JPH0262726B2 - - Google Patents

Info

Publication number
JPH0262726B2
JPH0262726B2 JP17073187A JP17073187A JPH0262726B2 JP H0262726 B2 JPH0262726 B2 JP H0262726B2 JP 17073187 A JP17073187 A JP 17073187A JP 17073187 A JP17073187 A JP 17073187A JP H0262726 B2 JPH0262726 B2 JP H0262726B2
Authority
JP
Japan
Prior art keywords
nut
conical
grooves
central axis
protrusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP17073187A
Other languages
Japanese (ja)
Other versions
JPS6415514A (en
Inventor
Hiroyuki Wada
Toshihiko Kuwabara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Seimitsu Manufacturing Co Ltd
Original Assignee
Fuji Seimitsu Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Seimitsu Manufacturing Co Ltd filed Critical Fuji Seimitsu Manufacturing Co Ltd
Priority to JP17073187A priority Critical patent/JPS6415514A/en
Publication of JPS6415514A publication Critical patent/JPS6415514A/en
Publication of JPH0262726B2 publication Critical patent/JPH0262726B2/ja
Granted legal-status Critical Current

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  • Transmission Devices (AREA)
  • Bolts, Nuts, And Washers (AREA)

Description

【発明の詳細な説明】 本発明は、座金及びナツトからなる緩み止めナ
ツト組合わせ体に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking nut combination comprising a washer and a nut.

ナツトの上半部を、この部分にスパナ等を係合
させ当該ナツトを回転させるための回転駆動機構
とすべく六角形状に形成し、下半部を円錐状突起
とし、この円錐状突起に割溝を設け、このナツト
に組合わせるための座金部材に、前記円錐状突起
の形状に対応する形状の円錐状貫通孔を形成し、
この円錐状貫通孔を円錐状突起に嵌合させて、割
溝で分割された円錐状突起を絞り込み、ナツトの
めねじを嵌合すべきベルトのおねじに接触干渉さ
せて緩み止めを行う緩み止めナツトは知られてい
る。
The upper half of the nut is formed into a hexagonal shape to serve as a rotational drive mechanism for engaging a spanner or the like to rotate the nut, and the lower half is formed into a conical projection, which is divided into two parts. a groove is provided, and a conical through hole having a shape corresponding to the shape of the conical projection is formed in a washer member to be assembled with the nut;
This conical through-hole is fitted into the conical protrusion, the conical protrusion divided by the groove is narrowed down, and the female thread of the nut contacts and interferes with the male thread of the belt to be fitted to prevent loosening. Stop nuts are known.

しかしながら、これ等の割溝によつて分割され
たナツトの弾性変形に基づいて、ナツトの下半部
のめねじだけが嵌合ボルトのおねじに接触干渉す
るので、緩み止め性が不十分であるという欠点が
ある。
However, due to the elastic deformation of the nut divided by these grooves, only the female thread in the lower half of the nut comes into contact with and interferes with the male thread of the fitting bolt, resulting in insufficient locking properties. There is a drawback.

本発明は、前記諸点に鑑み成されたものであ
り、その目的とするところは、ボルト等の結合体
に破損を招く恐れが無く有効且つ確実なゆるみ止
めの効果を奏し得る座金及びナツトからなる緩み
止めナツト組合わせ体を提供することである。
The present invention has been made in view of the above points, and its object is to provide a washer and a nut that can effectively and reliably prevent loosening without causing damage to the joints such as bolts. An object of the present invention is to provide a locking nut combination.

前記目的は、本発明によれば、ナツト本体と、
このナツト本体の中心軸を通過する伸延方向に沿
つて当該中心軸に対して中心角度が夫々等しくな
るように放射状に配置され、当該ナツト本体の一
端面の側に形成された第1の複数の溝と、前記中
心軸に関して同軸的に配置され、一方の端部が前
期ナツト本体の他端面に一体的に接続され、当該
一方の端部から他方の端部にかけて先細になるよ
うに且つ当該中心軸に沿う方向に関する前記ナツ
ト本体の長さより長く形成された円錐状突出部
と、前記中心軸を通過する伸延方向に沿つて当該
中心軸に対して中心角度が夫々等しく且つ前記第
1の複数の溝の前記中心角度の中間に夫々位置す
るように放射状に配置され、前記円錐状突出部の
他方の端部の側に形成された第2の複数の溝と、
座金部材と、この座金部材の一端面において当該
円錐状突出部の最大径より小さい径を有して開口
し且つ当該座金部材の他端面において当該円錐状
突出部の最小径より小さい径を有して開口し、前
記円錐状突出部と同軸的に嵌合すべく当該座金部
材に形成された円錐状貫通孔とからなり、前記第
1の複数の溝の底部は前記円錐状突出部に位置
し、前記第2の複数の溝の底部は前記ナツト本体
に位置することを特徴とする緩み止めナツト組合
わせ体によつて達成される。
According to the invention, the objective is to provide a nut body;
The first plurality of first plurality of nuts are arranged radially along the extension direction passing through the central axis of the nut body so that the central angles thereof are equal to each other, and are formed on one end surface side of the nut body. The groove is arranged coaxially with respect to the central axis, one end is integrally connected to the other end surface of the nut body, and the groove is tapered from the one end to the other end; a conical protrusion formed longer than the length of the nut body in the direction along the axis; and a conical protrusion that is formed to be longer than the length of the nut body in the direction along the axis; a second plurality of grooves arranged radially so as to be located in the middle of the center angle of the grooves, and formed on the other end side of the conical protrusion;
a washer member, the washer member having an opening having a diameter smaller than the maximum diameter of the conical protrusion at one end face, and having a diameter smaller than the minimum diameter of the conical protrusion at the other end face of the washer member; a conical through hole formed in the washer member so as to be open and coaxially fitted with the conical protrusion, and the bottoms of the first plurality of grooves are located in the conical protrusion. , the bottom of said second plurality of grooves is achieved by a locking nut combination located in said nut body.

ここで、本発明を六角ナツトに適用した好まし
い例に付いて説明する。ナツトの上半部はスパナ
等によつて回転トルクを伝達されるように六角形
に形成されている。またナツトの下半部は先端が
先細になる円錐状突起に形成されており、当該ナ
ツトの中心軸に沿う方向に関する高さはナツトの
上半部の当該高さより高く形成されている。この
円錐状突起の傾斜角、即ちテーパ角は2度から10
度の間の角度に形成されている。一方、前記六角
ナツトに組合わされる座金には、前記円錐状突起
の形状に対応する形状を有した、即ち傾斜角が2
度から10度の間の角度を有した円錐状貫通孔が形
成されている。しかしながら、この円錐状貫通孔
における最大直径部は、円錐状突起の最大直径部
より小さく形成されており、且つ円錐状貫通孔に
おける最小直径部は、円錐状突起の最小直径部よ
り小さく形成されている。前記六角ナツトの上下
の両端面には、ナツトの中心軸から外方向に伸延
する、即ち放射状に配置された割溝が夫々形成さ
れている。これらの割溝において、上端面上に形
成された割溝はナツトの中心軸に対して中心角度
が夫々等しく且つ下端面上に形成された割溝もナ
ツトの中心軸に対して中心角度が夫々等しいと同
時に前記上端面上に形成された割溝の夫々の中心
角度の中間に位置すべく配置されている。またこ
れらの割溝のナツトの中心軸に沿う方向に関する
夫々の深さは、ナツト全体の高さの1/2以上、よ
り好ましくは70%を占める高さを有して形成され
ている。
Here, a preferred example in which the present invention is applied to a hexagonal nut will be explained. The upper half of the nut is formed into a hexagonal shape so that rotational torque can be transmitted by a spanner or the like. The lower half of the nut is formed into a conical projection with a tapered tip, and the height of the nut in the direction along the central axis is higher than the height of the upper half of the nut. The inclination angle, or taper angle, of this conical protrusion is from 2 degrees to 10 degrees.
Formed at an angle between degrees. On the other hand, the washer combined with the hexagonal nut has a shape corresponding to the shape of the conical projection, that is, an inclination angle of 2.
A conical through hole is formed with an angle between 10 degrees and 10 degrees. However, the maximum diameter portion of this conical through hole is formed smaller than the maximum diameter portion of the conical projection, and the minimum diameter portion of the conical through hole is formed smaller than the minimum diameter portion of the conical projection. There is. Grooves extending outward from the central axis of the nut, that is, radially arranged, are formed on both upper and lower end surfaces of the hexagonal nut. In these grooves, the grooves formed on the upper end face have the same central angle with respect to the central axis of the nut, and the grooves formed on the lower end face also have central angles with respect to the central axis of the nut. They are arranged so as to be equal and at the same time to be located in the middle of the respective center angles of the grooves formed on the upper end surface. Further, the depth of each of these grooves in the direction along the central axis of the nut is formed to have a height that accounts for 1/2 or more, and more preferably 70%, of the overall height of the nut.

以下、本発明の好ましい具体例を更に図面に基
づいて説明する。
Hereinafter, preferred embodiments of the present invention will be further explained based on the drawings.

第1図、第2図及び第3図に於いて、ナツト1
は、ナツト本体2と、このナツト本体2の、第2
図では下側である、端面3上に形成された円錐状
の突出部4とから構成されている。
In Figures 1, 2 and 3, Nut 1
is the nut body 2 and the second nut body 2.
It consists of a conical protrusion 4 formed on the end surface 3, which is the lower side in the figure.

また、ナツト本体2の、第2図では上側であ
る、端面5上には、ナツト1の中心軸としての軸
心7に関する中心角度における位置の間隔が相互
に等しい、本具体例においては夫々120度の中心
角度に関する位置間隔で溝6が3個夫々形成され
ている。これらの3個の溝6は、夫々の溝6の径
方向に関する伸延方向の延長線が軸心7を通過す
るように放射状に配置されており、また軸心7に
沿う方向に関する夫々の深さ8を規定する溝6の
底部40が、ナツト本体2の当該方向に関する厚
さ9を越えて突出部4の当該方向に関する厚さ1
0の半ばに迄達する位置に形成されている。3個
の溝6は、本具体例の如く角ナツトである場合に
は、スパナの如き締付け工具との係合面11の中
央部分に夫々設けるのが好ましい。端面5上に
は、また面取り角度b1の面取り部12が形成さ
れている。本具体例においては、面取り角度b1
は30度に設定されている。
Further, on the end surface 5 of the nut body 2, which is the upper side in FIG. Three grooves 6 are formed at positional intervals with respect to the central angle of degrees. These three grooves 6 are arranged radially such that the extension line in the radial direction of each groove 6 passes through the axis 7, and the depth of each groove in the direction along the axis 7 is 8 exceeds the thickness 9 of the nut body 2 in this direction and the thickness 1 of the protrusion 4 in that direction.
It is formed at a position that reaches the middle of 0. In the case of a square nut as in this specific example, the three grooves 6 are preferably provided at the center of the surface 11 that engages with a tightening tool such as a spanner. A chamfered portion 12 having a chamfer angle b1 is also formed on the end face 5. In this specific example, the chamfer angle b1
is set at 30 degrees.

ナツト本体2及び円錐状の突出部4夫々には、
軸心7と同心に配置され、谷径がRである連続し
ためねじ13が、ナツト1を貫通して形成されて
いる。
The nut body 2 and the conical protrusion 4 each include
A continuous internal thread 13, which is arranged concentrically with the axis 7 and has a root diameter R, is formed to pass through the nut 1.

円錐状の突出部4は、端面3から離れるに従つ
て次第に直径が小さくなるように形成されてお
り、即ちテーパ形状を有しており、例えば第2図
及び第3図に於いては、端面3に最も近い最大径
の部分がR1であり、突出部4の先端14である
最小径の部分がR2でありR1>R2、これらR
1とR2との直径差及び円錐状の突出部4の厚さ
10各々から前述のテーパ形状が、言い換えると
テーパの角度aが決定される。突出部4の先端1
4には、面取り部を設けても良い。
The conical protrusion 4 is formed so that its diameter gradually becomes smaller as it moves away from the end surface 3, that is, it has a tapered shape. For example, in FIGS. 2 and 3, the end surface 3 is the largest diameter part closest to R1, and the smallest diameter part which is the tip 14 of the protrusion 4 is R2, and R1>R2, these R
The above-mentioned taper shape, in other words, the taper angle a is determined from the diameter difference between R1 and R2 and the thickness 10 of the conical protrusion 4. Tip 1 of protrusion 4
4 may be provided with a chamfered portion.

また、ナツト1における端面5の反対側に位置
する円錐状の突出部4の先端14側には、更にナ
ツト1の軸心7に関する中心角度における位置の
間隔が相互に等しく、本具体例においては夫々
120度の中心角度に関する位置間隔で溝17が3
個夫々形成されている。これらの3個の溝17
は、夫々の溝17の伸延方向の延長線が軸心7を
通過するように放射状に配置されており、また軸
心7に沿う方向に関する夫々の深さ18を規定す
る溝17の底部41が、円錐状の突出部4の当該
方向に関する厚さ10を越えてナツト本体2の当
該方向に関する厚さ9の半ばに迄達する位置に形
成されている。尚、これらの3個の溝17は、前
述の3個の溝6における軸心7に関する夫々の中
心角度に関する位置の中間に夫々存在しており、
即ち3個の溝17及び3個の溝6は中心角度に関
する位置が相互に60度となるように交互に配置さ
れ、端面5及び先端14の夫々の面上に夫々形成
されている。
Further, on the tip 14 side of the conical protrusion 4 located on the opposite side of the end surface 5 of the nut 1, the intervals in the center angle with respect to the axis 7 of the nut 1 are mutually equal, and in this specific example, Respectively
3 grooves 17 with positional spacing about a center angle of 120 degrees
They are individually formed. These three grooves 17
are arranged radially such that the extended line of each groove 17 in the extension direction passes through the axis 7, and the bottom part 41 of the groove 17 defining the depth 18 in the direction along the axis 7 is , is formed at a position extending beyond the thickness 10 of the conical protrusion 4 in the relevant direction and reaching the middle of the thickness 9 of the nut body 2 in the relevant direction. It should be noted that these three grooves 17 are located between the positions of the three grooves 6 described above with respect to the respective center angles with respect to the axis 7,
That is, the three grooves 17 and the three grooves 6 are alternately arranged so that their positions with respect to the center angle are 60 degrees from each other, and are formed on the respective surfaces of the end surface 5 and the tip 14, respectively.

第4図、第5図及び第6図に於いて、座金部材
としてのワツシヤ20は、端面21から端面29
にかけて貫通し、当該ワツシヤ20の内周面26
を形成する円錐状の貫通孔としての凹所22を有
している。
In FIG. 4, FIG. 5, and FIG. 6, the washer 20 as a washer member is shown in
and penetrates through the inner circumferential surface 26 of the washer 20.
It has a recess 22 as a conical through hole that forms a .

凹所22はワツシヤ20の中心軸としての軸心
23に関して同心的に形成されている。凹所22
はナツト1突出部4の厚さ10にほぼ等しい値の
深さ24を有している。更に凹所22は、端面2
1から離れるに従つて次第に直径が小さくなるよ
うに形成されており、即ちテーパ形状を有してお
り、例えば第5図に於いては、端面21に最も近
い最大径の部分がR3であり、端面29に最も近
接した最小径の部分がR4であり R3<R4、
これらR3とR4との直径差及び円錐状の凹所2
2の深さ24各々から前述のテーパ形状が、言い
換えるとテーパの角度a2が決定される。このR
3はテーパ形状の突出部4の最大径R1よりも小
さく、且つR4はテーパ形状の突出部4の最小径
R2よりも小さい値であるテーパ形状を有してい
るR1>R3<R2<R4。
The recess 22 is formed concentrically with respect to an axis 23 as the central axis of the washer 20. Recess 22
has a depth 24 approximately equal to the thickness 10 of the protrusion 4 of the nut 1. Further, the recess 22 is formed on the end surface 2
It is formed so that its diameter gradually decreases as it moves away from 1, that is, it has a tapered shape. For example, in FIG. 5, the maximum diameter portion closest to the end surface 21 is R3, The part with the smallest diameter closest to the end face 29 is R4, R3<R4,
Diameter difference between these R3 and R4 and conical recess 2
The above-mentioned taper shape, in other words, the taper angle a2 is determined from each of the depths 24 of 2. This R
3 is smaller than the maximum diameter R1 of the tapered protrusion 4, and R4 is smaller than the minimum diameter R2 of the tapered protrusion 4. R1>R3<R2<R4.

ワツシヤ20の端面29の周縁部には、面取り
角がb2である面取り部27が形成されている。
面取り部27の面取り角b2は好ましくは30度に
形成する。
A chamfered portion 27 having a chamfer angle b2 is formed on the peripheral edge of the end surface 29 of the washer 20.
The chamfer angle b2 of the chamfered portion 27 is preferably formed at 30 degrees.

以上のように構成されたナツト1及びワツシヤ
20を組合わせることによつて使用される、本発
明による緩み止めナツト組合わせ体は、第7図及
び第8図に示すように、ナツト1で被締付け物3
0を締付ける際、まず被締付け物30の孔31か
ら上方に突出したボルト32に対してワツシヤ2
0を装着する。その状態から次に、ナツト1がボ
ルト32に螺合され、ワツシヤ20のテーパ状の
凹所22にナツト1のテーパ状の突出部4が嵌合
される。即ち、突出部4及び凹所22の夫々のテ
ーパ面が互いに対応するように形成されているた
め、テーパ面は夫々面的な接触状態を維持してい
る。第7図及び第8図はナツト1が、第1の位置
P1からナツト1のめねじ13がボルト32のお
ねじ35に接触干渉を開始する第2の位置P2ま
でボルト32に螺入されて矢印33の方向に、移
動した状態を表している。ナツト1は、最終的に
は第3の位置P3まで移動し、この状態で最大の
緩み止め効果が得られるうに構成されている。第
2の位置P2と第3のの位置P3との間の距離
は、好ましくはナツト本体2の端面3と溝17の
底面41との間の距離に対応して設定される。即
ち、ナツト1の突出部4の円錐壁部16の直径
が、ワツシヤ20の凹所22の内周面26に接し
乍ら案内移動されると、突出部4の先端端14
が、被締付け物30の面に接近する。そして、突
出部4の円錐壁部16の直径がテーパ状に変化し
ているため、凹所22の内周面26が突出部4の
円錐壁部16に対して強く面接触しながら押圧干
渉し、ナツト1がねじ込まれるにたがつて円錐壁
部16は軸心7へ向かう方向(矢印36方向)へ
の押圧変位力を漸増的に受ける(第7図及び第8
図の2点鎖線で表したナツト1の状態)。ここで
ナツト1の端面5上には複数の溝6が、突出部4
の先端14には複数の溝17が夫々設けられてい
るため、円錐壁部16に作用する前述の変位力
は、第7図及び第8図に示す如く通常の状態で、
夫々幅S1を有する溝6及び溝17を夫々変形さ
せ、溝6の幅は狭まつてS3となり、溝17の幅
も狭まつてS2となる。即ち溝6及び溝17は押
圧変位力によつてその幅が変化し、このことによ
つて当該押圧変位力を弾性的に吸収するため、ナ
ツト1のめねじ13のボルト32のおねじ35に
対する螺合状態を弾性的な押圧力でもつて各螺合
部に対して平均的な押圧力を与えながらその状態
を維持することができ、即ちおねじ35をめねじ
13でもつてはがいじめ的に押圧することができ
緩み止めを確実に行い得る。尚、溝6及び溝17
夫々は、前述の変位力をナツト1において弾性的
に吸収し得る手段を構成している。
The locking nut assembly according to the present invention, which is used by combining the nut 1 and the washer 20 configured as described above, is a nut 1 covered with a nut 1, as shown in FIGS. 7 and 8. Fastener 3
0, first tighten the washer 2 against the bolt 32 that protrudes upward from the hole 31 of the object 30.
Attach 0. From this state, the nut 1 is then screwed onto the bolt 32, and the tapered protrusion 4 of the nut 1 is fitted into the tapered recess 22 of the washer 20. That is, since the tapered surfaces of the protrusion 4 and the recess 22 are formed to correspond to each other, the tapered surfaces maintain a state of planar contact with each other. 7 and 8, the nut 1 is screwed into the bolt 32 from the first position P1 to the second position P2 where the female thread 13 of the nut 1 starts contacting and interfering with the male thread 35 of the bolt 32. It shows a state of movement in the direction of arrow 33. The nut 1 is configured to eventually move to the third position P3, and in this state the maximum loosening prevention effect can be obtained. The distance between the second position P2 and the third position P3 is preferably set to correspond to the distance between the end surface 3 of the nut body 2 and the bottom surface 41 of the groove 17. That is, when the diameter of the conical wall portion 16 of the protrusion 4 of the nut 1 is guided while being in contact with the inner peripheral surface 26 of the recess 22 of the washer 20, the tip end 14 of the protrusion 4
approaches the surface of the object 30 to be fastened. Since the diameter of the conical wall portion 16 of the protruding portion 4 changes in a tapered shape, the inner circumferential surface 26 of the recess 22 makes strong surface contact with the conical wall portion 16 of the protruding portion 4 and presses against it. , as the nut 1 is screwed in, the conical wall portion 16 gradually receives a pressing displacement force in the direction toward the axis 7 (in the direction of the arrow 36) (see FIGS. 7 and 8).
(The state of nut 1 indicated by the two-dot chain line in the figure). Here, a plurality of grooves 6 are formed on the end surface 5 of the nut 1, and a protrusion 4
Since a plurality of grooves 17 are provided in the tip 14 of the conical wall 14, the above-mentioned displacement force acting on the conical wall 16 is reduced in the normal state as shown in FIGS. 7 and 8.
The grooves 6 and 17, each having a width S1, are deformed, and the width of the groove 6 is narrowed to S3, and the width of the groove 17 is also narrowed to S2. That is, the widths of the grooves 6 and 17 change depending on the pressure displacement force, and in order to elastically absorb the pressure displacement force, the width of the groove 6 and the groove 17 changes with respect to the male thread 35 of the bolt 32 of the female thread 13 of the nut 1. The screwed state can be maintained while applying an average pressing force to each screwed part using elastic pressing force, that is, the male thread 35 can be maintained in the female thread 13 in a teasing manner. It can be pressed to ensure locking. In addition, groove 6 and groove 17
Each constitutes means that can elastically absorb the above-mentioned displacement force in the nut 1.

従つて、前述の如く突出部4と凹所22との最
終的な嵌合状態、即ちナツト1が位置P3まで移
動した状態に於いては、溝6の幅が最小に、溝1
7の幅も最小に夫々なり、ナツト1は最大変形状
態となり、めねじ13がボルト32のおねじ35
のフランク面を強く弾性的に押圧し、めねじ13
及びおねじ35それぞれが互いに接触干渉し合
い、ナツト1のボルト32に対する緩み止めを確
実に生じさせる。
Therefore, as described above, in the final fitted state between the protrusion 4 and the recess 22, that is, in the state in which the nut 1 has moved to the position P3, the width of the groove 6 is at its minimum, and the width of the groove 1 is at its minimum.
The widths of the bolts 7 and 7 are also minimized, the nut 1 is in the maximum deformation state, and the female thread 13 is the male thread 35 of the bolt 32.
strongly and elastically press the flank surface of the female thread 13.
The male threads 35 and 35 contact and interfere with each other, thereby reliably preventing the nut 1 from loosening against the bolt 32.

以上の通り、本発明によれば、ナツトのテーパ
状即ち円錐状の突出部とワツシヤのテーパ状即ち
円錐状の凹所とを嵌合する際、前記突出部と凹所
との接触干渉により、ナツトに加わる力を、ナツ
トの両端面に夫々形成された複数の溝が効果的に
吸収し得、従つて、ナツトの取り付け、取り外し
を夫々繰返して行つてもねじ面を破損することも
無く、ナツトの緩み止め効果が低下することもな
く、ナツトに衝撃的な繰り返し外力が付加されて
も、緩み止め状態を維持し得、確実な緩み止め効
果を奏する緩み止めナツト組合わせ体せ体を提供
し得る。
As described above, according to the present invention, when the tapered or conical protrusion of the nut and the tapered or conical recess of the washer are fitted together, due to the contact interference between the protrusion and the recess, The force applied to the nut can be effectively absorbed by the plurality of grooves formed on both end faces of the nut. Therefore, even if the nut is repeatedly installed and removed, the threaded surface will not be damaged. To provide a locking nut combination assembly that does not reduce the locking effect of the nut, maintains the locking state even if an impactful external force is repeatedly applied to the nut, and exhibits a reliable locking effect. It is possible.

又、第9図に示すように前記座金部材としての
ワツシヤ20を被締付け部30に一体的に固定す
るようにしても良い。
Further, as shown in FIG. 9, the washer 20 as the washer member may be integrally fixed to the portion to be tightened 30.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明による緩み止めナツト組合わ
せ体のナツトの平面図、第2図は、第1図に示さ
れたナツトの部分断面正面図、第3図は、第1図
に示されたナツトの底面図、第4図は、本発明に
よる緩み度めナツト組合わせ体の座金部材として
のワツシヤの平面図、第5図は、第4図に示され
たワツシヤの−線における断面図、第6図
は、第4図に示されたワツシヤの底面図、第7図
は、本発明による緩み止めナツト組合わせ体が被
締付け部材を締付けるべくボルトに螺合した状態
において変形したナツトの状態を示す平面説明
図、第8図は、本発明による緩み止めナツト組合
わせ体が被締付け部材を締付けるべくボルトに螺
合した状態を示す断面説明図、第9図は、本発明
による緩み止めナツト組合わせ体のワツシヤを被
締付け部材に一体的に取り付けた状態を示す断面
説明図である。 1……ナツト、4……突出部、6,17……
溝、20……ワツシヤ、22……凹所。
1 is a plan view of a nut of a locking nut assembly according to the present invention, FIG. 2 is a partially sectional front view of the nut shown in FIG. 1, and FIG. 3 is a top view of the nut shown in FIG. 1. FIG. 4 is a plan view of a washer as a washer member of the loosening nut combination according to the present invention, and FIG. 5 is a cross-sectional view of the washer shown in FIG. 6 is a bottom view of the washer shown in FIG. 4, and FIG. 7 shows a deformed nut when the locking nut assembly according to the present invention is screwed onto a bolt to tighten a member to be tightened. FIG. 8 is a cross-sectional view showing a state in which the locking nut assembly according to the present invention is screwed onto a bolt to tighten a member to be tightened, and FIG. 9 is a plan view showing the locking nut assembly according to the present invention. FIG. 3 is an explanatory cross-sectional view showing a state in which the washer of the nut combination is integrally attached to a member to be tightened. 1...Natsuto, 4...Protrusion, 6,17...
Groove, 20...washia, 22...recess.

Claims (1)

【特許請求の範囲】 1 ナツト本体と、このナツト本体の中心軸を通
過する伸延方向に沿つて当該中心軸に対して中心
角度が夫々等しくなるように放射状に配置され、
当該ナツト本体の一端面の側に形成された第1の
複数の溝と、前記中心軸に関して同軸的に配置さ
れ、一方の端部が前期ナツト本体の他端面に一体
的に接続され、当該一方の端部から他方の端部に
かけて先細になるように且つ当該中心軸に沿う方
向に関する前記ナツト本体の長さより長く形成さ
れた円錐状突出部と、前記中心軸を通過する伸延
方向に沿つて当該中心軸に対して中心角度が夫々
等しく且つ前記第1の複数の溝の前記中心角度の
中間に夫々位置するように放射状に配置され、前
記円錐状突出部の他方の端部の側に形成された第
2の複数の溝と、座金部材と、この座金部材の一
端面において当該円錐状突出部の最大径より小さ
い径を有して開口し且つ当該座金部材の他端面に
おいて当該円錐状突出部の最小径より小さい径を
有して開口し、前記円錐状突出部と同軸的に嵌合
すべく当該座金部材に形成された円錐状貫通孔と
からなり、前記第1の複数の溝の底部は前記円錐
状突出部に位置し、前記第2の複数の溝の底部は
前記ナツト本体に位置することを特徴とする緩み
止めナツト組合わせ体。 2 前記円錐状突出部の外壁面が、前記中心軸に
対して2度から10度の角度を有してテーパ状に形
成されていることを特徴とする特許請求の範囲第
1項に記載の緩み止めナツト組合わせ体。 3 前記円錐状突出部及び円錐状貫通孔は、当該
円錐状突出部及び円錐状貫通孔相互が前記嵌合し
た状態で前記中心軸に沿う方向に相対移動される
ことによつて、前記円錐状突出部及び前記ナツト
本体を当該中心軸に向かう方向に偏位させておね
じ部に接触干渉させるべく構成されており、当該
接触干渉は、前記中心軸に沿う方向に関する前記
第1及び第2の複数の溝の底部の間の距離だけの
前記相対移動によつて生起されることを特徴とす
る特許請求の範囲第1項又は第2項に記載の緩み
止めナツト組合わせ体。 4 前記座金が、被締付け物に一体的に取付けら
れていることを特徴とする特許請求の範囲第1項
から第3項のいずれかに記載の緩み止めナツト組
合わせ体。
[Scope of Claims] 1 A nut body and radially arranged along an extension direction passing through the central axis of the nut body so that the center angles are equal to each other with respect to the central axis,
A first plurality of grooves formed on the side of one end surface of the nut body are arranged coaxially with respect to the central axis, one end is integrally connected to the other end surface of the nut body, and a conical protrusion that is tapered from one end to the other end and that is longer than the length of the nut body in the direction along the central axis; The grooves are arranged radially such that their center angles are equal to the center axis and are located between the center angles of the first plurality of grooves, and are formed on the other end side of the conical protrusion. a second plurality of grooves, a washer member, and an opening having a diameter smaller than the maximum diameter of the conical protrusion at one end face of the washer member and the conical protrusion at the other end face of the washer member; a conical through hole formed in the washer member to be opened with a diameter smaller than the minimum diameter of the conical protrusion and coaxially fitted with the conical protrusion, the bottom of the first plurality of grooves; is located on the conical protrusion, and the bottoms of the second plurality of grooves are located on the nut body. 2. The outer wall surface of the conical projection is tapered at an angle of 2 to 10 degrees with respect to the central axis. Anti-loosening nut combination. 3. The conical protrusion and the conical through hole are moved relative to each other in the direction along the central axis in the fitted state, whereby the conical protrusion and the conical through hole are moved relative to each other in the direction along the central axis. The protrusion and the nut body are configured to be displaced in a direction toward the central axis so as to contact and interfere with the threaded part, and the contact interference is caused by the contact interference between the first and second parts in the direction along the central axis. 3. A locking nut combination according to claim 1 or 2, characterized in that said relative movement is caused by the distance between the bottoms of a plurality of grooves. 4. The locking nut assembly according to any one of claims 1 to 3, wherein the washer is integrally attached to an object to be tightened.
JP17073187A 1987-07-08 1987-07-08 Lock nut assembly Granted JPS6415514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17073187A JPS6415514A (en) 1987-07-08 1987-07-08 Lock nut assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17073187A JPS6415514A (en) 1987-07-08 1987-07-08 Lock nut assembly

Publications (2)

Publication Number Publication Date
JPS6415514A JPS6415514A (en) 1989-01-19
JPH0262726B2 true JPH0262726B2 (en) 1990-12-26

Family

ID=15910344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17073187A Granted JPS6415514A (en) 1987-07-08 1987-07-08 Lock nut assembly

Country Status (1)

Country Link
JP (1) JPS6415514A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003056541A (en) * 2001-08-20 2003-02-26 Fukushima:Kk Nut and washer

Also Published As

Publication number Publication date
JPS6415514A (en) 1989-01-19

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