JP2003120633A - Looseness preventive screw for set screw - Google Patents

Looseness preventive screw for set screw

Info

Publication number
JP2003120633A
JP2003120633A JP2001314483A JP2001314483A JP2003120633A JP 2003120633 A JP2003120633 A JP 2003120633A JP 2001314483 A JP2001314483 A JP 2001314483A JP 2001314483 A JP2001314483 A JP 2001314483A JP 2003120633 A JP2003120633 A JP 2003120633A
Authority
JP
Japan
Prior art keywords
screw
peripheral surface
set screw
loosening prevention
inclined peripheral
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.)
Pending
Application number
JP2001314483A
Other languages
Japanese (ja)
Inventor
Hiroyori Nakasuji
広順 中筋
Yuji Kitagawa
裕士 北川
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.)
Nuclear Fuel Industries Ltd
Original Assignee
Nuclear Fuel Industries 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 Nuclear Fuel Industries Ltd filed Critical Nuclear Fuel Industries Ltd
Priority to JP2001314483A priority Critical patent/JP2003120633A/en
Publication of JP2003120633A publication Critical patent/JP2003120633A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To epochally improve a defect of suffering for even disassembling- assembling thereafter by adopting a special looseness preventive screw because of lacking in an effect in a means for preventing looseness by applying an adhesive after fastening a set screw threadedly engaged with an installing screw hole of a flange to a shaft when fixing the shaft and a flange. SOLUTION: After fixing one member B to the other part A by threadedly engaging and fastening the set screw 11 with and to the installing screw hole 1, a looseness preventive screw body 12A is also threadedly engaged. A protrusive part 12c with a base end side abutting inclined peripheral surface 12d formed at an equal chamfer angle α is protrusively arranged with the axis Y2 eccentric from the axis Y1 of the looseness preventive screw body to a conical receiving-supporting inclined peripheral surface 11d applied at the chamfer angle α tapering in the depth direction in an axial inlet part of a head part side threadedly rotating port 11b in the set screw 11. A base end side abutting inclined peripheral surface 12d of the protrusive part 12c for eccentrically rotating the looseness preventive screw body 12A freely abuts and stops to the conical receiving-supporting inclined peripheral surface 11d in a line contact state, and generates large frictional force against the looseness.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は軸のような一部品
に、フランジ等の他部品を被嵌させ、フランジ等に貫設
の取着用螺孔に螺入させた止めねじによって、一部品に
対し他部品を固定した際、当該施工済の止めねじが振動
などによって緩んでしまうことを防止するため、上記取
着用螺孔に施して用いる止めねじ用の緩み防止ねじに関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single component such as a shaft by fitting another component such as a flange and screwing it into a mounting screw hole formed through the flange. On the other hand, the present invention relates to a loosening prevention screw for a set screw, which is used by applying to the attachment screw hole, in order to prevent the set screw that has been installed from loosening due to vibration when fixing other parts.

【0002】[0002]

【従来の技術】図3に例示の如く軸1に対して、被嵌し
たフランジ2を固定するには、フランジ2に貫設した取
着用螺孔2aに、六角穴3aを備えた止めねじ3を螺合
させ、図示されていない六角棒スパナを六角穴3aに係
嵌して螺回することにより、止めねじ3の先行締着端部
3bを軸1に締め付けるようにしている。従って上記の
止めねじ3によるときは、先行締着端部3bと軸1にお
ける当たり面1aでの摩擦力と、止めねじ3の締め付け
により発生する軸力に基づいて、取着用螺孔2aの雌ね
じ部2bと止めねじ3の雄ねじ部3cとの間に生ずる摩
擦力とによって、緩み方向への止めねじ3の回転が抑制
されていることになる。
2. Description of the Related Art As shown in FIG. 3, in order to fix a fitted flange 2 to a shaft 1, a set screw 3 having a hexagonal hole 3a in a mounting screw hole 2a penetrating the flange 2 is provided. The hexagonal bar spanner (not shown) is engaged with the hexagonal hole 3a and screwed, so that the preceding fastening end portion 3b of the set screw 3 is fastened to the shaft 1. Therefore, when the set screw 3 is used, the internal thread of the attachment screw hole 2a is based on the frictional force between the preceding fastening end portion 3b and the contact surface 1a of the shaft 1 and the axial force generated by the tightening of the set screw 3. The frictional force generated between the portion 2b and the male screw portion 3c of the set screw 3 suppresses the rotation of the set screw 3 in the loosening direction.

【0003】しかし上記の止めねじ3によるときは、既
知の通り各種の機器から生ずる振動に基づき、前記した
摩擦力が増減変更することで止めねじ3が不本意に弛緩
してしまうことがある。そこで当該弛緩の絶滅を図る目
的で、既に実施されている手段としては 、上記した止
めねじ3の雄ねじ部3cとフランジ2の雄ねじ部3cと
に接着剤を塗布することが実施されているが、当該手段
によるときは、接着剤による固着強度が弱いときは止め
ねじ3の緩み防止効果が薄弱となり、これを是正できる
強力な接着剤を使用した場合には、当該止めねじ3を取
り外して軸1とフランジ2とを分解することが実質的に
不能となったり、分解作業やその組立作業に難渋すると
いった欠陥を解消することができない。
However, when the set screw 3 is used, the set screw 3 may be unintentionally loosened due to the increase or decrease of the above-mentioned frictional force based on the vibration generated from various devices as is known. Therefore, for the purpose of extinguishing the relaxation, as an already-implemented means, an adhesive is applied to the male screw portion 3c of the set screw 3 and the male screw portion 3c of the flange 2 as described above. According to the means, when the fixing strength by the adhesive is weak, the loosening prevention effect of the set screw 3 becomes weak. When a strong adhesive that can correct this is used, the set screw 3 is removed and the shaft 1 is removed. It is impossible to eliminate the defects that the disassembly of the flange 2 and the flange 2 is substantially impossible, and the disassembly work and the assembly work thereof are difficult.

【0004】[0004]

【発明が解決しようとする課題】本発明では上記従来の
止めねじが有している緩み防止手段の欠陥に鑑み検討さ
れたもので、上記した止めねじ3の不本意な弛緩回動を
接着剤の施工によって阻止しようとするのではなしに、
請求項1にあっては止めねじを螺合締着した取着用螺孔
に対して、緩み防止ねじを別途重装螺嵌させることにな
るが、この際予め止めねじの前記六角穴3a等である頭
部側螺回用口の軸心入口部にあって、所定の面取り角度
にて形成したすり鉢状受承傾斜周面なるものを形成して
おくのである。
SUMMARY OF THE INVENTION The present invention has been studied in view of the deficiency of the loosening prevention means of the above-mentioned conventional set screw, and an adhesive agent is used to prevent the undesired loose rotation of the set screw 3 described above. Instead of trying to prevent it by the construction of
In the first aspect, the loosening prevention screw is separately heavy-fitted into the attachment screw hole into which the set screw is screwed and fastened. At this time, the hexagonal hole 3a of the set screw or the like is previously used. A mortar-shaped receiving inclined peripheral surface formed at a predetermined chamfering angle is formed at the axial center inlet portion of a certain head side screw opening.

【0005】そして、本発明に係る上記緩み防止ねじに
は、上記のすり鉢状受承傾斜周面と同等の面取り角度に
して、かつ偏心位置に基端側接触周面の形成された突起
部を設けておき、当該緩み防止ねじの前記した取着用螺
孔への回動螺嵌によって、突起部を止めねじの頭部側螺
回用口へ突入させて行くのであり、かくして当該突起部
の偏心した基端側接触周面が、止めねじのすり鉢状受承
傾斜周面に対し線接触状態にて当接停止され得るよう構
成するのである。
The loosening prevention screw according to the present invention is provided with a protrusion having a chamfering angle equivalent to that of the mortar-shaped receiving inclined peripheral surface and having a base end side contact peripheral surface at an eccentric position. By providing the loosening prevention screw by rotationally fitting the loosening prevention screw into the attachment screw hole, the protrusion is pushed into the head side screw opening of the set screw, and thus the eccentricity of the protrusion is concerned. The base end side contact peripheral surface is configured so that it can be stopped in line contact with the mortar-shaped receiving inclined peripheral surface of the set screw.

【0006】本発明は上記のようにして、前記の面取り
角度をもって軸線と傾斜した線接触状態の得られる締め
付けを実現されるようにし、これにより軸線方向への緩
み防止ねじによる押圧力(軸力)を止めねじが受け、当
該押圧力に基づく反力を緩み防止ねじが、止めねじによ
って逆向きに受けることで、両ねじ間に大きな摩擦力を
生じさせ得るようにしている。さらに本発明では、軸線
と直交する方向にあっても、これまた双方のねじが逆向
きに大きな押し付け力と反力を受けるようにし、ここで
も同様に大きな摩擦力の発生を可能とし、この結果上説
した二つの摩擦力の総和により、止めねじおよび緩み防
止ねじの緩みが極めて高い信頼性をもって防止できるよ
うにし、従来の接着剤塗布手段に比し、固定強度だけで
なく部品の分解そして再組立をも容易に実施可能にしよ
うとするのが、その目的である。
As described above, the present invention realizes the tightening in which the line contact state inclined with the axis is obtained with the above chamfer angle, whereby the pressing force (axial force) by the loosening prevention screw in the axial direction is achieved. ) Is received by the set screw, and the loosening prevention screw receives the reaction force based on the pressing force in the opposite direction by the set screw, so that a large frictional force can be generated between the two screws. Further, in the present invention, even in the direction orthogonal to the axis, both screws are also subjected to a large pressing force and reaction force in opposite directions, and similarly, a large frictional force can be generated. The sum of the two frictional forces mentioned above makes it possible to prevent loosening of the set screw and the loosening prevention screw with extremely high reliability, and not only the fixing strength but also the disassembly and re-assembly of parts as compared with the conventional adhesive application means. The aim is to make the assembly also feasible.

【0007】そして請求項2にあっては、上記請求項1
において緩み防止ねじ本体の突起部を、基端側接触周面
とその先端側に連設の球面取りされている球面部とによ
り円錐状に形成することで、緩み防止ねじの取着用螺孔
に対する螺合締着に際して、突起部が止めねじの頭部側
螺回用口内へ支障なく進入することを保証し、もって請
求項1の前記した目的を確実に達成しようとしている。
According to Claim 2, the above Claim 1
In the above, by forming the protrusion of the loosening prevention screw main body into a conical shape by the base end side contact peripheral surface and the spherical surface portion continuously provided on the tip side thereof, the loosening prevention screw is attached to the attachment screw hole. At the time of tightening by screwing, it is ensured that the protrusion enters into the head side screwing opening of the set screw without any trouble, so that the above-mentioned object of claim 1 is surely achieved.

【0008】[0008]

【課題を解決するための手段】本発明は、上記の目的を
達成するため一部品に固定すべき他部品の取着用螺孔に
は、頭部側螺回用口に係嵌した回動用具の回動により、
先行締着端部が上記の一部品に締め付け自在である止め
ねじに対して、同上取付用螺孔に頂部側螺回用部への回
動用具による回動力付与により締め付け自在とした緩み
防止ねじであり、その緩み防止ねじ本体における上記の
止めねじ側には、この止めねじにおける前記頭部側螺回
用口の軸心入口部にあって、奥行に向け先細りとなるよ
う所定の面取り角度で施工されたすり鉢状受承傾斜周面
に対して、同等の面取り角度で形成の基端側当接傾斜周
面を有する突起部が、緩み防止ねじ本体の軸心から偏心
した軸心をもって隆設され、前記した緩み防止ねじ本体
の回動用具により偏心回動する突起部の基端側当接傾斜
周面が、止めねじの前記したすり鉢状受承傾斜周面に対
し線接触状態にて当接停止自在となるようにしたことを
特徴とする止めねじ用の緩み防止ねじを提供しようとし
ている。
SUMMARY OF THE INVENTION According to the present invention, in order to achieve the above-mentioned object, a turning tool which is engaged with a head side screw opening is attached to a mounting screw hole of another part which should be fixed to one part. Rotation of
Anti-loosening screw that can be tightened by applying turning force to the top screwing part in the mounting screw hole by a turning tool to the set screw whose preceding tightening end can be tightened to the above-mentioned one component. And, on the set screw side of the loosening prevention screw body, at a predetermined chamfering angle so as to taper toward the depth at the axial center inlet part of the head side screw opening of the set screw. A protrusion having a base end side contact inclined peripheral surface formed at the same chamfer angle with respect to the mortar-shaped receiving inclined peripheral surface that is constructed is raised with an axis eccentric from the axis of the loosening prevention screw body. The inclined peripheral surface of the base end side of the protruding portion that is eccentrically rotated by the rotation tool of the loosening prevention screw body is in line contact with the inclined peripheral surface of the mortar-shaped receiving screw of the set screw. A stop characterized by being able to stop and contact We are trying to provide an anti-loosening screws of use.

【0009】そして請求項2にあっては、上記の請求項
1に係る止めねじ用の緩み防止ねじにおいて緩み防止ね
じ本体に形成された突起部は、基端側接触傾斜周面と、
その先端側に球面取りして連設された球面部とにより円
錐状に形成されていることを、その内容としている。
According to a second aspect of the present invention, in the loosening prevention screw for a set screw according to the first aspect, the protrusion formed on the loosening prevention screw body has a base end side contact inclined peripheral surface,
The content is that it is formed in a conical shape with a spherical surface portion that is continuously formed by taking a spherical surface on the tip side.

【0010】[0010]

【発明の実施の形態】本発明について図1と図2を参照
して以下詳記すると、図1には軸等である一部品Aに、
フランジ等としての他部品Bを被嵌し、当該他部品Bに
貫設した取着用螺孔10に対して順次止めねじ11、そ
して本発明に係る緩み防止ねじ12を螺合する一実施態
様が開示されている。先行して取着用螺孔10に螺合す
ることになる止めねじ11につきまず説示すると、図2
(A)の如く外周止め螺部11aと、既知の六角穴等の
如く六角棒スパナなどの回動用具を係嵌して回動の用に
供される頭部側螺回用口11bと、その反対側に形成さ
れた平面状の先行締着端部11cとを具有している。そ
して、さらに上記の頭部側螺回用口11bの軸心入口部
にあって、奥行きすなわち上記の先行締着端部11c側
へ向け先細りとなるように、所定の面取り角度αで施工
されたすり鉢状受承傾斜周面11dを形成しておくこと
になる。
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail with reference to FIGS. 1 and 2. In FIG.
An embodiment in which another component B as a flange or the like is fitted and a set screw 11 and a loosening prevention screw 12 according to the present invention are sequentially screwed into a mounting screw hole 10 penetrating the other component B is provided. It is disclosed. First, the set screw 11 to be screwed into the attachment screw hole 10 will be explained first.
As shown in (A), an outer peripheral set screw portion 11a, and a head side screw opening 11b which is used for turning by engaging a turning tool such as a hexagonal bar wrench like a known hexagonal hole, It has a flat leading fastening end portion 11c formed on the opposite side thereof. Further, at the shaft center inlet portion of the head side screwing port 11b, it is constructed at a predetermined chamfering angle α so as to be tapered toward the depth, that is, the side of the preceding fastening end 11c. The mortar-shaped receiving inclined peripheral surface 11d is formed.

【0011】そして、上記した止めねじ11は既知の通
り、他部品Bの取着用螺孔10に対して、頭部側螺回用
口11bに係嵌した回動用具の回動により、その先行締
着端部11cが前記の一部品Aにおける外面部aに締め
付け自在であり、これにより一部品Aと他部品Bとが固
定状態となる。そこで、この固定状態の後、同じく取着
用螺孔10に螺合することになる止めねじ12につき、
これまた図1と図2の(A)(B)を参照して以下説示
する。緩み防止ねじ12にあって、その緩みねじ本体1
2Aには、外周緩み防止螺部12aと、既知の六角穴等
の如く回動用具を係嵌するとか、図示されていないが角
柱状突部を設けるなどして形成した適宜構成の頂部側螺
回用部12bと、その反対である、前記の止めねじ11
側に形成された突起部12cとを具有している。
As is well known, the set screw 11 is preceded by the turning tool engaged with the head side screw opening 11b with respect to the attachment screw hole 10 of the other component B. The fastening end portion 11c can be fastened to the outer surface portion a of the one component A so that the one component A and the other component B are fixed. Therefore, after this fixed state, the set screw 12 that will also be screwed into the attachment screw hole 10,
This will also be described below with reference to FIGS. 1 and 2A and 2B. The loosening prevention screw 12 has a loosening screw body 1
The outer peripheral loosening prevention screw portion 12a and a turning tool such as a known hexagonal hole are engaged with 2A, or a top side screw screw having an appropriate structure formed by providing a prismatic protrusion (not shown). The turning portion 12b and the opposite set screw 11
It has a protrusion 12c formed on the side.

【0012】上記の突起部12cにあっては、前説した
すり鉢状受承傾斜周面11dと同等の面取り角度αで形
成された基端側当接傾斜周面12dが設けられている
が、この基端側当接傾斜周面12dなるものは、緩み防
止ねじ本体12Aの軸線Y1から所要長dだけ偏心した
突起部の軸心Y2をもって隆設されている。従って、前
記の如く緩み防止ねじ12を回動用具による螺回によ
り、取着用螺孔10に螺合させて行くことで、緩み防止
ねじ本体12Aにおける突起部12cの偏心回動によっ
て、基端側当接傾斜周面12dが、止めねじ11の前記
したすり鉢状受承傾斜周面11dに対して、全面的に接
触するのではなしに線接触状態にて当接停止することに
なり、ここで図1にあってLFは当該線接触箇所を指示
している。
In the above-mentioned projection 12c, there is provided a base end side contact inclined peripheral surface 12d formed with a chamfering angle α equivalent to that of the mortar-shaped receiving inclined peripheral surface 11d described above. The abutment inclined peripheral surface 12d on the base end side is elevated with an axis Y2 of a protrusion eccentric from the axis Y1 of the loosening prevention screw body 12A by a required length d. Therefore, as described above, by screwing the loosening prevention screw 12 into the attachment screw hole 10 by screwing with the turning tool, the eccentric rotation of the protrusion 12c in the loosening prevention screw body 12A causes the proximal end side. The abutting inclined peripheral surface 12d does not contact the entire mortar-shaped receiving inclined peripheral surface 11d of the set screw 11, but stops contacting in a line contact state. 1, the LF indicates the line contact point.

【0013】請求項1に係る緩み防止ねじ12は上記の
如く構成されていることから、図1により理解される通
り突起部12cが、前記の如く緩み防止ねじ本体12A
の軸心Y1から偏心しているので、止めねじ11のすり
鉢状受承傾斜周面11dに対して均等に当接せず、偏心
している側のみが線接触することになる。しかも、この
際面取り角度αをもって、基端側当接傾斜周面12dと
すり鉢状受承傾斜周面11dとの両面が形成されている
ことから、緩み防止ねじ12の上記した締め付けによ
り、同図にあって軸方向である下向きの軸力Pに対し、
その反力である上向きの軸力が発生するだけでなく、当
該軸方向と直交状である横方向の外向力Fに対し、その
反力である横方向の内向力Fが生ずることとなる。
Since the loosening prevention screw 12 according to claim 1 is configured as described above, the protrusion 12c has the loosening prevention screw main body 12A as described above as understood from FIG.
Since it is eccentric from the center Y1 of the axis, it does not evenly contact the mortar-shaped receiving inclined peripheral surface 11d of the set screw 11, and only the eccentric side makes line contact. Moreover, at this time, since both sides of the base end side contact inclined peripheral surface 12d and the mortar-shaped receiving inclined peripheral surface 11d are formed with the chamfering angle α, by the above-mentioned tightening of the loosening prevention screw 12, the same figure is used. For the downward axial force P that is in the axial direction,
Not only the upward axial force that is the reaction force is generated, but also the lateral inward force F that is the reaction force is generated with respect to the lateral outward force F that is orthogonal to the axial direction.

【0014】従って当該発明によるときは、上記した下
向きの軸力Pによって止めねじ11における外周止め螺
部11aが、図1にあって下向きに押さえ込まれ、緩み
防止ねじ12における外周緩み防止螺部は上向きに押圧
され、従って逆向である軸力(押さえ力)による大きな
摩擦力により、止めねじ11と緩み防止ねじ12との不
本意な緩みが阻止されることになる。このような緩み防
止の効用は、別途知られているナットの緩み防止手法に
おけるダブルナットに対比してみると、もちろんその構
成は異質であるものの同等の効果内容として評価するこ
とができる。
Therefore, according to the present invention, the outer peripheral set screw portion 11a of the set screw 11 is pressed downward in FIG. 1 by the above-mentioned downward axial force P, and the outer peripheral loosening preventive screw portion of the loosening prevention screw 12 becomes Undesired loosening of the set screw 11 and the loosening prevention screw 12 is prevented by a large frictional force due to the axial force (pressing force) that is pressed upward and is in the opposite direction. The effect of such loosening prevention can be evaluated as an equivalent effect content although the structure is different, as compared with the double nut in the separately known nut loosening prevention method.

【0015】しかし、本発明では上記の如き摩擦力に基
づく効果だけでなく、前記の如く横方向である互いに逆
向きの外向力Fと内向力Fとである大きな押し付け力が
作用し合うことになることから、前説の取着用螺孔10
に対して、横方向からも外周止め螺部11aと外周緩み
防止螺部12aとによる作用力が加わり、このことによ
っても大きな摩擦力が得られることになる。この結果前
記した逆向きである上向き、下向きの軸力P、Pに基づ
く摩擦力だけでなく、これまた逆向きである横向きの外
向力Fと内向力Fとに基づく摩擦力も付加され、当該両
摩擦力の総和によって、緩み防止の機能を最大限に発揮
し得ることになる。
However, in the present invention, not only the effect based on the frictional force as described above, but also a large pressing force, that is, the outward force F and the inward force F, which are laterally opposite to each other as described above, act on each other. Therefore, the attachment screw hole 10 described in the above
On the other hand, the action force of the outer peripheral stop screw portion 11a and the outer peripheral loosening prevention screw portion 12a is also applied from the lateral direction, so that a large frictional force can be obtained. As a result, not only the frictional force based on the above-mentioned opposite upward and downward axial forces P, P, but also the frictional force based on the opposite outward lateral force F and inward force F are added. The total frictional force can maximize the function of preventing loosening.

【0016】次いで請求項1の一実施態様を示す請求項
2について説示すると、ここでは前記の如く請求項1に
係る基端側当接傾斜周面12dのみによって突起部12
dを形成することなく、当該基端側当接傾斜周面12d
と、その先端側にあって球面取りして連設された球面部
12eとによって、全面を円錐状に形成するようにして
いる。このように基端側当接傾斜周面12dに球面部1
2eを連装突設するようにしたことから、緩み防止ねじ
12をねじ込んで行く際、突起部12cの回動に際し、
球面部12eと衝当してしまうものがなく、従って緩み
防止ねじ12の円滑なる回動を常に保証し得ることにな
り、請求項1の前記した作用を阻害することなく所期の
目的を円滑に達成し得ることになる。
Next, the claim 2 showing one embodiment of the claim 1 will be explained. Here, as described above, the protrusion 12 is formed only by the base end side contact inclined peripheral surface 12d according to claim 1.
12d without forming d
The entire surface is formed into a conical shape by the spherical surface portion 12e which is provided on the tip side of the spherical surface and is continuously formed by taking a spherical surface. In this way, the spherical portion 1
Since the 2e is provided in a protruding manner, when the loosening prevention screw 12 is screwed in, the protrusion 12c is rotated,
There is nothing that hits the spherical surface portion 12e, so that the smooth rotation of the loosening prevention screw 12 can always be guaranteed, and the intended purpose can be smoothed without hindering the above-described operation of claim 1. Can be achieved.

【0017】[0017]

【発明の効果】本発明は以上のようにして構成されてい
ることから請求項1による止めねじ用の緩み防止ねじに
よるときは、一部品を固定するのに一部品の取着用螺孔
に、止めねじを螺合締着するだけでなく、別途用意した
緩み防止ねじを螺合して、これを止めねじに対して締め
付けることができる。しかもこの際、止めねじに形成し
たすり鉢状受承傾斜周面に対して、緩み防止ねじの偏心
させた突起部における基端側当接傾斜周面が、線接触状
態となるよう当接停止させ得ることになる。
Since the present invention is constituted as described above, when the loosening prevention screw for the set screw according to claim 1 is used, the one part is fixed to the attachment screw hole for fixing the one part. Not only the set screw can be screwed and tightened, but also a loosening prevention screw prepared separately can be screwed and tightened to the set screw. In addition, at this time, the base end side contacting inclined peripheral surface of the eccentric protrusion of the loosening prevention screw is brought into line contact with the mortar-shaped receiving inclined peripheral surface formed on the set screw to stop the contact. You will get it.

【0018】この結果上記の締め付けにより、止めねじ
と緩み防止ねじとの間にあって相互に相反する方向への
押圧力が作用し合うと共に、軸力と直交する方向にあっ
ても止めねじと緩み防止ねじ間にあって、これまた相反
する方向への押圧力が作用し合うことになる。この結果
ダブルナットによる緩み防止手段に比し遙かに大きな総
和的な摩擦力が発揮可能となることから、従来の接着剤
塗布手段によるものに比し緩み防止に絶大な効果がある
だけでなく、高強度接着剤を用いた場合よりも、一部品
と他部品との分解そして組立作業が簡易かつ迅速に行い
得ることとなる。さらに請求項2の如く緩み防止ねじの
突起部を、前記した基端側当接傾斜周面と、これに連設
の球面部とによって円錐状に形成すれば、緩み防止ねじ
の螺回を支障なく円滑に行うことができ、当該緩み防止
ねじの信頼性を、より向上することができる。
As a result, due to the above-mentioned tightening, the pressing forces in the directions opposite to each other act between the set screw and the loosening prevention screw, and even in the direction orthogonal to the axial force, the set screw and the loosening prevention screw are prevented. Between the screws, the pressing forces in the opposite directions act on each other. As a result, it is possible to exert a far greater total frictional force than the loosening prevention means by the double nut, so not only is there a great effect in preventing the loosening as compared with the conventional adhesive application means. As compared with the case where the high-strength adhesive is used, the disassembling and assembling work of one component and the other component can be performed easily and quickly. Further, when the protrusion portion of the loosening prevention screw is formed in a conical shape by the base end side contact inclined peripheral surface and the spherical portion continuous with this, the screwing of the loosening prevention screw is hindered. Without doing so, the loosening prevention screw can be further improved in reliability.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る止めねじ用緩み防止ねじにより、
一部品と他部品とを固定状態としたときの一部縦断正面
図である。
FIG. 1 is a view showing a loosening prevention screw for a set screw according to the present invention.
It is a partially longitudinal front view when one component and another component are fixed.

【図2】(A)は上記の止めねじと緩み防止ねじとの相
互関係を示した縦断正面説明図で、(B)は同上緩み防
止ねじの縦断右側面図である。
FIG. 2A is a vertical sectional front view showing the mutual relationship between the set screw and the loosening prevention screw, and FIG. 2B is a vertical sectional right side view of the same loosening prevention screw.

【図3】従来の止めねじを示し、(A)はその平面図、
(B)は使用状態における要部縦断正面図である。
FIG. 3 shows a conventional set screw, (A) is a plan view thereof,
(B) is a vertical sectional front view of a main part in a use state.

【符号の説明】[Explanation of symbols]

10 取着用螺孔 11 止めねじ 11b 頭部側螺回用口 11c 先行締着端部 11d すり鉢状受承傾斜周面 12 緩み防止ねじ 12A 緩み防止ねじ本体 12b 頂部側螺回用部 12c 突起部 12d 基端側当接傾斜周面 12e 球面部 A 一部品 B 他部品 LF 線接触箇所 α 面取り角度 10 Mounting screw holes 11 Set screw 11b Head side screw opening 11c Leading fastening end 11d Mortar-shaped receiving inclined peripheral surface 12 Loosening prevention screw 12A Loosening prevention screw body 12b Top side screwing part 12c protrusion 12d Base end side contact inclined peripheral surface 12e spherical surface A one part B Other parts LF line contact point α chamfer angle

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 一部品に固定すべき他部品の取着用螺孔
には、頭部側螺回用口に係嵌した回動用具の回動によ
り、先行締着端部が上記の一部品に締め付け自在である
止めねじに対して、同上取付用螺孔に頂部側螺回用部へ
の回動用具による回動力付与により締め付け自在とした
緩み防止ねじであり、その緩み防止ねじ本体における上
記の止めねじ側には、この止めねじにおける前記頭部側
螺回用口の軸心入口部にあって、奥行に向け先細りとな
るよう所定の面取り角度で施工されたすり鉢状受承傾斜
周面に対して、同等の面取り角度で形成の基端側当接傾
斜周面を有する突起部が、緩み防止ねじ本体の軸心から
偏心した軸心をもって隆設され、前記した緩み防止ねじ
本体の回動用具により偏心回動する突起部の基端側当接
傾斜周面が、止めねじの前記したすり鉢状受承傾斜周面
に対し線接触状態にて当接停止自在となるようにしたこ
とを特徴とする止めねじ用の緩み防止ねじ。
1. The preceding fastening end portion is formed in the attachment screw hole of another component to be fixed to the one component by the rotation of a rotation tool engaged with the head side screwing opening. In contrast to the set screw that can be tightened freely, it is a loosening prevention screw that can be tightened by applying a turning force to the top side screwing portion by a turning tool to the mounting screw hole. On the set screw side, there is a mortar-shaped sloping peripheral surface at the axial inlet of the head side screw opening of this set screw, which is constructed at a predetermined chamfer angle so as to taper toward the depth. On the other hand, the protrusion having the proximal contact side inclined peripheral surface formed at the same chamfering angle is raised with an axis eccentric from the axis of the loosening prevention screw body, and The base end side contact inclined peripheral surface of the protrusion that is eccentrically rotated by the moving tool is a set screw. 2. A loosening prevention screw for a set screw, which is capable of abutting and stopping freely in a line contact state with the above-mentioned mortar-shaped inclined inclined peripheral surface.
【請求項2】 緩み防止ねじ本体に形成された突起部
は、基端側接触傾斜周面と、その先端側に球面取りして
連設された球面部とにより円錐状に形成されている請求
項1に記載の止めねじ用の緩み防止ねじ。
2. The protrusion formed on the loosening prevention screw main body is formed in a conical shape by a base end side contact inclined peripheral surface and a spherical surface portion continuously provided on the tip end side by taking a spherical surface. A loosening prevention screw for a set screw according to Item 1.
JP2001314483A 2001-10-11 2001-10-11 Looseness preventive screw for set screw Pending JP2003120633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001314483A JP2003120633A (en) 2001-10-11 2001-10-11 Looseness preventive screw for set screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001314483A JP2003120633A (en) 2001-10-11 2001-10-11 Looseness preventive screw for set screw

Publications (1)

Publication Number Publication Date
JP2003120633A true JP2003120633A (en) 2003-04-23

Family

ID=19132793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001314483A Pending JP2003120633A (en) 2001-10-11 2001-10-11 Looseness preventive screw for set screw

Country Status (1)

Country Link
JP (1) JP2003120633A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024252A1 (en) * 2003-09-01 2005-03-17 Hard Lock Industry Co., Ltd. Lock bolt device
JP2012110922A (en) * 2010-11-24 2012-06-14 Jatco Ltd Mold structure
JP2014141881A (en) * 2014-05-14 2014-08-07 License & Property Control:Kk Underground structure housing
EP3278693A1 (en) * 2016-08-01 2018-02-07 TIF GmbH Fitting for a sliding door
CN114867947A (en) * 2019-12-20 2022-08-05 哈得螺克工业株式会社 Anti-loosening device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024252A1 (en) * 2003-09-01 2005-03-17 Hard Lock Industry Co., Ltd. Lock bolt device
JP2012110922A (en) * 2010-11-24 2012-06-14 Jatco Ltd Mold structure
JP2014141881A (en) * 2014-05-14 2014-08-07 License & Property Control:Kk Underground structure housing
EP3278693A1 (en) * 2016-08-01 2018-02-07 TIF GmbH Fitting for a sliding door
CN114867947A (en) * 2019-12-20 2022-08-05 哈得螺克工业株式会社 Anti-loosening device
EP4080071A4 (en) * 2019-12-20 2024-01-10 Hardlock Ind Co Ltd Loosening prevention device

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