JPH0638171Y2 - Bolt rotation stop structure - Google Patents
Bolt rotation stop structureInfo
- Publication number
- JPH0638171Y2 JPH0638171Y2 JP1988118852U JP11885288U JPH0638171Y2 JP H0638171 Y2 JPH0638171 Y2 JP H0638171Y2 JP 1988118852 U JP1988118852 U JP 1988118852U JP 11885288 U JP11885288 U JP 11885288U JP H0638171 Y2 JPH0638171 Y2 JP H0638171Y2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- head
- recess
- ring
- fastened
- 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 - Lifetime
Links
Landscapes
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 (産業上の利用分野) 本考案は構造材などの被締付物をボルトで締付けて接続
または固定する際に生じるボルトの回り止め構造体に関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a bolt rotation preventing structure that is generated when a tightening object such as a structural material is tightened with a bolt to connect or fix the same.
(従来の技術) たとえば第4図に示したように固定物1に被締付物2を
接続する場合、固定物1にねじ穴3を形成させ、被締付
物2の凹所4からボルト5を挿入し、ねじ穴3にボルト
5をねじ込んで接続するのが一般的である。穴付ボルト
5の頭部5aを被締付物2の凹所4に落し込んで使用する
場合、ボルト5が緩んでボルトが回るのを防止するた
め、その回り止めとしてボルト5の頭部5aと凹所4の上
端部を溶接6によって固定している。(Prior Art) For example, as shown in FIG. 4, when connecting an object 2 to be fastened to a fixed object 1, a screw hole 3 is formed in the fixed object 1, and a bolt is inserted from a recess 4 of the object 2 to be fastened. It is common to insert 5 and screw the bolt 5 into the screw hole 3 for connection. When the head 5a of the bolt 5 with a hole is dropped into the recess 4 of the object to be fastened and used, the head 5a of the bolt 5 serves as a rotation stopper to prevent the bolt 5 from loosening and turning. The upper end of the recess 4 is fixed by welding 6.
また、例えば実公昭40-22327号公報に記載されているよ
うに、ボルトに筒型座金を嵌め込み、この座金の上周縁
部を締付板に設けた切欠溝に折り込んでボルトの回り止
めを行う装置も知られている。Further, for example, as described in Japanese Utility Model Publication No. 40-22327, a cylindrical washer is fitted into a bolt, and the upper peripheral edge of this washer is folded into a notch groove provided in a tightening plate to prevent the bolt from rotating. Devices are also known.
しかしながら、ボルト5の材質が合金鋼の場合、溶接に
よる割れ、劣化および強度の低下が生じる課題があっ
た。また溶接によって回り止めした構造ではメンテナン
ス時などにボルト5を取外す必要が生じた場合、溶接6
した部分を切除しなければならず、ボルト5を再使用す
ることができなくなるとともに切除作業に多くの労力を
費す必要があることが課題であった。However, when the material of the bolt 5 is an alloy steel, there is a problem that cracking, deterioration and strength reduction due to welding occur. Also, in the structure in which the rotation is prevented by welding, if it becomes necessary to remove the bolt 5 for maintenance, the welding 6
The problem was that the removed portion had to be cut off, the bolt 5 could not be reused, and a lot of labor was required for the cutting work.
一方、実公昭40-22327号公報に開示されたボルトの回り
止め装置は締付板に形成した切欠溝が締付板の角を削り
落した面取り程度であり、この切欠溝に折り込む筒状座
金の折込部も局所的な仮り止め程度であるため、折込部
の戻り抵抗、つまり回り止め抗力が小さい課題がある。On the other hand, the bolt detent device disclosed in Japanese Utility Model Publication No. 40-22327 has a notch groove formed in the tightening plate that has a chamfered shape in which a corner of the tightening plate is shaved off. Since the folding part is also only temporary temporary stop, there is a problem that the return resistance of the folding part, that is, the anti-rotation force is small.
本考案は上記課題を解決するためになされたもので、メ
ンテナンス時等のボルト取外し時に容易に取外しができ
るボルトの回り止め構造体を提供することにある。The present invention has been made to solve the above problems, and an object of the present invention is to provide a bolt detent structure that can be easily removed during bolt removal during maintenance or the like.
(課題を解決するための手段) 本考案は被締付物に形成されたねじ穴の上部にボルトが
ねじ込まれた際、ボルトの頭部が挿入される凹所を形成
し、かつこの凹所の側面にたて溝を形成するとともに、
ボルトの頭部にもたて溝を形成し、ボルトが被締付物に
ねじ込まれた状態でボルトの頭部側面と凹所の内面との
間に回り止めリングを挿着し、前記両たて溝内にピンを
挿入し前記回り止めリングの側面の一部を押圧してかし
め、前記たて溝内に前記ピンを固定して前記被締付物と
回り止めリングおよびボルトの頭部とを一体的に固定し
てなることを特徴とする。(Means for Solving the Problem) The present invention forms a recess into which a head of a bolt is inserted when a bolt is screwed into an upper portion of a screw hole formed in an object to be fastened, and this recess Form a vertical groove on the side of the
A vertical groove is also formed on the head of the bolt, and with the bolt screwed into the object to be fastened, a detent ring is inserted between the side of the head of the bolt and the inner surface of the recess. Insert the pin into the groove and press a part of the side surface of the anti-rotation ring to caulk, and fix the pin in the vertical groove to fix the object to be fastened, the anti-rotation ring and the head of the bolt. Is integrally fixed.
(作用) ボルトが緩み側に回ろうとした場合、被締付物凹所のた
て溝とボルト頭部のたて溝とにピンにより押圧してかし
められた回り止めリングに圧縮力が作用してボルトが回
転しようとするのを阻止する。リングをかしめた押圧部
は被締付物のたて溝部およびボルト頭部のたて溝部でか
しめられた回り止めリングのかしめ変形が戻るのを防止
し、回り止め効果をより強固にする。メンテナンス時等
にボルトを取外す必要が生じた場合にはかしめた押圧部
を拡開し、ピンおよび回り止めリングを取外して元の状
態に戻すことによって回り止め機構を解除することがで
きる。(Operation) When the bolt tries to turn to the loose side, a compression force acts on the detent ring that is crimped by pressing it with the vertical groove of the tightened object recess and the vertical groove of the bolt head. Prevent the bolt from trying to rotate. The crimping portion of the ring prevents the swaging deformation of the swivel ring swaged by the warp groove of the object to be fastened and the warp groove of the bolt head from returning and further strengthens the swivel stop effect. When it becomes necessary to remove the bolt during maintenance or the like, the detent mechanism can be released by expanding the caulked pressing portion and removing the pin and the detent ring to restore the original state.
(実施例) 第1図から第3図を参照しながら本考案に係るボルトの
回り止め構造体の一実施例を説明する。(Embodiment) An embodiment of a bolt retaining structure according to the present invention will be described with reference to FIGS. 1 to 3.
なお、第1図はボルトを被締付物にねじ込み回り止めを
施した状態を一部側面で示す縦断面図で、第2図は第1
図の上面図、第3図は第1図における回り止めリングの
斜視図である。1 is a vertical cross-sectional view partially showing a side view of a state in which a bolt is screwed into an object to be fastened to prevent it from rotating, and FIG.
FIG. 3 is a top view of the figure, and FIG. 3 is a perspective view of the detent ring in FIG.
第1図において、符号1はねじ穴3を有する固定物であ
り、場合によっては被締付物にもなり得るが、ここでは
説明の都合上固定物と呼ぶ。この固定物1上に被締付物
2を載置しボルト5の頭部5aに穿設されたレンチ挿入用
六角穴13にレンチを挿入してボルト5をねじ込むことで
固着体が一体的に形成される。被締付物2のねじ穴3上
にはボルト5の頭部5aが落し込まれ挿入する凹所4が形
成されている。この凹所の内面には半円状たて溝7が形
成されている。また、ボルト5の頭部5aの側面にも半円
状たて溝8が形成されている。両者のたて溝7,8はボル
ト5を固定物1のねじ穴3にねじ込んだ時点で、丁度、
両溝7,8で円形溝を形成するような位置にそれぞれ設け
られている。そこで、固定物1に被締付物2を載置しボ
ルト5を挿入してねじ込む。凹所4とボルト5の頭部5a
との間には若干の隙間9を生じるようにあらかじめ形成
されてあるので、その隙間9に第3図に示したようなす
り割り10を有する回り止めリング11を挿入する。そし
て、前述した円形溝内にリング11の外側から小円筒状ピ
ン12を叩き込んで押圧し、リング11の側面をボルト頭5a
のたて溝8および凹所4のたて溝7に挿着し被締付物2
と回り止めリング11およびボルト頭部5aとを一体的に固
定する。In FIG. 1, reference numeral 1 is a fixed object having a screw hole 3 and may be a tightened object in some cases, but here it is referred to as a fixed object for convenience of description. The object to be fastened 2 is placed on the fixed object 1, the wrench is inserted into the wrench insertion hexagonal hole 13 formed in the head 5a of the bolt 5, and the bolt 5 is screwed in to integrally fix the fixed body. It is formed. A recess 4 into which the head 5a of the bolt 5 is dropped and inserted is formed on the screw hole 3 of the object 2 to be fastened. A semicircular vertical groove 7 is formed on the inner surface of this recess. A semicircular vertical groove 8 is also formed on the side surface of the head 5a of the bolt 5. The vertical grooves 7 and 8 of the both are just when the bolt 5 is screwed into the screw hole 3 of the fixed object 1,
The grooves 7 and 8 are provided at positions such that a circular groove is formed. Then, the object to be fastened 2 is placed on the fixed object 1, and the bolt 5 is inserted and screwed. Head 4a of recess 4 and bolt 5
Since it is formed in advance so that a slight gap 9 is formed between the and, a detent ring 11 having a slot 10 as shown in FIG. 3 is inserted into the gap 9. Then, the small cylindrical pin 12 is tapped and pressed from the outside of the ring 11 into the circular groove described above, and the side surface of the ring 11 is fixed to the bolt head 5a.
Attached to the vertical groove 8 and the vertical groove 7 of the recess 4 to be fastened
And the detent ring 11 and the bolt head 5a are integrally fixed.
つぎに上記構成のボルトの回り止め構造体の作用につい
て説明する。Next, the operation of the bolt detent structure having the above structure will be described.
ボルト5がゆるみ側に回ろうとすると、被締付物2の凹
所4内の溝7とボルト頭部溝8とにかしめられた回り止
めリング11に圧縮力が作用し、ボルト5が回転しようと
するのを妨げる。ピン12は被締付物の溝7部およびボル
ト頭部溝8部でかしめられた回り止めリング11のかしめ
変形がもどるのを防止し、回り止め効果をより強固にす
る。メンテナンス時等にボルトを取り外す必要が生じた
場合には、ピン12を抜き取り、次に回り止めリング11を
抜き取ることにより回り止め機構を容易に解除すること
ができる。When the bolt 5 tries to rotate toward the loosening side, a compressive force acts on the detent ring 11 crimped into the groove 7 in the recess 4 of the object to be fastened 2 and the bolt head groove 8 to rotate the bolt 5. To prevent The pin 12 prevents the swaging deformation of the swivel stop ring 11 swaged by the groove 7 of the object to be fastened and the bolt head groove 8 from returning and further strengthens the swivel stop effect. When it becomes necessary to remove the bolt during maintenance or the like, the pin 12 is pulled out, and then the detent ring 11 is pulled out, whereby the detent mechanism can be easily released.
なお、本考案は上記実施例に限ることなく、すり割り付
きリングの代りにすり割りなしの円筒状回り止めリング
を使用することができる。The present invention is not limited to the above-mentioned embodiment, and a cylindrical anti-rotation ring without a slot can be used instead of the slot with a slot.
本考案によれば溶接を用いることなく、たて溝、回り止
めリングおよびピンの作用によりボルトの回り止めを行
うことができるため、合金鋼ボルトの回り止めをボルト
の破損・劣化を生じさせずに行え、締造部の信頼性を確
保することができる。また、メンテナンス時等にボルト
を取り外す必要が生じた場合に容易に回り止め機構を解
除できると共に、ボルトを損傷しないことから再使用で
きる。According to the present invention, since the bolt can be prevented from rotating by the action of the vertical groove, the detent ring and the pin without using welding, the detent of the alloy steel bolt does not cause damage or deterioration of the bolt. Therefore, the reliability of the tightened portion can be secured. Further, when it is necessary to remove the bolt during maintenance or the like, the detent mechanism can be easily released and the bolt can be reused because it is not damaged.
第1図は本考案に係るボルトの回り止め構造体の一実施
例を一部側面で示す縦断面図、第2図は第1図の上面
図、第3図は第1図における回り止めリングを示す斜視
図、第4図は従来のボルトの回り止め構造体を一部側面
で示す縦断面図である。 1……固定物、2……被締付物、 3……ねじ穴、4……凹所、 5……ボルト、6……溶接、 7……凹所内たて溝、8……ボルト頭部のたて溝、 9……隙間、10……すり割り、 11……回り止めリング、12……ピン、 13……六角穴。FIG. 1 is a vertical cross-sectional view showing a partial side view of an embodiment of a detent structure for bolts according to the present invention, FIG. 2 is a top view of FIG. 1, and FIG. 3 is a detent ring in FIG. FIG. 4 is a vertical cross-sectional view showing a part of a conventional bolt rotation preventing structure on a side surface. 1 ... Fixed object, 2 ... Tightened object, 3 ... Screw hole, 4 ... Recess, 5 ... Bolt, 6 ... Welding, 7 ... Vertical groove in recess, 8 ... Bolt head Vertical groove, 9 …… Gap, 10 …… Slitting, 11 …… Rotating ring, 12 …… Pin, 13 …… Hexagonal hole.
Claims (1)
トがねじ込まれた際、ボルトの頭部が挿入される凹所を
形成し、かつこの凹所の側面にたて溝を形成するととも
に、ボルトの頭部にもたて溝を形成し、ボルトが被締付
物にねじ込まれた状態でボルトの頭部側面と凹所の内面
との間に回り止めリングを挿着し、前記両たて溝内にピ
ンを挿入し前記回り止めリングの側面の一部を押圧して
かしめ、前記たて溝内に前記ピンを固定して前記被締付
物と回り止めリングおよびボルトの頭部とを一体的に固
定してなることを特徴とするボルトの回り止め構造体。Claim: What is claimed is: 1. When a bolt is screwed into an upper portion of a screw hole formed in an object to be tightened, a recess is formed into which the head of the bolt is inserted, and a vertical groove is formed on a side surface of the recess. In addition to forming it, form a vertical groove in the head of the bolt, and insert the rotation stop ring between the side surface of the head of the bolt and the inner surface of the recess while the bolt is screwed into the object to be tightened. , Inserting pins into the both vertical grooves and pressing a part of the side surface of the anti-rotation ring to caulk, fixing the pins in the vertical grooves to fix the object to be fastened, anti-rotation ring and bolt A bolt rotation preventing structure characterized by being integrally fixed to the head of the bolt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988118852U JPH0638171Y2 (en) | 1988-09-12 | 1988-09-12 | Bolt rotation stop structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988118852U JPH0638171Y2 (en) | 1988-09-12 | 1988-09-12 | Bolt rotation stop structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0240111U JPH0240111U (en) | 1990-03-19 |
JPH0638171Y2 true JPH0638171Y2 (en) | 1994-10-05 |
Family
ID=31363563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988118852U Expired - Lifetime JPH0638171Y2 (en) | 1988-09-12 | 1988-09-12 | Bolt rotation stop structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0638171Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4718726B2 (en) * | 2001-07-04 | 2011-07-06 | 三菱重工業株式会社 | Connecting bolt and rotating shaft connected by the connecting bolt |
-
1988
- 1988-09-12 JP JP1988118852U patent/JPH0638171Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0240111U (en) | 1990-03-19 |
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