JPWO2013171986A1 - Spring device - Google Patents

Spring device Download PDF

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JPWO2013171986A1
JPWO2013171986A1 JP2014515481A JP2014515481A JPWO2013171986A1 JP WO2013171986 A1 JPWO2013171986 A1 JP WO2013171986A1 JP 2014515481 A JP2014515481 A JP 2014515481A JP 2014515481 A JP2014515481 A JP 2014515481A JP WO2013171986 A1 JPWO2013171986 A1 JP WO2013171986A1
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Prior art keywords
base member
support wall
support
opening
coil spring
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JP2014515481A
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Japanese (ja)
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泰崇 植松
泰崇 植松
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Piolax Inc
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Piolax Inc
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Priority to JP2014515481A priority Critical patent/JPWO2013171986A1/en
Publication of JPWO2013171986A1 publication Critical patent/JPWO2013171986A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • 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
    • F16F3/04—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 wound 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

ばね装置１０は、樹脂材により形成される第１ベース部材１２および第２ベース部材１４と、第１ベース部材１２および第２ベース部材１４に立設するよう支持される複数の第１コイルばね１６とを備える。第１ベース部材１２の台座部は、環状に形成される。第１ベース部材１２の支持部は、台座部の表面側に周方向に離間して複数設けられ、第１コイルばね１６を支持する支持壁を有する。第１開口は支持壁に形成される。第１開口内に第１コイルばね１６の座巻部の一部が入る。The spring device 10 includes a first base member 12 and a second base member 14 formed of a resin material, and a plurality of first coil springs 16 that are supported so as to stand on the first base member 12 and the second base member 14. With. The base portion of the first base member 12 is formed in an annular shape. A plurality of support portions of the first base member 12 are provided on the surface side of the pedestal portion so as to be spaced apart from each other in the circumferential direction, and have a support wall that supports the first coil spring 16. The first opening is formed in the support wall. A part of the end winding portion of the first coil spring 16 enters the first opening.

Description

本発明は、複数のコイルばねを備えるばね装置に関する。   The present invention relates to a spring device including a plurality of coil springs.

車両の自動変速機のクラッチ機構には、クラッチを繋ぐ、または切るためのピストンが設けられ、そのピストンの位置を戻すためにばね装置が用いられる（特許文献１および２参照）。特許文献１に記載のばね組立体は、環状の基板と、基板に固定される複数のコイルばねから構成される。このコイルばねはカシメにより基板に固定される。   A clutch mechanism of a vehicle automatic transmission is provided with a piston for engaging or disengaging the clutch, and a spring device is used to return the position of the piston (see Patent Documents 1 and 2). The spring assembly described in Patent Document 1 includes an annular substrate and a plurality of coil springs fixed to the substrate. This coil spring is fixed to the substrate by caulking.

特許文献２に記載のスプリング組立体は、合成樹脂材でリング状に形成されたスプリングリテーナと、スプリングリテーナの周面に周方向に沿って配設された複数のコイルばねから構成される。このスプリングリテーナは、円筒状の取付部を有し、取付部の側面にコイルばねの端部を嵌合することでコイルばねを固定する。   The spring assembly described in Patent Document 2 includes a spring retainer formed in a ring shape with a synthetic resin material, and a plurality of coil springs disposed along the circumferential direction on the peripheral surface of the spring retainer. This spring retainer has a cylindrical mounting portion, and fixes the coil spring by fitting the end of the coil spring to the side surface of the mounting portion.

特開２００５−２４００３号公報JP 2005-24003 A 特開平６−６６３３６号公報Japanese Patent Laid-Open No. 6-66336

ところでクラッチ機構のピストンは回転しながらばね装置を押圧する場合があり、ばね装置に捻り方向の力が加わってもコイルばねが外れないように取り付けられることが望まれる。特許文献１に記載の技術では、カシメによりコイルばねを確実に固定しているものの、ばね組立体の基板を金属で成形しており、材料の歩留まりが低く製造コストがかかる。特許文献２に記載の技術では、コイルばねの内周に円筒状の取付部を圧入しているだけであり、コイルばねがねじれた場合等にコイルばねが外れる可能性がある。   By the way, there is a case where the piston of the clutch mechanism presses the spring device while rotating, and it is desired that the coil spring is attached so that the coil spring does not come off even when a force in the twisting direction is applied to the spring device. In the technique described in Patent Document 1, although the coil spring is securely fixed by caulking, the substrate of the spring assembly is formed of metal, and the material yield is low and the manufacturing cost is high. In the technique described in Patent Document 2, only a cylindrical mounting portion is press-fitted into the inner periphery of the coil spring, and the coil spring may come off when the coil spring is twisted.

本発明はこのような課題に鑑みてなされたものであり、その目的は、ベース部材のコストを抑え、コイルばねをベース部材にいっそう確実に取り付けるばね装置を提供することにある。   The present invention has been made in view of such problems, and an object of the present invention is to provide a spring device that suppresses the cost of the base member and more reliably attaches the coil spring to the base member.

上記課題を解決するために、本発明のある態様のばね装置は、樹脂材により形成されたベース部材と、ベース部材に立設するよう支持される複数のコイルばねと、を備える。ベース部材は、環状に形成された台座部と、台座部の表面側に周方向に離間して複数設けられ、コイルばねを支持する支持壁を有する支持部と、支持壁に形成された第１開口と、を備える。このばね装置において第１開口内にコイルばねの座巻部の一部が入る。   In order to solve the above-described problem, a spring device according to an aspect of the present invention includes a base member formed of a resin material and a plurality of coil springs supported so as to stand on the base member. The base member has an annular pedestal portion, a plurality of circumferentially spaced pedestal portions on the surface side of the pedestal portion, a support portion having a support wall for supporting the coil spring, and a first formed on the support wall. And an opening. In this spring device, a part of the end winding portion of the coil spring enters the first opening.

この態様によると、支持壁に形成された第１開口内にコイルばねの座巻部の一部が入ることで、コイルばねが外れることを抑えることができる。   According to this aspect, it is possible to prevent the coil spring from coming off due to the part of the end winding portion of the coil spring entering the first opening formed in the support wall.

本発明によれば、ベース部材とコイルばねを有するばね装置において、ベース部材のコストを抑え、コイルばねをベース部材にいっそう確実に取り付けることができる。   According to the present invention, in a spring device having a base member and a coil spring, the cost of the base member can be reduced, and the coil spring can be more securely attached to the base member.

ばね装置の斜視図である。It is a perspective view of a spring device. ばね装置の一部を切り欠いて示す斜視図である。It is a perspective view which notches and shows a part of spring apparatus. 図３（ａ）は、第１ベース部材を表側から見た斜視図であり、図３（ｂ）は、第１ベース部材を裏側から見た斜視図である。FIG. 3A is a perspective view of the first base member as viewed from the front side, and FIG. 3B is a perspective view of the first base member as viewed from the back side. 第１ベース部材の表面図である。It is a surface view of the 1st base member. 第１ベース部材によるコイルばねの支持を説明するための図である。It is a figure for demonstrating support of the coil spring by a 1st base member. 第１ベース部材の一部を切り欠いて示す斜視図である。It is a perspective view which cuts and shows a part of 1st base member. 図７（ａ）および（ｂ）は、支持部の変形例について説明する図であり、第１ベース部材の上面図である。FIGS. 7A and 7B are diagrams illustrating a modification of the support portion, and are top views of the first base member.

図１は、ばね装置１０の斜視図である。また、図２は、ばね装置１０の一部を切り欠いて示す斜視図である。ここで各図面に示される同一または同等の構成要素、部材には、同一の符号を付するものとし、適宜重複した説明は省略する。   FIG. 1 is a perspective view of the spring device 10. FIG. 2 is a perspective view showing a part of the spring device 10 by cutting away. Here, the same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated description thereof is omitted as appropriate.

ばね装置１０は、車両の自動変速機のクラッチ機構に設けられ、油圧等により移動させたクラッチピストンの位置を戻す弾性部材として用いられる。ばね装置１０は、第１ベース部材１２と、第２ベース部材１４と、第１コイルばね１６と、第２コイルばね１８とを同軸上に備える。第１ベース部材１２と第２ベース部材１４の形状は同じであり、複数の第１コイルばね１６の各形状も同じであり、複数の第２コイルばね１８の各形状も同じである。   The spring device 10 is provided in a clutch mechanism of an automatic transmission of a vehicle and is used as an elastic member that returns the position of a clutch piston moved by hydraulic pressure or the like. The spring device 10 includes a first base member 12, a second base member 14, a first coil spring 16, and a second coil spring 18 on the same axis. The shapes of the first base member 12 and the second base member 14 are the same, the shapes of the plurality of first coil springs 16 are the same, and the shapes of the plurality of second coil springs 18 are also the same.

第１コイルばね１６の両端に位置する座巻部は、第１ベース部材１２および第２ベース部材１４にそれぞれ支持される。複数の第１コイルばね１６は、第１ベース部材１２および第２ベース部材１４に支持された状態で、周方向に等間隔で離間して配置される。図２に示すように第２コイルばね１８は、第１コイルばね１６の内側にそれぞれ配設される。第２コイルばね１８を第１コイルばね１６の内側に収容して２重にすることで、ばね装置１０の弾性力を向上できる。   The end winding portions located at both ends of the first coil spring 16 are supported by the first base member 12 and the second base member 14, respectively. The plurality of first coil springs 16 are arranged at equal intervals in the circumferential direction while being supported by the first base member 12 and the second base member 14. As shown in FIG. 2, the second coil spring 18 is disposed inside the first coil spring 16. By accommodating the second coil spring 18 inside the first coil spring 16 and making it double, the elastic force of the spring device 10 can be improved.

第１ベース部材１２および第２ベース部材１４は、合成樹脂材により環状に形成される。合成樹脂材で成形することで、金属成形と比べて製造コストを抑えることができる。第１ベース部材１２は、周方向に等間隔で離間して配置される２０個の支持部２４を有し、第２ベース部材１４も周方向に等間隔で配置される２０個の支持部４４を有する。隣合う支持部２４により第１コイルばね１６を立設するように支持する。第１ベース部材１２について詳細に説明し、第２ベース部材１４は、第１ベース部材１２と同じ形状であるため説明を省略する。   The first base member 12 and the second base member 14 are formed in an annular shape from a synthetic resin material. By molding with a synthetic resin material, manufacturing costs can be reduced compared to metal molding. The first base member 12 has 20 support portions 24 that are spaced apart at equal intervals in the circumferential direction, and the 20 base portions 44 that are also spaced at equal intervals in the circumferential direction. Have The first coil spring 16 is supported upright by the adjacent support portion 24. The first base member 12 will be described in detail, and the second base member 14 has the same shape as the first base member 12, and thus the description thereof is omitted.

図３（ａ）は、第１ベース部材１２を表側から見た斜視図であり、図３（ｂ）は、第１ベース部材１２を裏側から見た斜視図である。また、図４は、第１ベース部材１２の表面図である。なお、表面および裏面は、相対的な関係を説明するための記載で、ばね装置１０の使用態様はこれに限られない。   FIG. 3A is a perspective view of the first base member 12 viewed from the front side, and FIG. 3B is a perspective view of the first base member 12 viewed from the back side. FIG. 4 is a surface view of the first base member 12. The front surface and the back surface are descriptions for explaining the relative relationship, and the usage mode of the spring device 10 is not limited to this.

図３（ａ）に示すように、第１ベース部材１２は、環状に形成された台座部２２と、台座部２２の表側に設けられた支持部２４と、台座部２２の表面に設けられた突部３０とを有する。第１ベース部材１２は対称形であり、複数の支持部２４および複数の突部３０は、それぞれ同じ形状である。   As shown in FIG. 3A, the first base member 12 is provided on the surface of the pedestal portion 22, the pedestal portion 22 formed in an annular shape, the support portion 24 provided on the front side of the pedestal portion 22, and the pedestal portion 22. And a protrusion 30. The first base member 12 has a symmetrical shape, and the plurality of support portions 24 and the plurality of protrusions 30 have the same shape.

隣合う支持部２４の真ん中に突部３０が設けられる。突部３０は、第２コイルばね１８の内側に挿入されてガイドとして機能する。支持部２４は、第１支持壁２６と第２支持壁２８とを有する。隣合う支持部２４において、第１支持壁２６と第２支持壁２８とは周方向に対向する。   A protrusion 30 is provided in the middle of the adjacent support portion 24. The protrusion 30 is inserted inside the second coil spring 18 and functions as a guide. The support portion 24 includes a first support wall 26 and a second support wall 28. In the adjacent support portions 24, the first support wall 26 and the second support wall 28 face each other in the circumferential direction.

図３（ｂ）に示すように、台座部２２の裏面に連通孔３２の第２開口３８が形成される。連通孔３２は、第１開口３４と第２開口３８とを連通し、台座部２２の表裏を貫通する。第２開口３８は、支持部２４の裏側の位置に形成される。台座部２２の裏面は、クラッチピストンから押圧される。   As shown in FIG. 3B, the second opening 38 of the communication hole 32 is formed on the back surface of the pedestal portion 22. The communication hole 32 communicates the first opening 34 and the second opening 38 and penetrates the front and back of the pedestal portion 22. The second opening 38 is formed at a position on the back side of the support portion 24. The back surface of the pedestal 22 is pressed from the clutch piston.

図４に示すように、第１支持壁２６および第２支持壁２８は、第１コイルばね１６の外周の一部を囲うように湾曲した円弧面に形成される。第１支持壁２６および第２支持壁２８により第１コイルばね１６がねじれることを抑え、第１コイルばね１６が外れる可能性を低減できる。第１支持壁２６および第２支持壁２８を周方向に対向して配置したことで、一対の支持壁を径方向に対向させる場合と比べて、第１ベース部材１２の径方向幅を小さくでき、隣合う第１コイルばね１６の間隔を確保できる。   As shown in FIG. 4, the first support wall 26 and the second support wall 28 are formed in a curved arc surface so as to surround a part of the outer periphery of the first coil spring 16. It is possible to suppress the first coil spring 16 from being twisted by the first support wall 26 and the second support wall 28, and to reduce the possibility that the first coil spring 16 is detached. By arranging the first support wall 26 and the second support wall 28 to face each other in the circumferential direction, the radial width of the first base member 12 can be reduced as compared with the case where the pair of support walls are opposed to each other in the radial direction. The interval between the adjacent first coil springs 16 can be secured.

対向する第１支持壁２６および第２支持壁２８は、第１ベース部材１２の内径側において離間されて設けられる。すなわち、対向する第１支持壁２６の内端２６ａと第２支持壁２８の内端２８ａは離間する。支持部２４の内径側を切り欠くように形成したことで、複数の第１コイルばね１６の内接円と第１ベース部材１２の内周を同じ大きさにでき、ばね装置１０の内側の空間を大きくできる。つまり、支持部が連結して、内周が円筒形状である支持部と比べて、支持部２４の内径側を切り欠いた分だけ、ばね装置１０の内径を大きくできる。   The opposed first support wall 26 and second support wall 28 are provided on the inner diameter side of the first base member 12 so as to be separated from each other. That is, the inner end 26a of the first support wall 26 and the inner end 28a of the second support wall 28 that face each other are separated from each other. By forming the inner diameter side of the support portion 24 so as to be cut out, the inscribed circle of the plurality of first coil springs 16 and the inner periphery of the first base member 12 can be made the same size, and the space inside the spring device 10 Can be increased. That is, the inner diameter of the spring device 10 can be increased by the amount corresponding to the notch on the inner diameter side of the support portion 24 compared to the support portion that is connected to the support portion and has an inner circumference that is cylindrical.

対向する第１支持壁２６および第２支持壁２８は、第１ベース部材１２の外径側において離間されて設けられる。すなわち、対向する第１支持壁２６の外端２６ｂと第２支持壁２８の外端２８ｂは離間する。支持部２４の外径側を切り欠くように形成したことで、複数の第１コイルばね１６の外接円と第１ベース部材１２の外周を同じ大きさにでき、支持部２４が連結している場合と比べて、ばね装置１０の外径を小さくでき、小型化できる。   The opposing first support wall 26 and second support wall 28 are provided on the outer diameter side of the first base member 12 so as to be separated from each other. That is, the outer end 26b of the first support wall 26 and the outer end 28b of the second support wall 28 that face each other are separated from each other. By forming the outer diameter side of the support portion 24 so as to be cut out, the circumscribed circle of the plurality of first coil springs 16 and the outer periphery of the first base member 12 can be made the same size, and the support portion 24 is connected. Compared to the case, the outer diameter of the spring device 10 can be reduced and the size can be reduced.

図５は、第１ベース部材１２によるコイルばねの支持を説明するための図である。また、図６は、第１ベース部材１２の一部を切り欠いて示す斜視図である。図６は、図４の第１ベース部材１２の線分Ａ−Ａの断面である。   FIG. 5 is a view for explaining the support of the coil spring by the first base member 12. FIG. 6 is a perspective view of the first base member 12 with a part thereof cut away. 6 is a cross-sectional view taken along line AA of the first base member 12 of FIG.

連通孔３２は、台座部２２の表面側に形成された第１開口３４と、台座部２２の裏面側に形成された第２開口３８と、を連通する。第１開口３４は、第１支持壁２６および第２支持壁２８の根元にそれぞれ形成される。図６に示すように第２開口３８は、台座部２２の裏面に形成され、第２開口３８の縁３８ａは、台座部２２の裏面に位置する。   The communication hole 32 communicates the first opening 34 formed on the front surface side of the pedestal portion 22 and the second opening 38 formed on the back surface side of the pedestal portion 22. The first openings 34 are formed at the bases of the first support wall 26 and the second support wall 28, respectively. As shown in FIG. 6, the second opening 38 is formed on the back surface of the pedestal portion 22, and the edge 38 a of the second opening 38 is located on the back surface of the pedestal portion 22.

本実施例における第１開口３４の幅は、第１コイルばね１６の線径（素線断面の直径）より少し小さく形成され、ばね端が連通孔３２の奥に落ちないように設定される。第１開口３４の縁により第１コイルばね１６の座巻部１６ａを挟持する。具体的には、第１開口３４の上縁である係止部３６と、第１開口３４の下縁近傍の台座部２２の表面２２ａにより挟持される。図５に示すように、座巻部１６ａの外径は向かい合う係止部３６の対向間隔より大きく、座巻部１６ａの一部を第１開口３４に入り込ますことで、第１開口３４が抜け止めとなり、座巻部１６ａを強固に支持できる。また、座巻部１６ａが第１開口３４に入り込んだときの打音や振動により作業者に取付完了を示す操作感が伝達される。なお、変形例として、第１開口３４の幅は、第１コイルばね１６の線径より大きく、第１コイルばね１６の座巻部１６ａが連通孔３２内に一部が入り込む態様であってもよい。ここで、座巻部１６ａの一部が第１開口３４内に入るとは、座巻部１６ａ全周において所定の円弧部分が第１開口３４内に入ることをいい、さらに、座巻部１６ａの所定の円弧部分において、その素線断面の全てまたは一部が第１開口３４内に入ることをいう。所定の円弧部分の素線断面の一部が第１開口３４内に入るとは、第１開口３４の下端を構成する台座部２２の角部と係止部３６との間隔、すなわち第１開口３４の幅が座巻部１６ａの線径より小さく、台座部２２の表面と係止部３６の軸方向の間隔が座巻部１６ａの線径の半分より大きいことをいう。所定の円弧部分の素線断面の全てが入るとは、第１開口３４の幅が座巻部１６ａの線径より大きいことをいう。   The width of the first opening 34 in the present embodiment is formed to be slightly smaller than the wire diameter of the first coil spring 16 (diameter of the wire cross section) and is set so that the spring end does not fall into the communication hole 32. The end winding portion 16 a of the first coil spring 16 is held by the edge of the first opening 34. Specifically, the holding portion 36 that is the upper edge of the first opening 34 and the surface 22 a of the base portion 22 near the lower edge of the first opening 34 are sandwiched. As shown in FIG. 5, the outer diameter of the end turn part 16 a is larger than the facing interval between the opposing locking parts 36, and a part of the end turn part 16 a enters the first opening 34 so that the first opening 34 is removed. It becomes a stop and can firmly support the end winding part 16a. Further, an operational feeling indicating the completion of attachment is transmitted to the operator by the sound and vibration when the end turn 16a enters the first opening 34. As a modification, the width of the first opening 34 is larger than the wire diameter of the first coil spring 16, and the end winding part 16 a of the first coil spring 16 may partially enter the communication hole 32. Good. Here, that a part of the end turn part 16a enters the first opening 34 means that a predetermined arc portion enters the first opening 34 in the entire circumference of the end turn part 16a, and further, the end turn part 16a. In the predetermined arc portion, the whole or a part of the wire cross section enters the first opening 34. When a part of the wire cross section of the predetermined arc portion enters the first opening 34, the interval between the corner portion of the pedestal portion 22 constituting the lower end of the first opening 34 and the locking portion 36, that is, the first opening. 34 is smaller than the wire diameter of the end winding portion 16a, and the axial distance between the surface of the base portion 22 and the locking portion 36 is larger than half the wire diameter of the end winding portion 16a. The fact that the entire wire cross section of the predetermined arc portion is included means that the width of the first opening 34 is larger than the wire diameter of the end wound portion 16a.

座巻部１６ａが第１支持壁２６の係止部３６と第２支持壁２８の係止部３６に係止され、第１コイルばね１６が第１ベース部材１２から外れることを抑えられる。座巻部１６ａの外径は、第１支持壁２６の係止部３６と第２支持壁２８の係止部３６との対向間隔より大きい。第１コイルばね１６の両端に位置する座巻部１６ａの外径は、それらの間の中央部の外径より大きい。座巻部１６ａの外径だけを大きく形成することで、係止部３６に引っかかりやすくなる。また、隣接する第１コイルばね１６との距離を確保でき、第１コイルばね１６同士が接触する可能性を抑えることができる。   The end turn 16a is locked to the locking portion 36 of the first support wall 26 and the locking portion 36 of the second support wall 28, so that the first coil spring 16 is prevented from being detached from the first base member 12. The outer diameter of the end turn 16 a is larger than the facing distance between the locking portion 36 of the first support wall 26 and the locking portion 36 of the second support wall 28. The outer diameter of the end winding parts 16a located at both ends of the first coil spring 16 is larger than the outer diameter of the central part between them. By forming only the outer diameter of the end turn part 16a, it becomes easy to get caught in the engaging part 36. Moreover, the distance with the adjacent 1st coil spring 16 can be ensured, and possibility that the 1st coil springs 16 contact can be suppressed.

図５に示すように、第１支持壁２６および第２支持壁２８は、根元に向かって、すなわち先端から台座部２２に向かって傾斜する。第１支持壁２６および第２支持壁２８の対向間隔は、根元に向かって狭くなる。これにより第１支持壁２６および第２支持壁２８の根元近くに形成される係止部３６を互いに接近するように張り出させて、座巻部１６ａを容易に挿入させつつ、強固に係止させることができる。作業者は、第１支持壁２６および第２支持壁２８の間に第１コイルばね１６の端部を押し込むことで取り付けができるため、カシメ等により取り付ける場合と比べて取付作業が容易である。   As shown in FIG. 5, the first support wall 26 and the second support wall 28 are inclined toward the root, that is, from the tip toward the pedestal portion 22. The interval between the first support wall 26 and the second support wall 28 becomes narrower toward the root. As a result, the locking portion 36 formed near the roots of the first support wall 26 and the second support wall 28 is extended so as to approach each other, and the end winding portion 16a can be easily inserted and firmly locked. Can be made. Since the worker can attach by pushing the end portion of the first coil spring 16 between the first support wall 26 and the second support wall 28, the attachment work is easier than when attaching by caulking or the like.

図５に示すように、第２開口３８を支持部２４の裏側に設け、第１開口３４を第１支持壁２６および第２支持壁２８に設けることで、座巻部１６ａが第１開口３４に挟持されているか確認できる。支持部２４の裏側にある第２開口３８から支持部２４の根元にある第１開口３４を目視して、座巻部１６ａが第１開口３４に位置してなければ、第１コイルばね１６の取り付けが完了してない状態である。これにより第１コイルばね１６の取付不良を目視検査により容易に確認することができる。また、座巻部１６ａの外周を支持する構造としたので、座巻部１６ａの内側から支持する構造と比べて座巻部１６ａの内側に空間があるため、その内側の空間に第２コイルばね１８を配置可能となる。   As shown in FIG. 5, the second opening 38 is provided on the back side of the support portion 24, and the first opening 34 is provided in the first support wall 26 and the second support wall 28, so that the end turn portion 16 a is in the first opening 34. Can be confirmed. When the first opening 34 at the base of the support portion 24 is viewed from the second opening 38 on the back side of the support portion 24 and the end turn portion 16a is not positioned in the first opening 34, the first coil spring 16 Installation is not complete. Thereby, the attachment failure of the 1st coil spring 16 can be easily confirmed by visual inspection. Moreover, since it was set as the structure which supports the outer periphery of the end winding part 16a, since there is a space inside the end winding part 16a compared with the structure supported from the inside of the end winding part 16a, the second coil spring is located in the inner space. 18 can be arranged.

図７（ａ）および（ｂ）は、支持部の変形例について説明する図であり、第１ベース部材１２の上面図である。図７（ａ）に示す支持部１２４および図７（ｂ）に示す支持部２２４は、図４に示す支持部２４と比べて、支持壁の形状が異なる。   FIGS. 7A and 7B are diagrams illustrating a modification of the support portion, and are top views of the first base member 12. The support portion 124 shown in FIG. 7A and the support portion 224 shown in FIG. 7B have different support wall shapes as compared to the support portion 24 shown in FIG.

図７（ａ）に示す第１支持壁１２６および第２支持壁１２８は、周方向に対向して配置され、それぞれ３つの面により形成される。第１支持壁１２６および第２支持壁１２８は、計６つの面により座巻部１６ａの円弧部分を囲んで座巻部１６ａを支持する。   The first support wall 126 and the second support wall 128 shown in FIG. 7A are arranged to face each other in the circumferential direction, and are each formed by three surfaces. The first support wall 126 and the second support wall 128 surround the arc portion of the end turn part 16a by a total of six surfaces and support the end turn part 16a.

図７（ｂ）に示す第１支持壁２２６および第２支持壁２２８は、周方向に対向して配置され、それぞれ２つの面により形成される。第１支持壁２２６および第２支持壁２２８は、計４つの面により座巻部１６ａの円弧部分を囲んで座巻部１６ａを支持する。このように、第１支持壁および第２支持壁が座巻部１６ａの円弧部分を囲う形状に形成することで座巻部１６ａを支持できる。   The first support wall 226 and the second support wall 228 shown in FIG. 7B are arranged to face each other in the circumferential direction, and are each formed by two surfaces. The first support wall 226 and the second support wall 228 support the end winding portion 16a by surrounding the arc portion of the end winding portion 16a with a total of four surfaces. Thus, the end support part 16a can be supported by forming the first support wall and the second support wall in a shape surrounding the arc part of the end turn part 16a.

本発明は上述の実施例に限定されるものではなく、当業者の知識に基づいて各種の設計変更等の変形を実施例に対して加えることも可能であり、そのような変形が加えられた実施例も本発明の範囲に含まれうる。   The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art. Examples may also be included within the scope of the present invention.

実施形態では、ばね装置１０が第１ベース部材１２および第２ベース部材１４を備える態様を示したがこの態様に限られない。たとえば、ばね装置は、第２ベース部材１４を用いず、第１ベース部材１２のみに複数の第１コイルばね１６が支持される態様であってよい。   In the embodiment, the aspect in which the spring device 10 includes the first base member 12 and the second base member 14 is shown, but the present invention is not limited to this aspect. For example, the spring device may be configured such that the plurality of first coil springs 16 are supported only by the first base member 12 without using the second base member 14.

実施形態では、第１コイルばね１６の座巻部１６ａを大径にし、第１支持壁２６および第２支持壁２８を傾斜させた態様を示したが、これに限られない。たとえば、第１コイルばね１６の径を座巻部１６ａも含めて全て同じにし、第１支持壁２６および第２支持壁２８を傾斜させて係止部３６を張り出すようにする。また、第１支持壁２６および第２支持壁２８を台座部２２の表面に対して垂直にし、第１コイルばね１６の座巻部１６ａの径だけを大径にしてもよい。つまり、第１コイルばね１６の座巻部１６ａを大径にする態様、および、第１支持壁２６および第２支持壁２８を傾斜させる態様のいずれか一方を満たせば、座巻部１６ａを係止部３６に引っ掛けるように係止させることができる。   In the embodiment, the end winding part 16a of the first coil spring 16 has a large diameter and the first support wall 26 and the second support wall 28 are inclined. However, the present invention is not limited to this. For example, the diameters of the first coil springs 16 including the end winding portions 16a are all the same, and the first support wall 26 and the second support wall 28 are inclined so that the locking portions 36 are projected. Alternatively, the first support wall 26 and the second support wall 28 may be perpendicular to the surface of the pedestal portion 22, and only the diameter of the end winding portion 16 a of the first coil spring 16 may be increased. That is, if either one of the aspect in which the end winding part 16a of the first coil spring 16 has a large diameter and the aspect in which the first support wall 26 and the second support wall 28 are inclined is satisfied, the end winding part 16a is engaged. It can be locked so as to be hooked on the stopper 36.

１０ ばね装置、 １２ 第１ベース部材、 １４ 第２ベース部材、 １６ 第１コイルばね、 １６ａ 座巻部、 １８ 第２コイルばね、 ２２ 台座部、 ２４ 支持部、 ２６ 第１支持壁、 ２８ 第２支持壁、 ３０ 突部、 ３２ 連通孔、 ３４ 第１開口、 ３６ 係止部、 ３８ 第２開口、 ４４ 支持部。   DESCRIPTION OF SYMBOLS 10 Spring apparatus, 12 1st base member, 14 2nd base member, 16 1st coil spring, 16a End winding part, 18 2nd coil spring, 22 base part, 24 support part, 26 1st support wall, 28 2nd Support wall, 30 protrusion, 32 communication hole, 34 1st opening, 36 latching | locking part, 38 2nd opening, 44 support part.

本発明は、複数のコイルばねを備えるばね装置に関する。   The present invention relates to a spring device including a plurality of coil springs.

Claims (6)

樹脂材により形成されたベース部材と、
前記ベース部材に立設するよう支持される複数のコイルばねと、を備え、
前記ベース部材は、
環状に形成された台座部と、
前記台座部の表面側に周方向に離間して複数設けられ、前記コイルばねを支持する支持壁を有する支持部と、
前記支持壁に形成された第１開口と、を備え、
前記第１開口内に前記コイルばねの座巻部の一部が入ることを特徴とするばね装置。A base member formed of a resin material;
A plurality of coil springs supported to stand on the base member,
The base member is
A ring-shaped pedestal,
A plurality of circumferentially spaced apart support portions on the surface side of the pedestal portion, and a support portion having a support wall for supporting the coil spring;
A first opening formed in the support wall,
A part of the end winding portion of the coil spring enters the first opening. 前記台座部は、前記第１開口と、前記台座部の裏面側に形成された第２開口と、を連通する連通孔を有することを特徴とする請求項１に記載のばね装置。   2. The spring device according to claim 1, wherein the pedestal portion includes a communication hole that communicates the first opening and a second opening formed on a back surface side of the pedestal portion. 前記第２開口は、前記ベース部材の裏面であって前記支持部の裏側に形成されることを特徴とする請求項２に記載のばね装置。   The spring device according to claim 2, wherein the second opening is formed on a back surface of the base member and on a back side of the support portion. 隣り合う前記支持壁は、周方向に対向して配置され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装置。   The spring device according to claim 1, wherein the adjacent support walls are arranged to face each other in the circumferential direction. 対向する一対の前記支持壁は、前記ベース部材の外径側において離間されて設けられることを特徴とする請求項４に記載のばね装置。   The spring device according to claim 4, wherein the pair of opposing support walls are provided to be separated from each other on the outer diameter side of the base member. 対向する一対の前記支持壁は、前記ベース部材の内径側において離間されて設けられることを特徴とする請求項４または５に記載のばね装置。   6. The spring device according to claim 4, wherein the pair of opposing support walls are spaced apart from each other on the inner diameter side of the base member.
JP2014515481A 2012-05-18 2013-04-25 Spring device Pending JPWO2013171986A1 (en)

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JPH05126189A (en) * 1991-10-30 1993-05-21 Tougou Seisakusho:Kk Spring assembly
JP2004306748A (en) * 2003-04-04 2004-11-04 Togo Seisakusho Corp Spring unit for elastic wheels

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JPS6179040U (en) * 1984-10-30 1986-05-27
JP2678164B2 (en) * 1988-01-29 1997-11-17 日本発条株式会社 Spring assembly of automatic transmission for vehicle and manufacturing method thereof

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JPH05126189A (en) * 1991-10-30 1993-05-21 Tougou Seisakusho:Kk Spring assembly
JP2004306748A (en) * 2003-04-04 2004-11-04 Togo Seisakusho Corp Spring unit for elastic wheels

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