WO2016006598A1 - Male screw body, coupling member, female screw body, and screw body fastening structure - Google Patents

Male screw body, coupling member, female screw body, and screw body fastening structure Download PDF

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Publication number
WO2016006598A1
WO2016006598A1 PCT/JP2015/069500 JP2015069500W WO2016006598A1 WO 2016006598 A1 WO2016006598 A1 WO 2016006598A1 JP 2015069500 W JP2015069500 W JP 2015069500W WO 2016006598 A1 WO2016006598 A1 WO 2016006598A1
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Prior art keywords
screw
male screw
female
washer
male
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PCT/JP2015/069500
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French (fr)
Japanese (ja)
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裕 道脇
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株式会社NejiLaw
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Priority to JP2014-140021 priority Critical
Priority to JP2014140021 priority
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Publication of WO2016006598A1 publication Critical patent/WO2016006598A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30Locking exclusively by special shape of the screw-thread

Abstract

In this male screw body, a male-screw-body-side coupling region is formed that has a non-circular shaped cross section when viewed from the axial direction. A washer (coupling member) has a through hole that is non-circular, and engages the outer peripheral direction of the male-screw-body-side coupling region. Furthermore, the washer is provided with an engagement mechanism that engages a female screw body in the peripheral direction. As a result, rotation of screw body in a specific direction is reliably prevented by means of a simple structure.

Description

雄ねじ体、連携部材、雌ねじ体、ねじ体の締結構造Male threaded body, linkage member, female threaded body, screw body fastening structure
 本発明は、雄ねじ体、連携部材、雌ねじ体等を利用した締結構造に関し、特にねじ体の逆回転を防止する際に好適な締結構造に関する。 The present invention relates to a fastening structure using a male screw body, a cooperating member, a female screw body, and the like, and particularly to a fastening structure suitable for preventing reverse rotation of the screw body.
 従来、様々な場面で、被締結物を締結するためにねじ体が用いられている。このねじ体は、柱状の外周に螺線状の溝が形成される雄ねじ体と、筒部材の内周に螺線状の溝が形成される雌ねじ体を螺合させる構造となっている。 Conventionally, screw bodies have been used to fasten objects to be fastened in various situations. This screw body has a structure in which a male screw body in which a spiral groove is formed on a columnar outer periphery and a female screw body in which a spiral groove is formed on the inner periphery of a cylindrical member are screwed together.
 使用時は、被締結部材に形成される孔に雄ねじ体を挿入してから、雌ねじ体を螺合させる。結果、雄ねじ体の頭部と雌ねじ体の筒部材によって被締結物が挟み込まれる。このような締結用のねじ体を簡便に使用出来るように工夫されたものとしては、雄ねじ体の一端に六角柱状の頭部を形成して成る所謂ボルトと、外周面が六角形柱状に形成されるナットの組み合わせから成るものがある。他にも、頭部が六角形状ではなく、端面にすり割り(マイナス穴)や十字穴(プラス穴)が形成された、いわゆる小ねじなども広く用いられている。 When using, insert the male screw body into the hole formed in the fastened member, and then screw the female screw body. As a result, the fastened object is sandwiched between the head of the male screw body and the cylindrical member of the female screw body. What is devised so that such a screw body for fastening can be used easily is a so-called bolt formed by forming a hexagonal column head at one end of the male screw member, and an outer peripheral surface formed in a hexagonal column shape. There are some combinations of nuts. In addition, a so-called small screw having a head portion that is not hexagonal and has a slit (minus hole) or a cross hole (plus hole) formed on the end face is also widely used.
 また、ねじ体の締結時に、雄ねじ体の周囲にワッシャ(座金)を挿入することが行われている。このワッシャは、締結時に被締結物を座屈や傷等から護ったり、逆に、被締結物に積極的に押し当てることによって、ねじ体の緩みを抑制したりする。 Also, a washer (washer) is inserted around the male screw body when the screw body is fastened. This washer protects the object to be fastened from buckling or scratches at the time of fastening, and conversely suppresses loosening of the screw body by positively pressing the object to be fastened.
 例えば、ワッシャには、一般的なリング形状の「平ワッシャ」の他、内周や外周に半径方向に延びる突起を有し、被締結部材やねじ体と係合して緩みを防止する「舌付きワッシャ」、軸方向に折れ曲がった短い爪が被締結物と係合する「爪付きワッシャ」、弾性変形によってねじ体の緩みを防止する「ばねワッシャ」、締結面に食い込ませるための歯を周囲に備えた「歯付きワッシャ」などが存在する。 For example, the washer has a general ring-shaped “flat washer” and a protrusion extending in the radial direction on the inner periphery and outer periphery, and is engaged with a member to be fastened or a screw body to prevent loosening. `` Washer with hook '', `` Washer with claw '' in which short claws bent in the axial direction engage with the object to be fastened, `` Spring washer '' to prevent loosening of the screw body by elastic deformation, teeth around the fastening surface There is a “toothed washer” and so on.
 しかしながら、従来のワッシャは、ねじ体との間の緩み防止構造に関して、摩擦や食い込みを期待する程度であるため、よく知られている通りその効果は不十分なものであった。従って、振動等が激しい環境では、ワッシャを用いたとしても、ねじ体が徐々に緩んでしまうという問題があった。 However, since the conventional washer is only about expecting friction and biting in the structure for preventing loosening between the screw body, its effect is insufficient as is well known. Therefore, in an environment where vibrations and the like are severe, there is a problem that even if a washer is used, the screw body gradually loosens.
 本発明は、上記問題点に鑑みて本発明者の鋭意研究により成されたものであり、雄ねじ体、連携部材、雌ねじ体等を有効活用することによって、簡易な構造によって、高度にねじ体の逆回転防止、即ち、緩み止めを行う締結構造を提供することを目的とする。 The present invention has been made by the inventor's diligent research in view of the above problems, and by effectively utilizing the male screw body, the cooperating member, the female screw body, etc., the screw body is highly sophisticated by a simple structure. An object of the present invention is to provide a fastening structure that prevents reverse rotation, that is, prevents loosening.
 上記目的を達成する本発明は、雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成されることを特徴とする雄ねじ体である。 The present invention for achieving the above object is a male screw body characterized in that a male screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed in a shaft portion having a male screw portion.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域が、前記雄ねじ部と重なるように形成されることを特徴とする。 In connection with the male screw body, the male screw side cooperation region is formed to overlap the male screw portion.
 上記雄ねじ体に関連して、前記雄ねじ部におけるねじ山の一部が省略された形状とすることで、前記雄ねじ側連携領域が、前記雄ねじ部と重なるように形成されることを特徴とする。 In connection with the male screw body, the male screw side cooperation region is formed so as to overlap the male screw portion by forming a shape in which a part of the screw thread in the male screw portion is omitted.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域は、前記雄ねじ部におけるねじ山の高さの4分の3を上限として省略された形状となることを特徴とする。 In connection with the male screw body, the male screw side cooperation region has an abbreviated shape with an upper limit of three-fourths of the thread height in the male screw portion.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域が、前記雄ねじ部よりも基端側の基部と重なるように形成されることを特徴とする。 In connection with the male screw body, the male screw side cooperation region is formed so as to overlap with a base portion on the base end side with respect to the male screw portion.
 上記雄ねじ体に関連して、前記基部における前記雄ねじ側連携領域の軸心からの最大距離が、前記雄ねじ部の軸心からの最大距離よりも大きくなることを特徴とする。 In connection with the male screw body, the maximum distance from the axial center of the male screw side cooperation region in the base portion is larger than the maximum distance from the axial center of the male screw portion.
 上記雄ねじ体に関連して、前記基部における前記雄ねじ側連携領域の軸心からの最小距離が、前記雄ねじ部の軸心からの最大距離よりも大きくなることを特徴とする。 In connection with the male screw body, the minimum distance from the axial center of the male screw side cooperation region in the base portion is larger than the maximum distance from the axial center of the male screw portion.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域が、前記軸部に挿入される連携部材と周方向に係合することを特徴とする。 In connection with the male screw body, the male screw side cooperation region is engaged with a cooperation member inserted into the shaft portion in a circumferential direction.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域において前記軸部に挿入される連携部材と係合する軸方向距離が、前記雄ねじ部のねじ山のピッチ以上となることを特徴とする。 In relation to the male screw body, an axial distance that engages with a cooperation member inserted into the shaft portion in the male screw side cooperation region is equal to or greater than a pitch of a thread of the male screw portion.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域において前記軸部に挿入される連携部材と係合する軸方向距離が、前記雄ねじ部のねじ山のピッチの二倍以上となることを特徴とする。 In relation to the male screw body, in the male screw side cooperation region, the axial distance to engage with the cooperation member inserted into the shaft part is at least twice the pitch of the thread of the male screw part. To do.
 上記雄ねじ体に関連して、前記雄ねじ側連携領域が、螺旋状に形成されることを特徴とする。 In connection with the male screw body, the male screw side cooperation region is formed in a spiral shape.
 上記目的を達成する本発明は、雄ねじ体の雄ねじ部を挿通させ得る貫通孔が形成される連携部材であって、前記貫通孔が非正円形となっており、かつ、前記雄ねじ体と螺合する雌ねじ体と周方向に係合する係合機構を有することを特徴とする連携部材である。 The present invention that achieves the above object is a cooperating member in which a through-hole through which a male screw portion of a male screw body can be inserted is formed, wherein the through-hole has a non-circular shape and is screwed with the male screw body It is a cooperation member characterized by having the engaging mechanism engaged with the female screw body to perform in the peripheral direction.
 上記連携部材に関連して、前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチ以上となることを特徴とする。 In connection with the cooperation member, the axial distance of the through hole is greater than or equal to the pitch of the thread of the male screw body.
 上記連携部材に関連して、前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチの二倍以上となることを特徴とする。 In connection with the cooperation member, the axial distance of the through hole is more than twice the pitch of the thread of the male screw body.
 上記連携部材に関連して、前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチの三倍以上となることを特徴とする。 In connection with the cooperation member, the axial distance of the through hole is more than three times the pitch of the thread of the male screw body.
 上記連携部材に関連して、前記係合機構は、周方向に複数の凹凸を有することを特徴とする。 In connection with the cooperation member, the engagement mechanism has a plurality of irregularities in the circumferential direction.
 上記連携部材に関連して、前記雌ねじ体と対向する面が、軸心側が前記雌ねじ体側に凸となる円錐形状のテーパ面となることを特徴とする。 In relation to the cooperation member, the surface facing the female screw body is a conical tapered surface whose axial center is convex toward the female screw body.
 上記連携部材に関連して、前記雌ねじ体に対する前記係合機構は、軸方向の両表面にそれぞれ形成されることを特徴とする。 In connection with the cooperation member, the engagement mechanism for the female screw body is formed on both axial surfaces.
 上記連携部材に関連して、該連携部材は、ワッシャであることを特徴とする。 In connection with the above-mentioned link member, the link member is a washer.
 上記目的を達成する本発明は、雌ねじ部を有する筒部において、軸方向から視て断面非正円形となる雌ねじ側連携領域が形成されることを特徴とする雌ねじ体である。 The present invention that achieves the above object is an internal thread body in which an internal thread side cooperation region having a non-circular cross section when viewed in the axial direction is formed in a cylindrical portion having an internal thread portion.
 上記雌ねじ体に関連して、前記雌ねじ側連携領域の軸心からの最小距離は、前記雌ねじ部の軸心からの最小距離よりも大きくなることを特徴とする。 In connection with the female screw body, the minimum distance from the axial center of the female screw side cooperation region is larger than the minimum distance from the axial center of the female screw portion.
 上記雌ねじ体に関連して、前記雌ねじ側連携領域は、雄ねじ体の軸部と周方向に係合することを特徴とする。 In connection with the female screw body, the female screw side cooperation region is engaged with a shaft portion of the male screw body in a circumferential direction.
 上記雌ねじ体に関連して、前記雌ねじ側連携領域は、半径方向に弾性変形可能となっていることを特徴とする。 In connection with the female screw body, the female screw side cooperation region is elastically deformable in the radial direction.
 上記目的を達成する本発明は、雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成される雄ねじ体と、前記雄ねじ部を挿通させ得る貫通孔が形成される連携部材であって、前記貫通孔が非正円形となることで前記雄ねじ側連携領域と周方向に係合し、かつ、前記雄ねじ体と螺合する雌ねじ体と周方向に係合する係合機構を有することを特徴とする連携部材と、を備えることを特徴とするねじ体締結構造である。 The present invention that achieves the above object has a male screw body in which a male screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed in a shaft portion having a male screw portion, and a through-hole through which the male screw portion can be inserted. A formed cooperative member that engages in the circumferential direction with the male screw side cooperative region by forming the through hole in a non-circular shape, and engages in a circumferential direction with a female screw body that is screwed with the male screw body A screw body fastening structure comprising: a cooperating member characterized by having an engaging mechanism.
 上記ねじ体締結構造に関連して、前記連携部材は、前記雌ねじ体との前記係合機構を、軸方向の両表面にそれぞれ有しており、前記雌ねじ体が前記連携部材の軸方向の両側に配置されることで、該雌ねじ体が前記連携部材と周方向に係合することを特徴とする。 In relation to the screw body fastening structure, the cooperation member has the engagement mechanism with the female screw body on both surfaces in the axial direction, and the female screw body has both sides in the axial direction of the cooperation member. The female screw body is engaged with the cooperation member in the circumferential direction.
 上記目的を達成する本発明は、雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成される雄ねじ体と、前記雄ねじ部と螺合する雌ねじ部を有する筒部において、軸方向から視て断面非正円形となる雌ねじ側連携領域が形成される雌ねじ体と、を備え、前記雄ねじ側連携領域と前記雌ねじ側連携領域は、外力による相対回転を許容しつつ、互いに周方向に係合する構造となっていることを特徴とするねじ体締結構造である。 The present invention that achieves the above object includes a male screw body in which a male screw side cooperation region having a non-circular cross-section when viewed from the axial direction is formed in a shaft portion having a male screw portion, and a female screw portion that is screwed with the male screw portion. And a female screw body in which a female screw side cooperative region having a non-circular cross section when viewed in the axial direction is formed, and the male screw side cooperative region and the female screw side cooperative region allow relative rotation by an external force. However, the screw body fastening structure is characterized in that they are structured to engage with each other in the circumferential direction.
 本発明によれば、簡単な構造でありながらも、ねじ体の逆回転防止、例えば、ねじ体を緩ませる方向の回転を防止することでねじ体の緩み止めを確実に行う事が出来るようになる。 According to the present invention, the screw body can be reliably prevented from loosening by preventing the screw body from rotating backward, for example, by preventing the screw body from rotating in the direction in which the screw body is loosened. Become.
本発明の第一実施形態に係るねじ体の締結構造の締結状態を示す図である。It is a figure which shows the fastening state of the fastening structure of the screw body which concerns on 1st embodiment of this invention. 本発明の第一実施形態に係るねじ体の締結構造の(A)雄ねじ体の正面図、(B)雄ねじ体の底面図である。It is the front view of the (A) external thread body of the fastening structure of the thread body concerning a first embodiment of the present invention, and (B) the bottom view of the external thread body. 本発明の第一実施形態に係るねじ体の締結構造の(A)ワッシャの正面断面図、(B)ワッシャの底面図、(C)雌ねじ体の上面図、(D)雌ねじ体の正面図である。1A is a front sectional view of a washer, (B) a bottom view of a washer, (C) a top view of an internal thread body, and (D) a front view of an internal thread body of a fastening structure of a thread body according to a first embodiment of the present invention. is there. 本発明の第一実施形態に係るねじ体の締結構造の締結途中の状態を示す図である。It is a figure which shows the state in the middle of the fastening of the fastening structure of the screw body which concerns on 1st embodiment of this invention. (A)は本発明の第一実施形態に係るねじ体の締結構造の雌ねじ体とワッシャの締結状態図であり、(B)乃至(D)はその変形例を示す図である。(A) is the fastening state figure of the internal thread body and washer of the fastening structure of the screw body which concerns on 1st embodiment of this invention, (B) thru | or (D) is a figure which shows the modification. (A)乃至(C)は本発明の第一実施形態の変形例に係るねじ体の締結構造の雌ねじ体とワッシャの締結状態図である。(A) thru | or (C) are the fastening state figures of the internal thread body and washer of the fastening structure of the thread body which concern on the modification of 1st embodiment of this invention. (A)乃至(D)は、本発明の第一実施形態の変形例に係るねじ体の締結構造の雄ねじ体の正面図及び底面図である。(A) thru | or (D) are the front views and bottom views of a male screw body of the fastening structure of the screw body which concerns on the modification of 1st embodiment of this invention. 本発明の第二実施形態に係るねじ体の締結構造の締結状態図である。It is a fastening state figure of the fastening structure of the screw object concerning a second embodiment of the present invention. 本発明の第二実施形態に係るねじ体の締結構造に用いられる(A)雄ねじ体の正面図及び底面図、(B)ワッシャの底面図である。It is the front view and bottom view of (A) male screw body used for the fastening structure of the screw body which concerns on 2nd embodiment of this invention, (B) The bottom view of a washer. 本発明の第二実施形態の変形例に係るねじ体の締結構造の締結状態図である。It is a fastening state figure of the fastening structure of the screw object concerning the modification of a second embodiment of the present invention. 本発明の第二実施形態の変形例に係るねじ体の締結構造に用いられる(A)雄ねじ体の側面図及び底面図、(B)ワッシャの底面図である。It is the side view and bottom view of (A) male screw body used for the fastening structure of the screw body which concerns on the modification of 2nd embodiment of this invention, (B) The bottom view of a washer. (A)(B)共に、本発明の第二実施形態の変形例に係るねじ体の締結構造の分解図である。(A) (B) is an exploded view of the fastening structure of the screw body which concerns on the modification of 2nd embodiment of this invention. 本発明の第一実施形態の変形例に係るねじ体の締結構造の(A)締結状態図、(B)分解図である。It is (A) fastening state figure and (B) exploded view of the fastening structure of the screw body which concerns on the modification of 1st embodiment of this invention. 本発明の第二実施形態の変形例に係るねじ体の締結構造の(A)締結状態図、(B)分解図である。It is the (A) fastening state figure and (B) exploded view of the fastening structure of the screw body which concerns on the modification of 2nd embodiment of this invention. 本発明の第二実施形態の変形例に係るねじ体の締結構造の(A)締結状態図、(B)分解図である。It is the (A) fastening state figure and (B) exploded view of the fastening structure of the screw body which concerns on the modification of 2nd embodiment of this invention. 本発明の第二実施形態の変形例に係るねじ体の締結構造の(A)締結状態図、(B)分解図である。It is the (A) fastening state figure and (B) exploded view of the fastening structure of the screw body which concerns on the modification of 2nd embodiment of this invention. 本発明の第三実施形態に係るねじ体の締結構造を示す部分断面図である。It is a fragmentary sectional view which shows the fastening structure of the screw body which concerns on 3rd embodiment of this invention. 本発明の第三実施形態に係るねじ体の締結構造で用いる雌ねじ体を示す(A)断面図、(B)正面図、(C)底面図である。It is (A) sectional drawing, (B) front view, and (C) bottom view which show the internal thread body used with the fastening structure of the thread body concerning 3rd embodiment of this invention. (A)及び(B)は、本発明の実施形態に係るねじ体の締結構造で用いる雄ねじ体の変形例を示す正面図及び底面図である。(A) And (B) is the front view and bottom view which show the modification of the external thread body used with the fastening structure of the thread body which concerns on embodiment of this invention. 本発明の第四実施形態に係るねじ体の締結構造で用いる雄ねじ体の(A)平面図、(B)正面図、(C)底面図、(D)側面図である。It is (A) top view, (B) front view, (C) bottom view, (D) side view of the external thread body used with the fastening structure of the thread body concerning 4th embodiment of this invention. 同雄ねじ体の一部を拡大して示す平面図である。It is a top view which expands and shows a part of the same male screw body. 同雄ねじ体の斜視図である。It is a perspective view of the same male screw body. 同ねじ体の締結構造で用いる雌ねじ体の(A)正面図、(B)正面断面図である。It is (A) front view and (B) front sectional drawing of the internal thread body used with the fastening structure of the screw body. 同雌ねじ体の(A)平面図、(B)底面図である。It is the (A) top view and (B) bottom view of the female screw body. 同雌ねじ体の斜視図である。It is a perspective view of the female screw body. 同ねじ体の締結構造で用いるワッシャの(A)正面図、(B)正面断面図である。It is (A) front view and (B) front sectional drawing of the washer used with the fastening structure of the screw body. 同ワッシャの(A)平面図、(B)底面図である。It is the (A) top view and (B) bottom view of the washer. 同ワッシャの斜視図である。It is a perspective view of the washer. 同ねじ体の締結構造の(A)正面図、(B)正面断面図、(C)底面図である。It is the (A) front view, (B) front sectional view, and (C) bottom view of the fastening structure of the screw body. 同ねじ体の締結構造の分解正面図である。It is a disassembled front view of the fastening structure of the screw body. 同ねじ体の締結構造の(A)斜視図、(B)分解斜視図である。It is the (A) perspective view and (B) exploded perspective view of the fastening structure of the screw body. 本発明の第四実施形態の変形例に係るねじ体の締結構造で用いる雄ねじ体の(A)平面図、(B)正面図、(C)底面図、(D)側面図である。It is the (A) top view, (B) front view, (C) bottom view, (D) side view of the external thread body used with the fastening structure of the thread body concerning the modification of 4th embodiment of this invention. 同雄ねじ体の一部を拡大して示す平面図である。It is a top view which expands and shows a part of the same male screw body. 同雄ねじ体の斜視図である。It is a perspective view of the same male screw body. 同ねじ体の締結構造で用いるワッシャの(A)正面図、(B)正面断面図である。It is (A) front view and (B) front sectional drawing of the washer used with the fastening structure of the screw body. 同ワッシャの(A)平面図、(B)底面図である。It is the (A) top view and (B) bottom view of the washer. 同ワッシャの斜視図である。It is a perspective view of the washer. 同変形例に係るねじ体の締結構造の(A)正面図、(B)正面断面図、(C)底面図である。It is the (A) front view of the fastening structure of the screw body concerning the modification, (B) front sectional view, and (C) bottom view. 同変形例に係るねじ体の締結構造の分解正面図である。It is an exploded front view of the fastening structure of the screw body concerning the modification. 同変形例に係るねじ体の締結構造の(A)斜視図、(B)分解斜視図である。It is the (A) perspective view and (B) exploded perspective view of the fastening structure of the screw body concerning the modification.
 以下、本発明の実施の形態について図面を参照しながら詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
 図1には、第一実施形態に係るねじ体の締結構造が示されている。ねじ体の締結構造は、雄ねじ体10と、連携部材となる環状のワッシャ50と、被締結部材80と、雌ねじ体90を備えて構成される。 FIG. 1 shows a fastening structure of a screw body according to the first embodiment. The fastening structure of the screw body includes a male screw body 10, an annular washer 50 serving as a link member, a fastened member 80, and a female screw body 90.
 図2(A)に示すように、雄ねじ体10は、所謂ボルトであり、頭部20と軸部30を有する。頭部20の下部乃至付け根に相当する部位には、ねじ体側座部22が形成される。軸部30には、円柱状を成す所謂円筒部30aと雄ねじ部30bとが形成される。なお、ここではねじ山が形成されていない基端の柱状部分を円筒部30aと呼ぶが、基部と定義しても良い。 As shown in FIG. 2A, the male screw body 10 is a so-called bolt and has a head 20 and a shaft 30. A screw body side seat portion 22 is formed at a portion corresponding to a lower portion or a root of the head 20. The shaft portion 30 is formed with a so-called cylindrical portion 30a and a male screw portion 30b having a columnar shape. In addition, although the columnar part of the base end in which the screw thread is not formed is called the cylindrical part 30a here, you may define as a base part.
 図2(B)に示すように、軸部30には、軸方向から視て断面非円形となる雄ねじ側連携領域35が形成される。ここでは雄ねじ側連携領域35が円筒部30aと重なるように形成される。具体的に雄ねじ側連携領域35は、断面正円形の一部の円弧が、その弦に沿って省略(異形と)された形状となっており、この弦の部分が雄ねじ側当接部120となる。結果、この雄ねじ側当接部120は、軸部30の周面において、半径方向に対して直角で、且つ半径方向外側に向いた平面となる。雄ねじ側当接部120は、ねじの軸心からの距離が周方向に沿って変動し、第一雄ねじ側当接領域120Yは、雄ねじ体10の一方の周方向Xに沿って距離X1、X2が大きくなる。第二雄ねじ側当接領域120Xは、雄ねじ体10の他方の周方向Yに沿って距離Y1、Y2が大きくなる。なお、この変動量は、多少の余裕隙間を無視すれば、後述するワッシャ側当接部110と同じに設定される。或いは、この余裕隙間が、雌ねじ90によるワッシャ50の締め込みによる軸方向の圧縮によってもたらされる軸直角方向への変形によって埋まるように、設定しても好い。 As shown in FIG. 2 (B), the shaft portion 30 is formed with a male screw side cooperation region 35 having a non-circular cross section when viewed from the axial direction. Here, the male screw side cooperation region 35 is formed so as to overlap the cylindrical portion 30a. Specifically, the male screw side cooperation region 35 has a shape in which a part of a circular arc having a circular cross section is omitted along the string (an irregular shape), and the string portion is connected to the male screw side contact portion 120. Become. As a result, the male screw side contact portion 120 is a plane that is perpendicular to the radial direction and directed outward in the radial direction on the peripheral surface of the shaft portion 30. The male screw side contact portion 120 varies in distance from the screw shaft center along the circumferential direction, and the first male screw side contact region 120Y has distances X1, X2 along one circumferential direction X of the male screw body 10. Becomes larger. In the second male screw side contact region 120X, the distances Y1 and Y2 increase along the other circumferential direction Y of the male screw body 10. Note that the amount of variation is set to be the same as that of a washer-side contact portion 110 described later if a slight margin is ignored. Alternatively, the margin clearance may be set so as to be filled by deformation in the direction perpendicular to the axis caused by axial compression caused by tightening of the washer 50 by the female screw 90.
 また、雄ねじ側連携領域35の軸心からの最小半径35Yは、雄ねじ部30bの軸心からの最大半径30bXと同等以上に設定されている。従って、雄ねじ側連携領域35の軸心からの最大半径35Yは、雄ねじ部30bの軸心からの最大半径30bXより大きく設定されることが好ましい。 Further, the minimum radius 35Y from the axis of the male screw side cooperation region 35 is set to be equal to or greater than the maximum radius 30bX from the axis of the male screw portion 30b. Therefore, the maximum radius 35Y from the axis of the male screw side cooperation region 35 is preferably set to be larger than the maximum radius 30bX from the axis of the male screw portion 30b.
 図3(A)(B)に示すように、ワッシャ50の一方側の面には、第一受部60が形成される。この第一受部60は、雌ねじ体90の座部92と対向しており、両者の間には、第一係合機構Aが構成される。この第一係合機構Aは、少なくとも雌ねじ体90が、螺合する雄ねじ体10に対して緩まる方向に回転しようとすると、第一受部60と雌ねじ体90の座部92が互いに係合して、当該回転方向に対する第一受部60とねじ体側座部22との相対回転を防止する。ワッシャ50の他方側には、第二受部70が形成される。この第二受部70は、被締結部材80と対向する。 As shown in FIGS. 3A and 3B, a first receiving portion 60 is formed on one surface of the washer 50. The first receiving portion 60 faces the seat portion 92 of the female screw body 90, and a first engagement mechanism A is configured between the two. In the first engagement mechanism A, when at least the female screw body 90 tries to rotate in a loosening direction with respect to the male screw body 10 to be screwed, the first receiving portion 60 and the seat portion 92 of the female screw body 90 are engaged with each other. And the relative rotation of the 1st receiving part 60 and the screw body side seat part 22 with respect to the said rotation direction is prevented. A second receiving portion 70 is formed on the other side of the washer 50. The second receiving part 70 faces the fastened member 80.
 ワッシャ50における雄ねじ体の貫通孔52は、軸方向から視た場合に非正円形となっている。この貫通孔52は、正円形の一部の円弧がその弦に沿って省略された形状となっており、雄ねじ体10の雄ねじ側連携領域35に対して周方向に係合する(これを補助係合機構Bと定義する)。 The through hole 52 of the male screw body in the washer 50 has a non-circular shape when viewed from the axial direction. The through hole 52 has a shape in which a part of a circular arc of a regular circle is omitted along the string, and engages with the male screw side cooperation region 35 of the male screw body 10 in the circumferential direction (support this). Defined as engagement mechanism B).
 具体的に、この補助係合機構Bは、ワッシャ50の貫通孔52に形成されるワッシャ側当接部110と、雄ねじ体10の雄ねじ側連携領域35に形成される雄ねじ側当接部120を有する。既に述べたように、ワッシャ50の貫通孔52は、ねじの軸心に対して同心の部分円弧形状となっており、残部を弦のように直線状に切り落とした形状となっているので、この弦がワッシャ側当接部110となる。従って、ワッシャ50の貫通孔52の内壁は、ワッシャ側当接部110に相当する部分において平面形状となっており、ねじの軸心からの距離が周方向に沿って変動する。具体的に第一ワッシャ側当接領域110Xは、ワッシャ50の一方の周方向Xに沿って、距離XA、XBが大きくなる。第二ワッシャ側当接領域110Yは、ワッシャ50の他方の周方向Yに沿って距離YA、YBが大きくなる。なお、ワッシャ側当接部110を除いた部分は、ねじの軸心からの距離が一定となる正円形状となっている。また、貫通孔52の軸心からの最小半径52Yは、雄ねじ部30bの最大半径30bXと同じ又はそれより大きく設定される。結果、貫通孔52と雄ねじ体10の雄ねじ部30bが干渉しないで済む。 Specifically, the auxiliary engagement mechanism B includes a washer side abutting portion 110 formed in the through hole 52 of the washer 50 and a male screw side abutting portion 120 formed in the male screw side cooperation region 35 of the male screw body 10. Have. As already described, the through hole 52 of the washer 50 has a partial arc shape that is concentric with the axis of the screw, and the remaining portion is cut into a straight line like a string. The string becomes the washer side contact portion 110. Therefore, the inner wall of the through hole 52 of the washer 50 has a planar shape at a portion corresponding to the washer-side contact portion 110, and the distance from the screw axis varies along the circumferential direction. Specifically, in the first washer side contact region 110X, the distances XA and XB increase along one circumferential direction X of the washer 50. In the second washer side contact region 110Y, the distances YA and YB increase along the other circumferential direction Y of the washer 50. The portion excluding the washer-side contact portion 110 has a perfect circular shape with a constant distance from the screw shaft center. Further, the minimum radius 52Y from the axis of the through hole 52 is set to be equal to or larger than the maximum radius 30bX of the male screw portion 30b. As a result, the through hole 52 and the male screw part 30b of the male screw body 10 do not have to interfere with each other.
 従って、ワッシャ50の貫通孔52に雄ねじ体10の軸部30を挿入すると、ワッシャ側当接部110と雄ねじ側当接部120が当接し、ねじの軸心を合わせた状態のままでは、両者の周方向の相対回転が制約される。即ち、このワッシャ側当接部110と雄ねじ側当接部120が補助係合機構Bとして作用する。 Accordingly, when the shaft portion 30 of the male screw body 10 is inserted into the through hole 52 of the washer 50, both the washer side contact portion 110 and the male screw side contact portion 120 come into contact with each other, and the screw shaft centers are aligned. The relative rotation in the circumferential direction is restricted. That is, the washer side contact portion 110 and the male screw side contact portion 120 act as the auxiliary engagement mechanism B.
 更に第一係合機構Aとして、ワッシャ50の第一受部60には、ねじ体側凹凸94と係合する第一受部側凹凸64が形成される。第一受部側凹凸64は、周方向に複数連続して設けられる鋸刃形状となっている。第一受部側凹凸64の各々が延びる方向、即ち稜線が延びる方向は、ワッシャ50の半径方向に沿っている。結果、第一受部側凹凸64は、ワッシャ50の貫通穴52の中心から放射状に延びる。 Further, as the first engagement mechanism A, the first receiving portion 60 of the washer 50 is formed with a first receiving portion side unevenness 64 that engages with the screw body side unevenness 94. The 1st receiving part side unevenness | corrugation 64 becomes the saw blade shape provided in multiple numbers by the circumferential direction continuously. The direction in which each of the first receiving portion side irregularities 64 extends, that is, the direction in which the ridge line extends, is along the radial direction of the washer 50. As a result, the first receiving portion side unevenness 64 extends radially from the center of the through hole 52 of the washer 50.
 更にこの第一受部60には、半径方向に傾斜するワッシャ側テーパ面が形成される。このワッシャ側テーパ面は、中心側が雄ねじ体10の頭部20側に近づくように傾斜してすり鉢状を成している(図1参照)ので、結果として、凹の円錐形状となる。このワッシャ側テーパ面に、既述の第一受部側凹凸64が形成される。 Further, the first receiving portion 60 is formed with a washer side tapered surface inclined in the radial direction. The washer-side taper surface is inclined and shaped like a mortar so that the center side approaches the head 20 side of the male screw body 10 (see FIG. 1), resulting in a concave conical shape. The first receiving portion side irregularities 64 described above are formed on the washer side tapered surface.
 図3(C)(D)に示すように、雌ねじ体90の筒部96は、雄ねじ体10と螺合するための雌ねじ部96aが形成される。更に雌ねじ体90には、ワッシャ50の第一受部60に対向する座部92が形成される。この座部92とワッシャ50側の第一受部60は共に環状の面領域となっており、互いに当接して、締結力(軸力)を被締結部材80に伝達する役割を担う。即ち、本締結構造における軸力の殆どは、ワッシャ50を介して被締結部材80に伝達される。 As shown in FIGS. 3C and 3D, the cylindrical portion 96 of the female screw body 90 is formed with a female screw portion 96 a for screwing with the male screw body 10. Further, the female screw body 90 is formed with a seat portion 92 that faces the first receiving portion 60 of the washer 50. The seat portion 92 and the first receiving portion 60 on the washer 50 side are both annular surface regions, and abut against each other to play a role of transmitting a fastening force (axial force) to the fastened member 80. That is, most of the axial force in the fastening structure is transmitted to the fastened member 80 through the washer 50.
 図3に示すように、第一係合機構Aとして、雌ねじ体90の座部92には、ねじ体側凹凸94が形成される。ねじ体側凹凸94は、周方向に複数連続して設けられる鋸刃形状と成っている。ねじ体側凹凸94の各々が延びる方向、即ち、稜線が延びる方向は、雌ねじ体90の半径方向となっている。結果、ねじ体側凹凸94は、軸心から放射状に延びる。 As shown in FIG. 3, as the first engagement mechanism A, a screw body side unevenness 94 is formed in the seat portion 92 of the female screw body 90. The screw body side unevenness 94 has a saw blade shape that is continuously provided in the circumferential direction. The direction in which each of the threaded body side irregularities 94 extends, that is, the direction in which the ridge line extends is the radial direction of the female threaded body 90. As a result, the screw body side unevenness 94 extends radially from the axis.
 更にこのねじ体側座部92には、半径方向に傾斜するねじ体側テーパ面が形成される。このねじ体側テーパ面は、中心側がワッシャ50側に近づくように傾斜しているので、結果として、雄ねじ体10の頭部20側に凸の円錐形状となる。このねじ体側テーパ面に、既述のねじ体側凹凸94が形成される。 Further, the threaded body side seat portion 92 is formed with a threaded body side tapered surface inclined in the radial direction. Since the screw body side tapered surface is inclined so that the center side approaches the washer 50 side, as a result, a convex conical shape is formed on the head 20 side of the male screw body 10. The aforementioned threaded body side unevenness 94 is formed on the threaded body side tapered surface.
 以上の通り、第一係合機構Aとして、ねじ体側凹凸94と第一受部側凹凸64が、周方向に複数連続する鋸刃形状と成っているので、所謂ラチェット機構又はワンウエイクラッチ機構として作用する。結果、雌ねじ90の締結動作時は、ねじ体側凹凸94とワッシャ50の第一受部側凹凸64の相対移動を許容して、円滑な相対回転を実現する。一方、雌ねじ90の緩み動作時は、ねじ体側凹凸94とワッシャ50の第一受部側凹凸64の相対移動を完全に規制する。結果、締結時の作業性と、その後の緩み止めを合理的に両立出来る。 As described above, as the first engagement mechanism A, since the screw body side unevenness 94 and the first receiving portion side unevenness 64 are formed in a saw blade shape that is continuous in the circumferential direction, it acts as a so-called ratchet mechanism or one-way clutch mechanism. To do. As a result, during the fastening operation of the female screw 90, the relative movement of the screw body side unevenness 94 and the first receiving portion side unevenness 64 of the washer 50 is allowed to realize smooth relative rotation. On the other hand, during the loosening operation of the female screw 90, the relative movement of the screw body side unevenness 94 and the first receiving portion side unevenness 64 of the washer 50 is completely restricted. As a result, workability at the time of fastening and subsequent locking can be rationally achieved.
 また更に第一係合機構Aとして、ねじ体側座部92と第一受部60には、ねじ体側テーパ面とワッシャ側テーパ面が形成されるので、両者の当接面積を大きくすることが出来る。また、本締結構造による軸線方向の締結力が、テーパ面によって半径方向にも作用する。互いのテーパ面を半径方向に押し付けることで、自励的にセンタリング出来る。結果、雌ねじ体90とワッシャ50の同芯度が高められ、ねじ体側凹凸94と第一受部側凹凸64の係合精度を高めることが出来る。なお、凸側のねじ体側テーパ面の傾斜を微小に大きくし、凹側のワッシャ側テーパ面の傾斜角を微小に小さくして、角度に微小差を設けておくことも好ましい。このようにすると、締め付け圧力の増大に伴って、中心から半径方向外側に向かって、互いのテーパ面を少しずつ当接させることが出来る。 Further, as the first engagement mechanism A, the screw body side seat portion 92 and the first receiving portion 60 are formed with the screw body side taper surface and the washer side taper surface, so that the contact area between both can be increased. . Further, the fastening force in the axial direction by this fastening structure also acts in the radial direction by the tapered surface. By pressing the taper surfaces of each other in the radial direction, centering can be carried out by self-excitation. As a result, the concentricity of the female screw body 90 and the washer 50 is increased, and the engagement accuracy between the screw body side unevenness 94 and the first receiving portion side unevenness 64 can be increased. It is also preferable to slightly increase the inclination of the convex threaded body side taper surface and to slightly decrease the inclination angle of the concave washer side taper surface to provide a small difference in angle. If it does in this way, a mutual taper surface can be made to contact | abut little by little toward the radial direction outer side from the center with the increase in clamping pressure.
 また補助係合機構Bは、ワッシャ側当接部110と雄ねじ側当接部120の形状が、ねじの軸心に対して同心正円となることを回避している。換言すると、ワッシャ側当接部110と雄ねじ側当接部120の形状は、ねじの軸心からの距離が周方向に沿って変化する。この非正円形状によって、ワッシャ側当接部110と雄ねじ側当接部120が一旦当接すると、互いの軸心を合わせたままでは、それ以上の周方向の相対回転が規制される。特に、ワッシャ側当接部110と雄ねじ側当接部120が、雄ねじ体10の全周に亘って形成されておらず、周方向の部分的に形成されているため、ワッシャ50や雄ねじ体10のこれらの形状加工を、例えば簡単な面取り加工やプレス加工とすることができる。 Further, the auxiliary engagement mechanism B avoids the shapes of the washer-side contact portion 110 and the male screw-side contact portion 120 from being concentric circles with respect to the screw shaft center. In other words, the shapes of the washer-side contact portion 110 and the male screw-side contact portion 120 vary along the circumferential direction in the distance from the screw shaft center. With this non-circular shape, once the washer-side contact portion 110 and the male screw-side contact portion 120 are in contact with each other, further relative rotation in the circumferential direction is restricted as long as the axes are aligned. In particular, the washer-side contact portion 110 and the male screw-side contact portion 120 are not formed over the entire circumference of the male screw body 10, but are partially formed in the circumferential direction. Such shape processing can be, for example, simple chamfering or pressing.
 図4に示すように、雄ねじ体10に対して被締結部材80及びワッシャ50を挿入し、更に雌ねじ体90を締め付けると、まず補助係合機構Bによって雄ねじ体10とワッシャ50が周方向に係合し、更に雌ねじ体90を締め付けると、第一係合機構Aにおいて、ワッシャ50のワッシャ側テーパ面の凹内にねじ体側座部92のねじ体側テーパ面が進入し、ねじ体側凹凸94と第一受部側凹凸64が係合して図1の状態となる。第一係合機構Aにおける両者の鋸歯形状は、図5(A)に示されるように、雌ねじ体90が、締結方向Yに回転しようとすると、互いの傾斜面24Y、64Yが当接して、両者の距離を軸方向に狭めながら、相対スライドを許容する。一方、雌ねじ体90が、緩み方向Xに回転しようとすると、互いの垂直面(傾斜が強い側の面)94X、64Xが当接して、両者の相対移動を防止する。とりわけ第一係合機構Aは、雌ねじ体90を締め付けることによって、ねじ体側座部92と第一受部60の距離が縮む程、ねじ体側凹凸94と第一受部側凹凸64の噛み合いが強くなり、緩み方向X側の係合強度が高められる。ここで、ねじ体側テーパ面の傾斜角度と、ワッシャ側テーパ面の傾斜角度とを互いに異ならせること、特にワッシャ側テーパ面の軸心からの傾斜角度をねじ体側テーパ面の軸心からの傾斜角度よりも狭めに設定することで、それぞれのテーパ面に形成される鋸歯のピッチに因らず、ガタ付き無く締め付けることも可能となる。 As shown in FIG. 4, when the fastened member 80 and the washer 50 are inserted into the male screw body 10 and the female screw body 90 is further tightened, the male screw body 10 and the washer 50 are first engaged in the circumferential direction by the auxiliary engagement mechanism B. When the female screw body 90 is further tightened, in the first engagement mechanism A, the screw body side tapered surface of the screw body side seat portion 92 enters the recess of the washer side taper surface of the washer 50, and The one receiving portion side unevenness 64 is engaged to be in the state of FIG. As shown in FIG. 5 (A), both sawtooth shapes in the first engagement mechanism A are such that when the female screw body 90 tries to rotate in the fastening direction Y, the inclined surfaces 24Y and 64Y contact each other, Relative sliding is allowed while narrowing the distance between the two in the axial direction. On the other hand, when the female screw body 90 tries to rotate in the loosening direction X, the vertical surfaces (surfaces with a strong inclination) 94X and 64X come into contact with each other to prevent relative movement between the two. In particular, in the first engagement mechanism A, as the distance between the screw body side seat portion 92 and the first receiving portion 60 decreases by tightening the female screw body 90, the engagement between the screw body side unevenness 94 and the first receiving portion side unevenness 64 becomes stronger. Thus, the engagement strength on the loosening direction X side is increased. Here, the inclination angle of the screw body side taper surface and the inclination angle of the washer side taper surface are made different from each other. In particular, the inclination angle from the axis of the washer side taper surface is set to the inclination angle from the axis of the screw body side taper surface. By setting the width narrower than that, it is possible to tighten without play regardless of the pitch of the sawtooth formed on each tapered surface.
 以上の通り、第一実施形態のねじ体の締結構造によれば、ワッシャ50を介在させることによって、雌ねじ体90のねじ体側座部92とワッシャ50の第一受部60の間に第一係合機構Aを構成し、一方、ワッシャ50の貫通孔52と雄ねじ体10の雄ねじ側連携領域35の間に補助係合機構Bを構成する。結果として、雌ねじ体90又は雄ねじ体10が緩み方向に相対回転しようとすると、第一係合機構A及び補助係合機構Bの双方の周方向係合作用によって、雄ねじ体10と雌ねじ体90の相対回転が規制された状態となり、逆回転すること即ち緩むことが防止される。従って、振動等が生じても、全く緩まない締結状態を得ることが出来る。一方、雄ねじ体10と雌ねじ体90が締まり方向に相対回転する場合は、第一係合機構Aのワンウエイクラッチ構造によって、ワッシャ50と雌ねじ体90の相対回転が許容されるので、増し締めすることが自在に可能となっている。 As described above, according to the fastening structure of the screw body of the first embodiment, the first engagement is provided between the screw body side seat portion 92 of the female screw body 90 and the first receiving portion 60 of the washer 50 by interposing the washer 50. On the other hand, an auxiliary engagement mechanism B is formed between the through hole 52 of the washer 50 and the male screw side cooperation region 35 of the male screw body 10. As a result, when the female screw body 90 or the male screw body 10 attempts to rotate relative to each other in the loosening direction, the male screw body 10 and the female screw body 90 are affected by the circumferential engagement action of both the first engagement mechanism A and the auxiliary engagement mechanism B. The relative rotation is restricted, and reverse rotation, that is, loosening is prevented. Therefore, even if vibration etc. arise, the fastening state which does not loosen at all can be obtained. On the other hand, when the male screw body 10 and the female screw body 90 rotate relative to each other in the tightening direction, the one-way clutch structure of the first engagement mechanism A allows the relative rotation of the washer 50 and the female screw body 90. Is freely possible.
 なお、本第一実施形態では、第一係合機構Aとして、ねじ体側凹凸94と第一受部側凹凸64が鋸刃形状の場合を例示したが、本発明はこれに限定されない。例えば図5(B)に示されるように、互いの凹凸を山形(双方とも傾斜面)にすることも可能である。このようにすると、雌ねじ体90が緩み方向Xに回転する際、互いの傾斜面94X,64Xが相対移動しようとするが、この傾斜面に沿って、ねじ体側凹凸94と第一受部側凹凸64が離れようとする。この移動距離(離れる角度α)を、雌ねじ体90のリード角より大きく設定すれば、雌ねじ体90が緩もうとしても、それ以上にねじ体側凹凸94と第一受部側凹凸64が離れようとするので、緩むことが出来なくなる。なお、この図5(B)では、断面二等辺三角形の凹凸を例示したが、図5(C)のように、締結回転時に当接する傾斜面94Y、64Yの傾斜角よりも、緩み回転時に当接する傾斜面94X,64Xの傾斜角をなだらかにすることも好ましい。このようにすると、締結回転時に、互いに乗り越えなければならない傾斜面94Y、64Yの周方向距離Pを短くすることができるので、締結後のガタ(隙間)を少なく出来る。 In the first embodiment, the case where the screw body side unevenness 94 and the first receiving portion side unevenness 64 have a saw blade shape is illustrated as the first engagement mechanism A, but the present invention is not limited to this. For example, as shown in FIG. 5B, the unevenness of each other can be formed in a mountain shape (both are inclined surfaces). In this way, when the female screw body 90 rotates in the loosening direction X, the inclined surfaces 94X and 64X tend to move relative to each other. The screw body side unevenness 94 and the first receiving portion side unevenness are along this inclined surface. 64 tries to leave. If this moving distance (separation angle α) is set to be larger than the lead angle of the female screw body 90, the screw body side unevenness 94 and the first receiving part side unevenness 64 are more likely to be separated even if the female screw body 90 tries to loosen. You will not be able to relax. In FIG. 5 (B), an isosceles triangle-shaped concavity and convexity are shown as an example. However, as shown in FIG. 5 (C), the inclination angle of the inclined surfaces 94Y and 64Y that abut at the time of fastening rotation is larger than that at the time of loose rotation. It is also preferable to make the inclination angles of the inclined surfaces 94X and 64X in contact with each other gentle. In this way, since the circumferential distance P between the inclined surfaces 94Y and 64Y that must be overcome during fastening rotation can be shortened, play (gap) after fastening can be reduced.
 また、図5(A)~(C)の応用として、図5(D)に示されるように、峯と谷を湾曲させた波型の凹凸も好ましい。締結時に滑らかな操作性を得ることができる。更に、本第一実施形態では、半径方向に延びる凹凸を例示したが、図6(A)に示されるように、渦巻き状(スパイラル状)の溝又は山(凹凸)を形成することも好ましい。また図6(B)のように、直線状に延びる溝又は山(凹凸)であっても、ねじの半径方向に対して周方向位相が変化するように傾斜配置することもできる。また、図6(C)に示されるように、微細凹凸を、ねじの周方向且つ半径方向の双方(平面状)に複数形成した、いわゆるエンボス形状を採用することも好ましい。 Also, as an application of FIGS. 5 (A) to (C), as shown in FIG. 5 (D), corrugated irregularities with curved ridges and valleys are also preferable. Smooth operability can be obtained during fastening. Furthermore, in the first embodiment, the unevenness extending in the radial direction is exemplified, but it is also preferable to form a spiral (spiral) groove or mountain (unevenness) as shown in FIG. In addition, as shown in FIG. 6B, even a groove or mountain (unevenness) extending linearly can be inclined so that the circumferential phase changes with respect to the radial direction of the screw. As shown in FIG. 6C, it is also preferable to adopt a so-called embossed shape in which a plurality of fine irregularities are formed both in the circumferential direction and the radial direction (planar shape) of the screw.
 更に本第一実施形態のように、ねじ体側凹凸94と第一受部側凹凸64の凹凸形状を必ずしも一致(相似)させる必要はない。例えば、図5及び図6の各種形状から異なるものを互いに選択して組み合わせることも出来る。 Further, as in the first embodiment, it is not always necessary to make the uneven shapes of the screw body side unevenness 94 and the first receiving portion side unevenness 64 coincide (similar). For example, different shapes from the various shapes in FIGS. 5 and 6 can be selected and combined with each other.
 本第一実施形態では、ねじ体側テーパ面を凸形状、ワッシャ側テーパ面を凹形状にする場合を例示したが、本発明はこれに限定されない。例えば、ねじ体側テーパ面を凹形状、ワッシャ側テーパ面を凸形状にすることができる。一方で両者をねじ軸に対して垂直な非テーパ面にすることもできる。また例えばワッシャ50の弾性変形を有効活用すれば、双方のテーパ面の傾斜角を一致させる必要はない。勿論、雌ねじ体90又はワッシャ50の一方のみにテーパ面を形成しても良い。更には、双方のテーパ面を凸形状にしたり、凹形状にしたりすることで、ワッシャの弾性変形を活用して両者を密着させることが出来る。また、ワッシャ50の弾性を得る為に、ワッシャ50の基本的な形状を螺旋状として成る所謂スプリングワッシャ状や皿バネ状としても好い。 In the first embodiment, the case where the threaded body side tapered surface is convex and the washer side tapered surface is concave is illustrated, but the present invention is not limited to this. For example, the threaded body side taper surface can be concave and the washer side taper surface can be convex. On the other hand, both can be non-tapered surfaces perpendicular to the screw axis. For example, if the elastic deformation of the washer 50 is effectively used, it is not necessary to make the inclination angles of both tapered surfaces coincide. Of course, a tapered surface may be formed on only one of the female screw body 90 and the washer 50. Furthermore, by making both the tapered surfaces convex or concave, the elastic deformation of the washer can be utilized to bring them into close contact. Further, in order to obtain the elasticity of the washer 50, the basic shape of the washer 50 is preferably a so-called spring washer shape or a disc spring shape in which a spiral shape is used.
 また、本第一実施形態の雄ねじ体10は、円筒部30aと雄ねじ部30bの境界に溝(くびれ)を設ける場合を例示したが、本発明はこれに限定されない。円筒部30aと雄ねじ部30bが溝を介さずに連続している構造も好ましく、雄ねじ体10の強度を高めることが可能となる。 Moreover, although the male screw body 10 of the first embodiment has exemplified the case where a groove (constriction) is provided at the boundary between the cylindrical portion 30a and the male screw portion 30b, the present invention is not limited to this. A structure in which the cylindrical portion 30a and the male screw portion 30b are continuous without a groove is also preferable, and the strength of the male screw body 10 can be increased.
 更に、第一実施形態の補助係合機構Bの応用として、図7(A)に示すように、雄ねじ体10の雄ねじ側連携領域35として、円筒部30aの周囲の複数個所(ここでは2カ所)に、雄ねじ側当接部120Aを形成しても良い。図7(B)に示すように、雄ねじ体10の雄ねじ側連携領域35として、円筒部30aの周囲から半径方向外側に向かってに凸となるような突起120Bを形成しても良い。図7(C)に示すように、雄ねじ体10の雄ねじ側連携領域35として、円筒部30aを断面多角形120C(ここでは六角形)にしても良い。更に図7(D)に示すように、雄ねじ体10の雄ねじ側連携領域35として、円筒部30aを断面楕円形状120Dにしてもよい。いずれも「断面非正円」形状となる。この際、特に図示しないが、ワッシャ50の貫通孔52も、これらに対応した相似形にすることが好ましいが、両者が周方向に係合できる条件であれば、両者を相似形状にする必要はない。 Furthermore, as an application of the auxiliary engagement mechanism B of the first embodiment, as shown in FIG. 7A, as the male screw side cooperation region 35 of the male screw body 10, a plurality of locations (here, two locations) around the cylindrical portion 30a. ), The male screw side contact portion 120A may be formed. As shown in FIG. 7B, a protrusion 120B that protrudes radially outward from the periphery of the cylindrical portion 30a may be formed as the male screw side cooperation region 35 of the male screw body 10. As shown in FIG. 7C, the cylindrical portion 30a may be a polygonal section 120C (here, a hexagon) as the male screw side cooperation region 35 of the male screw body 10. Further, as shown in FIG. 7D, the cylindrical portion 30a may have an elliptical cross section 120D as the male screw side cooperation region 35 of the male screw body 10. All of them have a “non-circular cross section” shape. At this time, although not particularly illustrated, it is preferable that the through hole 52 of the washer 50 has a similar shape corresponding to these, but it is necessary to make both the shapes similar if they can be engaged in the circumferential direction. Absent.
 次に図8及び図9を参照して、第二実施形態に係るねじ体の締結構造を説明する。なお、第一実施形態と同一又は類似する構造又は部材については説明を省略する。 Next, with reference to FIG.8 and FIG.9, the fastening structure of the screw body which concerns on 2nd embodiment is demonstrated. In addition, description is abbreviate | omitted about the structure or member similar or similar to 1st embodiment.
 図9(A)に示すように、雄ねじ体10には、雄ねじ部30bと重なるように雄ねじ側連携領域35が形成される。この雄ねじ側連携領域35は、軸方向から視た場合に、ねじ山の頂点に沿って形成される断面正円形の一部の円弧が、その弦に沿って省略(又はカット)されたような形状となっており、この弦の部分が雄ねじ側当接部120となる。即ち、ねじ山の一部が軸方向に連なるよう省略されることで、半径方向に対して直角且つ半径方向外側に向いた仮想平面Pが構成され、この仮想平面Pが雄ねじ側当接部120となる。従って、雄ねじ側連携領域35の最小半径35Yは、雄ねじ部30bの最大半径30bXより小さく設定される。 As shown in FIG. 9A, the male screw body 10 is formed with a male screw side cooperation region 35 so as to overlap with the male screw portion 30b. When viewed from the axial direction, the male screw side cooperation region 35 is such that a part of a circular arc of a cross section formed along the apex of the thread is omitted (or cut) along the chord. It has a shape, and this string portion becomes the male screw side contact portion 120. That is, by omitting a part of the screw thread so as to be continuous in the axial direction, a virtual plane P that is perpendicular to the radial direction and directed outward in the radial direction is configured, and this virtual plane P is the male screw side contact portion 120. It becomes. Therefore, the minimum radius 35Y of the male screw side cooperation region 35 is set to be smaller than the maximum radius 30bX of the male screw portion 30b.
 更に本実施形態では、雄ねじ側当接部120の軸方向の周囲に、ねじ山の谷底30Cが残存している。結果、雌ねじ体90と螺合する機能は残存していることになる。具体的には、雄ねじ側当接部120において、ねじ山の高さの3分の2を上限として省略することが好ましく、より好ましくは、ねじ山の高さの2分の1を上限として省略する。従って、雄ねじ側連携領域35の最小半径(最小距離)35Yは、雄ねじ部30bの軸心からの最小半径(谷底半径)30bYより大きくなる。本実施形態では、周方向の120度の位相差となる三か所に、雄ねじ側当接部120が形成される。 Furthermore, in the present embodiment, the thread thread valley bottom 30 </ b> C remains around the axial direction of the male screw contact portion 120. As a result, the function of screwing into the female screw body 90 remains. Specifically, in the male thread side contact portion 120, it is preferable to omit the upper limit of two-thirds of the thread height, and more preferably, omit the upper limit of one-half of the thread height. To do. Accordingly, the minimum radius (minimum distance) 35Y of the male screw side cooperation region 35 is larger than the minimum radius (valley bottom radius) 30bY from the axis of the male screw portion 30b. In the present embodiment, the male screw side contact portions 120 are formed at three locations that form a phase difference of 120 degrees in the circumferential direction.
 図9(B)に示すように、ワッシャ50における雄ねじ体を挿通させ得る貫通孔52は、軸方向から視た場合に非正円形となっている。貫通孔52は、ねじの軸心に対して同心の部分円弧形状となっており、残部を弦のように直線状に切り落としたような形状となっているので、この弦がワッシャ側当接部110となる。なお、本実施形態では、周方向の120度の位相差となる三か所にワッシャ側当接部110が形成される。ワッシャ側当接部110が、雄ねじ側連携領域35の雄ねじ側当接部120と当接することで、互いに周方向に係合して補助係合機構Bを構成する。 As shown in FIG. 9B, the through hole 52 through which the male screw body of the washer 50 can be inserted has a non-circular shape when viewed from the axial direction. The through hole 52 has a partial arc shape that is concentric with the axial center of the screw and has a shape in which the remaining portion is linearly cut off like a string. 110. In the present embodiment, the washer-side abutting portions 110 are formed in three places that have a phase difference of 120 degrees in the circumferential direction. The washer side abutting portion 110 abuts on the male screw side abutting portion 120 of the male screw side cooperation region 35 to engage with each other in the circumferential direction to constitute the auxiliary engagement mechanism B.
 以上の通り、第二実施形態のねじ体の締結構造によれば、図8で示すように、ワッシャ50の貫通孔52と、雄ねじ体10の雄ねじ部30bに重畳的に形成される雄ねじ側連携領域35の間に補助係合機構Bを構成できる。従って、雄ねじ側連携領域35が存在する範囲内であれば、ワッシャ50の位置を自在に変更できるので、被締結部材80の軸方向寸法の変動に対する許容範囲を大きくすることができる、更にここでは、雄ねじ側連携領域35の雄ねじ側当接部120において、ねじ山の谷底を可能な限り残存させているので、雌ねじ体90との締結力の低下は、殆ど生じないようになっている。 As described above, according to the fastening structure of the screw body of the second embodiment, as shown in FIG. 8, the male screw side cooperation formed to overlap the through hole 52 of the washer 50 and the male screw part 30 b of the male screw body 10. An auxiliary engagement mechanism B can be configured between the regions 35. Accordingly, the position of the washer 50 can be freely changed within the range in which the male screw side cooperation region 35 exists, so that the allowable range for the variation in the axial dimension of the fastened member 80 can be increased. In the male screw side contact portion 120 of the male screw side cooperation area 35, the bottom of the thread is left as much as possible, so that a decrease in the fastening force with the female screw body 90 hardly occurs.
 なお、本第二実施形態の雄ねじ体10は、円筒部30aに雄ねじ側連携領域35を設けない場合を例示したが、円筒部30aの断面形状を、雄ねじ側連携領域35と略一致させることによって、この雄ねじ側連携領域35を円筒部30aまで拡張することも可能である。勿論、円筒部30a自体を無くすことも可能である。 In addition, although the external thread body 10 of this 2nd embodiment illustrated the case where the external thread side cooperation area | region 35 was not provided in the cylindrical part 30a, by making the cross-sectional shape of the cylindrical part 30a substantially correspond with the external thread side cooperation area 35, The male screw side cooperation region 35 can be extended to the cylindrical portion 30a. Of course, the cylindrical portion 30a itself can be eliminated.
 図10に第二実施形態の変形例を示す。ここでは、ワッシャ50において被締結部材80と対向する第二受部70を、雄ねじ体10の頭部20側に向かって凸となるテーパ面とし、全体として「ばねワッシャ」となっている。結果、ワッシャ50が弾性変形できる。例えば、雌ねじ体90の凸側のねじ体側テーパ面の傾斜を小さくし(又は平面状態とし)、ワッシャ90のワッシャ側テーパ面の傾斜角を大きくして、角度差を設けることにより、締め付け圧力の増大に伴って、ワッシャ50を弾性変形させることができる。ワッシャ50を弾性変形させると、その応力によって貫通孔が小さくなるので、ワッシャ側当接部を雄ねじ側当接部に押し付けることができ、補助係合機構Bを強く係合させることができる。 FIG. 10 shows a modification of the second embodiment. Here, the second receiving portion 70 facing the fastened member 80 in the washer 50 is a tapered surface that protrudes toward the head 20 side of the male screw body 10 and is a “spring washer” as a whole. As a result, the washer 50 can be elastically deformed. For example, the tightening pressure can be reduced by reducing the slope of the convex thread body side taper surface of the female thread body 90 (or making it flat), and increasing the angle of inclination of the washer side taper surface of the washer 90 to provide an angle difference. With the increase, the washer 50 can be elastically deformed. When the washer 50 is elastically deformed, the through-hole becomes small due to the stress, so that the washer-side contact portion can be pressed against the male screw-side contact portion, and the auxiliary engagement mechanism B can be strongly engaged.
 図11に第二実施形態の他の変形例を示す。図11(A)に示すように、雄ねじ部30bと重畳形成される雄ねじ側連携領域35において、軸方向から視た場合に、ねじ山の頂点が凹状に省略された雄ねじ側当接部120が形成される。より詳しくは、雄ねじ側当接部120はねじ山の頂点がV字形状に凹んで構成されており、周方向に十二か所、等間隔で形成される。なお、雄ねじ側当接部120の軸心からの最小距離(凹みの底部)35Yは、雄ねじ部30bの最大半径30bXより小さく、且つ、雄ねじ部30bの最小半径(谷底半径)30bYより大きく設定される。 FIG. 11 shows another modification of the second embodiment. As shown in FIG. 11A, in the male screw side cooperation region 35 formed to overlap with the male screw part 30b, the male screw side contact part 120 in which the top of the screw thread is omitted in a concave shape when viewed from the axial direction. It is formed. More specifically, the male screw side contact portion 120 is configured such that the top of the screw thread is recessed in a V shape, and is formed at twelve locations in the circumferential direction at equal intervals. In addition, the minimum distance (dent bottom) 35Y from the axial center of the male screw side contact portion 120 is set to be smaller than the maximum radius 30bX of the male screw portion 30b and larger than the minimum radius (valley bottom radius) 30bY of the male screw portion 30b. The
 従って、図11(B)に示すように、雄ねじ体10に組み付けられるワッシャ50の貫通孔52も、雄ねじ側連携領域35と相似形となるように、半径方向内側に凸状となるワッシャ側当接部110が周方向に十二か所、等間隔で形成される。結果、ワッシャ50と雄ねじ体10を周方向に係合させることができる。 Therefore, as shown in FIG. 11 (B), the through hole 52 of the washer 50 assembled to the male screw body 10 also has a washer side contact that is convex inward in the radial direction so as to be similar to the male screw side cooperation region 35. The contact portions 110 are formed at equal intervals in twelve places in the circumferential direction. As a result, the washer 50 and the male screw body 10 can be engaged in the circumferential direction.
 なお、第二実施形態では、雄ねじ部30bに形成される雄ねじ側連携領域35において、雄ねじ側当接部120の軸心からの最小距離35Yが、雄ねじ部30bの最小半径(谷底半径)30bYより大きく設定される場合を例示しているが、本発明はこれに限定されない。例えば図12(A)に示すように、雄ねじ部30bにおいて、ねじ山の谷底部よりも深い軸方向溝を形成し、これを雄ねじ側当接部120とすることもできる。結果、雄ねじ側当接部120の軸心からの最小距離35Yは、雄ねじ部30bの最小半径(谷底半径)より小さくなる。この場合は、雄ねじ部30bのねじ山が、谷底を含めて部分的に省略される結果となる。ワッシャ50の貫通孔52にも、半径方向内向きに凸となるワッシャ側当接部110を形成し、その軸心からの最小距離を雄ねじ部30bの最小半径(谷底半径、すなわち谷の径)より小さくする。結果、ワッシャ側当接部110と雄ねじ側当接部120の周方向の係合寸法を大きくすることが可能となる。 In the second embodiment, in the male screw side cooperation region 35 formed in the male screw part 30b, the minimum distance 35Y from the axis of the male screw side contact part 120 is smaller than the minimum radius (valley bottom radius) 30bY of the male screw part 30b. Although the case where it is set large is illustrated, the present invention is not limited to this. For example, as shown in FIG. 12A, in the male screw portion 30b, an axial groove deeper than the bottom of the thread can be formed, and this can be used as the male screw contact portion 120. As a result, the minimum distance 35Y from the axis of the male screw side contact portion 120 is smaller than the minimum radius (valley bottom radius) of the male screw portion 30b. In this case, the screw thread of the male screw part 30b is partially omitted including the valley bottom. A washer-side contact portion 110 that protrudes radially inward is also formed in the through hole 52 of the washer 50, and the minimum distance from the axial center is the minimum radius of the male screw portion 30b (valley bottom radius, that is, the diameter of the valley). Make it smaller. As a result, it is possible to increase the engagement dimension in the circumferential direction between the washer-side contact portion 110 and the male screw-side contact portion 120.
 また、第一及び第二実施形態では、ワッシャ50と雌ねじ体90に傾斜面(テーパ面)を形成して、両者を当接させる場合を例示したが、本発明はこれに限定されず、例えば図12(B)に示すように、ワッシャ50と雌ねじ体90の双方に円筒面を形成し、ワッシャ50の円筒面に第一受部側凹凸64を形成し、雌ねじ体90の円筒面にねじ体側凹凸94を形成することで、互いに周方向に係合させても良い。 In the first and second embodiments, the case where the inclined surface (tapered surface) is formed on the washer 50 and the female screw body 90 and the both are brought into contact with each other is illustrated. However, the present invention is not limited to this. As shown in FIG. 12B, a cylindrical surface is formed on both the washer 50 and the female screw body 90, a first receiving portion side unevenness 64 is formed on the cylindrical surface of the washer 50, and a screw is formed on the cylindrical surface of the female screw body 90. By forming the body side irregularities 94, they may be engaged with each other in the circumferential direction.
 更に第一及び第二実施形態では、雄ねじ体90が頭部20を有する場合を例示しているが、本発明はこれに限定されない。例えば第一実施形態の応用としての図13、第二実施形態の応用としての図14にそれぞれ示すように、頭部20を省略して、そこに雄ねじ部30bを形成しておき、両側から一対のワッシャ50、50及び雌ねじ体90、90を挿入して、被締結体80を挟み込むように締結することも可能である。この場合であっても、両側に配置される雄ねじ体90、90が、ワッシャ50、50の存在によって、雄ねじ体10に対して緩み方向に相対回転することが防止される。 Furthermore, in the first and second embodiments, the case where the male screw body 90 has the head 20 is illustrated, but the present invention is not limited to this. For example, as shown in FIG. 13 as an application of the first embodiment and FIG. 14 as an application of the second embodiment, the head 20 is omitted, and a male screw portion 30b is formed therein, and a pair is formed from both sides. It is also possible to insert the washers 50, 50 and the female screw bodies 90, 90, and fasten them so as to sandwich the fastened body 80. Even in this case, the male screw bodies 90, 90 arranged on both sides are prevented from rotating relative to the male screw body 10 in the loosening direction due to the presence of the washers 50, 50.
 なお、この図13及び図14の思想は、一対の雄ねじ体90、90を任意の場所で固定する手法に応用できる。具体的には、一対のワッシャ50、50の間に被締結部材80を介在させることなく、一対のワッシャ50、50及び雌ねじ体90、90を締め付けるようにすれば、これらを任意の場所で固定できることになる。更に応用として、例えば図15に示すように、ワッシャ50の第一受部60に形成される第一係合機構Aに加えて、第二受部70にも雌ねじ体90との第二係合機構Cを設けるようにすることが好ましい。この結果、一つのワッシャ50を一対の雌ねじ体90、90で挟み込むことで、一対の雌ねじ体90、90を雄ねじ体10に対して任意の場所で固定することができる。 13 and 14 can be applied to a method of fixing the pair of male screw bodies 90, 90 at an arbitrary place. Specifically, if the pair of washers 50 and 50 and the female screw bodies 90 and 90 are tightened without interposing the fastened member 80 between the pair of washers 50 and 50, they are fixed at an arbitrary place. It will be possible. Further, as an application, for example, as shown in FIG. 15, in addition to the first engagement mechanism A formed in the first receiving portion 60 of the washer 50, the second receiving portion 70 also has a second engagement with the female screw body 90. It is preferable to provide the mechanism C. As a result, by sandwiching one washer 50 between the pair of female screw bodies 90, 90, the pair of female screw bodies 90, 90 can be fixed to the male screw body 10 at an arbitrary location.
 更に上記第一及び第二実施形態では、ワッシャ50の第一受部60の平面又は周面と、雌ねじ体90の座部92を当接させて周方向に係合させる場合を例示したが、本発明はこれに限定されない。例えば、図15のねじ体の締結構造の変形例となる図16の構造のように、ワッシャ50において、雌ねじ体90の多角形周面、または座部92と反対側の平面まで回り込むようなアーム58を形成し、このアーム58と雄ねじ体90を周方向に係合させて第二係合機構Cを構成することも好ましい。 Further, in the first and second embodiments, the case where the flat surface or the peripheral surface of the first receiving portion 60 of the washer 50 and the seat portion 92 of the female screw body 90 are brought into contact with each other in the circumferential direction is illustrated. The present invention is not limited to this. For example, like the structure of FIG. 16 which is a modification of the fastening structure of the screw body of FIG. 15, the arm that wraps around the polygonal circumferential surface of the female screw body 90 or the plane opposite to the seat portion 92 in the washer 50. It is also preferable to form the second engagement mechanism C by forming 58 and engaging the arm 58 and the male screw body 90 in the circumferential direction.
 次に、図17及び図18を参照して第三実施形態のねじ体の締結構造を説明する。なお、この第三実施形態は、第二実施形態の図11で示したねじ体の締結構造の応用となっており、これらと同一又は類似する部材については説明を省略する。このねじ体の締結構造は、ワッシャ(連携部材)50の機能を雌ねじ体90に一体的に設けることで、独立したワッシャ(連携部材)50を省略可能にすることを特徴としている。 Next, the screw body fastening structure of the third embodiment will be described with reference to FIGS. 17 and 18. Note that this third embodiment is an application of the fastening structure of the screw body shown in FIG. 11 of the second embodiment, and description of members that are the same as or similar to these is omitted. The fastening structure of the screw body is characterized in that the function of the washer (cooperating member) 50 is provided integrally with the female screw body 90 so that the independent washer (cooperating member) 50 can be omitted.
 図18に示すように、雌ねじ体90は、雄ねじ部30bと螺合する雌ねじ部91bを有する筒部91において、軸方向から視て断面非正円形となる雌ねじ側連携領域91aが形成される。この雌ねじ体連携領域91aは、雌ねじ体90の座部92の反対側に軸方向にリング状に飛び出して設けられているが、座部92側に設けても良く、また雄ねじ部30bと重畳するように形成しても良い。 As shown in FIG. 18, in the female screw body 90, a female screw side cooperation region 91 a having a non-circular cross section when viewed from the axial direction is formed in a cylindrical portion 91 having a female screw portion 91 b that is screwed with the male screw portion 30 b. This female screw body cooperation region 91a is provided on the opposite side of the female screw body 90 from the seat portion 92 so as to protrude in a ring shape in the axial direction, but may be provided on the seat portion 92 side and overlaps with the male screw portion 30b. You may form as follows.
 雌ねじ側連携領域91aは、筒部91の内周面に、半径方向内側に凸状となる雌ねじ側当接部98が、周方向に十二か所、等間隔で形成される。結果、雌ねじ側当接部98は、雄ねじ体10の雄ねじ部30bに凹んで形成される雄ねじ側当接部120と周方向に係合させることができる。既に述べたように、雌ねじ側当接部91aは、雌ねじ体90の座部92の反対側に軸方向に突出して肉薄に設けられており、半径方向外側に弾性変形できるようにしている。従って、雄ねじ体10と雌ねじ体90を所望の力で相対回転させることで、雌ねじ側当接部91aが外側に弾性変形して、雄ねじ側当接部120との周方向の係合を解除することができる。従って、図17に示すように、雄ねじ体10と雌ねじ体90を所望の力で締まる方向に付勢すれば、雄ねじ側当接部120と雌ねじ側当接部91aが係合と解除を繰り返しながら、相対回転を許容できるので、雌ねじ体90を雄ねじ部の途中の任意の場所で固定できる。より望ましくは、雄ねじ側当接部120と雌ねじ側当接部98の少なくとも一方の形状を鋸刃形状にすることで、締め付け方向の回転は許容し、緩み方向の回転は規制する所謂ラチェット機構として作用させる。 In the female screw side cooperation region 91a, female screw side contact portions 98 convex inward in the radial direction are formed on the inner peripheral surface of the cylindrical portion 91 at twelve locations in the circumferential direction at equal intervals. As a result, the female screw side contact portion 98 can be engaged in the circumferential direction with the male screw side contact portion 120 formed to be recessed in the male screw portion 30 b of the male screw body 10. As already described, the female screw side abutting portion 91a is provided on the opposite side of the seat portion 92 of the female screw body 90 in the axial direction so as to be thin and can be elastically deformed radially outward. Accordingly, by relatively rotating the male screw body 10 and the female screw body 90 with a desired force, the female screw side contact portion 91a is elastically deformed outward and the circumferential engagement with the male screw side contact portion 120 is released. be able to. Therefore, as shown in FIG. 17, if the male screw body 10 and the female screw body 90 are urged in a direction to be tightened with a desired force, the male screw side contact portion 120 and the female screw side contact portion 91a are repeatedly engaged and released. Since the relative rotation can be allowed, the female screw body 90 can be fixed at an arbitrary position in the middle of the male screw portion. More preferably, as a so-called ratchet mechanism in which at least one of the male screw side contact portion 120 and the female screw side contact portion 98 has a saw blade shape, rotation in the tightening direction is allowed and rotation in the loosening direction is restricted. Make it work.
 以上の第一乃至第三実施形態では、雄ねじ側連携領域35の雄ねじ側当接部120が、軸方向に直線的に伸びる場合を主に例示したが、本発明はこれに限定されない。例えば図19(A)及び(B)に示すように、雄ねじ側当接部120を、軸方向に対して螺旋状に傾斜して形成することも好ましい。この際、雄ねじ側当接部120の螺旋方向は、雄ねじ部のねじ山の螺旋方向と同じであり、且つ、そのリードは、雄ねじ部のリードより大きく設定することが望ましい。結果、雌ねじ体が緩み方向に回転する際に、ワッシャが雌ねじ体と連れ回りすると、リードの相違によってワッシャが雌ねじ体に押し付けられるので、第一係合機構Aが一層強固に係合して緩みを防止できる。 In the first to third embodiments described above, the case where the male screw side contact portion 120 of the male screw side cooperation region 35 extends linearly in the axial direction is mainly exemplified, but the present invention is not limited to this. For example, as shown in FIGS. 19A and 19B, it is also preferable that the male screw side contact portion 120 is formed so as to be spirally inclined with respect to the axial direction. At this time, the spiral direction of the male screw side contact portion 120 is the same as the spiral direction of the thread of the male screw portion, and the lead is preferably set larger than the lead of the male screw portion. As a result, when the female screw body rotates in the loosening direction, if the washer is rotated with the female screw body, the washer is pressed against the female screw body due to the difference in lead, so that the first engagement mechanism A is more firmly engaged and loosened. Can be prevented.
 また、上記実施形態では、主として、連携部材(ワッシャ)のワッシャ側当接部が周方向内側に凹状となる場合を例示しているが、周方向内側に凸状となっていてもよい。 Moreover, although the case where the washer side contact part of a cooperation member (washer) becomes concave shape in the circumferential direction inside is mainly illustrated in the said embodiment, it may be convex in the circumferential direction inner side.
 次に、第四実施形態となるねじ体の締結構造を説明する。なお、第四実施形態は、第二実施形態の変形例となるので、第二実施形態と同一又は類似する構造又は部材については説明を省略する。 Next, the screw body fastening structure according to the fourth embodiment will be described. In addition, since 4th embodiment becomes a modification of 2nd embodiment, description is abbreviate | omitted about the structure or member similar or similar to 2nd embodiment.
 図20(A)及び(B)に示すように、雄ねじ体10には、雄ねじ部30bと重なるように雄ねじ側連携領域35が形成される。この雄ねじ側連携領域35は、軸方向から視た場合に、ねじ山の頂点に沿って形成される断面正円形の一部が凹状に省略された雄ねじ側当接部120を有する。雄ねじ側当接部120は、ねじ山の頂点がV字形状に凹んで構成されており、この凹部が、周方向に等間隔で48か所形成される。即ち、複数の雄ねじ側当接部120が、周方向の7.5°の位相ピッチで配置される。なお、雄ねじ側当接部120の軸心からの最小距離(凹みの底部)35Yは、雄ねじ部30bの最大半径30bXより小さく、且つ、雄ねじ部30bの最小半径(谷底半径)30bYより大きく設定される。具体的に図21に拡大して示すように、ねじ山の高さをHとした場合、雄ねじ側当接部120の凹みの半径方向高さS(即ち、雄ねじ部30bのねじ山の頂から半径方向内側に向かう凹みの省略量)は、ねじ山の高さHの4分の3を上限として省略することが好ましく、より好ましくは、ねじ山の高さHの3分の2を上限として省略し、更に望ましくは、ねじ山の高さHの2分の1を上限として省略する。ここでは、ねじ山の高さHの2分の1に設定される。このようにすることで、雄ねじ側当接部120の軸方向の周囲に、ねじ山の一部及び谷底30Cを全周に亘って残存させることができる。また、雄ねじ側当接部120の凹みのV字形状の開き角度Kは、45°を上限とすることが好ましく、より好ましくは60°を上限とし、ここでは60°に設定される。 20A and 20B, the male screw body 10 is formed with a male screw side cooperation region 35 so as to overlap the male screw portion 30b. When viewed from the axial direction, the male screw side cooperation region 35 has a male screw side contact portion 120 in which a part of a regular circular shape formed along the apex of the screw thread is omitted in a concave shape. The male screw side contact portion 120 is configured such that the top of the screw thread is recessed in a V shape, and the recess is formed at 48 locations at equal intervals in the circumferential direction. That is, the plurality of male screw side contact portions 120 are arranged with a phase pitch of 7.5 ° in the circumferential direction. In addition, the minimum distance (dent bottom) 35Y from the axial center of the male screw side contact portion 120 is set to be smaller than the maximum radius 30bX of the male screw portion 30b and larger than the minimum radius (valley bottom radius) 30bY of the male screw portion 30b. The Specifically, as shown in an enlarged view in FIG. 21, when the height of the screw thread is H, the radial height S of the recess of the male screw side contact part 120 (that is, from the top of the screw thread of the male screw part 30b). The amount of omission of the dent inward in the radial direction) is preferably omitted with the upper limit being three-quarters of the thread height H, and more preferably with two-thirds of the thread height H being the upper limit. Omitted, and more preferably, the upper limit is one half of the thread height H. Here, it is set to one half of the height H of the thread. By doing in this way, a part of screw thread and valley bottom 30C can be left over the perimeter of the circumference of the male screw side contact part 120 in the axial direction. Further, the opening angle K of the V-shaped recess of the male screw side contact portion 120 is preferably 45 ° as an upper limit, more preferably 60 ° as an upper limit, and is set to 60 ° here.
 図26乃至図28に示すように、雄ねじ体10に組み付けられるワッシャ50の貫通孔52は、雄ねじ側連携領域35と相似形となる。具体的には、半径方向内側に凸状となるワッシャ側当接部110が周方向に等間隔で48か所に形成される。このワッシャ型当接部110は、軸方向に延びる峰となることから剛性が高い。 As shown in FIGS. 26 to 28, the through hole 52 of the washer 50 assembled to the male screw body 10 has a similar shape to the male screw side cooperation region 35. Specifically, washer side contact portions 110 that are convex inward in the radial direction are formed at 48 locations at equal intervals in the circumferential direction. The washer-type contact portion 110 has a high rigidity because it is a peak extending in the axial direction.
 図29に示すように、ワッシャ側当接部110の軸方向寸法Jは、雄ねじ体10の雄ねじ部30bのピッチFの同等以上に設定され、より好ましくは2.0F以上、更に望ましくは3.0F以上に設定される。本実施形態では、J=3.0Fに設定されている。 As shown in FIG. 29, the axial dimension J of the washer-side contact portion 110 is set to be equal to or greater than the pitch F of the male screw portion 30b of the male screw body 10, more preferably 2.0F or more, and even more preferably 3. Set to 0F or higher. In the present embodiment, J = 3.0F is set.
 このようにすると、ワッシャ型当接部110と雄ねじ側当接部120が、少なくとも全周に亘って係合することが可能となるので、周方向の係合強度を高めることが可能となる。特に、ワッシャ型当接部110と雄ねじ側当接部120の間で、複数ピッチ(2.0F以上)の係合を確保することにより、より強固な周方向の係合を実現できる。 In this way, the washer-type contact portion 110 and the male screw side contact portion 120 can be engaged at least over the entire circumference, so that the circumferential engagement strength can be increased. In particular, by securing engagement at a plurality of pitches (2.0 F or more) between the washer-type contact portion 110 and the male screw-side contact portion 120, stronger circumferential engagement can be realized.
 図26に戻って、ワッシャ50の第一受部60には、半径方向に傾斜するワッシャ側テーパ面が形成される。このワッシャ側テーパ面は、中心側が雄ねじ体10の先端側(雌ねじ体90側)に近づくように傾斜して凸の円錐形状となる。このワッシャ側テーパ面に、第一受部側凹凸64が形成される。 Referring back to FIG. 26, the first receiving portion 60 of the washer 50 is formed with a washer-side tapered surface that is inclined in the radial direction. The washer-side tapered surface is inclined so that the center side approaches the distal end side (the female screw body 90 side) of the male screw body 10 and has a convex conical shape. On the washer side taper surface, the first receiving portion side unevenness 64 is formed.
 図23乃至図25に示すように、雌ねじ体90には、ワッシャ50の第一受部60に対向する座部92が形成される。雌ねじ体90の座部92には、ねじ体側凹凸94が形成される。このねじ体側座部92には、半径方向に傾斜するねじ体側テーパ面が形成される。このねじ体側テーパ面は、中心側がワッシャ50から遠ざかるように傾斜しているので、結果として、凹の円錐形状となる。結果、図29乃至図31に示すように、係合するワッシャ50と雌ねじ体90の合計の軸方向寸法を大きくすることなく、ワッシャ側当接部110の軸方向寸法Jを大きくすることが可能となり、ワッシャ型当接部110と雄ねじ側当接部120の係合部分の周方向の係合強度を高めることが可能となる。 23 to 25, the female screw body 90 is formed with a seat portion 92 that faces the first receiving portion 60 of the washer 50. On the seat portion 92 of the female screw body 90, a screw body side unevenness 94 is formed. The threaded body side seat portion 92 is formed with a threaded body side tapered surface inclined in the radial direction. Since the screw side taper surface is inclined so that the center side is away from the washer 50, a concave conical shape is obtained as a result. As a result, as shown in FIGS. 29 to 31, it is possible to increase the axial dimension J of the washer-side contact portion 110 without increasing the total axial dimension of the engaging washer 50 and the female screw body 90. Thus, the engagement strength in the circumferential direction of the engagement portion between the washer-type contact portion 110 and the male screw side contact portion 120 can be increased.
 上記第四実施形態のねじ体の締結構造の変形例を図32乃至図41に示す。なお、雌ねじ体90については、図23乃至図25で示すものと同じであることから、ここでの図示を省略する。 Modification examples of the fastening structure of the screw body according to the fourth embodiment are shown in FIGS. Since the female screw body 90 is the same as that shown in FIGS. 23 to 25, the illustration is omitted here.
 図31に示すように、本変形例に係る雄ねじ体10の雄ねじ側当接部120は、周方向に等間隔で24か所に形成される。即ち、複数の雄ねじ側当接部120が15°の位相ピッチで配置される。なお、雄ねじ側当接部120の軸心からの最小距離(凹みの底部)35Yは、雄ねじ部30bの最大半径30bXより小さく、且つ、雄ねじ部30bの最小半径(谷底半径)30bYより大きく設定される。 As shown in FIG. 31, the male screw side contact portions 120 of the male screw body 10 according to this modification are formed at 24 locations at equal intervals in the circumferential direction. That is, the plurality of male screw side contact portions 120 are arranged at a phase pitch of 15 °. In addition, the minimum distance (dent bottom) 35Y from the axial center of the male screw side contact portion 120 is set to be smaller than the maximum radius 30bX of the male screw portion 30b and larger than the minimum radius (valley bottom radius) 30bY of the male screw portion 30b. The
 具体的に図32に拡大して示すように、ねじ山の高さをHとした場合、雄ねじ側当接部120の凹みの半径方向高さS(即ち、雄ねじ部30bのねじ山の頂から半径方向内側に向かう凹みの省略量)は、ねじ山の高さHの4分の3を上限として省略することが好ましく、より好ましくは、ねじ山の高さHの3分の2を上限として省略し、更に望ましくは、ねじ山の高さHの2分の1を上限として省略する。一方で、雄ねじ側当接部120の凹みの高さSは、ねじ山の高さHの4分の1以上の範囲内で省略することが好ましい。ここでは、ねじ山の高さHの約3分の2に設定される。このようにすることで、雄ねじ側当接部120の軸方向の周囲に、ねじ山の谷底30Cを全周に亘って残存させることができる。また、雄ねじ側当接部120の凹みのV字形状の開き角度Kは、45°を上限とすることが好ましく、より好ましくは60°を上限とし、ここでは60°に設定される。 Specifically, as shown in an enlarged view in FIG. 32, when the height of the screw thread is H, the radial height S of the recess of the male screw side contact part 120 (that is, from the top of the screw thread of the male screw part 30b). The amount of omission of the dent inward in the radial direction) is preferably omitted with the upper limit being three-quarters of the thread height H, and more preferably with two-thirds of the thread height H being the upper limit. Omitted, and more preferably, the upper limit is one half of the thread height H. On the other hand, it is preferable that the height S of the recess of the male screw side contact portion 120 is omitted within a range of ¼ or more of the height H of the thread. Here, it is set to about two-thirds of the height H of the thread. By doing in this way, the thread bottom 30C of the thread can be left around the entire circumference of the male screw side contact portion 120 in the axial direction. Further, the opening angle K of the V-shaped recess of the male screw side contact portion 120 is preferably 45 ° as an upper limit, more preferably 60 ° as an upper limit, and is set to 60 ° here.
 更に雄ねじ側当接部120の凹みを軸方向から視た場合、凹みのV字形状における周方向に沿った最大開き幅T1は、隣接するV字形状の周方向に沿った谷部間距離T2よりも小さくなる。なお、凹みの最大開き幅T1は、図36に示すように、ワッシャ側当接部110を軸方向から視た場合における、周方向に沿った最大基底幅T3と略一致する。このようにすると、ワッシャ型当接部110と雄ねじ側当接部120が周方向に係合する状態において、各ワッシャ型当接部110の周方向の最大せん断距離が、最大基底幅T3(即ち最大開き幅T1)となり、各雄ねじ側当接部120の周方向の最大せん断距離が、谷部間距離T2となり、T2>T3の関係が成立する。 Further, when the recess of the male screw side contact portion 120 is viewed from the axial direction, the maximum opening width T1 along the circumferential direction in the V shape of the recess is the distance T2 between the valleys along the circumferential direction of the adjacent V shape. Smaller than. As shown in FIG. 36, the maximum opening width T1 of the dent substantially matches the maximum base width T3 along the circumferential direction when the washer-side contact portion 110 is viewed from the axial direction. In this way, in the state where the washer-type contact portion 110 and the male screw-side contact portion 120 are engaged in the circumferential direction, the maximum shear distance in the circumferential direction of each washer-type contact portion 110 is the maximum base width T3 (that is, The maximum opening width T1), and the maximum shear distance in the circumferential direction of each male screw side contact portion 120 is the distance T2 between the valleys, and the relationship of T2> T3 is established.
 雄ねじ側当接部120は、図34に示すように、雄ねじ部30bの螺旋条が重畳されることによって軸方向に分断されており、剛性が低下しやすい。一方、ワッシャ型当接部110は、図37に示すように、軸方向に延びる峰となることから剛性が高い。この形状的な特徴から生じる剛性の違いを、T2>T3の関係で補うことができる。 As shown in FIG. 34, the male screw side contact portion 120 is divided in the axial direction by superimposing the spiral strips of the male screw portion 30b, and the rigidity is likely to be lowered. On the other hand, as shown in FIG. 37, the washer-type contact portion 110 has a high rigidity because it is a peak extending in the axial direction. The difference in rigidity resulting from this shape feature can be compensated by the relationship of T2> T3.
 更に上記実施形態の雌ねじ体は、主として、一般的な六角ナットの場合を例示したが、本発明はこれに限定されず、例えばフランジ付ナットを採用することができる。フランジによって連携部材(ワッシャ)との係合面積を広くすることができる。 Furthermore, although the female screw body of the above embodiment is exemplified mainly for a general hex nut, the present invention is not limited to this, and a flanged nut, for example, can be adopted. The engagement area with the cooperating member (washer) can be widened by the flange.
 本発明の実施例は、上記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。 The embodiments of the present invention are not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.
 本発明によれば、簡便な構造によって、ねじ体の緩み回転を確実に防止することが可能となる。 According to the present invention, it is possible to reliably prevent loose rotation of the screw body with a simple structure.
10  雄ねじ体
20  頭部
30  軸部
30a 円筒部
30b 雄ねじ部
35  雄ねじ側連携領域
50  ワッシャ
52  貫通孔
60  第一受部
64  第一受部側凹凸
70  第二受部
80  被締結部材
90  雌ねじ体
91  筒部
91a 雌ねじ側連携領域
91b 雌ねじ部
92  ねじ体側座部
94  ねじ体側凹凸
98  雌ねじ側当接部
110 ワッシャ側当接部
110X 第一ワッシャ側当接領域
110Y 第二ワッシャ側当接領域
120 雄ねじ側当接部
120X 雄ねじ側当接領域
120Y 雄ねじ側当接領域
DESCRIPTION OF SYMBOLS 10 Male screw body 20 Head part 30 Shaft part 30a Cylindrical part 30b Male screw part 35 Male screw side cooperation area | region 50 Washer 52 Through-hole 60 First receiving part 64 First receiving part side unevenness 70 Second receiving part 80 Fastened member 90 Female screw body 91 Cylindrical portion 91a Female thread side cooperation region 91b Female thread portion 92 Screw body side seat portion 94 Screw body side unevenness 98 Female screw side contact portion 110 Washer side contact portion 110X First washer side contact region 110Y Second washer side contact region 120 Male thread side Contact part 120X Male thread side contact area 120Y Male thread side contact area

Claims (26)

  1.  雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成されることを特徴とする雄ねじ体。 A male screw body, wherein a male screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed in a shaft portion having a male screw portion.
  2.  前記雄ねじ側連携領域が、前記雄ねじ部と重なるように形成されることを特徴とする請求の範囲1に記載の雄ねじ体。 The male screw body according to claim 1, wherein the male screw side cooperation region is formed so as to overlap the male screw portion.
  3.  前記雄ねじ部におけるねじ山の一部が省略された形状とすることで、前記雄ねじ側連携領域が、前記雄ねじ部と重なるように形成されることを特徴とする請求の範囲2に記載の雄ねじ体。 The male screw body according to claim 2, wherein the male screw side cooperation region is formed so as to overlap the male screw portion by forming a shape in which a part of the screw thread in the male screw portion is omitted. .
  4.  前記雄ねじ側連携領域は、前記雄ねじ部におけるねじ山の高さの4分の3を上限として省略された形状となることを特徴とする請求の範囲3に記載の雄ねじ体。 The male screw body according to claim 3, wherein the male screw side cooperation region has a shape omitted with an upper limit of three-fourths of the height of the screw thread in the male screw portion.
  5.  前記雄ねじ側連携領域が、前記雄ねじ部よりも基端側の基部と重なるように形成されることを特徴とする請求の範囲1乃至4のいずれかに記載の雄ねじ体。 The male screw body according to any one of claims 1 to 4, wherein the male screw side cooperation region is formed so as to overlap a base portion on a base end side with respect to the male screw portion.
  6.  前記基部における前記雄ねじ側連携領域の軸心からの最大距離が、前記雄ねじ部の軸心からの最大距離よりも大きくなることを特徴とする請求の範囲5に記載の雄ねじ体。 The male screw body according to claim 5, wherein a maximum distance from an axis of the male screw side cooperation region in the base part is larger than a maximum distance from the axis of the male screw part.
  7.  前記基部における前記雄ねじ側連携領域の軸心からの最小距離が、前記雄ねじ部の軸心からの最大距離よりも大きくなることを特徴とする請求の範囲5又は6に記載の雄ねじ体。 The male screw body according to claim 5 or 6, wherein a minimum distance from the axial center of the male screw side cooperation region in the base part is larger than a maximum distance from the axial center of the male screw part.
  8.  前記雄ねじ側連携領域が、前記軸部に挿入される連携部材と周方向に係合することを特徴とする請求の範囲1乃至7のいずれかに記載の雄ねじ体。 The male screw body according to any one of claims 1 to 7, wherein the male screw side cooperation region engages with a cooperation member inserted into the shaft portion in a circumferential direction.
  9.  前記雄ねじ側連携領域において前記軸部に挿入される連携部材と係合する軸方向距離が、前記雄ねじ部のねじ山のピッチ以上となることを特徴とする請求の範囲8に記載の雄ねじ体。 The male screw body according to claim 8, wherein an axial distance of engagement with a cooperating member inserted into the shaft portion in the male screw side cooperating region is equal to or greater than a thread pitch of the male screw portion.
  10.  前記雄ねじ側連携領域において前記軸部に挿入される連携部材と係合する軸方向距離が、前記雄ねじ部のねじ山のピッチの二倍以上となることを特徴とする請求の範囲8に記載の雄ねじ体。 The axial distance that engages with a cooperation member that is inserted into the shaft portion in the male screw side cooperation region is at least twice the thread pitch of the male screw portion. Male screw body.
  11.  前記雄ねじ側連携領域が、螺旋状に形成されることを特徴とする請求の範囲1乃至10のいずれかに記載の雄ねじ体。 The male screw body according to any one of claims 1 to 10, wherein the male screw side cooperation region is formed in a spiral shape.
  12.  雄ねじ体の雄ねじ部を挿通させ得る貫通孔が形成される連携部材であって、前記貫通孔が非正円形となっており、かつ、前記雄ねじ体と螺合する雌ねじ体と周方向に係合する係合機構を有することを特徴とする連携部材。 A cooperating member in which a through-hole through which the male screw portion of the male screw body can be inserted is formed, and the through-hole is non-circular and engages with a female screw body that is screwed with the male screw body in the circumferential direction. A cooperating member characterized by having an engaging mechanism.
  13.  前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチ以上となることを特徴とする請求の範囲12に記載の連携部材。 The linkage member according to claim 12, wherein an axial distance of the through hole is equal to or greater than a pitch of a thread of the male screw body.
  14.  前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチの二倍以上となることを特徴とする請求の範囲12に記載の連携部材。 The link member according to claim 12, wherein an axial distance of the through hole is at least twice a pitch of a thread of the male screw body.
  15.  前記貫通孔の軸方向距離が、前記雄ねじ体のねじ山のピッチの三倍以上となることを特徴とする請求の範囲12に記載の連携部材。 The link member according to claim 12, wherein an axial distance of the through hole is at least three times a pitch of a thread of the male screw body.
  16.  前記係合機構は、周方向に複数の凹凸を有することを特徴とする請求の範囲12乃至15のいずれかに記載の連携部材。 The cooperation member according to any one of claims 12 to 15, wherein the engagement mechanism has a plurality of irregularities in the circumferential direction.
  17.  前記雌ねじ体と対向する面が、軸心側が前記雌ねじ体側に凸となる円錐形状のテーパ面となることを特徴とする請求の範囲12乃至16のいずれかに記載の連携部材。 The cooperating member according to any one of claims 12 to 16, wherein the surface facing the female threaded body is a conical tapered surface whose axial center is convex toward the female threaded body.
  18.  前記雌ねじ体に対する前記係合機構は、軸方向の両表面にそれぞれ形成されることを特徴とする請求の範囲12乃至17のいずれかに記載の連携部材。 The linkage member according to any one of claims 12 to 17, wherein the engagement mechanism for the female screw body is formed on both axial surfaces.
  19.  ワッシャであることを特徴とする請求の範囲12乃至18のいずれかに記載の連携部材。 The link member according to any one of claims 12 to 18, wherein the link member is a washer.
  20.  雌ねじ部を有する筒部において、軸方向から視て断面非正円形となる雌ねじ側連携領域が形成されることを特徴とする雌ねじ体。 A female screw body characterized in that a female screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed in a cylindrical portion having a female screw portion.
  21.  前記雌ねじ側連携領域の軸心からの最小距離は、前記雌ねじ部の軸心からの最小距離よりも大きくなることを特徴とする請求の範囲20に記載の雌ねじ体。 21. The female screw body according to claim 20, wherein a minimum distance from the axis of the female screw side cooperation region is larger than a minimum distance from the axis of the female screw portion.
  22.  前記雌ねじ側連携領域は、雄ねじ体の軸部と周方向に係合することを特徴とする請求の範囲20又は21に記載の雌ねじ体。 The female screw body according to claim 20 or 21, wherein the female screw side cooperation region engages with a shaft portion of the male screw body in a circumferential direction.
  23.  前記雌ねじ側連携領域は、半径方向に弾性変形可能となっていることを特徴とする請求の範囲20乃至22のいずれかに記載の雄ねじ体。 The male screw body according to any one of claims 20 to 22, wherein the female screw side cooperation region is elastically deformable in a radial direction.
  24.  雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成される雄ねじ体と、
     前記雄ねじ部を挿通させ得る貫通孔が形成される連携部材であって、前記貫通孔が非正円形となることで前記雄ねじ側連携領域と周方向に係合し、かつ、前記雄ねじ体と螺合する雌ねじ体と周方向に係合する係合機構を有することを特徴とする連携部材と、を備える
     ことを特徴とするねじ体締結構造。
    In the shaft portion having the male screw portion, a male screw body in which a male screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed,
    A cooperating member in which a through-hole through which the male screw portion can be inserted is formed, and the through-hole is non-circular so that the male screw side cooperating region is engaged in the circumferential direction, and the male screw body and the screw are threaded. A threaded body fastening structure comprising: a female threaded body that engages with a cooperating member that has an engagement mechanism that engages in a circumferential direction.
  25.  前記連携部材は、前記雌ねじ体との前記係合機構を、軸方向の両表面にそれぞれ有しており、
     前記雌ねじ体が前記連携部材の軸方向の両側に配置されることで、該雌ねじ体が前記連携部材と周方向に係合する
     ことを特徴とする請求の範囲24に記載のねじ体締結構造。
    The linkage member has the engagement mechanism with the female screw body on both axial surfaces,
    The screw body fastening structure according to claim 24, wherein the female screw body is disposed on both sides in the axial direction of the cooperation member, so that the female screw body is engaged with the cooperation member in the circumferential direction.
  26.  雄ねじ部を有する軸部において、軸方向から視て断面非正円形となる雄ねじ側連携領域が形成される雄ねじ体と、
     前記雄ねじ部と螺合する雌ねじ部を有する筒部において、軸方向から視て断面非正円形となる雌ねじ側連携領域が形成される雌ねじ体と、を備え、
     前記雄ねじ側連携領域と前記雌ねじ側連携領域は、外力による相対回転を許容しつつ、互いに周方向に係合する構造となっている
     ことを特徴とするねじ体締結構造。
    In the shaft portion having the male screw portion, a male screw body in which a male screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed,
    In the cylindrical portion having a female screw portion that is screwed with the male screw portion, a female screw body in which a female screw side cooperation region having a non-circular cross section when viewed from the axial direction is formed, and
    The screw body fastening structure, wherein the male screw side cooperation region and the female screw side cooperation region are configured to engage with each other in the circumferential direction while allowing relative rotation by an external force.
PCT/JP2015/069500 2014-07-07 2015-07-07 Male screw body, coupling member, female screw body, and screw body fastening structure WO2016006598A1 (en)

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WO2019192574A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure having dumbbell-shaped symmetrical bidirectional tapered thread external thread and traditional thread
WO2019192555A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of bolt and nut of thread outlining symmetrically and bidirectionally tapered olivary shape
JP2020014877A (en) * 2016-11-30 2020-01-30 ストライカー・ユーロピアン・ホールディングス・I,リミテッド・ライアビリティ・カンパニー Spinal fixation systems
USD898196S1 (en) 2017-07-10 2020-10-06 Stryker European Holdings I, Llc Spinal fastener with serrated thread

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WO2019192555A1 (en) * 2018-04-07 2019-10-10 玉环胜友工具有限公司 Connection structure of bolt and nut of thread outlining symmetrically and bidirectionally tapered olivary shape

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