JPH0786368B2 - Tightening part loosening prevention device - Google Patents

Tightening part loosening prevention device

Info

Publication number
JPH0786368B2
JPH0786368B2 JP1218655A JP21865589A JPH0786368B2 JP H0786368 B2 JPH0786368 B2 JP H0786368B2 JP 1218655 A JP1218655 A JP 1218655A JP 21865589 A JP21865589 A JP 21865589A JP H0786368 B2 JPH0786368 B2 JP H0786368B2
Authority
JP
Japan
Prior art keywords
tightening
axial force
wedge
wedge member
movable
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
Application number
JP1218655A
Other languages
Japanese (ja)
Other versions
JPH0384208A (en
Inventor
秀昭 菊地
Original Assignee
旭電機株式会社
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 旭電機株式会社 filed Critical 旭電機株式会社
Priority to JP1218655A priority Critical patent/JPH0786368B2/en
Publication of JPH0384208A publication Critical patent/JPH0384208A/en
Publication of JPH0786368B2 publication Critical patent/JPH0786368B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Bolts, Nuts, And Washers (AREA)

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は締付部緩み防止装置に関するものである。TECHNICAL FIELD The present invention relates to a tightening portion loosening prevention device.

[従来の技術] 一般に締付部にあっては、直接ボルト、ナットによって
締付けられるか、あるいは、ボルト、ナット等の締付部
材により押圧される間接部材を介して締め付けられるも
のが多い。
[Prior Art] In general, a tightening portion is often tightened directly by a bolt or nut, or by an indirect member pressed by a tightening member such as a bolt or a nut.

このような場合、被締付部材の剛性が高い場合には、ボ
ルト、ナットあるいは被締付部材を押圧している間接部
材等のために、座面がわずかではあるが陥没したり(塗
装被膜のつぶれも含めて)、若しくは、微細な凹凸部の
つぶれや変形により、又は、ねじ部のへたりによって、
締付軸力は著しく低下する。
In such a case, when the rigidity of the member to be tightened is high, the seat surface may be slightly depressed due to the bolts, nuts or indirect members pressing the member to be tightened (painted film). (Including crushing), or due to crushing or deformation of minute uneven parts, or due to settling of the screw part,
The tightening axial force is significantly reduced.

また、このようにして締付軸力が低下したり、あるい
は、それと共に振動等によって、締付部材が回転して緩
むこともある。
Further, the tightening axial force may decrease in this way, or the tightening member may rotate and loosen due to vibration or the like.

従来は、このような締付軸力の低下又は回転方向の緩み
の発生を防止するために、第10図に示すように、被締付
部材(1)とボルト(2)の頭部との間にブッシュ
(3)を嵌装したり、若しくは、ダブルナットにした
り、又は、皿ばね、皿ばね座金等を併用する等の手段が
とられていた。
Conventionally, in order to prevent such a decrease in tightening axial force or the occurrence of loosening in the rotating direction, as shown in FIG. 10, the member to be tightened (1) and the head of the bolt (2) are A bush (3) is fitted between them, a double nut is used, or a disc spring, a disc spring washer, and the like are used together.

しかし、これらは、十分な緩み止めは期待し得ず、緩み
が生じた場合には、増し締めが必要となる。
However, they cannot be expected to be sufficiently loosened, and if loosening occurs, retightening is required.

また、締付軸力を超える外力が被締付部材にかかった場
合には、被締付部材相互間の浮き上りが大きくなり、特
に、両者間の摩擦結合を期待する場合には不利となる。
Further, when an external force exceeding the tightening axial force is applied to the members to be tightened, the floating between the members to be tightened becomes large, which is disadvantageous particularly when frictional coupling between them is expected. .

[発明が解決しようとする課題] 従来の締付部緩み防止は、上記のような手段がとられて
いたが、回転の緩みはある程度防止することができて
も、上記の原因による締付軸力の低下を防止することは
できなかった。また、この締付軸力の低下と共に振動を
うける場合には、回転の緩みも生じ、従って、このよう
な締付軸力の低下や回転の緩みはそのまま残り、積極的
に増し締めを行なわない限り、締付軸力の低下やさらな
る回転による緩みを招き、事故の誘因になるという問題
点を有していた。
[Problems to be Solved by the Invention] The conventional means for preventing loosening of a tightening portion has been described above. However, even if the looseness of rotation can be prevented to some extent, the tightening shaft due to the above causes. It was not possible to prevent the decline in power. In addition, when the tightening axial force is reduced and vibration is received, the rotation is loosened. Therefore, such a decrease in the tightening axial force and the looseness of the rotation remain as they are, and the positive tightening is not performed. As far as possible, there is a problem in that the tightening axial force is reduced and loosening due to further rotation causes an accident.

この発明は、上記の課題を解決するためになされたもの
で、締付軸力の低下や回転の緩みの発生を防止すると共
に、それらが発生した場合に、増し締めを行わなくても
締付軸力の低下を常時即座に補償することのできる締付
部緩み防止装置を提供することを目的とする。
The present invention has been made to solve the above-mentioned problems, and prevents a decrease in tightening axial force and the occurrence of loosening of rotation, and when they occur, tightening without re-tightening. An object of the present invention is to provide a tightening portion loosening prevention device that can always immediately and promptly compensate for a decrease in axial force.

[課題を解決するための手段] 上記目的を達成するために、この発明は、締付部材と被
締付部材との間に、互いに逆方向に傾斜する楔面を有す
る固定楔部材と可動楔部材とを介在させた締付部緩み防
止装置において、前記可動楔部材と固定部分または他の
締付部材の可動楔部材との間に介在する弾性部材によ
り、その可動楔部材が傾斜に抗して移動する方向に常時
付勢されているものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention provides a fixed wedge member and a movable wedge having wedge surfaces inclined in opposite directions between a tightening member and a tightened member. In the tightening portion loosening prevention device including a member, an elastic member interposed between the movable wedge member and the movable wedge member of the fixed portion or another tightening member prevents the movable wedge member from tilting. It is always urged in the direction of movement.

[作用] この発明装置は、上記のように構成されているので、締
付部材と被締付部材との間で、回転又はその他の理由に
より、締付軸力が低下すると、即座に弾性部材の付勢力
が作用して可動楔部材を動かして、締付軸力を所定値に
回復させる。
[Operation] Since the device of the present invention is configured as described above, when the tightening axial force decreases between the tightening member and the member to be tightened due to rotation or other reasons, the elastic member is immediately released. Is applied to move the movable wedge member to restore the tightening axial force to a predetermined value.

[実施例] 以下、この発明をその実施例を示す図に基づいて説明す
る。
[Embodiment] The present invention will be described below with reference to the drawings illustrating the embodiment.

第1図及び第2図に示すものは、適宜近接して設けられ
ている2個の締付部材であるボルトに螺合のナット(1
1)が設けられている場合である。
1 and 2 show a nut (1) that is screwed into a bolt, which is two tightening members that are provided in close proximity to each other.
1) is provided.

図において、符号(12)はナット(11)と被締付部材
(1)との間に介装されている1対の楔部材の一方であ
る固定楔部材であり、(13)は他方の可動楔部材であっ
て、両楔部材(12)(13)が接する面に楔面(12a)(1
3a)が形成されている。また、楔面(12a)(13a)の傾
斜方向には、両方の可動楔部材(13)に連結されている
弾性部材、例えば、弾性部材を内装していしる軸力規制
タンバックル(14)が取り付けられている。また、(1
5)はベースである。
In the figure, reference numeral (12) is a fixed wedge member which is one of a pair of wedge members interposed between the nut (11) and the tightened member (1), and (13) is the other. A movable wedge member, the wedge surfaces (12a) (1
3a) has been formed. Further, in the direction of inclination of the wedge surfaces (12a) (13a), an elastic member connected to both the movable wedge members (13), for example, an axial force regulating tambuckle (14) having the elastic members internally provided therein. Is attached. Also, (1
5) is the base.

この軸力規制タンバックル(14)は、特開昭63−303210
号公報に示されている軸力規制締付具を応用したもので
あって、第3図に示すような構成を有している。
This axial force regulating tan buckle (14) is disclosed in JP-A-63-303210.
This is an application of the axial force restricting fastener shown in Japanese Patent Publication No. JP-A No. 2003-242242 and has a configuration as shown in FIG.

第3図において、符号(141)は弾性部材である皿ばね
であって数個の皿ばねを重ねて構成している。(142a)
(142b)は皿ばね(141)をその内径でそれぞれ両側に
おいて受けているばね受けであり、ばね受け(142a)
(142b)はその中心穴に右ねじ及び左ねじ(143a)(14
3b)が形成されており、この左ねじ、右ねじ(143a)
(143b)には作動桿(144)がそれぞれ螺合している。
また、(145)はハウジングと一方のばね受け(142b)
との間に配置されたカム部(ラチェット部)(146)を
形成しているカム部材であり、ヘッド(147)と共に回
転する。なお、(148)はコイルばねである。
In FIG. 3, reference numeral (141) is a disc spring which is an elastic member and is constituted by stacking several disc springs. (142a)
Reference numeral (142b) denotes a spring bearing (142a) that receives the disc spring (141) at its inner diameter on both sides.
(142b) has a right-hand thread and a left-hand thread (143a) (14a) in its center hole.
3b) is formed, and this left-hand thread, right-hand thread (143a)
The operating rods (144) are screwed into the (143b).
Further, (145) is a housing and one spring bearing (142b)
Is a cam member that forms a cam portion (ratchet portion) (146) disposed between and, and rotates together with the head (147). Incidentally, (148) is a coil spring.

この軸力規制タンバックル(14)は、カム部(146)の
カム歯の高さによって、皿ばね(141)の圧縮量すなわ
ち反発力の大きさが決まり、従って、作動桿(144)の
押圧力が規制される。
In this axial force regulating tan buckle (14), the compression amount of the disc spring (141), that is, the magnitude of the repulsive force is determined by the height of the cam teeth of the cam portion (146). Pressure is regulated.

この実施例は、上記のように構成されているので、可動
楔部材(13)は所定の押圧力をもって作用しており、従
って、ナット(11)の緩み発生を防止していると共に、
緩みが生じた場合には、軸力規制タンバックル(14)の
皿ばね(141)の反発力が作用して可動楔部材(13)を
その傾斜に抗して移動させるので、ナット(11)を介し
てボルトに所定の締付軸力を付与し続けることができ
る。すなわち、増し締めを行なわなくても、締付部材の
締付軸力の低下を常時即座に補償することができる。
Since this embodiment is configured as described above, the movable wedge member (13) acts with a predetermined pressing force, thus preventing loosening of the nut (11) and
When looseness occurs, the repulsive force of the disc spring (141) of the axial force regulating tan buckle (14) acts to move the movable wedge member (13) against its inclination, so that the nut (11). The predetermined tightening axial force can be continuously applied to the bolt via the. That is, even if the additional tightening is not performed, the decrease in the tightening axial force of the tightening member can always be immediately compensated.

次に第4図〜第9図に示すものは、締付部材であるボル
トが1個の場合を示す実施例である。
Next, FIGS. 4 to 9 show an embodiment showing a case where there is one bolt as a fastening member.

その一実施例を示す第4図及び第5図において、符号
(16)は上記と同様に特開昭63−303210号公報に示され
ている軸力規制締付具である軸力規制ナツトである。こ
の実施例では、上記実施例と異なり、固定部分を構成す
る締付部材(11)のボルトに固着されているベースに取
り付けられた、弾性部材である軸力規制ナット(16)に
より、可動楔部材(13)をその傾斜に抗する方向に引張
るように付勢されているので、締付部材の締付軸力が低
下する場合には、その締付軸力の低下を常時即座に補償
することができる。
In FIGS. 4 and 5 showing an embodiment thereof, reference numeral (16) is an axial force regulating nut which is an axial force regulating fastener disclosed in Japanese Patent Laid-Open No. 63-303210 as in the above. is there. In this embodiment, unlike the above embodiment, the movable wedge is moved by the axial force regulating nut (16), which is an elastic member, attached to the base fixed to the bolt of the tightening member (11) forming the fixed portion. Since the member (13) is biased so as to be pulled in the direction against its inclination, when the tightening axial force of the tightening member decreases, the decrease in the tightening axial force is always immediately compensated. be able to.

また、他の実施例を示す第6図及び第7図において、符
号(17)は固定楔部材であって、軸力規制ナット(16)
のボルトが螺着されており、ナット(16)内の圧縮ばね
(161)の反発力が常時可動楔部材(13)を押し込む方
向に常時付勢している。なお、この実施例はベースを設
けない例である。
Further, in FIGS. 6 and 7 showing another embodiment, reference numeral (17) is a fixed wedge member, and an axial force regulating nut (16) is provided.
The bolt is screwed on, and the repulsive force of the compression spring (161) in the nut (16) always urges the movable wedge member (13) in the direction of pushing it in. Note that this embodiment is an example in which a base is not provided.

更に他の実施例である第8図及び第9図に示すものは、
可動楔部材(18)を動かすのに、楔機能を持たしている
ものである。すなわち、図において、符号(18)は可動
楔部材であり、可動楔部材(18)の背後には、締付方向
に形成の被動楔面(18a)を形成しており、この被動楔
面(18a)に接する駆動楔面(19a)を備えていると共に
軸力規制ナット(16)により締付方向に押圧される駆動
楔部材(19)を備えている。なお、(20)は駆動楔部材
(19)を摺動可能に支承すると共に軸力規制ナット(1
6)に螺合のボルト(21)を支持している固定部分とし
てのベースである。
Yet another embodiment shown in FIGS. 8 and 9 is
It has a wedge function to move the movable wedge member (18). That is, in the figure, reference numeral (18) is a movable wedge member, and a driven wedge surface (18a) formed in the tightening direction is formed behind the movable wedge member (18). 18a) and a drive wedge member (19) which is provided in contact with the drive wedge surface (19a) and is pressed in the tightening direction by the axial force regulating nut (16). Note that (20) slidably supports the drive wedge member (19) and the axial force regulating nut (1
It is a base as a fixed part that supports a bolt (21) screwed to 6).

この実施例は、上記のように構成されているので、締付
軸力が低下してくると、軸力規制ナット(16)の弾性部
材(161)の付勢力によって駆動楔部材(19)が締付軸
力方向に押され、従って、駆動楔面(19a)及び被動楔
面(18a)のずれによって、可動楔部材(18)を押圧し
て、その傾斜に抗する方向に移動させることによって、
締付軸力を補償する。
Since this embodiment is configured as described above, when the tightening axial force decreases, the driving wedge member (19) is moved by the urging force of the elastic member (161) of the axial force regulating nut (16). The movable wedge member (18) is pushed in the direction of the tightening axial force, and thus the movable wedge member (18) is pressed by the displacement of the driving wedge surface (19a) and the driven wedge surface (18a), and is moved in the direction against the inclination. ,
Compensate for tightening axial force.

なお、上記各実施例は、可動楔部材(13)(18)を押す
か、若しくは、引っ張って、締付軸力を補償したが、も
ちろん、反対に引っ張るか、若しくは、押して補償する
ようにしてもよい。また、締付部材としては、ボルト、
ナットに限らず、被締付部材を挟み込んで、あるいは、
締付方向に押圧して、締め付ける等、いかなる形式のも
のでもよい。
In each of the above embodiments, the movable wedge members (13) and (18) are pushed or pulled to compensate for the tightening axial force. However, of course, the pulling may be performed in the opposite direction or the pushing may be performed. Good. Further, as the tightening member, a bolt,
Not only nuts, but also clamped members, or
Any type such as pressing in the tightening direction and tightening may be used.

[発明の効果] 以上のように、この発明によれば、可動楔部材と固定部
分または他の締付部材の可動楔部材との間に介在する弾
性部材により、その可動楔部材がその傾斜に抗して移動
する方向に常に付勢されているので、締付部材の締付軸
力の低下が生じる場合には、弾性部材の反発力により可
動楔部材を移動し、増し締めを行わなくても締付軸力の
低下を常時即座に補償することができる。
[Effects of the Invention] As described above, according to the present invention, the movable wedge member is tilted by the elastic member interposed between the movable wedge member and the movable wedge member of the fixed portion or the other tightening member. Since it is always urged in the direction of movement against resistance, when the tightening axial force of the tightening member is reduced, the movable wedge member is moved by the repulsive force of the elastic member and retightening is not performed. Also, a decrease in tightening axial force can always be immediately compensated.

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

第1図はこの発明の一実施例の一部断面正面図、第2図
は第1図の一部平面図、第3図は第1図の軸力規制タン
バックルの縦断面図、第4図は他の実施例の平面図、第
5図は第4図の縦断面図、第6図は更に他の実施例の平
面図、第7図は第6図の縦断面図、第8図は更に他の実
施例の平面図、第9図は第8図の縦断面図、第10図は従
来の緩み防止装置の一例の断面図である。 (1)……被締付部材、(11)……締付部材(ナッ
ト)、(12)(14)……固定楔部材、(12a)(13a)…
…楔面、(13)(18)……可動楔部材、(14)(16)…
…軸力規制部材(軸力規制タンバックル、軸力規制ナッ
ト)、(141)(161)……弾性部材(皿ばね)。
FIG. 1 is a partial sectional front view of an embodiment of the present invention, FIG. 2 is a partial plan view of FIG. 1, and FIG. 3 is a longitudinal sectional view of an axial force regulating tan buckle of FIG. FIG. 5 is a plan view of another embodiment, FIG. 5 is a vertical cross-sectional view of FIG. 4, FIG. 6 is a plan view of still another embodiment, FIG. 7 is a vertical cross-sectional view of FIG. Is a plan view of still another embodiment, FIG. 9 is a vertical sectional view of FIG. 8, and FIG. 10 is a sectional view of an example of a conventional loosening prevention device. (1) ... Tightened member, (11) ... Tightening member (nut), (12) (14) ... Fixed wedge member, (12a) (13a) ...
... wedge surface, (13) (18) ... movable wedge member, (14) (16) ...
… Axial force regulation member (axial force regulation tan buckle, axial force regulation nut), (141) (161) ... Elastic member (disc spring).

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】締付部材と被締付部材との間に、互いに逆
方向に傾斜する楔面を有する固定楔部材と可動楔部材と
を介在させた締付部緩み防止装置において、前記可動楔
部材と固定部分または他の締付部材の可動楔部材との間
に介在する弾性部材により、その可動楔部材が傾斜に抗
して移動する方向に常時付勢されていることを特徴とす
る締付部緩み防止装置。
1. A tightening portion loosening prevention device in which a fixed wedge member and a movable wedge member having wedge surfaces inclined in opposite directions are interposed between a tightening member and a member to be tightened, wherein the movable portion is movable. An elastic member interposed between the wedge member and the movable wedge member of the fixed portion or another tightening member is always biased in the direction in which the movable wedge member moves against the inclination. Tightening part loosening prevention device.
JP1218655A 1989-08-28 1989-08-28 Tightening part loosening prevention device Expired - Lifetime JPH0786368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1218655A JPH0786368B2 (en) 1989-08-28 1989-08-28 Tightening part loosening prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1218655A JPH0786368B2 (en) 1989-08-28 1989-08-28 Tightening part loosening prevention device

Publications (2)

Publication Number Publication Date
JPH0384208A JPH0384208A (en) 1991-04-09
JPH0786368B2 true JPH0786368B2 (en) 1995-09-20

Family

ID=16723349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1218655A Expired - Lifetime JPH0786368B2 (en) 1989-08-28 1989-08-28 Tightening part loosening prevention device

Country Status (1)

Country Link
JP (1) JPH0786368B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006132696A (en) * 2004-11-08 2006-05-25 Miyoshi Kikuo Automatic fastening tool
JP2007288269A (en) * 2006-04-12 2007-11-01 Mitsubishi Electric Corp Video image receiving reproducing apparatus
JP4725898B2 (en) * 2007-11-06 2011-07-13 通 山田 Bolt washer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137612A (en) * 1983-01-28 1984-08-07 株式会社竹中工務店 Method of clamping bolt for structure and washer press-in jack used for said method

Also Published As

Publication number Publication date
JPH0384208A (en) 1991-04-09

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