、前記外側固定板及び前記内側固定板にネジ止めされるネジ止め機構と、前記外側固定板と前記内側固定板との間に配置されて、該外側固定板又は該内側固定板に前記第１、第２の端部を当接させる介在部材とを備えることが望ましい。 According to the present invention, at least one of the first and second holding mechanisms includes an outer fixing plate facing the outer surface of the first and second ends of the U-shaped spring portion, and the first and second An inner fixing plate facing the inner side surface of the end of the first and second through holes provided in the first and second ends, and screwed to the outer fixing plate and the inner fixing plate A mechanism, and an interposition member disposed between the outer fixing plate and the inner fixing plate and abutting the first and second end portions against the outer fixing plate or the inner fixing plate. desirable.
　本発明においては、前記介在部材が環状部材であることが望ましい。 In the present invention, the interposition member is preferably an annular member.
　本発明において、前記第１の保持機構は、前記Ｕ字形ばね部が前記第１、第２の端部が近づく方向に所定量変位したときに、前記第２の保持機構に当接する、センターブロックを備えることが望ましい。 In the present invention, the first holding mechanism is a center block that contacts the second holding mechanism when the U-shaped spring portion is displaced by a predetermined amount in a direction in which the first and second end portions approach each other. It is desirable to provide.
　本発明においては、前記Ｕ字形ばね部が、複数の略Ｕ字形状の弾性材を重ね合わせて構成されていることが望ましい。 In the present invention, it is desirable that the U-shaped spring portion is formed by overlapping a plurality of substantially U-shaped elastic materials.
　本発明によれば、放射状に配置された複数のＵ字形ばね部で荷重を吸収するので、衝撃や振動を全方向に分散させることができ、且つ、構造が簡単で安価である。 According to the present invention, since the load is absorbed by the plurality of U-shaped spring portions arranged radially, the impact and vibration can be dispersed in all directions, and the structure is simple and inexpensive.
　加えて、本発明によれば、Ｕ字形ばね部を使用することにより、サスペンションの全高を短くすることができる。 In addition, according to the present invention, the overall height of the suspension can be shortened by using the U-shaped spring portion.
　本発明において、Ｕ字形ばね部の第１、第２の端部を、該第１、第２の端部を結ぶ直線方向への移動が自在となるように保持することで、Ｕ字形ばね部の疲労破壊を抑制することができる。 In the present invention, the U-shaped spring portion is held by holding the first and second end portions of the U-shaped spring portion so as to be freely movable in a linear direction connecting the first and second end portions. It is possible to suppress fatigue fracture.
　本発明において、介在部材を設けることにより、簡単且つ安価に、Ｕ字形ばね部の疲労破壊を抑制することができる。 In the present invention, by providing the interposition member, fatigue failure of the U-shaped spring portion can be suppressed easily and inexpensively.
　本発明において、センターブロックを設けることにより、Ｕ字形ばね部の変位を所定量以下に抑えて、Ｕ字形ばね部の永久変形を防止することができる。 In the present invention, by providing the center block, the displacement of the U-shaped spring portion can be suppressed to a predetermined amount or less, and permanent deformation of the U-shaped spring portion can be prevented.
　本発明によれば、Ｕ字形ばね部を、複数の略Ｕ字形状の弾性材を重ね合わせて構成することにより、Ｕ字形ばね部に衝撃や振動が加わったときに、Ｕ字形弾性材間で摩擦力を発生させることができ、該摩擦力によって該衝撃や振動を減衰させることができる。 According to the present invention, the U-shaped spring portion is formed by overlapping a plurality of substantially U-shaped elastic members, so that when an impact or vibration is applied to the U-shaped spring portion, A frictional force can be generated, and the impact and vibration can be attenuated by the frictional force.
　加えて、厚みの小さい弾性材を複数枚重ねることによって、所望のばね定数のＵ字形ばね部を構成することとすれば、同じばね定数のＵ字形ばね部を、厚みの大きい１枚の弾性材で構成する場合と比較して、耐久性を向上させることができる。 In addition, if a U-shaped spring portion having a desired spring constant is formed by stacking a plurality of elastic materials having a small thickness, the U-shaped spring portion having the same spring constant is replaced with a single elastic material having a large thickness. Compared with the case where it comprises, durability can be improved.
実施の形態１に係るＵ字形サスペンションの構造を概略的に示す斜視図である。1 is a perspective view schematically showing a structure of a U-shaped suspension according to a first embodiment. 実施の形態１に係るＵ字形サスペンションの構造を概略的に示す平面図である。1 is a plan view schematically showing a structure of a U-shaped suspension according to a first embodiment. 実施の形態１に係るＵ字形サスペンションの構造を概略的に示す図であり、図２のＡ－Ａ断面図である。FIG. 3 is a diagram schematically showing a structure of a U-shaped suspension according to the first embodiment, and is a cross-sectional view taken along the line AA in FIG. 実施の形態１に係るＵ字形ばね部を概略的に示す図であり、（ａ）は側面図、（ｂ）は背面図である。It is a figure which shows schematically the U-shaped spring part which concerns on Embodiment 1, (a) is a side view, (b) is a rear view. 実施の形態１に係るＵ字形サスペンションが変位した状態を示す断面図である。It is sectional drawing which shows the state which the U-shaped suspension which concerns on Embodiment 1 displaced. 実施の形態２に係るＵ字形サスペンションの構造を概略的に示す側面図である。6 is a side view schematically showing a structure of a U-shaped suspension according to Embodiment 2. FIG.
［発明の実施の形態１］
　本発明の実施の形態１に係るＵ字形サスペンションについて、図１乃至図５を用いて説明する。 Embodiment 1 of the Invention
A U-shaped suspension according to Embodiment 1 of the present invention will be described with reference to FIGS.
　図１乃至図３は、この実施の形態１に係るＵ字形サスペンションの構造を概略的に示しており、図１は斜視図、図２は平面図、図３は図２のＡ－Ａ断面図である。また、図４は、この実施の形態１に係るＵ字形ばね部を概略的に示しており、（ａ）は側面図、（ｂ）は背面図である。 1 to 3 schematically show the structure of a U-shaped suspension according to the first embodiment. FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a cross-sectional view taken along line AA in FIG. It is. 4 schematically shows a U-shaped spring portion according to the first embodiment, where (a) is a side view and (b) is a rear view.
　図１乃至図３に示したように、この実施の形態１に係るＵ字形サスペンション１００は、複数（ここでは８個）のＵ字形ばね部１１０を備えている。これらのＵ字形ばね部１１０は、放射状に配置されている。 As shown in FIGS. 1 to 3, the U-shaped suspension 100 according to the first embodiment includes a plurality of (eight in this case) U-shaped spring portions 110. These U-shaped spring parts 110 are arranged radially.
　Ｕ字形ばね部１１０のサイズは特に限定されないが、ここでは、高さＨを１００ｍｍ、奥行きＤを２００ｍｍ、幅Ｗを２０ｍｍ、板圧Ｔを４ｍｍ、曲率半径Ｒを５０ｍｍとした（図４（ａ）、（ｂ）参照）。 The size of the U-shaped spring part 110 is not particularly limited. Here, the height H is 100 mm, the depth D is 200 mm, the width W is 20 mm, the plate pressure T is 4 mm, and the curvature radius R is 50 mm (FIG. 4A ) And (b)).
　Ｕ字形ばね部１１０は、例えば、鋼鉄板（例えばＪＩＳ規格のＳＫ５）を高温でＵ字形状に曲げ加工し、更に、焼き入れ及び焼き鈍しによって応力を零にすることで、作製できる。このようにして作製したＵ字形ばね部１１０は、荷重の無い状態でも、Ｕ字形状を有する。 The U-shaped spring part 110 can be manufactured, for example, by bending a steel plate (for example, JIS standard SK5) into a U shape at a high temperature, and further making the stress zero by quenching and annealing. The U-shaped spring part 110 manufactured in this way has a U-shape even when there is no load.
　Ｕ字形ばね部１１０の一方の端部（ここでは、上側端部１１０ａ）には貫通孔１１１が、他方の端部（ここでは、下側端部１１０ｂ）には貫通孔１１２が、それぞれ形成されている。 A through hole 111 is formed at one end (here, the upper end 110a) of the U-shaped spring portion 110, and a through hole 112 is formed at the other end (here, the lower end 110b). ing.
　保持機構１２０は、本発明の「第１の保持機構」に相当し、各Ｕ字形ばね部１１０の上側端部１１０ａを保持する。このために、保持機構１２０は、外側固定板１２１と、内側固定板１２２と、コラムリング１２３とを備えている。 The holding mechanism 120 corresponds to the “first holding mechanism” of the present invention, and holds the upper end portion 110 a of each U-shaped spring portion 110. For this purpose, the holding mechanism 120 includes an outer fixing plate 121, an inner fixing plate 122, and a column ring 123.
　外側固定板１２１は、例えばアルミニウム合金等で形成されており、Ｕ字形ばね部１１０の一方の端部の外側面（ここでは、上側端部１１０ａの上面）と対向するように配置される。この外側固定板１２１の外縁部下側には、図３に示したように、段差部１２４が設けられている。また、外側固定板１２１は、中心部に配置されたボルト挿通孔１２１ａと、外縁に沿って配置された複数の（ここでは８個）ボルト挿通孔１２１ｂとを、それぞれ備えている。更に、外側固定板１２１の、ボルト挿通孔１２１ｂよりも内側には、複数（ここでは８個）の取付用挿通孔１２１ｃが設けられている。 The outer fixing plate 121 is formed of, for example, an aluminum alloy or the like, and is disposed so as to face the outer surface of one end portion of the U-shaped spring portion 110 (here, the upper surface of the upper end portion 110a). As shown in FIG. 3, a stepped portion 124 is provided below the outer edge portion of the outer fixing plate 121. The outer fixing plate 121 includes a bolt insertion hole 121a disposed at the center and a plurality (eight in this case) of bolt insertion holes 121b disposed along the outer edge. Furthermore, a plurality (eight in this case) of mounting through holes 121c are provided inside the outer fixing plate 121 inside the bolt through holes 121b.
　一方、内側固定板１２２は、例えばステンレス鋼等で形成されており、Ｕ字形ばね部１１０の一方の端部の内側面（ここでは、上側端部１１０ａの下面）と対向するように配置される。この内側固定板１２２は、上記ボルト挿通孔１２１ａ，１２１ｂ及び取付用挿通孔１２１ｃと対向する位置に配置された、ボルト挿通孔１２２ａ，１２２ｂ及び取付用挿通孔１２２ｃを備えている。 On the other hand, the inner fixing plate 122 is made of, for example, stainless steel, and is disposed so as to face the inner surface of one end portion of the U-shaped spring portion 110 (here, the lower surface of the upper end portion 110a). . The inner fixing plate 122 includes bolt insertion holes 122a and 122b and mounting insertion holes 122c arranged at positions facing the bolt insertion holes 121a and 121b and the mounting insertion holes 121c.
　図３に示したように、外側固定板１２１と内側固定板１２２とは、中央部が当接するように配置される。そして、ボルト挿通孔１２１ａ，１２２ａにボルト１２５ａが挿通されて、ナット１２５ｂで締め付け固定される。 As shown in FIG. 3, the outer fixing plate 121 and the inner fixing plate 122 are arranged so that the central portions thereof are in contact with each other. Then, the bolt 125a is inserted into the bolt insertion holes 121a and 122a and is fastened and fixed by the nut 125b.
　外側固定板１２１の段差部１２４は、所定の空間を隔てて、内側固定板１２２の外縁部と対向する。この段差部１２４には、Ｕ字形ばね部１１０の上側端部１１０ａが配置される。更に、外側固定板１２１のボルト挿通孔１２１ｂ、Ｕ字形ばね部１１０の貫通孔１１１及び内側固定板１２２のボルト挿通孔１２２ｂをそれぞれ貫通するように、円筒形状のカラー１２６ａが挿通される。これにより、Ｕ字形ばね部１１０の上側端部１１０ａは、保持機構１２０に、垂直移動自在に保持される。そして、カラー１２６ａの貫通孔に、ボルト１２６ｂが挿通されて、ナット１２６ｃで締め付け固定される。ボルト１２６ｂ及びナット１２６ｃは、本発明の「ネジ止め機構」に相当する。 The step portion 124 of the outer fixing plate 121 is opposed to the outer edge portion of the inner fixing plate 122 with a predetermined space therebetween. In the step portion 124, the upper end portion 110a of the U-shaped spring portion 110 is disposed. Further, a cylindrical collar 126a is inserted through the bolt insertion hole 121b of the outer fixing plate 121, the through hole 111 of the U-shaped spring portion 110, and the bolt insertion hole 122b of the inner fixing plate 122, respectively. Thereby, the upper end portion 110a of the U-shaped spring portion 110 is held by the holding mechanism 120 so as to be vertically movable. Then, the bolt 126b is inserted into the through hole of the collar 126a and is fastened and fixed by the nut 126c. The bolt 126b and the nut 126c correspond to the “screw fixing mechanism” of the present invention.
コラムリング１２３は、本発明の「介在部材」に相当し、例えば鋼鉄で環状に形成されており、Ｕ字形ばね部１１０と内側固定板１２２との間に配置される。このコラムリング１２３に当接した状態で、Ｕ字形ばね部１１０の上側端部１１０ａは、保持機構１２０に保持される。 The column ring 123 corresponds to the “intervening member” of the present invention, and is formed, for example, in an annular shape with steel, and is disposed between the U-shaped spring portion 110 and the inner fixing plate 122. The upper end portion 110 a of the U-shaped spring portion 110 is held by the holding mechanism 120 in a state of being in contact with the column ring 123.
　取付用挿通孔１２１ｃ，１２２ｃは、Ｕ字形サスペンション１００を、例えば輸送コンテナ等に固定するために使用される。 The mounting insertion holes 121c and 122c are used for fixing the U-shaped suspension 100 to, for example, a transport container.
　保持機構１３０は、本発明の「第２の保持機構」に相当し、各Ｕ字形ばね部１３０の下側端部１１０ｂを保持する。このために、保持機構１３０は、外側固定板１３１と、内側固定板１３２と、コラムリング１３３とを備えている。 The holding mechanism 130 corresponds to the “second holding mechanism” of the present invention, and holds the lower end portion 110b of each U-shaped spring portion 130. For this purpose, the holding mechanism 130 includes an outer fixing plate 131, an inner fixing plate 132, and a column ring 133.
　外側固定板１３１は、例えばアルミニウム合金等で形成されており、Ｕ字形ばね部１１０の他方の端部の外側面（ここでは、下側端部１１０ｂの下面）と対向するように配置される。この外側固定板１３１の外縁部上側には、段差部１３４が設けられている。また、外側固定板１３１は、中心部に配置されたボルト挿通孔１３１ａと、外縁に沿って配置された複数の（ここでは８個）ボルト挿通孔１３１ｂとを、それぞれ備えている。更に、外側固定板１３１の、ボルト挿通孔１３１ｂよりも内側には、複数（ここでは８個）の取付用挿通孔１３１ｃが設けられている。 The outer fixing plate 131 is made of, for example, an aluminum alloy or the like, and is disposed so as to face the outer surface of the other end portion of the U-shaped spring portion 110 (here, the lower surface of the lower end portion 110b). A stepped portion 134 is provided above the outer edge portion of the outer fixing plate 131. The outer fixing plate 131 includes a bolt insertion hole 131a disposed at the center and a plurality (eight in this case) of bolt insertion holes 131b disposed along the outer edge. Further, a plurality (eight in this case) of mounting insertion holes 131c are provided on the inner side of the outer fixing plate 131 with respect to the bolt insertion holes 131b.
　一方、内側固定板１３２は、例えばステンレス鋼等で形成されており、Ｕ字形ばね部１１０の他方の端部の内側面（ここでは、下側端部１１０ｂの上面）と対向するように配置される。この内側固定板１３２は、上記ボルト挿通孔１３１ａ，１３１ｂ及び取付用挿通孔１３１ｃと対向する位置に配置された、ボルト挿通孔１３２ａ，１３２ｂ及び取付用挿通孔１３２ｃを備えている。 On the other hand, the inner fixing plate 132 is formed of, for example, stainless steel, and is disposed so as to face the inner surface of the other end of the U-shaped spring portion 110 (here, the upper surface of the lower end 110b). The The inner fixing plate 132 includes bolt insertion holes 132a and 132b and mounting insertion holes 132c arranged at positions facing the bolt insertion holes 131a and 131b and the mounting insertion holes 131c.
　図３に示したように、外側固定板１３１と内側固定板１３２とは、中央部が当接するように配置される。そして、ボルト挿通孔１３１ａ，１３２ａにボルト１３５ａが挿通されて、ナット１３５ｂで締め付け固定される。 As shown in FIG. 3, the outer fixing plate 131 and the inner fixing plate 132 are arranged so that the central portions thereof are in contact with each other. Then, the bolt 135a is inserted into the bolt insertion holes 131a and 132a and is fastened and fixed by the nut 135b.
　外側固定板１３１の段差部１３４は、所定の空間を隔てて、内側固定板１３２の外縁部と対向する。この段差部１３４には、Ｕ字形ばね部１１０の下側端部１１０ｂが配置される。更に、外側固定板１３１のボルト挿通孔１３１ｂ、Ｕ字形ばね部１１０の貫通孔１１２及び内側固定板１３２のボルト挿通孔１３２ｂをそれぞれ貫通するように、円筒形状のカラー１３６ａが挿通される。これにより、Ｕ字形ばね部１１０の下側端部１１０ｂは、保持機構１３０に、垂直移動自在に保持される。そして、カラー１３６ａの貫通孔に、ボルト１３６ｂが挿通されて、ナット１３６ｃで締め付け固定される。ボルト１３６ｂ及びナット１３６ｃは、本発明の「ネジ止め機構」に相当する。 The step portion 134 of the outer fixing plate 131 faces the outer edge portion of the inner fixing plate 132 with a predetermined space therebetween. The lower end portion 110 b of the U-shaped spring portion 110 is disposed at the step portion 134. Further, a cylindrical collar 136a is inserted through the bolt insertion hole 131b of the outer fixing plate 131, the through hole 112 of the U-shaped spring portion 110, and the bolt insertion hole 132b of the inner fixing plate 132, respectively. Accordingly, the lower end portion 110b of the U-shaped spring portion 110 is held by the holding mechanism 130 so as to be vertically movable. Then, a bolt 136b is inserted into the through hole of the collar 136a and is fastened and fixed by a nut 136c. The bolt 136b and the nut 136c correspond to the “screw fixing mechanism” of the present invention.
　コラムリング１３３は、本発明の「介在部材」に相当し、例えば鋼鉄で環状に形成されており、Ｕ字形ばね部１１０と内側固定板１３２との間に配置される。このコラムリング１３３に当接した状態で、Ｕ字形ばね部１１０の下側端部１１０ｂは、保持機構１３０に保持される。 The column ring 133 corresponds to the “intervening member” of the present invention, and is formed, for example, in an annular shape with steel, and is disposed between the U-shaped spring portion 110 and the inner fixing plate 132. The lower end portion 110 b of the U-shaped spring portion 110 is held by the holding mechanism 130 in a state of being in contact with the column ring 133.
　取付用挿通孔１３１ｃ，１３２ｃは、Ｕ字形サスペンション１００を、例えば輸送車両等に固定するために使用される。 The mounting insertion holes 131c and 132c are used for fixing the U-shaped suspension 100 to, for example, a transportation vehicle.
　また、図３に示したように、保持機構１２０の中央下面には、センターブロック１４０が設けられている。このセンターブロック１４０は、アルミニウムブロック１４１と、緩衝部１４２とを備えている。アルミニウムブロック１４１は、上側補助板１５１を介して、保持機構１２０の内側固定板１２２に、ボルト１２５ａを用いて固定されている。緩衝部１４２は、ゴム等の弾性体で形成されており、アルミニウムブロック１４２の下面に固定されている。センターブロック１４０と下側補助板１５２との距離は、例えば２０～３０ｍｍである。このセンターブロック１４０は、過剰な衝撃や振動によってＵ字形ばね部１１０が大きく変位したときに、下側補助板１５２に当接して、それ以上の変位を防止する。これにより、Ｕ字形ばね部１１０の変位が弾性限界点を超えることによる、永久変形を防止することができる。 Further, as shown in FIG. 3, a center block 140 is provided on the lower center surface of the holding mechanism 120. The center block 140 includes an aluminum block 141 and a buffer portion 142. The aluminum block 141 is fixed to the inner fixing plate 122 of the holding mechanism 120 via the upper auxiliary plate 151 using bolts 125a. The buffer portion 142 is formed of an elastic body such as rubber and is fixed to the lower surface of the aluminum block 142. The distance between the center block 140 and the lower auxiliary plate 152 is 20 to 30 mm, for example. The center block 140 abuts against the lower auxiliary plate 152 to prevent further displacement when the U-shaped spring portion 110 is greatly displaced due to excessive impact or vibration. Thereby, the permanent deformation by the displacement of the U-shaped spring part 110 exceeding an elastic limit point can be prevented.
　図５は、衝撃や振動によってＵ字形ばね部１１０が変位した状態を概念的に示す断面図である。 FIG. 5 is a cross-sectional view conceptually showing a state in which the U-shaped spring portion 110 is displaced by impact or vibration.
　上述のように、Ｕ字形ばね部１１０の上側端部１１０ａ及び下側端部１１０ｂは、コラムリング１２３，１３３に接した状態で、保持されている。このため、図５に示したように、Ｕ字形ばね部１１０が変位したとき、端部１１０ａ，１１０ｂは、コラムリング１２３，１３３との接触部を支点として傾斜する。これにより、Ｕ字形ばね部１１０の荷重応力がＵ字形ばね部１１０の湾曲部分全域に分散して、応力集中が緩和される。この結果、Ｕ字形ばね部１１０の疲労破壊が生じ難くなり、クラッキングの発生等を抑制することができる。 As described above, the upper end portion 110a and the lower end portion 110b of the U-shaped spring portion 110 are held in contact with the column rings 123 and 133. For this reason, as shown in FIG. 5, when the U-shaped spring part 110 is displaced, the end parts 110a and 110b are inclined with the contact parts with the column rings 123 and 133 as fulcrums. Thereby, the load stress of the U-shaped spring part 110 is distributed over the entire curved portion of the U-shaped spring part 110, and the stress concentration is relaxed. As a result, fatigue failure of the U-shaped spring part 110 is less likely to occur, and cracking and the like can be suppressed.
　以上のような構造のＵ字形サスペンション１００によれば、放射状に配置された複数のＵ字形ばね部１１０で衝撃や振動を吸収することができ、従って、これら衝撃や振動を全方向に分散させることができる。従って、この実施の形態１によれば、上下方向、回転方向、ねじり方向のいずれについても、衝撃や振動を吸収することが可能である。 According to the U-shaped suspension 100 having the above-described structure, shocks and vibrations can be absorbed by the plurality of radially arranged U-shaped spring portions 110. Therefore, the shocks and vibrations can be dispersed in all directions. Can do. Therefore, according to the first embodiment, it is possible to absorb impacts and vibrations in any of the vertical direction, the rotational direction, and the torsional direction.
　また、この実施の形態１によれば、構造が簡単で、製造コストが非常に安価である。特に、非荷重状態でＵ字形状のばねを使用することにより、通常の板ばねを付勢力に抗してＵ字形状に湾曲させた状態に固定・保持する作業と比較して、組立工程が非常に容易である。更には、エアーサスペンションと異なり、エアコンプレッサが不要であるため、構造や取り扱いが簡単である。 Further, according to the first embodiment, the structure is simple and the manufacturing cost is very low. In particular, by using a U-shaped spring in an unloaded state, the assembly process is compared with the work of fixing and holding a normal leaf spring in a U-shaped shape against an urging force. It is very easy. Furthermore, unlike an air suspension, an air compressor is unnecessary, so that the structure and handling are simple.
　加えて、上述のように、この実施の形態１では、コラムリング１２３，１３３を用いて、Ｕ字形ばね部１１０の上側端部１１０ａ及び下側端部１１０ｂを、段差部１２４，１３４に当接させる構造としたので、Ｕ字形ばね部１１０の耐久性を向上させることができる。 In addition, as described above, in the first embodiment, the upper end portion 110a and the lower end portion 110b of the U-shaped spring portion 110 are brought into contact with the step portions 124 and 134 using the column rings 123 and 133. Since it is set as the structure made to do, durability of the U-shaped spring part 110 can be improved.
　更に、この実施の形態１では、センターブロック１４０を設けたので、Ｕ字形ばね部１１０の、上側端部１１０ａと下側端部１１０ｂとが近づく方向への変位を所定量以下に抑えることができ、これにより、Ｕ字形ばね部１１０の永久変形を防止することができる。 Further, in the first embodiment, since the center block 140 is provided, the displacement of the U-shaped spring portion 110 in the direction in which the upper end portion 110a and the lower end portion 110b approach each other can be suppressed to a predetermined amount or less. Thereby, permanent deformation of the U-shaped spring part 110 can be prevented.
　［発明の実施の形態２］
　以下、本発明の実施の形態２に係るＵ字形サスペンションについて、図６を用いて説明する。 [Embodiment 2 of the Invention]
Hereinafter, a U-shaped suspension according to Embodiment 2 of the present invention will be described with reference to FIG.
　図６は、この実施の形態２に係るＵ字形サスペンションの構造を概略的に示す断面図であり、上記図２のＡ－Ａ断面に対応している。図６において、図３と同じ符号を付した構成要素は、それぞれ図３と同じものを示している。 FIG. 6 is a sectional view schematically showing the structure of the U-shaped suspension according to the second embodiment, and corresponds to the AA section of FIG. In FIG. 6, components denoted by the same reference numerals as those in FIG. 3 are the same as those in FIG. 3.
　図６に示したように、この実施の形態２に係るＵ字形サスペンション６００は、各Ｕ字形ばね部６１０を、それぞれ、複数（ここでは、２個）のＵ字形弾性材６１１，６１２によって構成した。これらのＵ字形弾性材６１１，６１２は、Ｕ字形弾性材６１１の内側面とＵ字形弾性材６１２の外側面とが重ね合わされるように構成されている。 As shown in FIG. 6, in the U-shaped suspension 600 according to the second embodiment, each U-shaped spring portion 610 is configured by a plurality of (here, two) U-shaped elastic members 611 and 612. . These U-shaped elastic members 611 and 612 are configured such that the inner surface of the U-shaped elastic member 611 and the outer surface of the U-shaped elastic member 612 are overlapped.
　このような構成によれば、Ｕ字形ばね部６１０に衝撃や振動が加わったときに、Ｕ字形弾性材６１１，６１２間で、摩擦力を発生させることができる。そして、この摩擦力によって、Ｕ字形ばね部６１０の衝撃や振動を減衰させることができる。従って、この実施の形態２によれば、上記実施の形態１と比較して、衝撃や振動の吸収能力を、更に高めることができる。 According to such a configuration, a friction force can be generated between the U-shaped elastic members 611 and 612 when an impact or vibration is applied to the U-shaped spring portion 610. Then, the impact and vibration of the U-shaped spring portion 610 can be attenuated by this frictional force. Therefore, according to the second embodiment, compared with the first embodiment, the ability to absorb shocks and vibrations can be further enhanced.
　なお、この実施の形態２では、２個のＵ字形弾性材６１１，６１２から１個のＵ字形ばね部６１０を構成したが、３個以上のＵ字形弾性材から１個のＵ字形ばね部６１０を構成することも可能である。 In the second embodiment, one U-shaped spring portion 610 is configured from two U-shaped elastic members 611 and 612. However, one U-shaped spring portion 610 is formed from three or more U-shaped elastic members. It is also possible to configure.
　上述の各実施の形態１、２では、コラムリング１２３，１３３を、内側固定板１２２，１３２とＵ字形ばね部１１０，６１０との間に配置したが、外側固定板１２１，１３１とＵ字形ばね部１１０，６１０との間に配置してもよい。 In each of the first and second embodiments described above, the column rings 123 and 133 are arranged between the inner fixing plates 122 and 132 and the U-shaped spring portions 110 and 610. However, the outer fixing plates 121 and 131 and the U-shaped spring are arranged. You may arrange | position between the parts 110 and 610. FIG.
　また、上述の各実施の形態１、２では、コラムリング１２３，１３３を、カラー１２６ａ，１３６よりも外側に配置したが、カラー１２６ａ，１３６よりも内側に配置してもよい。 In the first and second embodiments described above, the column rings 123 and 133 are arranged outside the collars 126a and 136, but may be arranged inside the collars 126a and 136.
　上述の各実施の形態１、２では、Ｕ字形ばね部１１０，６１０の数を８個としたが、この個数は特に限定されず、複数個であればよい。 In the above-described first and second embodiments, the number of U-shaped spring portions 110 and 610 is eight, but the number is not particularly limited, and may be plural.
　また、Ｕ字形ばね部１１０，６１０の形状は、略Ｕ字形状であればよく、例えば、Ｕ字よりも曲率の大きいものや、半円形のものであってもよい。 Further, the U-shaped spring portions 110 and 610 may be substantially U-shaped, for example, may have a larger curvature than the U-shape or a semicircular shape.
　更に、上述の各実施の形態１、２において、Ｕ字形ばね部の永久変形が問題にならない場合は、センターブロック１４０を設けなくてもよい。 Furthermore, in each of the first and second embodiments described above, the center block 140 need not be provided if permanent deformation of the U-shaped spring portion does not matter.
　１００，６００　Ｕ字形サスペンション
　１１０，６１０　Ｕ字形ばね部
　１１１，１１２，１２１，１２２　貫通孔
　１２０，１３０　保持機構
　１２１，１３１　外側固定板
　１２２，１３２　内側固定板
　１２３，１３３　コラムリング
　１４０　センターブロック
　１５１　上側補助板
　１５２　下側補助板
　６１１，６１２　Ｕ字形弾性材 100,600 U-shaped suspension 110,610 U-shaped spring part 111,112,121,122 Through hole 120,130 Holding mechanism 121,131 Outer fixing plate 122,132 Inner fixing plate 123,133 Column ring 140 Center block 151 Upper auxiliary Plate 152 Lower auxiliary plate 611,612 U-shaped elastic material

Claims (6)

  1. 　放射状に配置され、非荷重状態で略Ｕ字形状を呈する、複数のＵ字形ばね部と、
    　該複数のＵ字形ばね部の第１の端部をそれぞれ保持する第１の保持機構と、
    　該第１の保持機構に対向して配置され、前記複数のＵ字形ばね部の第２の端部をそれぞれ保持する第２の保持機構と、
    　を備えることを特徴とするＵ字形サスペンション。     A plurality of U-shaped spring portions arranged radially and exhibiting a substantially U-shape in an unloaded state;
    A first holding mechanism for holding the first ends of the plurality of U-shaped spring parts,
    A second holding mechanism that is disposed opposite to the first holding mechanism and holds the second ends of the plurality of U-shaped spring parts,
    A U-shaped suspension characterized by comprising:
  2. 　前記第１、第２の保持機構は、前記Ｕ字形ばね部の前記第１、第２の端部を、該第１、第２の端部を結ぶ直線方向への移動が自在となるように保持することを特徴とする請求項１に記載のＵ字形サスペンション。 The first and second holding mechanisms can freely move the first and second ends of the U-shaped spring portion in a linear direction connecting the first and second ends. The U-shaped suspension according to claim 1, wherein the suspension is held.
  3. 　前記第１、第２の保持機構の少なくとも一方は、
    　前記Ｕ字形ばね部の前記第１、第２の端部の外側面に対向する外側固定板と、
    　前記第１、第２の端部の内側面に対向する内側固定板と、
    　前記第１、第２の端部に設けられた貫通孔を貫通して、外側固定板及び前記内側固定板にネジ止めされるネジ止め機構と、
    　前記外側固定板と前記内側固定板との間に配置されて、該外側固定板又は該内側固定板に前記第１、第２の端部を当接させる介在部材と、
    　を備えることを特徴とする請求項２に記載のＵ字形サスペンション。     At least one of the first and second holding mechanisms is
    An outer fixing plate facing the outer surface of the first and second ends of the U-shaped spring part;
    An inner fixing plate facing the inner surface of the first and second ends;
    A screwing mechanism that penetrates through holes provided in the first and second ends and is screwed to the outer fixing plate and the inner fixing plate;
    An interposition member disposed between the outer fixing plate and the inner fixing plate and abutting the first and second end portions on the outer fixing plate or the inner fixing plate;
    The U-shaped suspension according to claim 2, comprising:
  4. 　前記介在部材は、環状部材であることを特徴とする請求項３に記載のＵ字形サスペンション。 The U-shaped suspension according to claim 3, wherein the interposition member is an annular member.
  5. 　前記第１の保持機構は、前記Ｕ字形ばね部が前記第１、第２の端部が近づく方向に所定量変位したときに、前記第２の保持機構に当接する、センターブロックを備えることを特徴とする請求項１乃至４のいずれかに記載のＵ字形サスペンション。 The first holding mechanism includes a center block that comes into contact with the second holding mechanism when the U-shaped spring portion is displaced by a predetermined amount in a direction in which the first and second end portions approach each other. The U-shaped suspension according to any one of claims 1 to 4.
  6. 　前記Ｕ字形ばね部は、複数の略Ｕ字形状の弾性材を重ね合わせて構成されていることを特徴とする請求項１乃至５のいずれかに記載のＵ字形サスペンション。 The U-shaped suspension according to any one of claims 1 to 5, wherein the U-shaped spring portion is configured by overlapping a plurality of substantially U-shaped elastic materials.
PCT/JP2014/066529 2013-06-25 2014-06-23 U-shaped suspension WO2014208490A1 (en)

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