WO2011152025A1 - Wave coil spring - Google Patents
Wave coil spring Download PDFInfo
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- WO2011152025A1 WO2011152025A1 PCT/JP2011/003016 JP2011003016W WO2011152025A1 WO 2011152025 A1 WO2011152025 A1 WO 2011152025A1 JP 2011003016 W JP2011003016 W JP 2011003016W WO 2011152025 A1 WO2011152025 A1 WO 2011152025A1
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- WIPO (PCT)
- Prior art keywords
- coil spring
- contact point
- peak
- roll
- wave coil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/06—Wound springs with turns lying in cylindrical surfaces
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/048—Wound springs with undulations, e.g. wavy springs
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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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
Definitions
- the wave coil spring is used, for example, as a spring that urges a piston housed in a clutch of an automobile transmission.
- Patent Document 1 discloses a wave coil spring that suppresses positional deviation between peaks and valleys of adjacent corrugated portions.
- the wave coil spring described in Patent Document 1 is provided with a convex portion at the peak of the adjacent corrugated portion, a concave portion at the valley, a locking mechanism at the convex portion and the concave portion, and fitting the locking mechanism between the convex portion and the concave portion. It becomes the composition.
- This wave coil spring is formed by spirally winding a corrugated plate material having crests and troughs, and guides the spring body to restrict the diameter of the spring body on the inner peripheral side of the spring body.
- a member is provided, and the n-th valley and the (n + 1) -th peak are opposed to each other in the axial direction.
- the inclination angle ⁇ of the tangent line passing through the contact point between the valley part of the nth roll and the peak part of the (n + 1) th roll is defined as 0 degree as the inclination angle of the tangent line passing through the apex of the peak part of the (n + 1) th roll.
- the contact point between the peak and the valley may shift.
- the contact point between the peak and the valley may be simply referred to as “contact point”.
- the contact point deviation will be specifically described below.
- the inclination angle ⁇ of the tangent line 36 passing through the contact point 34 between the n-th turn valley 30 and the (n + 1) -th turn ridge 32 is ⁇ arctan ⁇ degree ⁇ ⁇ ⁇ 0 degree.
- the position of the contact point 34 is set.
- the inclination angle ⁇ of the tangent line passing through the contact point 34 is 0 ° with respect to the inclination angle of the tangent line passing through the apex 26 of the peak portion 32 of the (n + 1) winding as viewed from the outer peripheral side of the wave coil spring 10.
- the contact angle is set so that the inclination angle ⁇ of the tangent line 36 passing through the contact point 34 between the n-th turn valley 30 and the (n + 1) -th turn peak 32 is ⁇ arctan (3 ⁇ / 4) degrees ⁇ ⁇ .
- the position of the point 34 is set.
- the tangent line passing through the contact point between the n-th valley and the (n + 1) -th peak is symmetrical to the wave coil spring 10 shown in FIG.
- the inclination angle ⁇ is 0 degree ⁇ ⁇ arctan ⁇ degree. More preferably, the inclination angle ⁇ of the tangent line passing through the contact point between the n-th valley and the (n + 1) -th peak is arctan ( ⁇ / 4) degrees ⁇ ⁇ ⁇ arctan (3 ⁇ / 4). May be degrees.
- the contact point 63 between the valley portion 66 of the nth winding and the peak portion 67 of the (n + 1) th winding of the wave coil spring 60 has an increased coil diameter. The direction is shifted in advance.
- the second guide member 62 is provided in the wave coil spring, and the contact point between the valley of the nth turn and the peak of the (n + 1) turn
- the position of the contact point is set so that the inclination angle ⁇ of the tangent line passing through ⁇ satisfies ⁇ ⁇ 0 degrees. More preferably, the position of the contact point is set so that the inclination angle ⁇ of the tangent line 68 passing through the contact point 63 satisfies ⁇ ⁇ ⁇ arctan ( ⁇ / 4) degrees.
- the wave coil spring is configured so that the waveform pitch is alternately a long pitch and a short pitch, and a peak portion that is set to a long pitch with respect to a valley portion that is set to a long pitch. Make contact with each other. That is, the contact point between the n-th turn valley and the (n + 1) -th turn peak is set to be located on the long pitch slope. Thereby, since the contact point is located on the slope having the longer pitch than the slope having the shorter pitch, the contact point can be further prevented from shifting. It should be noted that the contact point between the valley of the nth roll and the peak of the (n + 1) th roll may be set so as to be located on the same or a gentle slope as the slope of the friction angle.
- the present invention can be used for a wave coil spring formed by spirally winding a corrugated plate material.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Disclosed is a wave coil spring which is formed in such a way that a wave plate that alternately comprises crest sections and trough sections is spirally wound. In this wave coil spring, the trough sections of the nth turn are in contact with the crest sections of the (n + 1) turn in such a way that said trough sections face said crest sections in the shaft center direction. The inclination angle (θ) of the tangent line which passes through the contact point between a trough section in the nth turn and the corresponding crest section in the (n + 1) turn is -arctan μ (deg) ≤ θ < 0 (deg) if the plate is wound to the right, or is 0 (deg) < θ ≤ arctan μ (deg) if the plate is wound to the left.
Description
本発明は、波形の板材を螺旋状に巻回して形成したウェーブコイルばねに関する。
The present invention relates to a wave coil spring formed by spirally winding a corrugated plate material.
ウェーブコイルばねは、たとえば、自動車の変速機のクラッチに収容されているピストンを付勢するばねとして用いられる。特許文献１には、隣接する波形部の山と谷の位置ずれを抑えるウェーブコイルばねが開示されている。特許文献１に記載のウェーブコイルばねは、隣接する波形部の山に凸部、谷に凹部を設け、凸部と凹部に係止機構を設けて凸部と凹部の係止機構を嵌合させた構成となっている。
The wave coil spring is used, for example, as a spring that urges a piston housed in a clutch of an automobile transmission. Patent Document 1 discloses a wave coil spring that suppresses positional deviation between peaks and valleys of adjacent corrugated portions. The wave coil spring described in Patent Document 1 is provided with a convex portion at the peak of the adjacent corrugated portion, a concave portion at the valley, a locking mechanism at the convex portion and the concave portion, and fitting the locking mechanism between the convex portion and the concave portion. It becomes the composition.
ところで、ウェーブコイルばねは、自由状態から圧縮されて短くなった所定の軸方向長さで装置（たとえばオートマチックトランスミッション内部）に組み付けられてセット状態にされ、装置が稼動状態においては、このセット状態から更に所定ストローク圧縮された負荷状態へ、そして負荷状態からセット状態へ、何度も繰り返されて使用される。このとき、押圧を何度も繰り返すと山部の頂点と谷部の頂点との接触点が周方向にずれることがある。
By the way, the wave coil spring is assembled into a device (for example, inside an automatic transmission) with a predetermined axial length that is compressed and shortened from the free state, and is set in a set state. Further, it is used repeatedly over and over again from a load state compressed by a predetermined stroke, and from a load state to a set state. At this time, if the pressing is repeated many times, the contact point between the peak of the peak and the peak of the valley may shift in the circumferential direction.
これは、ウェーブコイルばねを押圧したときにウェーブコイルばねの波形の振幅が小さくなって波長が伸びることで、頂点どうしの接触点がコイル径が拡がる方向にずれる傾向が認められる。そして押圧を元のセット状態に戻すと、ずれた接触点が元に戻ろうとするが、このとき摩擦力の影響で完全に元の頂点位置まで戻りきらず、頂点の手前の斜面に接触してとどまる。このように山部の頂点と谷部の頂点がずれて接触した状態から再び負荷状態になると、山部と谷部の接点が斜面に位置することから周方向の分力によって斜面を下る方向に接触点が更にずれていく。これを繰り返すうちに斜面にある接触点が頂点からさらにずれる可能性が増し、ウェーブコイルばねの荷重特性が変化してしまう問題点があった。
This indicates that when the wave coil spring is pressed, the wave coil spring has a reduced waveform amplitude and the wavelength is extended, so that the contact point between the apexes tends to shift in the direction of increasing the coil diameter. When the pressure is returned to the original set state, the displaced contact point tries to return to the original state, but at this time, it does not completely return to the original vertex position due to the frictional force, but remains in contact with the slope in front of the vertex. . In this way, when the peak of the peak and the peak of the valley are in contact with each other after shifting, the contact point between the peak and the valley is located on the slope. The contact point is further shifted. As this is repeated, there is a possibility that the contact point on the slope is further shifted from the apex, and the load characteristics of the wave coil spring change.
上記のずれを防止するものとして特許文献１があるが、特許文献１に記載の技術では、ウェーブコイルばねに凸部および凹部を設ける必要があるが、硬いばね材への加工は難しく、生産性が低下してしまう。
Although there exists patent document 1 as what prevents said shift | offset | difference, in the technique of patent document 1, it is necessary to provide a convex part and a recessed part in a wave coil spring, but the process to a hard spring material is difficult, and productivity is high. Will fall.
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、山部と谷部との接触点のずれが過度に大きくなることを抑え、製造が容易であるウェーブコイルばね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 wave coil spring that is easy to manufacture by suppressing an excessive shift of the contact point between the peak and the valley. There is to do.
上記課題を解決するために、本発明のある態様のウェーブコイルばねは、山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されており、ｎ巻目の谷部と（ｎ＋１）巻目の山部とは、軸心方向に対向して接触する。そしてｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の山部の頂点を通る接線の傾斜角を０度として、板材が右巻に巻回されている場合、－ａｒｃｔａｎμ度≦θ＜０度であり、板材が左巻に巻回されている場合、０度＜θ≦ａｒｃｔａｎμ度である。なおｎは自然数、μは板材の静摩擦係数である。
In order to solve the above-mentioned problems, a wave coil spring according to an aspect of the present invention is formed by spirally winding a corrugated plate having alternating peaks and troughs, and the n-th trough And the peak of the (n + 1) th winding are in contact with each other in the axial direction. And the inclination angle θ of the tangent line passing through the contact point between the valley part of the nth roll and the peak part of the (n + 1) th roll is defined as 0 degree as the inclination angle of the tangent line passing through the apex of the peak part of the (n + 1) th roll. When the plate is wound in a right turn, −arctan μ degree ≦ θ <0 degree, and when the plate is wound in a left turn, 0 degree <θ ≦ arctan μ degree. Note that n is a natural number and μ is a coefficient of static friction of the plate material.
この態様によると、ウェーブコイルばねの接触点の位置がコイル径が拡がる方向にずれることを抑えることができる。また、接触点の位置をずらすことによって製造することができるため、接触点に係止部材等を設ける場合と比べて加工が容易である。
According to this aspect, it is possible to suppress the position of the contact point of the wave coil spring from shifting in the direction in which the coil diameter increases. Moreover, since it can manufacture by shifting the position of a contact point, a process is easy compared with the case where a locking member etc. are provided in a contact point.
本発明の別の態様も、ウェーブコイルばねである。このウェーブコイルばねは、山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されており、ばね本体の内周側に、ばね本体が縮径することを規制するガイド部材が設けられ、ｎ巻目の谷部と（ｎ＋１）巻目の山部とは、軸心方向に対向して接触する。そしてｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の山部の頂点を通る接線の傾斜角を０度として、板材が右巻に巻回されている場合、θ＜０度であり、板材が左巻に巻回されている場合、０度＜θである。
Another aspect of the present invention is also a wave coil spring. This wave coil spring is formed by spirally winding a corrugated plate material having crests and troughs, and guides the spring body to restrict the diameter of the spring body on the inner peripheral side of the spring body. A member is provided, and the n-th valley and the (n + 1) -th peak are opposed to each other in the axial direction. And the inclination angle θ of the tangent line passing through the contact point between the valley part of the nth roll and the peak part of the (n + 1) th roll is defined as 0 degree as the inclination angle of the tangent line passing through the apex of the peak part of the (n + 1) th roll. When the plate is wound clockwise, θ <0 degrees, and when the plate is wound counterclockwise, 0 ° <θ.
この態様によると、ウェーブコイルばねのコイル径の拡径および縮径を抑えることができる。
According to this aspect, the expansion and contraction of the coil diameter of the wave coil spring can be suppressed.
本発明のさらに別の態様もまた、ウェーブコイルばねである。このウェーブコイルばねは、山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されており、ばね本体の外周側に、ばね本体が拡径することを規制するガイド部材が設けられ、ｎ巻目の谷部と（ｎ＋１）巻目の山部とは、軸心方向に対向して接触する。そして、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の山部の頂点を通る接線の傾斜角を０度として、板材が右巻に巻回されている場合、０度＜θであり、板材が左巻に巻回されている場合、θ＜０度である。
Still another embodiment of the present invention is also a wave coil spring. This wave coil spring is formed by spirally winding a corrugated plate material having crests and troughs, and a guide member that regulates the diameter expansion of the spring body on the outer peripheral side of the spring body The n-th valley and the (n + 1) -th peak are opposed to each other in the axial direction. And the inclination angle θ of the tangent line passing through the contact point between the valley of the nth roll and the peak of the (n + 1) th roll is defined as 0 degree with the inclination angle of the tangent passing through the apex of the (n + 1) turn of the peak. When the plate is wound clockwise, 0 degree <θ, and when the plate is wound left, θ <0 degree.
この態様によると、ウェーブコイルばねのコイル径の拡径および縮径を抑えることができる。
According to this aspect, the expansion and contraction of the coil diameter of the wave coil spring can be suppressed.
本発明によれば、山部と谷部との接触点のずれが過度に大きくなることを抑えることができる。
According to the present invention, it is possible to suppress the displacement of the contact point between the peak portion and the valley portion from becoming excessively large.
図１は、第１実施形態に係るウェーブコイルばね１０を示す斜視図である。以下、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 showing a wave coil spring 10 according to the first embodiment. Hereinafter, the same or equivalent components and members shown in the respective drawings are denoted by the same reference numerals, and repeated descriptions thereof are omitted as appropriate.
ウェーブコイルばね１０は、山部１４と谷部１６とを交互に有する波形の板材を螺旋状に右巻に巻回して形成され、波形はサインカーブとなるように形成される。端部１８を有する上下の１巻をともに座巻部１２という。なお、ウェーブコイルばね１０の最上段を１巻目とし、上から順にｎ巻目の段に対向する下段を（ｎ＋１）巻目の段とする（ｎは自然数である）。
The wave coil spring 10 is formed by spirally winding a corrugated plate material having peaks 14 and valleys 16 in a right-handed manner, and the waveform is formed to be a sine curve. Both the upper and lower windings having the end 18 are referred to as end winding parts 12. The uppermost stage of the wave coil spring 10 is the first volume, and the lower stage facing the nth stage from the top is the (n + 1) th stage (n is a natural number).
図２は、一般的なウェーブコイルばね１１０を示す正面図である。以下の図２から図６では、円筒形状のウェーブコイルばねを平面に展開した状態で示す。ウェーブコイルばね１１０は、右巻に巻回して形成されている。図２に示すウェーブコイルばね１１０は、山部の頂点１１４と谷部の頂点１１２が接触しており、頂点の位置が軸方向に一致している。ウェーブコイルばね１１０は、押圧部材１１６によってセット荷重が常に加えられており、この状態からさらに押圧力が加えられて用いられる。接触点のすべてが山部の頂点と谷部の頂点とで接触していればずれは生じにくいが、実際には何度も押圧が繰り返されると、山部と谷部の接触点が頂点からずれることがある。なお以下、山部と谷部の接触点を単に「接触点」と呼ぶこともある。接触点のずれについて具体的に以下に説明する。
FIG. 2 is a front view showing a general wave coil spring 110. In the following FIG. 2 to FIG. 6, a cylindrical wave coil spring is shown in a state of being developed on a plane. The wave coil spring 110 is formed by winding it to the right. In the wave coil spring 110 shown in FIG. 2, the peak 114 of the peak and the peak 112 of the valley are in contact with each other, and the position of the peak coincides with the axial direction. A set load is always applied to the wave coil spring 110 by the pressing member 116, and a pressing force is further applied from this state. If all of the contact points are in contact at the peak of the peak and the peak of the valley, the shift is unlikely to occur, but in reality, if the pressing is repeated many times, the contact point between the peak and the valley It may shift. Hereinafter, the contact point between the peak and the valley may be simply referred to as “contact point”. The contact point deviation will be specifically described below.
図３は、図２に示すウェーブコイルばね１１０において接触点がずれる態様を示す正面図である。このウェーブコイルばね１１０は、何度も押圧された結果、コイル径が拡がる方向に接触点１０５がずれている。接触点１０５のずれとは、山部の頂点１０７または谷部の頂点１０４からのずれをいい、セット状態から押圧される前の元の位置からのずれをいうこともある。右巻のウェーブコイルばね１０においては、接触点１０５の位置が時計回り方向に（図面左方向）ずれるとコイル径が拡がり、接触点１０５の位置が反時計回り方向に（図面右方向）ずれるとコイル径が縮まる。
FIG. 3 is a front view showing an aspect in which the contact point is shifted in the wave coil spring 110 shown in FIG. As a result of the wave coil spring 110 being pressed many times, the contact point 105 is shifted in the direction in which the coil diameter increases. The shift of the contact point 105 refers to a shift from the peak 107 of the peak or the peak 104 of the valley, and may also refer to a shift from the original position before being pressed from the set state. In the right-handed wave coil spring 10, when the position of the contact point 105 is shifted in the clockwise direction (left direction in the drawing), the coil diameter is expanded, and when the position of the contact point 105 is shifted in the counterclockwise direction (right direction in the drawing). The coil diameter is reduced.
ウェーブコイルばね１１０がセット荷重を加えられている状態から押圧されると、押圧される前と比べてそれぞれの波の波長が伸びる。そのため、ｎ巻目の谷部の頂点１０４と（ｎ＋１）巻目の山部の頂点１０７との接触点１０５がコイル径が拡がる方向にずれる。そして押圧を元のセット荷重に戻すと、ずれた接触点１０５が元の位置（頂点）に戻ろうとするが、接触点１０５の位置が斜面にあるため摩擦力の影響で完全に元の位置に戻り切らず、接触点１０５が頂点から少しだけずれた状態となる。そして押圧が何度も繰り返されると接触点１０５のずれが徐々に大きくなる。接触点１０５のずれが大きくなると、ばね特性が変化し、最悪の場合、いずれかの巻目が径方向に拡がって接触がはずれて座屈してしまうおそれがある。なお、波長が伸びても上下の座巻部は押圧部材１１６と平面で接触しているため、座巻部の位置はずれ難く、仮にずれたとしても負荷状態からセット状態に戻って荷重が小さくなるとずれが解消する。
When the wave coil spring 110 is pressed from a state where a set load is applied, the wavelength of each wave is extended as compared to before the wave coil spring 110 is pressed. Therefore, the contact point 105 between the apex 104 of the n-th valley and the apex 107 of the (n + 1) -th peak is shifted in the direction in which the coil diameter increases. When the pressure is returned to the original set load, the displaced contact point 105 tries to return to the original position (vertex), but since the position of the contact point 105 is on the slope, it is completely returned to the original position due to the influence of frictional force. The contact point 105 is slightly deviated from the vertex without returning. When the pressing is repeated many times, the displacement of the contact point 105 gradually increases. When the displacement of the contact point 105 becomes large, the spring characteristics change, and in the worst case, any winding may spread in the radial direction and the contact may come off and buckle. Even if the wavelength is extended, the upper and lower end winding portions are in contact with the pressing member 116 in a plane, so that the position of the end winding portion is difficult to shift, and even if the end winding is shifted, the load is reduced from the loaded state to the set state. The deviation is resolved.
そこで、第１実施形態に係るウェーブコイルばねは、あらかじめ接触点を頂点からコイル径が縮まる方向にずらして形成する。これは、ｎ巻目の谷部からちょうど１巻（３６０度）をわずかに越えた位置に（ｎ＋１）巻目の山部を位置させることで達成される。これにより、押圧を繰り返したとしても、ウェーブコイルばねの接触点の位置が、コイル径が拡がる方向にずれることを抑えることができる。また、製造に際しては単に接触点の位置をずらすだけでよく、加工が容易となり、接触点に係止機構を設ける場合と比べて製造コストを低減することができる。
Therefore, the wave coil spring according to the first embodiment is formed in advance by shifting the contact point from the apex in the direction in which the coil diameter is reduced. This is achieved by positioning the peak portion of the (n + 1) th turn at a position slightly beyond one turn (360 degrees) from the valley of the nth turn. Thereby, even if it repeats a press, it can suppress that the position of the contact point of a wave coil spring shifts | deviates to the direction which a coil diameter expands. Further, in manufacturing, the position of the contact point may be simply shifted, the processing becomes easy, and the manufacturing cost can be reduced as compared with the case where a locking mechanism is provided at the contact point.
図４は、第１実施形態に係るウェーブコイルばね１０の正面図を示す。このウェーブコイルばね１０は右巻であり、波形はサインカーブである。ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２とは、軸心方向に正対して接触している。
FIG. 4 shows a front view of the wave coil spring 10 according to the first embodiment. The wave coil spring 10 is right-handed and the waveform is a sine curve. The valley part 30 of the nth roll and the peak part 32 of the (n + 1) th roll are in direct contact with each other in the axial direction.
ｎ巻目の谷部３０の頂点２８と（ｎ＋１）巻目の山部３２の頂点２６は軸心方向に正対しておらず、（ｎ＋１）巻目の山部３２の頂点２６は、ｎ巻目の谷部３０の頂点２８に対して時計回り方向にずらしている。これにより、上下の接触点を結ぶ線ｌ１は、外方向から見て軸心に対して右上がりに傾斜する。この接触点の結線ｌ１と隣り合う接触点の結線ｌ２も同様に傾斜し、接触点の結線ｌ１および接触点の結線ｌ２は平行している。右巻のウェーブコイルばね１０では接触点の位置を頂点から大きくずらすほど、接触点の結線ｌ１および接触点の結線ｌ２は、外方向から見て軸心に対して時計回り方向に回転するようにずれる。ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２との接触点３４は斜面に位置している。
The apex 28 of the n-th valley 30 and the apex 26 of the (n + 1) -th peak 32 are not directly facing in the axial direction, and the apex 26 of the (n + 1) -th peak 32 is n It is shifted in the clockwise direction with respect to the apex 28 of the valley 30 of the eye. Thus, a line l 1 connecting the upper and lower contact point is inclined upward to the right with respect to the axis when viewed from the outside direction. The contact point connection l 1 and the contact point connection l 2 adjacent to the contact point are similarly inclined, and the contact point connection l 1 and the contact point connection l 2 are parallel to each other. The position of the wave spring 10 at the contact point of the right winding as shifted greatly from the apex, connection l 2 of connection l 1 and the contact point of the contact points is rotated in the clockwise direction relative to the axis as seen from the outward Shift like so. The contact point 34 between the valley 30 of the nth roll and the peak 32 of the (n + 1) th roll is located on the slope.
接触点３４は斜面に位置するため、摩擦角の斜面より急な斜面に接触点３４が位置すると、ウェーブコイルばね１０に荷重を加えた場合に接触点３４がずれることになる。そこで、接触点３４の位置を摩擦角の斜面と同じまたはより緩やかな斜面に設定する。なお、摩擦角θ０とは、斜面上の物体がすべりだす直前に、その斜面が水平となす角をいい、ｔａｎθ０＝μである。
Since the contact point 34 is located on the slope, if the contact point 34 is located on a slope that is steeper than the slope of the friction angle, the contact point 34 is displaced when a load is applied to the wave coil spring 10. Therefore, the position of the contact point 34 is set to the same or gentler slope as the slope of the friction angle. Note that the friction angle θ 0 is an angle between the inclined surface and the horizontal surface immediately before the object on the inclined surface slides, and tan θ 0 = μ.
具体的には、ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２との接触点３４を通る接線３６の傾斜角θが、－ａｒｃｔａｎμ度≦θ＜０度となるように、接触点３４の位置を設定する。なお、μはウェーブコイルばね１０を形成するばね鋼の静摩擦係数であり、たとえばμ＝０．１５、ａｒｃｔａｎμ度＝８．５度である。また、接触点３４を通る接線の傾斜角θは、ウェーブコイルばね１０の外周側からみて、（ｎ＋１）巻目の山部３２の頂点２６を通る接線の傾斜角を０度として、そこから反時計回りに回転すると正にカウントされ、以下に記載される傾斜角も同様である。これにより、接触点３４の位置がコイル径が拡がる方向にずれることを防ぎつつ、接触点３４がずれやすくなることを抑えることができる。なお、図４には自由状態のウェーブコイルばね１０を示すが、接触点３４を通る接線３６の傾斜角θは、ウェーブコイルばね１０がセット状態である際の角度であってよい。
Specifically, the inclination angle θ of the tangent line 36 passing through the contact point 34 between the n-th turn valley 30 and the (n + 1) -th turn ridge 32 is −arctan μ degree ≦ θ <0 degree. The position of the contact point 34 is set. Note that μ is a static friction coefficient of the spring steel forming the wave coil spring 10, and for example, μ = 0.15 and arctan μ degree = 8.5 degrees. In addition, the inclination angle θ of the tangent line passing through the contact point 34 is 0 ° with respect to the inclination angle of the tangent line passing through the apex 26 of the peak portion 32 of the (n + 1) winding as viewed from the outer peripheral side of the wave coil spring 10. When it rotates clockwise, it counts positively, and the inclination angle described below is the same. Accordingly, it is possible to prevent the contact point 34 from being easily shifted while preventing the position of the contact point 34 from shifting in the direction in which the coil diameter increases. 4 shows the wave coil spring 10 in a free state, the inclination angle θ of the tangent line 36 passing through the contact point 34 may be an angle when the wave coil spring 10 is in a set state.
より好ましくは、ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２との接触点３４を通る接線３６の傾斜角θが、θ≦－ａｒｃｔａｎ（μ／４）度となるように、接触点３４の位置を設定する。接線３６の傾斜角θは、μ＝０．１５であればθ≦－２．１４である。ウェーブコイルばね１０を押圧する間隔が長くなれば波長の伸びが大きくなって接触点３４がよりずれやすくなり、接触点３４の位置が（ｎ＋１）巻目の山部３２の頂点２６を越えて、コイル径が拡がるおそれがある。この構成によれば、接触点３４の位置を頂点２６から乖離させることで、接触点３４の位置がコイル径が拡がる方向にずれることをよりいっそう抑えることができる。また、加工誤差によって、接触点３４が頂点２６を越えてコイル径が拡がる方向の斜面に位置することを抑えることができる。
More preferably, the inclination angle θ of the tangent line 36 passing through the contact point 34 between the n-th turn valley 30 and the (n + 1) -th turn ridge 32 is θ ≦ −arctan (μ / 4) degrees. The position of the contact point 34 is set. The inclination angle θ of the tangent line 36 is θ ≦ −2.14 when μ = 0.15. If the interval between pressing the wave coil springs 10 is increased, the wavelength increases and the contact point 34 is more easily displaced. The position of the contact point 34 exceeds the apex 26 of the peak portion 32 of the (n + 1) winding, There is a possibility that the coil diameter may expand. According to this configuration, by shifting the position of the contact point 34 from the apex 26, it is possible to further suppress the position of the contact point 34 from shifting in the direction in which the coil diameter increases. Moreover, it can suppress that the contact point 34 is located in the slope of the direction which a coil diameter expands beyond the vertex 26 by a processing error.
また、ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２との接触点３４を通る接線３６の傾斜角θが、－ａｒｃｔａｎ（３μ／４）度≦θとなるように、接触点３４の位置を設定する。接線３６の傾斜角θは、μ＝０．１５であれば－６．４２≦θである。これにより、加工誤差等によって接触点３４の位置が摩擦角の斜面より急な斜面にずれて、接触点３４がずれやすくなることをよりいっそう抑えることができる。
Further, the contact angle is set so that the inclination angle θ of the tangent line 36 passing through the contact point 34 between the n-th turn valley 30 and the (n + 1) -th turn peak 32 is −arctan (3 μ / 4) degrees ≦ θ. The position of the point 34 is set. The inclination angle θ of the tangent line 36 is −6.42 ≦ θ when μ = 0.15. As a result, it is possible to further prevent the contact point 34 from being easily displaced due to the position of the contact point 34 being shifted to a steep slope from the slope of the friction angle due to a processing error or the like.
一方、板材が左巻に巻回されている場合、図４に示すウェーブコイルばね１０とは対称的に、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θは、０度＜θ≦ａｒｃｔａｎμ度となる。また、より好ましくは、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θは、ａｒｃｔａｎ（μ／４）度≦θ≦ａｒｃｔａｎ（３μ／４）度であってよい。
On the other hand, when the plate is wound in the left turn, the tangent line passing through the contact point between the n-th valley and the (n + 1) -th peak is symmetrical to the wave coil spring 10 shown in FIG. The inclination angle θ is 0 degree <θ ≦ arctan μ degree. More preferably, the inclination angle θ of the tangent line passing through the contact point between the n-th valley and the (n + 1) -th peak is arctan (μ / 4) degrees ≦ θ ≦ arctan (3 μ / 4). May be degrees.
図４に示すウェーブコイルばね１０には、コイル径が縮径することを規制する第１ガイド部材２０が設けられてよい。第１ガイド部材２０は、ドーナツ形状の台座部２４と、台座部２４の内周から立設された円筒部２２とを備える。台座部２４にはウェーブコイルばね１０の下側の座巻部が載せられる。円筒部２２の外径は、取り付け容易のため、ウェーブコイルばね１０の内径より少しだけ小さい値に設定される。ウェーブコイルばね１０は押圧されるため、円筒部２２の高さはウェーブコイルばね１０の高さより短い。円筒部２２はウェーブコイルばね１０の内周側に内挿される。第１ガイド部材２０の代わりにウェーブコイルばね１０をコイル径が縮径することを規制する円柱部材に取り付けて用いてもよい。
4 may be provided with a first guide member 20 that restricts the coil diameter from being reduced. The first guide member 20 includes a donut-shaped pedestal portion 24 and a cylindrical portion 22 erected from the inner periphery of the pedestal portion 24. The lower end winding portion of the wave coil spring 10 is placed on the pedestal portion 24. The outer diameter of the cylindrical portion 22 is set to a value slightly smaller than the inner diameter of the wave coil spring 10 for easy attachment. Since the wave coil spring 10 is pressed, the height of the cylindrical portion 22 is shorter than the height of the wave coil spring 10. The cylindrical portion 22 is inserted on the inner peripheral side of the wave coil spring 10. Instead of the first guide member 20, the wave coil spring 10 may be attached to a cylindrical member that restricts the coil diameter from being reduced.
ウェーブコイルばね１０は、接触点３４の位置をあらかじめコイル径が縮まる方向にずらしているため、コイル径が拡がる方向にはずれないものの、コイル径が縮まる方向にずれるおそれがある。そこで、第１ガイド部材２０を設けることで、ウェーブコイルばね１０のコイル径が縮径することを規制することができる。
Since the position of the contact point 34 is shifted in the direction in which the coil diameter is reduced in advance, the wave coil spring 10 may not shift in the direction in which the coil diameter increases, but may shift in the direction in which the coil diameter decreases. Therefore, by providing the first guide member 20, it is possible to restrict the coil diameter of the wave coil spring 10 from being reduced.
右巻のウェーブコイルばね１０において、第１ガイド部材２０が設けられ、かつ、ｎ巻目の谷部３０と（ｎ＋１）巻目の山部３２との接触点３４を通る接線３６の傾斜角θが、（ｎ＋１）巻目の山部３２の頂点を通る接線の傾斜角を０度として、θ＜０度となるように接触点３４の位置が設定される。これにより、コイル径の拡径および縮径を抑えることができる。より好ましくは、接線の傾斜角θはθ≦－ａｒｃｔａｎ（μ／４）度に設定される。これによりコイル径の拡径をよりいっそう抑えることができる。
In the right-handed wave coil spring 10, the first guide member 20 is provided, and the inclination angle θ of the tangent line 36 passing through the contact point 34 between the n-th valley part 30 and the (n + 1) -th peak part 32. However, the position of the contact point 34 is set so that θ <0 degree, where the inclination angle of the tangent line passing through the apex of the peak portion 32 of the (n + 1) th roll is 0 degree. Thereby, the expansion and contraction of the coil diameter can be suppressed. More preferably, the inclination angle θ of the tangent line is set to θ ≦ −arctan (μ / 4) degrees. Thereby, the expansion of the coil diameter can be further suppressed.
一方、板材が左巻に巻回されている場合、第１ガイド部材２０が設けられ、かつ、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θが、（ｎ＋１）巻目の山部の頂点を通る接線の傾斜角を０度として、０度＜θとなるように接触点の位置が設定される。より好ましくは、接線の傾斜角はａｒｃｔａｎ（μ／４）度≦θに設定される。
On the other hand, when the plate material is wound in the left turn, the first guide member 20 is provided, and the inclination angle of the tangent line passing through the contact point between the n-th valley and the (n + 1) -th peak is The position of the contact point is set so that θ is 0 degrees <θ, where θ is the inclination angle of the tangent line passing through the apex of the peak of the (n + 1) th roll. More preferably, the inclination angle of the tangent is set to arctan (μ / 4) degrees ≦ θ.
図５は、第１実施形態に係るウェーブコイルばね４０の変形例の正面図を示す。本発明者は、山部と谷部の接触点の位置ずれが座巻部との接触点に発生しやすいとの知見を得た。そこで、ウェーブコイルばね４０は上下の座巻部だけ、コイル径が縮径する方向に接触点の位置をずらしてもよい。
FIG. 5 shows a front view of a modification of the wave coil spring 40 according to the first embodiment. The present inventor has obtained knowledge that misalignment of the contact point between the peak portion and the valley portion is likely to occur at the contact point with the end winding portion. Therefore, the wave coil spring 40 may shift the position of the contact point only in the upper and lower end winding portions in the direction in which the coil diameter is reduced.
具体的には、ウェーブコイルばね４０の上側から１巻目の谷部４３の頂点４４を上側から２巻目の山部４５の頂点４６に対し反時計回り方向（図面右方向）にずらし、下側から１巻目の山部５１の頂点５２を下側から２巻目の谷部４９の頂点４８に対し時計回り方向（図面左方向）にずらす。そして図５に示すように、座巻部と接触しておらず、軸心方向内側に位置する接触点を上下に結ぶ線ｍ１、結線ｍ３は軸心と平行である。座巻部との接触点４２および接触点５０を含む結線ｍ２は、座巻部との接触点４２および接触点５０と、その接触点４２および接触点５０より軸心方向内側に位置する接触点５３，５４とを上下に結んだものである。この結線ｍ２は、中央部分では結線ｍ１および結線ｍ３と平行であるものの、座巻部との接触点４２，５０を結ぶ線分では結線ｍ１および結線ｍ３に対して傾斜している。これにより、効率的にコイル径が拡がることを抑えることができる。
Specifically, the apex 44 of the valley portion 43 of the first winding from the upper side of the wave coil spring 40 is shifted counterclockwise (rightward in the drawing) with respect to the apex 46 of the peak portion 45 of the second winding from the upper side. The apex 52 of the peak 51 of the first roll from the side is shifted clockwise (leftward in the drawing) with respect to the apex 48 of the valley 49 of the second roll from the bottom. As shown in FIG. 5, the lines m 1 and m 3 that connect the contact points that are not in contact with the end turn portion and are located on the inner side in the axial direction are parallel to the axial center. Wiring m 2 comprising contact points 42 and the contact point 50 between the end turn portion includes a contact point 42 and contact point 50 with the end turn portion, the contact which is positioned in the axial direction inside the the contact point 42 and contact point 50 Points 53 and 54 are connected vertically. Although this connection m 2 is parallel to the connection m 1 and the connection m 3 at the central portion, the connection m 42 is inclined with respect to the connection m 1 and the connection m 3 at the line segment connecting the contact points 42 and 50 with the end winding portion. Yes. Thereby, it can suppress that a coil diameter expands efficiently.
上側から１巻目の谷部４３と２巻目の山部４５との接触点４２を通る接線の傾斜角θが、２巻目の山部４５の頂点４６を通る接線の傾斜角を０度として、－ａｒｃｔａｎμ度≦θ＜０度となるように、接触点４２の位置を設定する。より好ましくは、接触点４２を通る接線の傾斜角θは、－ａｒｃｔａｎ（３μ／４）度≦θ≦－ａｒｃｔａｎ（μ／４）度であってよい。また、ウェーブコイルばね４０には、コイル径が縮径することを規制する第１ガイド部材２０が設けられてもよい。
From the upper side, the inclination angle θ of the tangent line passing through the contact point 42 between the valley part 43 of the first roll and the peak part 45 of the second roll is 0 degree. The position of the contact point 42 is set so that −arctan μ degree ≦ θ <0 degree. More preferably, the inclination angle θ of the tangent line passing through the contact point 42 may be −arctan (3 μ / 4) degrees ≦ θ ≦ −arctan (μ / 4) degrees. Further, the wave coil spring 40 may be provided with a first guide member 20 that restricts the coil diameter from being reduced.
図６は、第２実施形態に係るウェーブコイルばね６０の正面図を示す。図示するウェーブコイルばね６０は右巻であり、ウェーブコイルばね６０にはコイル径が拡径することを規制する第２ガイド部材６２が設けられる。点線で図示する第２ガイド部材６２は底部を有する円筒形であり、ウェーブコイルばね６０の外周側を囲むように外挿される。組立てた際にウェーブコイルばね６０の上側の座巻部は第２ガイド部材６２の底部に接触する。ガイド部材６２の内径は、ウェーブコイルばね６０の外径より少しだけ大きくなるように設定される。このようなガイド部材６２が設けられたウェーブコイルばね６０において、ウェーブコイルばね６０のｎ巻目の谷部６６と（ｎ＋１）巻目の山部６７との接触点６３は、コイル径が拡径する方向にあらかじめずらしている。
FIG. 6 shows a front view of the wave coil spring 60 according to the second embodiment. The illustrated wave coil spring 60 is right-handed, and the wave coil spring 60 is provided with a second guide member 62 that restricts the coil diameter from being increased. The second guide member 62 illustrated by a dotted line is a cylindrical shape having a bottom, and is extrapolated so as to surround the outer peripheral side of the wave coil spring 60. When assembled, the upper end winding portion of the wave coil spring 60 contacts the bottom portion of the second guide member 62. The inner diameter of the guide member 62 is set to be slightly larger than the outer diameter of the wave coil spring 60. In the wave coil spring 60 provided with such a guide member 62, the contact point 63 between the valley portion 66 of the nth winding and the peak portion 67 of the (n + 1) th winding of the wave coil spring 60 has an increased coil diameter. The direction is shifted in advance.
具体的には、ウェーブコイルばね６０に第２ガイド部材６２が設けられ、かつ、ｎ巻目の谷部６６と（ｎ＋１）巻目の山部６７との接触点６３を通る接線６８の傾斜角θが、（ｎ＋１）巻目の山部６７の頂点６４を通る接線の傾斜角を０度として、０度＜θとなるように接触点６３の位置が設定される。この構成により、第２ガイド部材６２によりコイル径が拡径することを抑えつつ、接触点６３の位置をずらしたことによりコイル径の縮径を抑えることができる。より好ましくは、接触点６３を通る接線６８の傾斜角θが、ａｒｃｔａｎ（μ／４）度≦θとなるように接触点６３の位置が設定される。これによりいっそうコイル径の縮径を抑えることができる。
Specifically, the second guide member 62 is provided on the wave coil spring 60, and the inclination angle of the tangent line 68 passing through the contact point 63 between the n-th turn valley 66 and the (n + 1) -th turn ridge 67 is provided. The position of the contact point 63 is set so that θ is 0 ° <θ, where θ is an inclination angle of a tangent line passing through the apex 64 of the peak portion 67 of the (n + 1) th roll. With this configuration, it is possible to suppress a reduction in the coil diameter by shifting the position of the contact point 63 while suppressing the coil diameter from being increased by the second guide member 62. More preferably, the position of the contact point 63 is set so that the inclination angle θ of the tangent line 68 passing through the contact point 63 satisfies arctan (μ / 4) degrees ≦ θ. As a result, the coil diameter can be further reduced.
一方、ウェーブコイルばねが左巻に巻回されている場合、ウェーブコイルばねに第２ガイド部材６２が設けられ、かつ、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点を通る接線の傾斜角θが、θ＜０度となるように接触点の位置が設定される。また、より好ましくは、接触点６３を通る接線６８の傾斜角θが、θ≦－ａｒｃｔａｎ（μ／４）度となるように接触点の位置が設定される。
On the other hand, when the wave coil spring is wound in the left turn, the second guide member 62 is provided in the wave coil spring, and the contact point between the valley of the nth turn and the peak of the (n + 1) turn The position of the contact point is set so that the inclination angle θ of the tangent line passing through θ satisfies θ <0 degrees. More preferably, the position of the contact point is set so that the inclination angle θ of the tangent line 68 passing through the contact point 63 satisfies θ ≦ −arctan (μ / 4) degrees.
本発明は上述の各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各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. Embodiments described may also be included within the scope of the present invention.
たとえば、ウェーブコイルばねは、波形のピッチが交互に長尺のピッチと短尺のピッチになるように設定され、さらに長尺ピッチに設定された谷部に対して長尺ピッチに設定された山部を対向させて接触させる。つまり、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点が長尺ピッチの斜面に位置するように設定される。これにより、接触点が短尺ピッチの斜面より緩やかな長尺ピッチの斜面に位置するため、接触点のずれをいっそう抑えることができる。なお、ｎ巻目の谷部と（ｎ＋１）巻目の山部との接触点は、摩擦角の斜面と同じまたはより緩やかな斜面に位置するように設定されてよい。
For example, the wave coil spring is configured so that the waveform pitch is alternately a long pitch and a short pitch, and a peak portion that is set to a long pitch with respect to a valley portion that is set to a long pitch. Make contact with each other. That is, the contact point between the n-th turn valley and the (n + 1) -th turn peak is set to be located on the long pitch slope. Thereby, since the contact point is located on the slope having the longer pitch than the slope having the shorter pitch, the contact point can be further prevented from shifting. It should be noted that the contact point between the valley of the nth roll and the peak of the (n + 1) th roll may be set so as to be located on the same or a gentle slope as the slope of the friction angle.
１０，４０，６０ ウェーブコイルばね、 １２ 座巻部、 １４ 山部、 １６ 谷部、 １８ 端部、 ２０ 第１ガイド部材、 ２２ 円筒部、 ２４ 台座部、 ６２ 第２ガイド部材、 １１６ 押圧部材。
10, 40, 60 wave coil springs, 12 cigarettes, 14 mountains, 16 valleys, 18 edges, 20 first guide members, 22 cylindrical parts, 24 pedestals, 62 second guide members, 116 pressing members.
本発明によれば、波形の板材を螺旋状に巻回して形成したウェーブコイルばねに利用することができる。
According to the present invention, it can be used for a wave coil spring formed by spirally winding a corrugated plate material.
Claims (4)
- 山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されたウェーブコイルばねであって、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部とは、軸心方向に対向して接触し、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の前記山部の頂点を通る接線の傾斜角を０度として、
前記板材が右巻に巻回されている場合、－ａｒｃｔａｎμ度≦θ＜０度であり、
前記板材が左巻に巻回されている場合、０度＜θ≦ａｒｃｔａｎμ度であることを特徴とするウェーブコイルばね。
ｎは自然数、μは板材の静摩擦係数である。 A wave coil spring formed by spirally winding a corrugated plate material having crests and troughs,
The valley of the nth roll and the peak of the (n + 1) th roll are in contact with each other in the axial direction,
The inclination angle θ of the tangent line passing through the contact point between the valley of the nth roll and the peak of the (n + 1) th roll is 0 degree of the tangential inclination passing through the apex of the peak of the (n + 1) th roll. As
When the plate material is wound in a right-hand winding, −arctan μ degree ≦ θ <0 degree,
A wave coil spring characterized by satisfying 0 ° <θ ≦ arctan μ ° when the plate material is wound left-handed.
n is a natural number and μ is a coefficient of static friction of the plate material. - 山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されたウェーブコイルばねであって、
ばね本体の内周側に、ばね本体が縮径することを規制するガイド部材が設けられ、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部とは、軸心方向に対向して接触し、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の前記山部の頂点を通る接線の傾斜角を０度として、
前記板材が右巻に巻回されている場合、θ＜０度であり、
前記板材が左巻に巻回されている場合、０度＜θであることを特徴とするウェーブコイルばね。
ｎは自然数である。 A wave coil spring formed by spirally winding a corrugated plate material having crests and troughs,
A guide member is provided on the inner peripheral side of the spring body to restrict the diameter of the spring body from being reduced.
The valley of the nth roll and the peak of the (n + 1) th roll are in contact with each other in the axial direction,
The inclination angle θ of the tangent line passing through the contact point between the valley of the nth roll and the peak of the (n + 1) th roll is 0 degree of the tangential inclination passing through the apex of the peak of the (n + 1) th roll. As
When the plate material is wound in a right-hand winding, θ <0 degree,
A wave coil spring characterized by satisfying 0 ° <θ when the plate material is wound left-handed.
n is a natural number. - 山部と谷部とを交互に有する波形の板材を螺旋状に巻回して形成されたウェーブコイルばねであって、
ばね本体の外周側に、ばね本体が拡径することを規制するガイド部材が設けられ、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部とは、軸心方向に対向して接触し、
ｎ巻目の前記谷部と（ｎ＋１）巻目の前記山部との接触点を通る接線の傾斜角θは、（ｎ＋１）巻目の前記山部の頂点を通る接線の傾斜角を０度として、
前記板材が右巻に巻回されている場合、０度＜θであり、
前記板材が左巻に巻回されている場合、θ＜０度であることを特徴とするウェーブコイルばね。
ｎは自然数である。 A wave coil spring formed by spirally winding a corrugated plate material having crests and troughs,
A guide member is provided on the outer peripheral side of the spring body to restrict the diameter of the spring body from expanding,
The valley of the nth roll and the peak of the (n + 1) th roll are in contact with each other in the axial direction,
The inclination angle θ of the tangent line passing through the contact point between the valley of the nth roll and the peak of the (n + 1) th roll is 0 degree of the tangential inclination passing through the apex of the peak of the (n + 1) th roll. As
When the plate material is wound in a right-hand winding, 0 degree <θ,
A wave coil spring characterized in that θ <0 degrees when the plate is wound left-handed.
n is a natural number. - 前記傾斜角θは、
前記板材が右巻に巻回されている場合、θ≦－ａｒｃｔａｎ（μ／４)度であり、
前記板材が左巻に巻回されている場合、－ａｒｃｔａｎ（μ／４)度≦θであることを特徴とする請求項１または２に記載のウェーブコイルばね。 The inclination angle θ is
When the plate is wound clockwise, θ ≦ −arctan (μ / 4) degrees,
3. The wave coil spring according to claim 1, wherein when the plate member is wound left-handed, −arctan (μ / 4) degrees ≦ θ.
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| JP2012518245A JP5337302B2 (en) | 2010-05-31 | 2011-05-30 | Wave coil spring |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2842421A1 (en) * | 2013-08-28 | 2015-03-04 | Shimano Inc. | Coiled wave spring and drag knob |
| WO2018230491A1 (en) * | 2017-06-15 | 2018-12-20 | いすゞ自動車株式会社 | Coiled wave spring |
| WO2019035355A1 (en) * | 2017-08-14 | 2019-02-21 | Ｋｙｂ株式会社 | Hydraulic rotary machine |
| US20230081050A1 (en) * | 2021-09-13 | 2023-03-16 | Rotor Clip Company, Inc. | Multiple variable turn wave springs, methods of pre-loading components with said springs, and methods of manufacturing said springs |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110671457A (en) * | 2019-10-06 | 2020-01-10 | 贾有华 | Fence type spring and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296260A (en) * | 1991-03-25 | 1992-10-20 | Nippon Pillar Packing Co Ltd | Compression spring for mechanical seal and manufacture thereof |
| JPH05164195A (en) * | 1991-12-18 | 1993-06-29 | Yasuo Matsuda | Wire stretching tool |
| JPH076536U (en) * | 1993-06-30 | 1995-01-31 | 加藤発条株式会社 | Wave coil spring |
| JP2004225880A (en) * | 2002-11-25 | 2004-08-12 | Matsumura Koki Kk | Wave spring |
| JP2007270934A (en) * | 2006-03-31 | 2007-10-18 | Piolax Inc | Wave coil spring |
| JP2007321832A (en) * | 2006-05-31 | 2007-12-13 | Piolax Inc | Waved coil spring |
| JP2009192035A (en) * | 2008-02-18 | 2009-08-27 | Showa Hatsujo Seisakusho:Kk | Spring characteristic adjustment method of compression type coil spring, and spring characteristic adjustment type compression energizing body |
-
2011
- 2011-05-30 JP JP2012518245A patent/JP5337302B2/en not_active Expired - Fee Related
- 2011-05-30 WO PCT/JP2011/003016 patent/WO2011152025A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04296260A (en) * | 1991-03-25 | 1992-10-20 | Nippon Pillar Packing Co Ltd | Compression spring for mechanical seal and manufacture thereof |
| JPH05164195A (en) * | 1991-12-18 | 1993-06-29 | Yasuo Matsuda | Wire stretching tool |
| JPH076536U (en) * | 1993-06-30 | 1995-01-31 | 加藤発条株式会社 | Wave coil spring |
| JP2004225880A (en) * | 2002-11-25 | 2004-08-12 | Matsumura Koki Kk | Wave spring |
| JP2007270934A (en) * | 2006-03-31 | 2007-10-18 | Piolax Inc | Wave coil spring |
| JP2007321832A (en) * | 2006-05-31 | 2007-12-13 | Piolax Inc | Waved coil spring |
| JP2009192035A (en) * | 2008-02-18 | 2009-08-27 | Showa Hatsujo Seisakusho:Kk | Spring characteristic adjustment method of compression type coil spring, and spring characteristic adjustment type compression energizing body |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2842421A1 (en) * | 2013-08-28 | 2015-03-04 | Shimano Inc. | Coiled wave spring and drag knob |
| JP2015043728A (en) * | 2013-08-28 | 2015-03-12 | 株式会社シマノ | Coiled wave spring and drag knob |
| CN104412948A (en) * | 2013-08-28 | 2015-03-18 | 株式会社岛野 | Coiled wave spring and drag knob |
| US9700033B2 (en) | 2013-08-28 | 2017-07-11 | Shimano Inc. | Coiled wave spring and drag knob |
| TWI627900B (en) * | 2013-08-28 | 2018-07-01 | 島野股份有限公司 | Coiled wave spring and drag knob |
| WO2018230491A1 (en) * | 2017-06-15 | 2018-12-20 | いすゞ自動車株式会社 | Coiled wave spring |
| CN110741177A (en) * | 2017-06-15 | 2020-01-31 | 五十铃自动车株式会社 | Spiral corrugated spring |
| CN110741177B (en) * | 2017-06-15 | 2021-07-30 | 五十铃自动车株式会社 | Spiral corrugated spring |
| WO2019035355A1 (en) * | 2017-08-14 | 2019-02-21 | Ｋｙｂ株式会社 | Hydraulic rotary machine |
| US20230081050A1 (en) * | 2021-09-13 | 2023-03-16 | Rotor Clip Company, Inc. | Multiple variable turn wave springs, methods of pre-loading components with said springs, and methods of manufacturing said springs |
| US11867247B2 (en) * | 2021-09-13 | 2024-01-09 | Rotor Clip Company, Inc. | Multiple variable turn wave springs, methods of pre-loading components with said springs, and methods of manufacturing said springs |
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| JPWO2011152025A1 (en) | 2013-07-25 |
| JP5337302B2 (en) | 2013-11-06 |
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