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公开(公告)号：US11499600B2
公开(公告)日：2022-11-15
申请号：US17055417
申请日：2019-04-24
发明人： Ryuji Kishihara , Seiji Okamura
摘要： A coil spring of this invention includes a first end coil part with a first bearing surface facing to the first side in the axial direction, a second end coil part with a second bearing surface facing to the second side in the axial direction and a central coil part connecting the first and second end coil parts. A displacement length in the axial direction from the outer end portion until the inner end portion of the first end coil part is a thickness of a spring wire forming the coil spring so that a space between the outer end portion of the first end coil part and an inner end portion of the central coil part is zero, and a displacement length in the axial direction between the outer end portion of the first end coil part and a point away along the circumferential direction from the outer end portion toward the inner end portion of the first end coil part by a half of turn around the axial line is less than a half of the thickness of the spring wire.
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公开(公告)号：US09400026B2
公开(公告)日：2016-07-26
申请号：US14436802
申请日：2013-11-20
发明人： Ryuji Kishihara , Naoya Wada , Keiichiro Teratoko , Akio Kidooka , Yuu Yokoyama , Akira Hori
CPC分类号： F16F1/10 , F01L1/356 , F01L2001/34483 , F16F2234/06 , F16F2238/026
摘要： At least a first movable coil part of a plurality of movable coil parts that is in the innermost place in the radial direction does not come into contact with both the fixed coil part, which is radially adjacent inwardly, and a second movable coil part, which is radially adjacent outwardly, at the same place in the circumferential direction while coming into contact with only one of the fixed coil part and the second movable coil part in a plurality of places that are circumferentially displaced, when the spiral spring is in an elasticity retaining state reached from a free length state by elastic deformation in the diameter-reducing direction.
摘要翻译： 位于径向最内侧的多个可动线圈部的至少第一可动线圈部不与径向相邻的固定线圈部和第二可动线圈部接触， 在螺旋弹簧处于弹性保持状态的同时在多个周向位移中与固定线圈部分和第二可动线圈部分中的仅一个接触的同时在圆周方向的相同位置处径向地相邻 通过直径减小方向的弹性变形从自由长度状态到达状态。
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公开(公告)号：US11181160B2
公开(公告)日：2021-11-23
申请号：US16093496
申请日：2017-02-07
发明人： Ryuji Kishihara , Seiji Okamura
摘要： In the coil spring of the present invention, a helical space defined by a space between coils has a first end region whose space is increased as it extends towards the other side in the axial direction from a first reference point where the space is zero, a reference region whose space is set at a reference value L (L>0), and a second end region whose space becomes narrow as it extends toward the other side in the axial direction and zero at a second reference point. The first end region is configured such that the number of turns of the helical space is greater than 1 and the space between coils in a terminal position is greater than the reference value L. The helical space has a first transitional region between the terminal position of the first end region and the reference region, the first transitional region being configured so that the distance of space between coils is reduced from the terminal position of the first end region along the helical shape of the helical space toward the other side in the axial direction and becomes the reference value L.
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公开(公告)号：US11131356B2
公开(公告)日：2021-09-28
申请号：US16093511
申请日：2017-02-07
发明人： Ryuji Kishihara , Seiji Okamura
摘要： In the coil spring of the present invention, a helical space defined by a space between coils has a first end region whose space is increased as it extends towards the other side in the axial direction from a first reference point where the space is zero, a reference region whose space is set at a reference value L (L>0), and a second end region whose space becomes narrow as it extends toward the other side in the axial direction and zero at a second reference point. The first end region has a first end outer part and a first end inner end. In a case where a pitch angle of the space between coils that causes the displacement of the space between coils per turn of the helical space to be L is a reference pitch angle Pa, the pitch angle in the first end outer part is set at Pa while the pitch angle in the first end inner part is set at Pb (Pb>Pa).
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公开(公告)号：US11719298B2
公开(公告)日：2023-08-08
申请号：US17364196
申请日：2021-06-30
发明人： Ryuji Kishihara , Seiji Okamura
CPC分类号： F16F1/06 , F16F1/047 , F16F1/123 , F16F2238/026
摘要： In the coil spring of the present invention, a helical space defined by a space between coils has a first end region whose space is increased as it extends towards the other side in the axial direction from a first reference point where the space is zero, a reference region whose space is set at a reference value L (L>0), and a second end region whose space becomes narrow as it extends toward the other side in the axial direction and zero at a second reference point. The first end region is configured such that the number of turns of the helical space is greater than 1 and the space between coils in a terminal position is greater than the reference value L. The helical space has a first transitional region between the terminal position of the first end region and the reference region, the first transitional region being configured so that the distance of space between coils is reduced from the terminal position of the first end region along the helical shape of the helical space toward the other side in the axial direction and becomes the reference value L.
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公开(公告)号：US20150292585A1
公开(公告)日：2015-10-15
申请号：US14436802
申请日：2013-11-20
发明人： Ryuji Kishihara , Naoya Wada , Keiichiro Teratoko , Akio Kidooka , Yuu Yokoyama , Akira Hori
IPC分类号： F16F1/10
CPC分类号： F16F1/10 , F01L1/356 , F01L2001/34483 , F16F2234/06 , F16F2238/026
摘要： At least a first movable coil part of the plurality of movable coil parts that is in the innermost place in the radial direction does not come into contact with both the fixed coil part, which is radially adjacent on the inside, and a second movable coil part, which is radially adjacent on the outside, at the same place in the circumferential direction while coming into contact with only one of the fixed coil part and the second movable coil part in a plurality of places that are circumferentially displaced, when the spiral spring is in an elasticity retaining state reached from a free length state by elastic deformation in the diameter-reducing direction.
摘要翻译： 位于径向最内侧的多个可动线圈部的至少第一可动线圈部不与内侧径向相邻的固定线圈部与第二可动线圈部 ，其在圆周方向的相同位置处，在螺旋形弹簧为多个位置时，在与周向位移多个的位置仅与一个固定线圈部和第二可动线圈部接触的状态下， 在通过直径减小方向上的弹性变形而从自由长度状态到达的弹性保持状态。
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公开(公告)号：US09782819B2
公开(公告)日：2017-10-10
申请号：US14436794
申请日：2013-11-20
申请人： SUNCALL CORPORATION
发明人： Ryuji Kishihara , Naoya Wada , Keiichiro Teratoko
CPC分类号： B21F3/08 , B21D11/07 , B21F23/00 , B21F35/02 , F16F1/10 , F16F2226/04 , F16F2238/026 , Y10T29/49611
摘要： A method includes a spiral forming step causing a substantially linear elongated member, conveyed toward one side in a longitudinal direction of the elongated member by a pair of conveying rollers, to be engaged at one side in a second direction with a pressing member movable in the second direction so that a spiral body including the fixed coil part, the first movable coil part and the second movable coil part is formed from the linear elongated member. The spiral forming step is configured to control the position of the pressing member with respect to the second direction, based on a signal from a rotational speed sensor detecting the rotational speed of the conveying roller, a relationship between a position in the longitudinal direction of the elongated member that is engaged with the pressing member and the position in the circumferential direction after the spiral body is formed.
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